Le Fort I 골절단술을 이용한 상악골 전진 후 안정성에 관한 3차원적 연구
Three Dimensional Study on the Postoperative Stability after Advancement of Maxilla Using Le Fort I Osteotomy
오철중, 허정우, 정광, 조민성, 정승곤, 박홍주, 오희균, 유선열, 국민석,
소속 상세정보
오철중 ( Oh Chul-Jung ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
허정우 ( Hur Jung-Woo ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
정광 ( Chung Kwang ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
조민성 ( Cho Min-Sung ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
정승곤 ( Jung Seung-Gon ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
박홍주 ( Park Hong-Ju ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
오희균 ( Oh Hee-Kyun ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
유선열 ( Ryu Sun-Youl ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
국민석 ( Kook Min-Suk ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
KMID : 1036320130350020082
Abstract
Purpose: This study evaluated postoperative maxillary stabilities in patients with skeletal Class III malocclusion who were taken both maxillary advancement surgery and mandibular retrusive surgery, using Le Fort I osteotomy, through three-dimensional computed tomography.
Methods: We selected 14 patients who were taken postoperative three-dimensional computerized tomography at the time before surgery, immediately after surgery, six months after surgery among the patients undergone both maxillary advancement surgery using Le Fort I osteotomy and mandibular retrusive surgery using bilateral sagittal split ramus osteotomy. We measured and compared the vertical distance of A-point and posterior nasal spine (PNS), the horizontal distance of A-point and PNS in transverse plane and coronal plane of the three-dimensional reconstructed images, respectively.
Results: In transverse plane, the distance difference between immediately after surgery ($S_1$ 수식 이미지) and immediately before surgery ($S_0$ 수식 이미지) of A-point was $-0.04{\pm}1.80$ 수식 이미지 mm, $S_2$ 수식 이미지 and $S_0$ 수식 이미지 was $-0.15{\pm}1.69$ 수식 이미지 mm, and between $S_1$ 수식 이미지 and $S_2$ 수식 이미지 was $0.11{\pm}0.58$ 수식 이미지 mm. There were no significant differences between these data (P>0.05). In transverse plane, the distance between $S_1-S_0$ 수식 이미지 of PNS was $-3.87{\pm}2.37$ 수식 이미지 mm, $S_2-S_0$ 수식 이미지 of PNS was $-3.79{\pm}2.39$ 수식 이미지 mm, and $S_1-S_2$ 수식 이미지 of PNS was $-0.08{\pm}0.18$ 수식 이미지 mm. There were significant differences between these data (P<0.05). In coronal plane, the distance between $S_1-S_0$ 수식 이미지 of A-point was $3.99{\pm}0.86$ 수식 이미지 mm, $S_2-S_0$ 수식 이미지 was $3.57{\pm}1.09$ 수식 이미지 mm, and $S_1-S_2$ 수식 이미지 was $0.42{\pm}0.42$ 수식 이미지 mm. There were significant differences between these data (P<0.05). In coronal plane, the distance between $S_1-S_0$ 수식 이미지 of PNS was $3.82{\pm}0.96$ 수식 이미지 mm, $S_2-S_0$ 수식 이미지 was $3.43{\pm}0.91$ 수식 이미지 mm, and $S_1S_2$ 수식 이미지 was $0.39{\pm}0.49$ 수식 이미지 mm. There were significant differences between these data (P<0.05). In transverse plane, it was estimated that PNS has no statistical postoperative stability in the same direction. In coronal plane, it was estimated that both A-point and PNS had no statistical postoperative stability (P<0.05).
Conclusion: Clinically, the operation plan needs to take into account of the maxillary relapse.
키워드
Le Fort I osteotomy;Three dimensional computed tomography;Maxillary relapse;Postoperative stability
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