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abstract:Odontomas are hamartomatous lesions composed of mature enamel, dentin, and pulp, and may be compound or complex depending on the extent of morphodifferentiation or on their resemblance to normal teeth. They are the most common benign odontogenic tumours, constituting 22% of all odontogenic tumours of the jaw. They are often non-aggressive and slow growing in nature, and are usually diagnosed on routine radiological examinations in the second decade of life. We report the case of an unusually large, painless, complex odontoma, which is a rare entity. It was located in the left posterior mandible and was associated with missing 1 st and 2 nd left mandibular molars. The diagnosis was confirmed following surgical excision and histopathological analysis of the lesion.

Objective: The objective of this study was to investigate the prevalence of signs and symptoms of temporomandibular disorders (TMDs) in dental students. Materials and methods:A total of 200 dental students, officially registered at The Oxford Dental College and Hospital, Bengaluru, voluntarily participated in this study. After obtaining the informed consent, the participants were asked to answer the questionnaire to evaluate TMD in undiagnosed cases. Then, examination of the temporomandibular joint (TMJ) and associated structures were done. Results:The present study has shown that the prevalence of signs and symptoms were 50.5 and 48% respectively, with no apparent gender difference. Joint sound was the most prevalent sign and TMJ noise being the most common symptom. Among oral parafunctional habits, lip/cheek biting and nail biting were common. Conclusion:Signs and symptoms of TMD were present even in nonpatient population, such as dental students. Thorough clinical assessments with standardized test are necessary for the early diagnostic process.

Several studies have demonstrated an independent association of deleterious oral habits such as smoking, betel quid chewing, and chewing tobacco with the occurrence of oral cancer. The potentially malignant conditions such as oral submucous fibrosis (OSF), leukoplakia, erythroplakia associated with smoking, and smokeless tobacco, have a greater prevalence in our country. OSF has high cancer turnover potentiality and if detected early can be prevented and treated successfully. Pindborg et al. demonstrated a malignant transformation rate of 4.5%. From the same area and patient group, 66 patients with OSMF were followed up for a period of 17 years by Murti et al., who recorded a malignant transformation rate of 7.6%. With a longer follow-up of the same group, the malignant transformation rates could increase further. Hereby, we are presenting a case series of patients on gutkha habit who reported to our department with OSF, the most common premalignant condition along with presence of a suspicious mass which on histopathologic examination diagnosed as oral squamous cell carcinoma.