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Predictive factors of difficulty in lower third molar extraction: a prospective cohort study

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BACKGROUND: 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.

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Medicina Oral, Patología Oral y Cirugía Bucal, 2017, vol. 22, num. 1, p. 108-114

# metadata.dc.title[].value
Predictive factors of difficulty in lower third molar extraction: a prospective cohort study