Miniscrew-assisted nonsurgical palatal expansion before orthognathic surgery for a patient with severe mandibular prognathism

医学 正颌外科 颅面 牙科 口腔正畸科 骨科手术 错牙合 外科 精神科
作者
Kee Joon Lee,Young Chel Park,Joo Young Park,Woo Sang Hwang
出处
期刊:American Journal of Orthodontics and Dentofacial Orthopedics [Elsevier]
卷期号:137 (6): 830-839 被引量:221
标识
DOI:10.1016/j.ajodo.2007.10.065
摘要

A transverse maxillary deficiency in an adult is a challenging problem, especially when it is combined with a severe anteroposterior jaw discrepancy. The demand for nonsurgical maxillary expansion might increase as patients and clinicians try to avoid a 2-stage surgical procedure—surgically assisted rapid palatal expansion followed by orthognathic surgery—and detrimental periodontal effects and relapse. In this regard, a miniscrew-assisted rapid palatal expansion was devised and used to treat a 20-year-old patient who had severe transverse discrepancy and mandibular prognathism. Sufficient maxillary orthopedic expansion with minimal tipping of the buccal segment was achieved preoperatively, and orthognathic surgery corrected the anteroposterior discrepancy. The periodontal soundness and short-term stability of the maxillary expansion were confirmed both clinically and radiologically. Effective incorporation of orthodontic miniscrews for transverse correction might help eliminate the need for some surgical procedures in patients with complex craniofacial discrepancies by securing the safety and stability of the treatment, assuming that the suture is still patent. A transverse maxillary deficiency in an adult is a challenging problem, especially when it is combined with a severe anteroposterior jaw discrepancy. The demand for nonsurgical maxillary expansion might increase as patients and clinicians try to avoid a 2-stage surgical procedure—surgically assisted rapid palatal expansion followed by orthognathic surgery—and detrimental periodontal effects and relapse. In this regard, a miniscrew-assisted rapid palatal expansion was devised and used to treat a 20-year-old patient who had severe transverse discrepancy and mandibular prognathism. Sufficient maxillary orthopedic expansion with minimal tipping of the buccal segment was achieved preoperatively, and orthognathic surgery corrected the anteroposterior discrepancy. The periodontal soundness and short-term stability of the maxillary expansion were confirmed both clinically and radiologically. Effective incorporation of orthodontic miniscrews for transverse correction might help eliminate the need for some surgical procedures in patients with complex craniofacial discrepancies by securing the safety and stability of the treatment, assuming that the suture is still patent. Nonsurgical palatal expansion before orthognathic surgeryAmerican Journal of Orthodontics and Dentofacial OrthopedicsVol. 138Issue 4PreviewWe read with interest the case report, “Miniscrew-assisted nonsurgical palatal expansion before orthognathic surgery for a patient with severe mandibular prognathism” (Lee KJ, Park YC, Park JY, Hwang WS. Am J Orthod Dentofacial Orthop 2010;137:830-9). Although the result achieved was excellent, we wonder whether the treatment protocol was more involved than necessary. Full-Text PDF
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