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Solitary Median Maxillary Central Incisor를 가진 II급 부정교합 치험례
정한나(Hannah Jeong),장인산(Insan Jang),최동순(Dong-Soon Choi) 대한구순구개열학회 2023 대한구순구개열학회지 Vol.26 No.2
Solitary median maxillary central incisor (SMMCI) is a rare congenital anomaly characterized by the absence of one of the maxillary central incisors, with the remaining incisor positioned centrally in the midline. While SMMCI can manifest independently, it can also be associated with holoprosencephaly, a condition resulting from incomplete or failed separation of the cerebral hemispheres. A 14.9-year-old female patient presented with a congenital absence of one maxillary central incisor and an anterior overjet of 14.3 mm. She was diagnosed with Class II division 1 malocclusion with SMMCI. The treatment approach included the extraction of the SMMCI and orthodontic treatment using the fixed orthodontic appliances. Following the orthodontic treatment, there was a notable enhancement in anterior occlusion and aesthetics, with proper space distribution for restorative procedures in the maxillary anterior region.
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급속 확장장치 또는 미니플레이트를 이용한 상악 전방 견인술이 혀 위치에 미치는 효과
최동순(Dong-Soon Choi),임재민(Jaemin Lim),정한나(Hannah Jeong),장인산(Insan Jang),차봉근(Bong-Kuen Cha) 대한치과교정학회 2023 대한치과교정학회 임상저널 Vol.13 No.1
Maxillary protraction treatment has been widely used for growing patients with Class III malocclusion. This report shows two patients who received maxillary protraction treatment using the facemask and the rapid maxillary expander (RME/FM) or the miniplates (Miniplate/FM) as an intraoral anchorage. The first patient was a 7.8-year-old female who received RME/ FM treatment for Class III malocclusion. Her occlusion and maxillomandibular relationship were improved and the tongue was positioned more inferiorly after treatment. The second patient was a 8.1-year-old female who received Miniplate/FM treatment. Her Class III malocclusion was corrected, and the tongue was positioned more superiorly after treatment. A preliminary study on the tongue position after maxillary protraction treatment was performed with a RME/FM group (n=10, 8.7 ± 0.8 years old) and Miniplate/FM group (n=10, 9.8 ± 1.6 years old). Pretreatment and posttreatment cephalometric radiographs were analyzed, and the tongue position was compared. The tongue position was significantly changed more posteriorly in the RME/FM group and more superiorly in the Miniplate/FM group. The tongue position might change after a maxillary protraction treatment, and it may differ depending on the type of the intraoral appliances for maxillary protraction.
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