Relationship between mandibular condyle and angle fractures and the presence of mandibular third molars.
10.5125/jkaoms.2015.41.1.3
- Author:
Deuk Hyun MAH
1
;
Su Gwan KIM
;
Seong Yong MOON
;
Ji Su OH
;
Jae Seek YOU
Author Information
1. Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University, Gwangju, Korea. sgckim@chosun.ac.kr
- Publication Type:Original Article
- Keywords:
Bone fracture;
Trauma;
Tooth
- MeSH:
Fractures, Bone;
Humans;
Mandibular Condyle*;
Mandibular Fractures;
Molar, Third*;
Odds Ratio;
Retrospective Studies;
Tooth
- From:Journal of the Korean Association of Oral and Maxillofacial Surgeons
2015;41(1):3-10
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVES: We retrospectively evaluated the impact of mandibular third molars on the occurrence of angle and condyle fractures. MATERIALS AND METHODS: This was a retrospective investigation using patient records and radiographs. The sample set consisted of 440 patients with mandibular fractures. Eruption space, depth and angulation of the third molar were measured. RESULTS: Of the 144 angle fracture patients, 130 patients had third molars and 14 patients did not. The ratio of angle fractures when a third molar was present (1.26 : 1) was greater than when no third molar was present (0.19 : 1; odds ratio, 6.58; P<0.001). Of the 141 condyle fractures patients, the third molar was present in 84 patients and absent in 57 patients. The ratio of condyle fractures when a third molar was present (0.56 : 1) was lower than when no third molar was present (1.90 : 1; odds ratio, 0.30; P<0.001). CONCLUSION: The increased ratio of angle fractures with third molars and the ratio of condyle fractures without a third molar were statistically significant. The occurrence of angle and condyle fractures was more affected by the continuity of the cortical bone at the angle than by the depth of a third molar. These results demonstrate that a third molar can be a determining factor in angle and condyle fractures.
