Alvira González, JoaquínBarbosa de Figueiredo, Rui PedroValmaseda Castellón, EduardoQuesada Gómez, CarmenGay Escoda, Cosme2018-02-282018-02-282017-01-011698-4447https://hdl.handle.net/2445/120346BACKGROUND: Several publications have measured the difficulty of third molar removal, trying to establish the main risk factors, however several important preoperative and intraoperative variables are overlooked. MATERIAL AND METHODS: A prospective cohort study comprising a total of 130 consecutive lower third molar extractions was performed. The outcome variables used to measure the difficulty of the extraction were operation time and a 100mm visual analogue scale filled by the surgeon at the end of the surgical procedure. The predictors were divided into 4 different groups (demographic, anatomic, radiographic and operative variables). A descriptive, bivariate and multivariate analysis of the data was performed. RESULTS: Patients' weight, the presence of bulbous roots, the need to perform crown and root sectioning of the lower third molar and Pell and Gregory 123 classification significantly influenced both outcome variables (p< 0.05). CONCLUSIONS: Certain anatomical, radiological and operative variables appear to be important factors in the assessment of surgical difficulty in the extraction of lower third molars.7 p.application/pdfeng(c) Medicina Oral SL, 2017Extracció dentalCirurgia dentalTeeth extractionDental surgeryinfo:eu-repo/semantics/article6703082018-02-28info:eu-repo/semantics/openAccess27918736