Radiographic assessment of agenesis of third molars andpara-radicular third molar radiolucencies in populationof age group 18-25 years old: a radiographic survey / Avaliação radiográfica da gênese e radiolucidezperirradicular de terceiros molares em população de faixaetária de 18-25 anos: um levantamento radiográfico

Introduction: Due to biological, cultural and evolutionary changes with time, humans have experienced adecreased dependency on all tooth types. Because of this, the number of certain teeth which are no longernecessary for function are either getting increasingly impacted or are not developing at all. This is especiallythe case where third molars are concerned. Objective: To assess the prevalence of agenesis of third molarsand para-radicular third molar radiolucencies in population of age group 18-25 years. Materials and methods:Five hundred patients of age ranging from 18 to 25 years old were selected randomly and subjectedto undergo conventional panoramic radiographic procedure. Results: 35.4% patients of our study populationrevealed agenesis of one of the third molars among the four third molars. Agenesis of right maxillarythird molar is quite significant as p = 0.030; and only 3.4% revealed the prevalence of para-radicular thirdmolar radiolucencies. Conclusion: As time goes by, agenesis of the third molars is increasing, so they canbe considered as vestigial. However, etiology of the para-radicular third molar radiolucencies is unknown.Hence, further research is needed to describe the nature as well as outcome of mandibular para-radicularthird molar radiolucencies.

Introdução: Em virtude de alterações biológicas, culturais e evolutivas com o tempo, os seres humanos têmexperimentado uma diminuição da dependência em todos os tipos de dentes. Por isso, os dentes que já nãosão necessários para a função estão ficando cada vez mais impactados ou não estão sequer se desenvolvendo.Este é especialmente o caso dos terceiros molares. Objetivo: Avaliar a prevalência de agenesia dos terceirosmolares e radiolucidez perirradicular em terceiros molares em uma população com faixa etária de 18-25 anos.Materiais e métodos: Quinhentos pacientes entre 18-25 anos foram selecionados aleatoriamente e submetidosa um exame radiográfico panorâmico convencional. Resultados: 35,4% dos pacientes da população deestudo revelaram agenesia de um dos terceiros molares entre os quatro terceiros molares. Agenesia do terceiromolar superior direito foi bastante significativa com valor p = 0,030 e apenas 3,4% revelaram a prevalência deradiolucidez perirradicular nos terceiros molares. Conclusão: Com o tempo, a agenesia dos terceiros molaresestá aumentando, de modo que podem ser considerados vestigiais. Porém, a etiologia da radiolucidez perirradicularnos terceiros molares é desconhecida. Portanto, mais pesquisas são necessárias para descrever a natureza,bem como as consequências de radiolucidez perirradicular em terceiros molares inferiores.

Pleomorphic adenoma of minor salivary gland: a case report

Introduction : World literature suggests salivary gland tumors account for less than 3% of the head and neck tumors and benign pleomorphic adenoma of minor salivary glands arising de novo is very rare.Objective,case report and Conclusion: A case of pleomorphic adenoma of minor salivary glands in the buccal mucosa in a 55 year-old female is discussed. It includes review of literature, clinical features, histopathology, radiological findings and treatment of the tumor, with emphasis on diagnosis. The salivary glands may present with a diverse range of lesions presenting a challenge to even the most experienced clinician and pathologist. Resection with surrounding dispensable normal tissues is the key to successful treatment of such tumors.

Colposcopy: A new ray in the diagnosis of oral lesions.

Oral squamous cell carcinoma is the most common cancer of the oral cavity. The survival rates for oral cancer patients will significantly be improved provided lesions are detected and treated at the infancy stage. Early diagnosis is therefore of paramount importance. Histopathological examination is considered as the gold standard in diagnosing oral lesions. Therefore, the selection for a biopsy site is highly significant. In this article, we present a current review of the colposcope and oral application of the colposcopy technique and its use as an adjunct in the early diagnosis of premalignant and malignant lesions of the oral mucosa. We stress upon the fact that colposcopy (direct oral microscopy) of oral mucosal lesions helps in selecting more representative sites for biopsy than routine clinical examination alone. Because of its precision, versatility, ease of use, and being a non-invasive technique, colposcopy might prove to be a useful step toward continuing to learn and improve the care for our patients.