Prevalence of impacted teeth based on Winter's and Pell and Gregory's classifications

Abstract

Radiographic classification of third molar position is a tool used to measure preoperative difficulty in extractions. The Pell and Gregory and Winter classifications are the most widely used and are based on radiographic parameters. Objective: to evaluate the prevalence of lower third molar positions in patients treated in the extension project (Siso Project), which takes place at the State University of Ponta Grossa, considering these classifications. Methodology: a survey of 81 panoramic radiographs was conducted between 2023 and 2024, in addition to data such as gender and age. Subsequently, all radiographs were analyzed by three observers, who classified 162 lower wisdom teeth. Results: Vertical position (41.5%), grade A (59.2%), and class I (53.4%) had the highest prevalence according to the overall average of the observers, with a higher participation of female patients (73%) in the 21 to 25 age group (48%). Conclusion: there was a higher participation of female and young patients, with most elements having a vertical angulation, considered the third in ease of removal, and grade A and class I being the first in ease of removal.