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KMID : 0355620220480010063
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Journal of Korean Association of Oral and Maxillofacial Surgeons
2022 Volume.48 No. 1 p.63 ~ p.67
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A new rationale for preservation of the mandibular third molar in orthognathic patients with missing molars
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Baik Un-Bong
Kim Yoon-Ji
Chae Hwa-Sung
Park Je-Uk
Julian Stefania
Lee Ui-Lyong
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Abstract
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Controversies exist regarding the need for prophylactic extraction of mandibular third molars in patients who plan to undergo orthognathic surgery. An 18-year-old male patient was diagnosed with mandibular prognathism and maxillary retrognathism with mild facial asymmetry. He had a severely damaged mandibular first molar and a horizontally impacted third molar. After extraction of the first molar, the second molar was protracted into the first molar space, and the third molar erupted into the posterior line of occlusion. The orthognathic surgery involved clockwise rotation of the maxil-lomandibular complex as well as angle shaving and chin border trimming. Patients who are missing or have damaged mandibular molars should be monitored for eruption of third molars to replace the missing posterior tooth regardless of the timing of orthognathic surgery.
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KEYWORD
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Orthodontics, Orthognathic surgery, Sagittal split ramus osteotomy, Temporary anchorage device, Third molar
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