Complicações pós-operatórias na extração de terceiros molares mandibulares

: avaliação dos fatores de risco

Abstract

Objectives: assessment of the relation between risk factors and post-op complications for third molar complex extractions. Materials and methods: Prospective Coorte study including patients with indication for mandibular third molar extraction. The patient was observed in two moments: enrollment and surgery (T0) and postoperative evaluation (T1), after one week. The surgery was supervised by oral surgery professors and the techniques used were selected according to the dental position and the difficulty of each case. Local anesthesia, suture and postoperative medication were the same for all cases. Postoperative pain was evaluated using a visual analogue scale at 3 and 8 days after extraction, and the occurrence of hematoma, bleeding, trismus, swelling and alveolitis was registered. The data collected was analyzed using appropriate descriptive and inferential statistics methods, using SPSS® software (v. 23.0). Results: A total of 30 third molars were extracted. The mean patient age was 21.23 ± 5.18 years, 13 males and 17 females. The most common complications were swelling (76.7%) and trismus (63.3%). There were no cases of dry socket. The risk factors with significant association with pain at the eighth day were older patients (p=0.024), trapezoidal flap (p=0.031) and long operative time (p=0.009). Smoking was the only factor associated with bleeding (p=0.026). The swelling had a significant association with total soft tissue impaction (p=0.031) and with the mesioangular position (p=0.001). Conclusion: The results suggest that age, cigarette smoking, teeth position and impaction level, type of incision and operative time are the predictive factors for the incidence of postoperative complications in mandibular third molar extraction.

Date of Award	21 Jul 2017
Original language	Portuguese
Awarding Institution	Universidade Católica Portuguesa
Supervisor	André Correia (Supervisor), Rui Pedro Barbosa de Figueiredo (Co-Supervisor) & Bruno Almeida (Co-Supervisor)