Đặc điểm lâm sàng, cận lâm sàng răng khôn hàm dưới mọc lệch/ngầm với độ khó từ trung bình đến cao theo Pederson

Abstract

A cross-sectional study was conducted on 265 patients undergoing mandibular third molar extraction at the Center of Advanced Dental Technology, Hanoi Medical University; the purpose of this study was to evaluate the clinical and radiographic characteristics of impacted or malpositioned mandibular third molars with moderate to high surgical difficulty according to the Pederson classification. Patient history, clinical examination, and radiographic imaging were collected, and data were analyzed using statistical tests and multivariable logistic regression. The mean age was 27.92 ± 7.64 years old, and females accounted for 63.02%. The most common positions were mesioangular, horizontal, and impactions, with mesioangular impaction being the most prevalent. Complications occurred in 58,55% of cases, predominantly pericoronitis. Teeth in vertical or distoangular positions had a higher risk of pericoronitis and were associated with significantly increased surgical difficulty. Most teeth had roots located ≥ 1mm from the inferior alveolar canal, and vertical or distoangular teeth exhibited higher complication rates and greater surgical difficulty than other angulations.