Acidentes e complicações associadas as exodontias dos terceiros molares superiores: uma revisão sistemática

Introdução: A extração do terceiro molar continua sendo um das procedimentos mais realizados por cirurgiões maxilofaciais, e a maioria dos terceiros molares são removidos sem dificuldades intra ou pós-operatórias, entretanto esse procedimento pode gerar vários acidentes e complicações. Objetivo: Revisar os fatores associados aos acidentes e complicações envolvidos com a remoção dos terceiros molares superiores, levando em conta fatores de risco . Metodologia: Os seguintes bancos de dados foram pesquisados: PubMed e LILACS seguindo a recomendação PRISMA, utilizando palavras-chave específicas: Molar Third; Tooth Extration ; Complications; e variações de outras palavras-chave para complemento da pesquisa. Resultados e discussão :Fatores de risco como gênero, tempo de cirurgia, formato radicular, planejamento, infecção e posicionamento dentário foram associados aos possíveis acidentes e complicações como fratura da tuberosidade, deslocamento, dentário para os espaços faciais, lesões nervosas e comunicação bucosinusal, assim como os possíveis tratamentos utilizados. Conclusão: O estudo concluiu que um planejamento criterioso deve ser realizado para minimizar o risco de lesões, e caso alguma intercorrência ocorra um cirurgião habilitado e experiente deve ser responsável pela conduta do caso.

Immediate Removal of a Dislocated Dental Fragment from the Submandibular Space during Extraction of the Lower Third Molar: Case Report and Literature Review

This paper aims to report a case of radicular displacement to the submandibular space and to review the literature seeking reports of dental displacements / fragments published in the period from 2007 to 2017 in PubMed evidencing risk factors, prevention and forms of treatment. In this article a case of displacement of dental fragments to the submandibular space with immediate removal is reported. The third molar or its roots displacement into facial spaces is a rare situation. The preoperative surgical planning is fundamental to avoid this type of complication. The association of (1) good surgical planning, (2) surgical technique utilization and adequate instruments, and (3) the surgeon experience are determining factors to avoid the occurrence of this complication. Keywords: Molar, Third. Surgery, Oral. Intraoperative Complications. ResumoA extração de terceiros molares é o procedimento cirúrgico mais frequente nos consultórios odontológicos. Como qualquer cirurgia, existe a possibilidade de complicações trans e pós-operatórias. O deslocamento desses dentes ou fragmento dentário para espaços faciais é raro, com frequência extremamente baixa. Este trabalho tem como objetivo relatar um caso de deslocamento radicular para o espaço submandibular e revisar a literatura buscando relatos de deslocamentos dentários/fragmentos publicados no período de 2007 a 2017 no Pubmed evidenciando fatores de risco, prevenção e formas de tratamento. Nesse artigo nós relatamos um caso de deslocamento de um fragmento radicular para o espaço submandibular, sendo este removido imediatamente. O deslocamento do terceiro molar ou de fragmentos radiculares para os espaços faciais é raro. A avaliação pré-operatória é fundamental para evitar esse tipo de complicação. A associação entre (1) planejamento cirúrgico correto, (2) utilização de técnica e materiais corretos e (3) experiência do profissional, são fatores determinantes para evitar esse tipo de complicação. Palavras-chave: Dente Serotino. Cirurgia Bucal. Complicações Intraoperatórias.

Thermodynamic Investigation of Polyhydroxylated Derivatives of Light Fullerenes

Isobaric heat capacities of C[Formula: see text](OH)[Formula: see text] and C[Formula: see text](OH)[Formula: see text] fullerenols were measured using adiabatic calorimetry in the temperature range of 0–320[Formula: see text]K along with standard thermodynamic functions: [Formula: see text], [[Formula: see text]] and [[Formula: see text]]. Furthermore, the molar entropy of formation and the molar third law entropy of C[Formula: see text](OH)[Formula: see text] and C[Formula: see text](OH)[Formula: see text] in crystalline state at 298.15[Formula: see text]K were calculated.

Prophylactic removal of unerupted asymptomatic third molars: is it justifiable?

Objective: to review the literature currently available on the evidence that does or does not justify the prophylactic extraction of unerupted asymptomatic third molars. Material and Methods: the electronic databases PubMed, Capes Periodicals, Web of Science and Scopus were searched from November to December 2016 by two authors, simultaneously, using as search terms: Terceiro Molar/Molar, Third AND Extração Profilática/Prophylatic Removal OR Prophylatic Extraction. We included articles from original research and clinical trials published in English and Portuguese. No limits were applied to the date of publication. Review articles and clinical case reports were removed. Results: we identified 13 studies that addressed, at some aspect, the prophylactic removal of unerupted asymptomatic third molars. The results of this literature review which alluded to the potential for the formation of pathological alterations in asymptomatic third molars are conflicting; While some justifies the prophylactic procedure based on the possible formation of associated lesions, other scientific evidence does not support such practice. Conclusion: in view of the conflicting viewpoints found in the literature, the prophylactic removal of asymptomatic third molars requires case-by-case evaluation of each patient, and the decision-making process, regarding the retention versus the prophylactic removal of these teeth should be based on scientific evidence combined with the clinical experience of the professional.

Mandibular angle fracture due impacted third molar inclusion: case report

Mandibular angle region is enshrined in literature as a fragile area because of the third molar presence further when its impaction shaping up as a rare complication associated with more attempts to extraction of the tooth. Several factors influence the possibility of fracture as gender, age, degree of dental inclusion and presence of associated injuries. The best form of treatment depending on the case is surgical, consisting of placing the intraosseous fixing devices. The purpose of facilitated and a conservative approach for the treatment of fractures of mandibular angle is displayed. Also, demystify the contraindication of intraoral access for cases of unfavorable fractures to displacement. This study, in addition, been reports two clinical cases of mandibular angle fractures in the presence of a third included molar treated by means of intraoral access set by Champy technique of external oblique line with the use of single board in office dental. Results: This approach is well suited to cases with little displacement of the fracture line and when the patient shows collaborator. This technique as well as fast, reduces spending on hospital besides reducing postoperative sequelae because it prevents the need for extra-oral access.Descriptors: Fracture Fixation; Therapeutics; Anesthesia, Local; Molar, Third.