A classification for assessing surgical difficulty in the extraction of mandibular impacted third molars: Description and clinical validation.

Quintessence International
Claudio StacchiGintaras Juodzbalys

Abstract

Surgical time prediction is an important factor to plan both clinical and organizational aspects of mandibular impacted third molar extraction. Many classifications have been proposed over the years, but their accuracy in surgical time prediction remained questionable. The present study introduced a modification of Juodzbalys and Daugela (JD) classification, and had the aim to validate its effectiveness in predicting the duration of the surgery. Three centers treated patients needing impacted mandibular third molar extraction, following inclusion and exclusion criteria. Extractions were performed following a standardized approach, and surgical time was recorded. A blinded assessor assigned scores to each extracted tooth, according to original and modified JD classifications. Differences among the operators were evaluated though Kruskal-Wallis test, and backward multiple linear regressions were performed to evaluate the variables associated with surgical time, considered as the main outcome of the study. 124 patients were treated with mandibular third molar extraction. Mean surgical time was 24.1 ± 22.2 minutes, with significant differences among the centers (P = .001). Surgical times among groups derived from both former and mo...Continue Reading

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