Stomatology ›› 2022, Vol. 42 ›› Issue (4): 327-331.doi: 10.13591/j.cnki.kqyx.2022.04.009

• Clinical Research • Previous Articles     Next Articles

Correlation between extraction of maxillary third molar and perforation of maxillary sinus based on CBCT

TANG Shiyu, AILIMAIERDAN Ainiwaer, MA Tinglin, SU Qingling, WANG Shan, WANG Ling   

  1. Maxillofacial Surgery Clinic of the First Affiliated Hospital (Affiliated Stomatological Hospital) of Xinjiang Medical University, Urumqi 830054,China
  • Revised:2021-11-29 Published:2022-04-28

Abstract: Objective To investigate and analyze clinical factors of maxillary third molar extraction and effects of various local anatomical factors on maxillary sinus perforation. Methods A total of 1 350 patients who underwent maxillary third molar extraction in the First Affiliated Hospital of Xinjiang Medical University from June 2017 to September 2021 were selected. CBCT was taken before operation. Statistical analysis was carried out from aspects of age, gender, preoperative symptoms, impaction, position, tooth inclination, root development, RS classification, vertical relationship, horizontal relationship, root number, root curvature, root furcation, incision, bone removal and so on. Results Multivariate analysis showed that partial eruption (OR=13.509), non eruption (OR=8.401), mesial impaction (OR=1.262), incision (OR=12.205), osteotomy (OR=23.422), root fracture (OR=15.320) were significantly correlated with maxillary sinus perforation. Root furcation 0° (OR=0.066) is a protective factor for maxillary sinus perforation. Conclusion Maxillary third molar partially erupted, not erupted, mesial impaction, intraoperative incision, intraoperative bone removal and root fracture can significantly increase the risk of maxillary sinus perforation. CBCT should be used to fully evaluate the relationship between anatomical structures of maxillary posterior tooth area before operation, and carry out accurate diagnosis and design, which can effectively reduce the incidence of maxillary sinus perforation.

Key words: maxillary third molar, CBCT, perforation of maxillary sinus, correlation

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