Introduction
There are numerous challenges faced by postmenopausal women in their life. Oral health is one of the important thing which often gets ignored. The impact of multiple oral sign and symptoms can range from physical to psychological stress. A practicing dental surgeon has to be his own sociologist and psychologist to understand that he is dealing with a patient, who not only has specific symptoms in the mouth but is changing and evolving human beings with complex inter relationship of biological, medical, psychological and social problems in the background. Menopause is a physiological process typically occurring in the fifth decade of life in women. Menopause refers to the permanent cessation of menstruation owing to loss of the ovarian follicular activity [1]. A diagnosis of natural menopause is made retrospectively following 12 months of amenorrhea with no pathologic association [2].
The two major female hormones are estrogen and progesterone. Apart from the reproductive tissue estrogen effect was found to have receptors in bone, endothelial cells, ligaments and gingival tissues, reductive effect on the keratinized gingival tissue which will lead to reduced effectiveness of the oral epithelium as a barrier [3-5].
The fact that oral health has a direct effect on overall physical and mental health of a person which has been established by a large number of studies and researches worldwide. Numerous symptoms associated with menopause vary from person to person. Oral health is an integral part of general health. oral manifestations is caused mainly due to initial decrease in estrogen, which directly leads to a vasomotor disturbance this in turn causes an increase in neurosis and it is the change in psychological status which results in the various oral symptoms [6]. The following are the oral manifestations noted at menopause.
Burning mouth syndrome
Burning mouth syndrome (BMS), also known as glossodynia or stomatodynia, mainly affects women in the fourth or fifth decade of life. The disorder shows a clear female predominance [7]. BMS is described as a burning sensation affecting different areas of the oral cavity. It is often bilateral, and is characterized by the absence of pathological findings. The accompanying symptoms may include dry mouth sensation or alterations in taste sensation [8-10]. The most commonly used local anesthetic agent, lidocaine. use of tricyclic antidepressants such as amitriptyline, desipramine, imipramine, clomipramine and nortriptyline (starting dose of 5-10 mg/day and gradually increases to 50 mg/day) are useful in treating BMS. Topical application of capsaicin (0.025% cream) has been used in BMS as a desensitizing agent [11].
Xerostomia
Xerostomia is dryness of mouth caused by decreased salivary secretion. Saliva plays a major role in self-cleaning of oral cavity. It acts as natural lubricating and immunomodulation agent which inhibit various fungal diseases and dental caries. Estrogen hormone receptors have been detected in the oral mucosa [12-16]. Menopause leads to decrease in salivary flow rates and alteration in levels of electrolytes in the saliva [16, 17]. Certain studies conducted showed that salivary flow decreases in menopausal women with increase in salivary IgA and total proteins [3]. Hormone replacement along with alendronate and calcium improved saliva flow rate in women with oral symptoms [18]. Through clinical examination like silometery it is possible to check the viscosity and flow of saliva. Systemic sialogogues like pilocarpine, cevimeline and citrus lozenges are advised [19]. Patients should be advised to brush their teeth using fluoride toothpaste diligently, avoid sweet food to prevent dental caries.
Gingiva and periodontium
Gingiva is the mucosal tissue that lies over the mandible and maxilla inside the mouth while periodontium is the specialized tissues that both surround and support the teeth. Postmenopausal women present with periodontal disease more frequently and more severe [18]. Postmenopause can lead to changes in inflammatory mediators, vascular permeability and growth and differentiation of fibroblasts. There are estrogen receptors in osteoblasts and fibroblasts of periodontal tissues, respond depending on levels of hormones in different stages of reproductive life and thus affect the health of the periodontium [19-21]. Moreover, decrease in female hormones suppresses the intestinal absorption of calcium, which in turn increases the serum parathyroid hormone and, as a result, the bone resorption is increases. Good oral hygiene maintaining tips from dentist like proper brushing eliminates plaque from the teeth surfaces, flossing removes food particles and plaque from interdental region and under the gum line. Antibacterial mouth rinses can reduce bacteria that cause plaque.
Mucosal changes
Oral mucosa resembles vaginal mucosa in its histology as well as its response to estrogens. Sex hormone receptors have been detected in the oral mucosa [12-14]. Menopausal gingivostomatitis where the gingival surfaces appears pale dry and shiny with erythematous appearance and occasional bleeding [22]. Apart from this, oral mucosal disorders include candidiasis, pemphigus vulgaris, benign mucosal pemphigoid. Moreover, stress causing anxiety and depression which is mainly causes of lichen planus and oral ulcerations is also noted in postmenopausal women. Oral lichen planus is commonly noted at the end of fourth decade and fifth decade of life with female predilection [23]. Hormonal therapy with estradiol in patients with identifiable estrogen receptors at the oral epithelial level may be beneficial in certain oral conditions [3, 22].
Neurological disorders
Trigeminal neuralgia is characterized by severe unilateral, lancinating, “electric-shock” like sharp pain usually in the middle and lower third of the face. This condition is noted in postmenopausal women occasionally mostly due to compression of superior cerebellar artery on ophthalmic, maxillary and mandibular branches of trigeminal nerve [24]. Alzheimer’s disease and atypical facial pain/neuralgia sometimes also noted postmenopausal women [25]. Carbamazepine, oxcarbazepine, lamotrigine, gabapentin, pregabalin and baclofen are few drug of choice which are given in various doses to reduce trigeminal neuralgia [26].
Eating disorders
Stress sometimes causes eating disorders. Due to reduced salivary secretion causing xerostomia caused alter in taste sensation. This also acts as a contributing factor for eating disorder. Self-induced vomiting and resultant regurgitation of gastric contents. The stomach acid can cause erosion, increased incidence of caries and overall discoloration of the teeth due to persistent vomiting. Smooth erosion of enamel, enlarged parotid glands, trauma to oral mucous membrane and pharynx resulting from use of fingers, combs, and pen to induce vomiting, angular cheilitis, dehydration, and erythema may be observed in menopausal women suffering from eating disorders [27].
Osteoporosis
Estrogen deficiency leads to upregulation of immune cells (macrophages and monocytes) and osteoclasts, which are responsible for a greater production of bone-resorbing cytokines [28-30]. Systemic osteoporosis leading to generalized bone loss may make the jaws susceptible to advanced alveolar bone loss, decreased bone mineral density. This in turn can lead to early tooth loss making the women edentulous. Osteoporosis is known as a “silent disease,” because the loss of bone mass does not cause symptoms [31, 32]. A detail radiographs, periodontal probing is indicated to check for bone reabsorption and its effect on dentition. The prevalence of osteoporotic fractures increases from 4% in women at age 50 to 52% of women age 70 years [33].
Menopause hormone therapy is recommended for women who are at risk of osteoporotic fractures and who are younger than 60 years old, while for those who are older than 60 years, menopause hormone therapy is not recommended if it is intended only for the prevention of osteoporotic fractures [34] calcium and vitamin D supplements also helps to induce the bone mineral density.
Conclusions
Menopause is a physiological phase that gives adaptive change at systemic and oral level. The practicing dental surgeon must remember that he is treating a human being with psychological and emotional needs. Menopause has been proven that it highly affects oral and dental structures which need to be managed. The dental treatment of such patients involves a series of particularities that should be taken into account, like the use of salivary secretion stimulators or saliva substitutes in cases of hyposialosis. Proper protection and prevention with good control of bacterial plaque, contributes to reduce the risk of many infections within the oral cavity. Oral health specialists and gynecologists should be aware of the problems associated with menopause and need to provide these women complete health package consisting of oral health care as an integral part.
