Aim: To determine the prevalence and classification of bifid mandibular canals using cone beam computed tomography (CBCT). Methods: The sample comprised 300 CBCT scans obtained from the Radiology and Imaging Department database at São Leopoldo Mandic Dental School, Campinas, SP, Brazil. All images were performed on Classic I-Cat® CBCT scanner, with standardized voxel at 0.25 mm and 13 cm FOV (field of view). From an axial slice (0.25 mm) a guiding plane was drawn along the alveolar ridge in order to obtain a cross-section. Results: Among 300 patients, 188 (62.7%) were female and 112 (37.3%) were male, aged between 13 to 87 years. Changes in the mandibular canal were observed in 90 patients, 30.0% of the sample, 51 women (56.7%) and 39 men (43.3%). Regarding affected sides, 32.2% were on the right and 24.5% on the left, with 43.3% bilateral cases. Conclusions: According to the results obtained in this study, a prevalence of 30% of bifid mandibular canals was found, with the most prevalent types classified as B (mesial direction) and bilateral.

Introdução: Atualmente, os índices do edentulismo diminuíram, embora a preocupação pela reabilitação dentária aumentaram, o que gera foco de estudos sobre as expectativas que essa população procura os serviços dessa área da odontologia. Objetivo: O objetivo deste estudo foi fazer uma revisão de literatura sobre os impactos psicossociais que a estética dentária pode causar na qualidade de vida de sujeitos que são submetidos a próteses convencionais e sobre implantes. Método: Foram selecionados artigos disponíveis na base de dados MEDLINE (Medical Literature Analysis and Retrieval System on-line) publicados em inglês, no período compreendido entre 2008-2018; Resultados: Os principais resultados encontrados foi que a estética dentária tem influência direta na autoestima e por isso os indivíduos sofrem com uma barreira pessoal e profissional, manifestando negativamente na sua qualidade de vida. Porém, população que são reabilitados com próteses sobre implantes parece ter maior preocupação com sua estética e por isso sofreram mais com depressão, ao passo que isso aumenta quando se trata de dentes posicionados anteriormente na arcada dentária. Conclusão: Conclui-se que a estética dentária influencia psicossocialmente em um indivíduo, causando impactos na qualidade de vida de edêntulos, além disso, há diferenças psicológicas na população que busca reabilitação com próteses convencionais e implantossuportadas e a posição que os dentes perdidos ocupavam no arco dentário.Descritores: Próteses e Implantes; Estética Dentária; Qualidade de Vida.ReferênciasGavric A, Mirceta D, Jakobovic M, Pavlic A, Zrinski MT, Spalj S. Cranio dento facial characteristics, dental esthetics–related quality of life, and self-esteem. Am J Orthod Dentofacial Orthop. 2015;147(6):711-18.Fava J, Lin M, Zahran M, Jokstad A. Single implant‐supported crowns in the aesthetic zone: patient satisfaction with aesthetic appearance compared with appraisals by laypeople and dentists. Clin Oral implants Res. 2015;26(10): 1113-20.de Couto Nascimento V, de Castro Ferreira Conti AC, de Almeida Cardoso M, Valarelli DP, de Almeida-Pedrin RR. Impact of orthodontic treatment on self-esteem and quality of life of adult  patients  requiring oral rehabilitation. Angle Orthod. 2016;86(5):883-85.Pereira CP, Abreu LG, Dickc BD, de Luca Canto G, Paiva SM, Flores-Mir C. Patient satisfaction after orthodontic treatment combined with orthognathic surgery: A systematic review. Angle Orthod. 2016;86(3):495-508.Chen P, Yu S, Zhu G. The psychosocial impacts of implantation on the dental aesthetics of missing anterior teeth patients. Br Dent J. 2012; 213(11):E20Benic GI, Wolleb K, Sancho-Puchades M, Hämmerle CH. Systematic review of parameters and methods for the professional assessment of aesthetics in dental implant research. 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Patient Prefer Adherence. 2014;8:353-59.Patel P, Brown S, Nazarian A. A better quality of life with implant-retained overdentures. Dent Today. 2012;31(1):156,158.Torres BL, Costa FO, Modena CM, Cota LO, Côrtes MI, Seraidarian PI. Association between personality traits and quality oflife in patients treated with conventional mandibular dentures or implant-supported overdentures. J Oral Rehabil. 2011;38(6):454-61.Al-Omiri MK, Hammad OA, Lynch E, Lamey PJ, Clifford TJ. Impacts of implant treatment on daily living. Int Oral Maxillofac Implants. 2011; 26(4):877-86.Fernandez-Estevan LF, Selva-Otaolaurruchi EJ, Montero J, Sola-Ruiz F. Oral health-related quality of life of implant-supported overdentures versus conventional complete prostheses: Retrospective study of a cohort of edentulous patients. Med Oral Patol Oral Cir Bucal. 2015;20(4):e450-58.Komagamine Y, Kanazawa M, Kaiba Y, Sato Y, Minakuchi S, Sasaki Y. 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ResumoIntrodução: O conhecimento da morfologia normal da mandíbula humana e suas possíveis variações anatômicas, que ocorrem, são de fundamental importância na prática odontológica, especialmente nas áreas da cirurgia e implantodontia. A região retromolar é delimitada pela margem anterior do ramo da mandibular, crista temporal e face distal do último molar inferior. Nessa área pode ser observado o canal retromolar que pode emergir pelo forame retromolar. Objetivo: O presente estudo objetiva avaliar a ocorrência de canais retromolares em exames de tomografia computadorizada de feixe cônico e relaciona-la com suas possíveis repercussões clínicas. Material e método: Foram selecionadas 300 imagens de TCFC provenientes do Departamento de Radiologia da Faculdade São Leopoldo Mandic. O presente estudo foi do tipo observacional descritivo e todas as imagens foram processadas e trabalhadas no software XoranCat  do próprio equipamento. Resultado: Dos 300 exames de TCFC analisados, os canais mandibulares eram únicos em 210 (70,0%). Nos demais 90 casos constatou-se a presença alterações anatômicas no canal mandibular, indicando que a taxa de prevalência dessa condição na amostra foi de 30,0%. A ocorrência dos canais retromolares foi observada em 15 pacientes da amostra total (5,0%), sendo 06 pacientes do gênero masculino e 09 pacientes do gênero feminino. Conclusão: Ratifica-se a importância de um minucioso conhecimento da região retromolar devido a grande prevalência de cirurgias realizadas na região posterior da mandíbula, a fim de ter previsibilidade nos planejamentos e consequentemente otimizar os procedimentos anestésicos e cirúrgicos realizados, minimizando as falhas anestésicas e os acidentes cirúrgicos.Descritores: Cirurgia; anatomia; mandíbula. AbstractIntroduction: Knowledge on the normal morphology of the human mandible and its possible anatomical variations are of fundamental importance in dental practice, especially in the areas of surgery and implantodontics. The retromolar region is delimited by the anterior margin of the ramus of the mandible, the temporal crest and the distal surface of the last lower molar. In this area, a retromolar canal may be observed emerging through the retromolar foramen. Objective: This study aims to evaluate the prevalence of retromolar canals in cone beam computed tomography (CBCT) images and to correlate it with their possible clinical repercussions. Material and method: 300 CBCT images were selected from the Department of Radiology of the São Leopoldo Mandic Dental School. This was an observational descriptive study and all the images were processed and analyzed on XoranCat  . Result: Of the 300 CFCT scans analyzed, a single mandibular canal was observed in 210 (70.0%). In the remaining 90 cases, anatomical changes were observed relating to this canal, indicating that the prevalence of this condition in this sample was 30%. The prevalence of retromolar canals was observed in 15 patients (5.0%), of which 06 were in males and 09 in females. Conclusion: The importance of a full ...

Although it is a rare neoplasm, intraosseous mucoepidermoid carcinoma is the most common and well-recognized intraosseous salivary gland tumor. Usually, it presents as an asymptomatic volume increase and most patients perceive the presence of the lesion within a year or less of evolution. They are more common in middle-aged adults and have a slight female predilection. They are three times more common in the mandible than in the maxilla and are most often found in the area of the molars and mandibular ramus. The most frequently present symptom is cortical bulging, although some lesions may be discovered as an accidental finding on radiographs. The main modality of treatment for patients with this neoplasm is radical surgical resection, offering a greater chance of cure than the more conservative procedures, such as enucleation or curettage, due to the great possibility of recurrence and tumor metastasis. This paper reports a rare case of intraosseous mucoepidermoid carcinoma occasionally discovered after panoramic radiography of the jaws, which was treated with segmental resection through hemimandibulectomy.

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