Dental and Medical Problems
2015, vol. 52, nr 1, January-March, p. 17–21
Publication type: original article
Evaluation of Risk Factors for Oroantral Communication During the Extraction of Third Upper Molar
Ocena czynników ryzyka połączenia ustno-zatokowego podczas ekstrakcji trzecich górnych zębów trzonowych
1 Department of Dental Surgery, Pomeranian Medical University in Szczecin, Szczecin, Poland
Background. Oroantral communication (OAC) is a common complication of tooth extraction, including the removal of upper third molar (UTM). Orthopantomograms (OPG) may be used to assess the position of UTM and to detect patients at high risk for OAC.
Objectives. The aim of this study was to use OPG to identify patients at risk of OAC after the extraction of UTM.
Material and Methods. Patients who underwent UTM extraction were divided into two groups. The study group consisted of 13 patients with OAC. The control group comprised of 50 subjects without OAC. Subsequently, OPG of all participants, taken before extraction, were analyzed retrospectively by SCANORA software version 5.1. The analysis included following variables: position of teeth 18 and 28 (according to Archer Third Molar Classification), distance between the apex of the maxillary third molar and the floor of the maxillary sinus, position of UTM in relation to the cemento-enamel junction of the adjacent second molar.
Results. In the study group, 92.1% of teeth 18 and 28 were in direct contact with the floor of the maxillary sinus. The type “d” of tooth impaction, according to Archer Third Molar Classification, significantly increased the risk of OAC (OR = 14.7; Cl (95%) = 1.4–156.2; p = 0.03). However, in the study group type “3a” was detected more frequently (15.9%).
Conclusion. The type “d” of tooth impaction, according to Archer Third Molar Classification has a significant impact on the occurrence of OAC during extraction of UTM.
radiography, upper molars, oral sinus communications
trzecie górne zęby trzonowe, połączenie ustno-zatokowe, radiografia
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