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Relationship between mandibular condyle and angle fractures and the presence of mandibular third molars

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. Er...

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Detalles Bibliográficos
Autores principales: Mah, Deuk-Hyun, Kim, Su-Gwan, Moon, Seong-Yong, Oh, Ji-Su, You, Jae-Seek
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Association of Oral and Maxillofacial Surgeons 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4347027/
https://www.ncbi.nlm.nih.gov/pubmed/25741462
http://dx.doi.org/10.5125/jkaoms.2015.41.1.3
Descripción
Sumario: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.