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The study aimed to measure the pre-operative oral health-related quality of life (OHRQoL) and to identify patient and teeth pathologies associated with worse OHRQoL among patients attending mandibular third molar tooth extraction. Data were collected preoperatively from 199 patients attending surgical removal of their mandibular third molar. To that end, we measured the Oral Health Impact Profile-14 (OHIP-14) and analyzed its association with: (1) demographics; (2) health-related behaviors such as smoking, alcohol consumption, physical activity, and dietary habits; (3) Plaque Index (PI); (4) Decay, Missing, and Filled Teeth (DMFT); and (5) clinical characteristics related to third molar extraction, such as the indication for extraction, tooth angulations, and radiographic pathology. The mean age of the study population was 21.5 ± 3.2 years and the mean OHIP-14 global score was 22.5 ± 8.3. The present study identified patient and teeth profiles that are associated with worse pre-operative OHRQoL in patients attending mandibular third molar extraction. The "vulnerable patient" profile includes poor health-related behaviors, particularly the performance of physical activity less than once a week ( p = 0.028). The "disturbing teeth" profile includes higher plaque scores ( p = 0.023) and specific characteristics of the third molar teeth, such as pericoronitis ( p = 0.027) and radiolucency around third molars in panoramic radiography ( p &lt; 0.001). These findings support the hypothesis that OHRQoL is a complex phenomenon which is associated with the patient's health-related behaviors as well as with specific tooth pathologies.

Pre-Operative Oral Health-Related Quality of Life in Patients Attending Surgical Removal of Mandibular Third Molar Teeth