Open access peer-reviewed chapter
Abstract
When you work in a dental health care service team, you must have seen women who say that the reason for their oral and dental problems is pregnancy, breastfeeding, or menopause. In this chapter, we will examine the role of hormonal changes during women’s life on their oral health conditions. Hormonal fluctuations throughout a woman’s life significantly impact her oral health. Key stages include puberty, menstruation, pregnancy, lactation, and menopause, where changes in estrogen and progesterone levels heighten susceptibility to oral issues, also we pay special attention to the periods of pregnancy and after, the periods which women have the most hormonal changes. Understanding these hormonal shifts is essential for addressing their implications, as they can lead to specific oral health issues such as gingivitis, dry mouth, and increased susceptibility to dental diseases. We also describe the effects of these hormonal changes on different oral conditions and represent the ways to deal with it.
Keywords
- sex hormone
- women
- oral health
- pregnancy
- lactation
1. Introduction
Oral health is a key indicator of overall well-being, yet it is often studied in isolation from other physiological processes. In particular, the influence of hormonal fluctuations on oral health in women remains an underexplored area despite growing evidence suggesting that hormone levels significantly affect dental conditions. Throughout a woman’s life, key hormonal milestones—puberty, menstruation, pregnancy, lactation, and menopause—bring marked changes in estrogen and progesterone levels. These shifts can increase the likelihood of developing certain oral health conditions, emphasizing the need for awareness among both healthcare providers and patients.
One of the earliest stages where hormonal influence on oral health becomes apparent is puberty. The increased levels of estrogen and progesterone at this stage can lead to gingival inflammation, heightened sensitivity, and increased plaque accumulation, even with consistent oral hygiene practices. Similarly, menstruation can trigger cyclic gingival changes due to hormonal surges, resulting in a condition known as menstrual gingivitis. Women may experience symptoms such as swollen, red gums, bleeding, and discomfort, highlighting the direct relationship between hormonal cycles and oral health.
During pregnancy, the body undergoes profound hormonal changes, particularly a surge in estrogen and progesterone, that significantly affect oral tissues. Pregnant women are at a higher risk of developing pregnancy gingivitis, characterized by inflammation, bleeding, and swelling of the gums. This condition can progress into more severe periodontal issues if not managed properly. Moreover, pregnancy can increase the risk of tooth erosion and dental caries due to increased acidity in the mouth from morning sickness and dietary changes. As a result, dentists recommend closer monitoring and preventive care for women during pregnancy to manage these risks.
Lactation is another period that impacts oral health. Hormonal adjustments after childbirth, especially during breastfeeding, can lead to decreased estrogen levels, which may influence bone density and gum health. Additionally, lactation-related dietary demands and potential changes in oral care routines can also affect oral health. Addressing these challenges with specific preventive measures can help protect women from developing long-term dental issues.
Finally, menopause represents a significant stage in a woman’s life where hormonal declines bring new oral health challenges. Lower estrogen levels during menopause contribute to decreased saliva production, resulting in dry mouth, a condition that can increase susceptibility to cavities, gum disease, and other oral infections. Furthermore, postmenopausal women are more likely to experience osteoporosis, which can weaken jawbone density and exacerbate periodontal problems. Understanding and addressing these risks is crucial for maintaining oral health during this life stage.
This chapter aims to explore the cumulative effects of hormonal fluctuations on oral health, providing insights into how each stage of a woman’s life can influence her susceptibility to various dental conditions. By reviewing these associations, we highlight the importance of preventive care and specialized management strategies tailored to each hormonal phase. This perspective chapter seeks to bridge the gap between dental and reproductive health, advocating for an integrated approach to oral care that accounts for hormonal influences.
2. Women’s lifetime hormonal fluctuations
Women’s lifetime hormonal fluctuations are influenced by various life stages, including puberty, menstrual cycles, pregnancy, and menopause. Hormonal fluctuations throughout a woman’s life significantly influence her overall health, particularly oral health. These changes occur during various life stages, including puberty, menstruation, pregnancy, lactation, and menopause driven primarily by hormones such as estrogen, progesterone, luteinizing hormone (LH), and follicle-stimulating hormone (FSH), which regulate key physiological processes [1].
2.1 Puberty
Puberty typically begins between 9 and 14 years, and increased production of estrogen and progesterone leads to the development of secondary sexual characteristics, such as breast development and the onset of menstruation; also, puberty influences body composition. Hormonal changes can lead to mood swings and emotional challenges, affecting mental well-being [2].
2.2 Menstrual cycle
The menstrual cycle that occurs usually in 28 days, but can range from 21 to 35 days, comprises four main phases including menstrual, follicular, ovulatory, and luteal, each characterized by distinct hormonal profiles [3].
2.2.1 Menstrual phase
During the menstrual phase, which lasts from days 1 to 5 of the cycle, estrogen and progesterone levels are at their lowest. This drop may affect mood and energy levels. Nutrient-rich foods, particularly those high in iron and omega-3 fatty acids, can help alleviate menstrual symptoms and support overall health.
2.2.2 Follicular phase
The follicular phase occurs approximately from days 6 to 14, during which estrogen levels begin to rise, promoting the thickening of the uterine lining and often leading to improved mood and energy. Engaging in moderate exercise during this time can further enhance well-being. In some literatures, first two phases are considered as one.
2.2.3 Ovulatory phase
In the ovulatory phase, around day 14, estrogen peaks, triggering ovulation. This surge may contribute to increased libido and energy but can also lead to sensitivity in some women due to hormonal fluctuations.
2.2.4 Luteal phase
Following ovulation, the luteal phase (days 18 to 28) is marked by a rise in progesterone. This hormone prepares the body for a potential pregnancy but can also result in symptoms such as breast tenderness, mood swings, and fatigue. Nutritional choices during this phase should focus on complex carbohydrates to stabilize blood sugar levels, and calming exercises may be beneficial for managing stress and supporting hormonal balance.
Hormonal variations during the menstrual cycle can cause symptoms such as bloating, cramps, and fatigue. Fluctuations in estrogen and progesterone can influence muscle metabolism and strength, impacting physical performance.
2.3 Pregnancy
Pregnancy triggers significant hormonal shifts that affect various physiological systems, including the endocrine and oral health systems. The two primary hormones involved are estrogen and progesterone, which undergo dramatic increases during gestation. Estrogen, in particular, is produced in quantities exceeding those seen throughout a woman’s non-pregnant life, playing a crucial role in uterine and placental development, as well as fetal maturation. The rise in estrogen levels peaks in the third trimester and is linked to symptoms such as nausea during the first trimester and breast development during the second trimester [4].
Hormonal shifts support fetal development but can also lead to discomfort, weight gain, and changes in body image. Pregnancy hormones can affect mood, leading to anxiety or depression in some women, especially during stressful periods like the COVID-19 pandemic. Recent studies reveal that hormonal changes during pregnancy produce profound effects on both the body and mind, due to high levels of hormones such as estrogen, progesterone, and oxytocin. These hormones orchestrate physiological changes that support fetal development and prepare the body for childbirth, while also influencing the brain to adjust for motherhood [5].
2.3.1 Physical effects
In terms of physical effects, hormonal surges trigger changes such as increased blood volume, altered immune responses, and redistribution of body fat. Estrogen and progesterone are especially active, promoting uterine growth, enhancing blood flow, and adjusting immune function to protect the fetus. In the brain, these hormones contribute to neuroplasticity, meaning the brain adapts and reorganizes itself in preparation for caregiving tasks. These findings highlight pregnancy as a period of intense physiological and psychological adaptation, with implications for understanding maternal health and potential support strategies for maternal mental well-being during and after pregnancy.
During pregnancy, hormonal changes lead to a series of major physical adaptations that help prepare the body to support the fetus and undergo childbirth. Here are some key areas affected:
2.3.2 Cardiovascular changes
Increased blood volume: By the second trimester, blood volume increases by about 40–50% to meet the oxygen and nutrient needs of the developing fetus. This requires the heart to work harder, often increasing heart rate by around 10–20 beats per minute.
Lowered blood pressure: Progesterone causes blood vessels to relax, which can initially lower blood pressure. However, blood pressure may return to normal or increase slightly as the pregnancy progresses [6].
2.3.3 Respiratory changes
Increased oxygen demand: Estrogen helps expand the rib cage and increases lung capacity, enabling the mother to take in more oxygen. Additionally, progesterone enhances breathing efficiency, allowing the mother’s body to take in more air with each breath.
Shortness of breath: Toward the later stages of pregnancy, the uterus presses against the diaphragm, contributing to sensations of breathlessness, especially with exertion [6].
2.3.4 Immune system modulation
Adjustments to prevent fetal rejection: Since the fetus contains genetic material from both parents, the maternal immune system adapts to avoid attacking it. Progesterone plays a major role in creating an immune environment that both protects the fetus and prevents maternal illness. This can, however, make pregnant women more susceptible to certain infections [6].
2.3.5 Metabolic changes
Increased caloric demand: Pregnancy significantly boosts metabolism, requiring additional caloric intake, particularly in the second and third trimesters. Hormones like human placental lactogen alter the way the mother’s body processes carbohydrates, fats, and proteins to ensure an adequate energy supply for fetal development [6].
2.3.6 Musculoskeletal adaptations
Joint and ligament relaxation: The hormone relaxin is released to relax ligaments, particularly around the pelvis, to prepare the body for labor. This also affects other joints, making pregnant women more prone to injuries or discomforts such as lower back pain.
Postural changes: The growing uterus shifts the mother’s center of gravity, leading to postural adjustments that can contribute to strain in the lower back and pelvis. These physiological shifts showcase how hormonal changes allow the body to support fetal development while preparing for the demands of labor and delivery [6].
2.3.7 Mental and emotional effects
Mental changes during pregnancy include structural shifts in the brain that may impact emotional processing, memory, and social behaviors. For example, recent imaging studies show that pregnancy causes a reduction in gray matter volume in certain brain regions associated with social cognition and empathy, which may facilitate a stronger mother-infant bond. This neuroplasticity during pregnancy appears linked to hormonal fluctuations and is thought to enhance caregiving instincts, though it can also make some mothers more vulnerable to mood disorders such as postpartum depression if hormonal and physical demands overwhelm these adaptive changes [7].
2.4 Postpartum period and lactation
Hormonal changes in the postpartum period: The postpartum period, which follows childbirth, is marked by significant hormonal fluctuations that profoundly influence a woman’s physical and mental health. As estrogen and progesterone levels plummet to their pre-pregnancy states, new mothers may experience a range of symptoms, including mood swings, fatigue, and even conditions such as postpartum depression, affecting approximately one in nine parents. Concurrently, hormonal changes associated with lactation, such as increased levels of prolactin and oxytocin, play critical roles in milk production and maternal bonding, highlighting the complex interplay between hormonal regulation and maternal well-being during this transitional phase [8].
However, the postpartum hormonal landscape can bring challenges. A decrease in estrogen and progesterone following childbirth may contribute to postpartum mood swings, and some women experience postpartum depression, often linked to these hormonal adjustments. Relaxation techniques, such as breathing exercises and mindfulness, have been shown to reduce stress and anxiety during lactation, promoting a more positive breastfeeding experience and improving milk supply. By managing stress and promoting relaxation, these interventions can enhance oxytocin release and overall lactation outcomes.
After childbirth and during lactation, hormonal shifts trigger a series of physical changes that support breastfeeding and recovery from pregnancy. Here’s an in-depth look at these changes [9]:
2.4.1 Milk production and lactation
Prolactin: The primary hormone responsible for initiating and maintaining milk production is prolactin. Following delivery, prolactin levels rise sharply, stimulating the mammary glands to produce milk. This is critical for breastfeeding success. The amount of milk produced is directly related to the frequency of breastfeeding, as prolactin levels fluctuate based on demand.
Oxytocin: Often referred to as the “love hormone,” oxytocin plays a significant role in the milk ejection reflex, helping to release milk from the glands into the nipple during breastfeeding. It also helps contract the uterus post-delivery, promoting uterine involution (the return of the uterus to its pre-pregnancy size).
2.4.2 Breast changes
Increased size and tenderness: Under the influence of progesterone and estrogen during pregnancy, the breasts undergo significant changes in preparation for breastfeeding, including increased size and tenderness. After birth, the release of prolactin ensures that milk production is established, further changing the size and feel of the breasts as they become engorged with milk.
Areolar and nipple changes: The areola and nipples darken during pregnancy and after birth, which helps the infant locate the breast for feeding. This color change can remain post-lactation, even after weaning.
2.4.3 Uterine involution and hormonal regulation
After delivery, the uterus contracts to shrink back to its pre-pregnancy size, a process influenced by oxytocin. This contraction helps control bleeding, but can also lead to postpartum cramps, particularly during breastfeeding when oxytocin levels surge. The uterus undergoes this process for about 6–8 weeks post-delivery.
2.4.4 Skin and hair changes
Skin elasticity and stretch marks: During pregnancy, the skin stretches to accommodate the growing fetus, and while much of this returns to normal postpartum, some women experience lingering stretch marks. Hormonal changes after childbirth can also influence skin pigmentation, sometimes causing conditions such as melasma (dark patches of skin), which typically fade over time.
Hair loss: Many women experience a condition called “postpartum hair loss” due to hormonal fluctuations, particularly the sudden drop in estrogen levels after childbirth. This usually leads to thinning hair, especially around the temples and crown. Hair typically regrows within a few months, but this process can be distressing for some women.
2.4.5 Metabolic and cardiovascular adjustments
Return of menstrual cycles: Hormonal shifts influence the return of menstruation after childbirth. For women who breastfeed, prolactin levels remain elevated, which can suppress ovulation and delay the return of menstruation. For non-breastfeeding women, ovulation typically returns within a few months.
Body weight and fat distribution: Pregnancy leads to increased fat storage for energy reserves during breastfeeding. After childbirth, metabolism begins to return to pre-pregnancy levels, though it can take several months to return to baseline. Breastfeeding also increases energy expenditure, helping some women return to their pre-pregnancy weight.
These physical changes illustrate how the body adapts to support both the newborn and the mother’s recovery after pregnancy. Each of these processes is influenced by the complex hormonal environment that is established after childbirth, and it is key to supporting new mothers physically and emotionally.
2.5 Menopause
Menopause typically occurs between 45 and 55 years. These hormonal changes become more pronounced. Before this stage, estrogen and FSH levels start to become variable, with menstrual cycles remaining regular or becoming slightly irregular [10].
2.5.1 Early perimenopause
Here, estrogen and FSH levels become increasingly erratic, leading to more noticeable irregularities in menstrual cycles and the onset of menopausal symptoms such as hot flashes and mood changes.
2.5.2 Late perimenopause
In the late perimenopause stage, estrogen levels decrease, while FSH levels increase, signaling the body’s transition away from regular menstruation. This phase may bring heightened symptoms that affect a woman’s overall health. Understanding these hormonal changes is crucial for addressing their implications for women’s health, particularly in managing conditions that can arise from hormonal fluctuations.
The decline in estrogen leads to symptoms such as hot flashes, night sweats, and changes in mood. These fluctuations can also affect bone density and cardiovascular health. Hormonal changes during menopause are linked to increased risks of osteoporosis and heart disease due to the protective effects of estrogen being reduced [10].
Throughout a woman’s life, hormonal fluctuations are normal and can significantly impact physical health, emotional well-being, and overall quality of life. Understanding these changes can help in managing symptoms associated with different life stages.
3. Hormonal changes effects on oral condition
Hormonal fluctuations throughout a woman’s life can lead to various oral health issues, particularly during critical periods such as puberty, menstruation, pregnancy, and menopause. These hormonal changes influence biological functions that directly impact oral health, including blood circulation to the mouth and saliva production. So hormonal fluctuations can significantly impact oral health in women at various life stages. Here is how these changes manifest:
3.1 Puberty and oral health
During puberty, increased levels of hormones can cause heightened sensitivity in the gums, leading to conditions such as gingivitis, which is characterized by swollen and bleeding gums. The surge in hormones can also result in increased inflammation and a greater susceptibility to bacterial infections within the oral cavity. On the other hand, mood swings and changes in routine during puberty may affect oral hygiene practices. Interestingly, gingival inflammation does not always correlate directly with the amount of plaque present; instead, it may be more significantly influenced by variations in hormonal levels. This observation suggests that hormonal fluctuations could play a crucial role in the inflammatory response of the gums [11, 12].
Contrary to this notion, research indicates that maintaining good oral hygiene has a more positive impact on the gingival health of adolescents than the increasing levels of steroid hormones during puberty. This finding highlights the importance of effective oral care practices in managing gingival conditions, particularly in younger populations. During puberty, the changes in microbial composition within the oral cavity are largely driven by the gingival tissue’s reaction to sex hormones. These hormones modify the local environment, allowing certain bacterial species to thrive in response to the elevated hormone levels, which can further influence gingival health.
Progesterone and estrogen hormones can lead to periodontis causing bacteria to grow. Thus, periodontis is more common in the pubertal age in comparison with others in their prepubertal stage. Also, it has been reported that there is a higher population of bacteria in subgingival pockets is present during puberty, which may selectively accumulate estradiol and progesterone [11, 12, 13].
3.2 Menstrual cycle and oral health
Some women experience gingival inflammation and sensitivity just before menstruation due to hormonal changes. Symptoms may include swollen gums and increased bleeding. Hormonal fluctuations can alter taste perception, potentially affecting dietary choices and oral care habits.
The menstrual cycle also introduces hormonal fluctuations that can affect oral health. The increase in progesterone during certain phases can cause gums to become bright red and swollen, contributing to discomfort and increased bleeding. This phenomenon, often referred to as menstruation gingivitis, highlights the intricate link between hormonal changes and oral health [12].
The menstrual or reproductive cycle is marked by a cyclical increase in the production and secretion of estrogen and progesterone, which begins at puberty. Researches has shown that significant inflammatory changes in the gums can occur during this cycle, particularly when there is an imbalance in sex hormones. These hormonal fluctuations can exacerbate existing gingival conditions, leading to increased inflammation. During menstruation, variations in the flow of gingival crevicular fluid (GCF) are primarily observed in individuals with pre-existing gingivitis, as opposed to those with healthy gums. Studies have indicated that levels of inflammatory cytokines, such as interleukin 1β (IL1β), exhibit notable changes, with a consistent rise in GCF from the onset of menstruation to the peak of progesterone levels. This increase may be attributed to the role of progesterone in stimulating inflammatory cells to produce higher amounts of IL1β.
Furthermore, other inflammatory cytokines, including interleukin 6 (IL6) and tumor necrosis factor alpha, may also play a role in the gingival inflammatory changes that occur throughout the menstrual cycle. These cytokines contribute to the overall inflammatory response, highlighting the complex interplay between hormonal fluctuations and oral health during this period. Understanding these dynamics is crucial for managing gingival health in individuals affected by hormonal changes [11].
3.3 Pregnancy effects on oral condition
Pregnancy triggers significant hormonal shifts that affect various physiological systems, including the endocrine and oral health systems. The two primary hormones involved are estrogen and progesterone, which undergo dramatic increases during gestation. Estrogen, in particular, is produced in quantities exceeding those seen throughout a woman’s non-pregnant life, playing a crucial role in uterine and placental development, as well as fetal maturation. The rise in estrogen levels peaks in the third trimester and is linked to symptoms such as nausea during the first trimester and breast development during the second trimester [14].
Studies indicate that 30 to 100% of pregnant women may suffer from gum inflammation, which can progress to periodontitis if untreated. If inflammation is not addressed, it can lead to the deterioration of tooth support and, ultimately, tooth loss [12]. Some women develop benign growths called pyogenic granulomas on the gums during pregnancy due to hormonal changes and increased blood flow. Also, it has been reported that morning sickness can lead to acid exposure from vomiting, increasing the risk of dental erosion.
During pregnancy, alterations in the oral microbiome are evident, with total viable microbial counts significantly higher than those observed in non-pregnant women. These changes may be influenced by hormonal fluctuations that affect bacterial growth, highlighting a bidirectional relationship between microbiota and hormonal levels. The hormonal changes during pregnancy can lead to a heightened risk of periodontal disease. The increased blood flow and hormonal variations may exacerbate pre-existing conditions or contribute to new issues in oral health. Women experiencing periodontal disease during pregnancy have been observed to have a higher risk of pregnancy complications, suggesting a significant interplay between oral and systemic health [15].
Moreover, the modifications in hormone levels can also influence dental caries development, potentially affecting the Decayed, Missing, and Filled Teeth (DMFT) status of pregnant women. As insulin sensitivity decreases later in pregnancy, the body’s ability to regulate blood glucose is impaired, which can lead to increased sugar levels in the mouth—contributing to a higher risk of dental caries. Researches have indicated a bidirectional relationship between periodontal disease and adverse pregnancy outcomes, including preterm birth and low birth weight [16].
The hormonal changes that lead to gingival inflammation can create an inflammatory environment that may affect overall health, underscoring the importance of dental care during and after pregnancy [17]. Elevated systemic inflammation and increased periodontal pathogens can disrupt homeostasis in the fetal-placental unit, potentially leading to complications [18].
In summary, pregnancy involves significant hormonal fluctuations, notably increases in estrogen and progesterone, which can have profound effects on the oral cavity. These hormones can alter the immune response, leading to an increased risk of gum disease and other oral health issues. Here is a detailed breakdown of the primary effects:
3.3.1 Pregnancy gingivitis
Pregnancy gingivitis is a common condition characterized by swollen, red, and bleeding gums, particularly around the second trimester. The increased levels of progesterone during pregnancy can cause the gums to become more sensitive to plaque, leading to inflammation. The condition is often worsened by poor oral hygiene. Pregnant women may experience changes in their saliva composition, contributing to the increased susceptibility of the gums to bacterial infections [19].
3.3.2 Periodontal disease
Untreated gingivitis can develop into more severe periodontal disease, which leads to the destruction of the supportive tissues around the teeth, including the alveolar bone. The disease may result in clinical attachment loss, deepening of the periodontal pockets, and bone loss, particularly in women who already have periodontal risk factors before pregnancy. There is still some controversy about the relationship between periodontal disease and adverse pregnancy outcomes, but numerous studies have shown a significant association between periodontal disease and preterm birth or low birth weight [20].
3.3.3 Microbial changes
Pregnancy can shift the microbial balance in the oral cavity, promoting the growth of harmful bacteria. The resulting dysbiosis (imbalance of the oral microbiome) can contribute to the progression of gingivitis and periodontitis. Increased levels of bacteria such as
Current literature supports the link between
3.3.4 Alveolar bone health
Pregnancy hormones may influence bone metabolism and decrease the body’s ability to regenerate alveolar bone. Increased bone resorption and a reduction in bone density can make the alveolar bone more susceptible to destruction from periodontal disease. The combination of hormonal effects and periodontal disease progression can thus increase the risk of tooth mobility and eventual tooth loss [23].
3.3.5 Best timing for dental treatment during pregnancy
The second trimester (weeks 13–27) is considered the safest time for most dental treatments during pregnancy. At this stage, the risk of miscarriage is lower, and the baby’s organs have already formed. Dental treatments such as fillings, crowns, and even certain extractions are generally considered safe, but non-essential treatments, such as cosmetic procedures, should be avoided [24].
First trimester: During the first trimester, dental treatments that are not urgent should be postponed to avoid any potential risks to fetal development. The first 12 weeks are critical for the development of the baby’s organs and tissues, and the risk of teratogenic effects from medications, anesthetics, or radiation is higher [24].
Third trimester: The third trimester is a less ideal time for dental procedures due to the physical discomfort that may accompany lying back in the dentist’s chair and the potential for higher blood pressure or gestational hypertension. However, necessary treatments such as tooth extractions or infection control may still be performed if urgent [24].
Appropriate supplementation of a variety of nutrition during pregnancy has become an effective way to prevent periodontal disease and adverse pregnancy outcomes the management of periodontal infection during pregnancy should follow relevant treatment principles, and the ideal time for periodontal treatment is the second trimester (14–27 weeks). If intervention for infection is absolutely necessary, emergency treatment can be performed throughout pregnancy [20].
3.3.6 Considerations during pregnancy
Dental X-rays should be avoided unless absolutely necessary. If an X-ray is required, a lead apron should be used to shield the abdomen. Modern digital X-rays expose the body to much lower levels of radiation than traditional methods, which reduces risks, but it is still advisable to postpone elective X-rays during pregnancy.
Local anesthetics such as lidocaine with epinephrine are commonly used during dental procedures and are generally considered safe during pregnancy. However, care should be taken to avoid excessive amounts of epinephrine, as it may cause vasoconstriction, affecting blood flow to the fetus.
Penicillin and its derivatives (such as amoxicillin) are considered safe during pregnancy and are commonly prescribed for oral infections; also, the metronidazole has similar condition. Clindamycin is another safe alternative for treating infections. Tetracyclines should be avoided during pregnancy as they can affect fetal bone development and teeth discoloration. As an analgesics, the acetaminophen is the safest pain killer during pregnancy, and the ibuprofen is safe also except in the 3th trimester [24].
3.4 Postpartum period and lactation effects on oral health
The hormonal changes during lactation not only facilitate milk production but also induce physiological adaptations in various maternal tissues. For example, there is an increased demand for calcium and other minerals, which can lead to a transient loss of bone minerals.
After weaning, hormonal levels revert to pre-pregnancy states, and bone remineralization becomes a priority, highlighting the dynamic interplay between lactation and maternal health. These hormonal shifts also have implications for oral health. Changes in hormone levels can affect the composition of saliva and the immune response in the oral cavity, potentially increasing susceptibility to dental issues during the postpartum period Thus, understanding the hormonal changes during lactation is essential for both maternal and child health, including aspects related to oral care.
During the postpartum period and lactation, significant hormonal fluctuations can profoundly impact oral health. The hormonal changes that occur, particularly involving estrogen and progesterone, can lead to alterations in the oral environment, resulting in various oral health issues.
Following childbirth, women experience a significant drop in estrogen levels, which can affect oral health in several ways. The decrease in estrogen is associated with reduced blood flow and changes in the immune response, making the gums more susceptible to inflammation and infection. This can lead to an increased risk of periodontal diseases, such as gingivitis and periodontitis, particularly if oral hygiene is not adequately maintained [25].
Additionally, women may experience symptoms such as dry mouth during this period, which can exacerbate plaque buildup and increase the risk of cavities and periodontal disease. Saliva plays a crucial role in neutralizing acids produced by plaque and in maintaining oral health; therefore, reduced saliva can lead to halitosis and increased dental issues [25].
Lactation also introduces changes in hormone levels, particularly increases in prolactin and oxytocin, which can further influence oral health. While breastfeeding may have protective effects against tooth decay due to the beneficial properties of breast milk, hormonal changes can still affect the gums. Some women may experience swollen or bleeding gums during this time due to elevated levels of estrogen and progesterone, similar to what occurs during pregnancy. The inflammation of the gums can lead to more severe conditions if left untreated, emphasizing the importance of maintaining good oral hygiene practices during lactation [26, 27]. Also, trabecular rich sites of the mandible were found affected by lactation and it should be considered in advanced dental treatments [28].
In summary, lactation can influence dental and oral health in various ways, both directly and indirectly, due to hormonal shifts, dietary changes, and the physiological demands of breastfeeding. Here are some key ways lactation may affect oral health [29]:
3.4.1 Dry mouth
Hormonal impact: During lactation, prolactin levels increase to stimulate milk production, but this can also decrease saliva production, leading to dry mouth (xerostomia). Saliva is essential for neutralizing acids in the mouth and protecting against cavities and gum disease. Reduced saliva flow increases the risk of tooth decay and bad breath impact on Oral Health: Saliva plays a crucial role in maintaining the balance of bacteria in the mouth. When saliva production is low, harmful bacteria thrive, potentially leading to issues such as tooth decay, gingivitis, and even infections like thrush, which is more common in breastfeeding women due to hormone changes.
3.4.2 Gum sensitivity
Hormonal influence: Just as pregnancy can affect gum health due to hormonal fluctuations, lactation can also contribute to gum sensitivity. Elevated levels of progesterone and estrogen postpartum can lead to an increased blood flow to the gums, making them more susceptible to irritation and inflammation. Gingivitis, characterized by swollen, bleeding gums, may become more noticeable during lactation.
3.4.3 Oral hygiene difficulties
During breastfeeding, women may experience difficulty maintaining oral hygiene due to fatigue or time constraints. This can worsen gum issues if plaque accumulates on teeth, exacerbating gingival problem. Also, lactating women often require extra calories to meet the energy demands of breastfeeding. If this caloric increase includes sugary or acidic foods and drinks, it can affect oral health. Sugary snacks or beverages can feed harmful bacteria in the mouth, contributing to plaque buildup and the formation of cavities. Dehydration during lactation can not only exacerbate dry mouth but also affect overall oral health. Dehydration can reduce saliva production, leading to an increased risk of tooth decay and gum disease.
3.4.4 Tooth erosion
The dietary habits of a lactating mother can sometimes include more acidic foods and beverages, such as citrus fruits and juices, which can erode tooth enamel over time. While lactation itself does not directly cause tooth erosion, dietary choices can contribute to enamel wear, especially when combined with dry mouth.
3.4.5 Periodontal diseases
After childbirth, the rapid hormonal fluctuations associated with breastfeeding can affect the health of both soft and hard oral tissues. The decrease in estrogen and progesterone after delivery might increase the risk of periodontal diseases if the individual was already susceptible.
Therefore, lactation, through hormonal shift and special habits, can influence various aspects of oral health, making good oral hygiene and regular hydration important during this period. If you have specific concerns about oral health while breastfeeding, consulting a dentist is recommended.
3.4.6 Considerations in dental treatments
Most local anesthetics, including lidocaine, are safe during lactation, as they have minimal secretion into breast milk. However, it is always best to consult with a healthcare provider regarding any concerns. Also, most antibiotics are safe for breastfeeding mothers, but medications like tetracycline can be excreted in breast milk and should be avoided. Penicillin, amoxicillin, and clindamycin are generally considered safe and effective for managing oral infections during lactation.
3.5 Menopause and its impact on oral health
Menopause is characterized by significant hormonal changes that impact various bodily functions, including oral health. As women approach their late 30s and into their 40s, the ovaries gradually produce less estrogen and progesterone, which are essential for regulating the menstrual cycle and reproductive health. This hormonal decline can result in a variety of symptoms that extend beyond the reproductive system and can significantly affect oral health.
One of the notable effects of decreased estrogen levels is the reduction in saliva production. Estrogen receptors are present in the oral mucosa and the salivary glands, and as estrogen levels drop, saliva production may decline. A lower saliva flow can lead to dry mouth (xerostomia), which not only affects comfort but also increases the risk of dental issues such as cavities and gum disease, as saliva plays a crucial role in washing away food particles and aiding digestion. Effective management strategies include using over-the-counter products like saliva substitutes, chewing sugar-free gum, and increasing water intake [30].
Hormonal fluctuations during menopause can also render the gums more sensitive and prone to inflammation. Women may experience conditions such as gingivitis or periodontitis more frequently during this time, as hormonal changes can lead to increased gum sensitivity Another consequence of hormonal changes is the potential alteration in taste perception. Women may experience a metallic taste or a reduced sense of taste, which can further complicate the experience of eating and enjoying food during menopause [31].
A 2023 survey indicated that a large majority of women over 50 are unaware of these risks, with 84% not realizing that menopause can affect oral health, and nearly 90% unaware of specific risks like increased tooth decay and gum disease [32].
The decline in estrogen during menopause can compromise oral health, heightening the likelihood of conditions such as gingivitis and periodontitis, which can lead to attachment loss and tooth loss. Many women report heightened tooth sensitivity during menopause, often linked to the loss of enamel and exposure of dentine, which can lead to pain and discomfort. This sensitivity may also arise from changes in oral hygiene routines or dietary habits that women adopt during this period. Menopausal women are at an increased risk of developing periodontal disease due to hormonal changes. This condition manifests as swollen, bleeding gums, and can progress to more severe forms if not managed appropriately Changes in gum health are also prevalent during menopause. Symptoms may include changes in gum color, increased bleeding, gum recession, and inflammation, with studies suggesting that up to 60% of women may experience periodontal symptoms. Chronic gum disease, or periodontitis, can lead to tooth loss and is associated with other systemic health issues, such as heart disease and diabetes [30].
Burning mouth syndrome (BMS) is another oral health concern affecting approximately 15% of menopausal women. This condition involves a burning sensation in the mouth, which may affect the tongue, gums, and lips, and can also alter taste perception, especially for salty or spicy foods. The risk of tooth loss increases during menopause, with studies showing that more than one in four post-menopausal women may experience this within 5 years. This heightened risk is often linked to bone density loss in the jaw, a common consequence of menopause, which can destabilize teeth and make them more prone to becoming loose or falling out [33].
4. Preventive measures and management for women
To mitigate the effects of hormonal fluctuations on oral health, particularly regarding conditions such as gingivitis, women can adopt several preventive measures and management strategies. These include maintaining proper oral hygiene, making healthy lifestyle choices, and seeking regular dental care. Regular dental check-ups: Regular dental visits are essential for the early detection and treatment of gum disease. Dentists can identify the initial signs of gingivitis and recommend appropriate interventions to prevent its progression into more severe forms of gum disease, such as periodontitis. It is advisable for women to schedule professional cleanings and check-ups at least twice a year. In the following, we mention the most important ways to maintain oral health during hormonal changes [34, 35, 36].
5. Proper oral hygiene practices
Establishing a consistent oral hygiene routine is critical for preventing gum disease. Women should brush their teeth at least twice daily with fluoride toothpaste, floss daily, and consider using an antiseptic mouthwash to further reduce plaque and bacteria in the mouth. Additionally, utilizing a soft-bristled toothbrush can help prevent damage to gums and enamel.
5.1 Healthy lifestyle
A balanced diet rich in vitamins and minerals can support immune function and gum health. Consuming fruits, vegetables, whole grains, and lean proteins while avoiding excessive sugars and acidic foods is vital in minimizing the risk of plaque buildup and inflammation. Furthermore, avoiding smoking and limiting alcohol intake can significantly reduce the risk of developing gum disease.
5.2 Stress management
Hormonal fluctuations can lead to increased stress, which may adversely affect oral health by weakening the immune system. Women should engage in stress-reducing activities, such as exercise, meditation, or hobbies, to maintain both mental and oral health. Adequate sleep is also crucial in managing stress and promoting overall wellbeing.
5.3 Hormonal balance
Women experiencing hormonal changes, especially during pregnancy or menopause, should consult healthcare providers for guidance on managing these fluctuations. Hormonal imbalances can impact saliva production, increasing the risk of dry mouth, which in turn elevates the likelihood of developing gum disease. Maintaining open communication with healthcare professionals about any changes can help in adopting effective preventive measures.
Another method is also suggested for postmenopausal women such as hormone replacement therapy (HRT). Hormone replacement therapy (HRT) can be considered to alleviate various menopausal symptoms, including those affecting oral health. Although HRT has its risks, some studies suggest that it may help improve oral conditions by stabilizing fluctuating hormone levels. It is advisable for women to consult with healthcare providers to evaluate the benefits and potential side effects of HRT. However, studies on the dangers of using them have not reached a definitive conclusion; for example, Yuk et al. reported that menopausal hormone therapy increases the risk of oral cavity cancer in postmenopausal women [37]. Also, many women explore alternative treatments such as herbal remedies, acupuncture, and relaxation techniques to manage menopausal symptoms. Acupuncture, for example, has been shown to reduce the frequency and intensity of hot flashes. However, the effectiveness of these treatments can vary, and further research is needed to establish their safety and efficacy in relation to oral health.
6. Conclusion
Hormonal fluctuations throughout a woman’s life can significantly influence oral health. Understanding these effects is crucial for maintaining good oral hygiene practices and seeking timely dental care when necessary. Regular dental check-ups are important for managing these changes effectively.
However, the above findings from various studies all indicate the impact of hormonal changes on women’s oral and dental health. The cohort studies that evaluated the participants during a long term have reported different results, which show that by removing confounding factors, it cannot be definitely stated that there is a relationship between these hormonal changes and oral and dental problems. A cohort study conducted by Romandi et al. showed periodontitis was directly associated with a longer duration of breastfeeding and was inversely associated with artificial menopause and early and late menopausal ages [38]. But Rafiei et al. reported after adjusting for all potential confounders, no correlation was found between hormonal fluctuations and periodontal status, even in pregnancy and lactation [39]. Therefore, due to the many variables that can affect this phenomenon, it is not possible to reach a definite conclusion, but it is clear that hormonal changes change the conditions of the mouth, but the destructive results of these effects can be prevented by planning. Therefore, it can be concluded that routine dental visits, training from an early age, and educating the oral hygiene and proper nutrition for each period of lifetime can help women in preventing oral and dental complications caused by hormonal changes.
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