Hyejin Kwon, Sun-Hyung Park, Hoi-In Jung, Woo-Chan Hwang, Yoon Jeong Choi, Chooryung Chung, Kyung-Ho Kim
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OCA and BF were measured using the Dental Prescale System.</p><p><strong>Results: </strong>The OCA and BF decreased gradually before surgery and increased after surgery on both sides. The OCA and BF were significantly greater on the deviated side than on the non-deviated side before surgery, and there was no difference after surgery. According to the linear mixed-effect model, only the changes in the mandibular plane angle had a significant effect on BF (<i>p</i> < 0.05).</p><p><strong>Conclusions: </strong>There was a difference in the amount of the OCA and BF between the deviated and non-deviated sides before surgery. 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引用次数: 0
摘要
研究目的本研究的目的是比较下颌前突不对称患者在正颌手术前后偏斜侧和非偏斜侧的咬合接触面积（OCA）和咬合力（BF）随时间的变化，并研究与两侧OCA和BF变化相关的因素：样本包括 67 名接受双颌正颚手术的面部不对称患者（33 名男性和 34 名女性；年龄范围为 15-36 岁）。分别在术前正畸治疗前、术前 1 个月内以及术后 1 个月、3 个月、6 个月、1 年和 2 年内测量 OCA 和 BF。使用牙科预刻度系统测量 OCA 和 BF：结果：两侧的 OCA 和 BF 在术前逐渐降低，术后逐渐升高。术前偏斜侧的 OCA 和 BF 明显大于非偏斜侧，术后无差异。根据线性混合效应模型，只有下颌平面角度的变化对BF有显著影响（P < 0.05）：结论：术前偏斜侧和非偏斜侧的OCA和BF量存在差异。下颌平面角度的变化会影响观察期间的变化，尤其是非偏斜侧的变化。
Comparison of the bite force and occlusal contact area of the deviated and non-deviated sides after intraoral vertical ramus osteotomy in skeletal Class III patients with mandibular asymmetry: Two-year follow-up.
Objective: The objectives of this study were to compare the time-dependent changes in occlusal contact area (OCA) and bite force (BF) of the deviated and non-deviated sides in mandibular prognathic patients with mandibular asymmetry before and after orthognathic surgery and investigate the factors associated with the changes in OCA and BF on each side.
Methods: The sample consisted of 67 patients (33 men and 34 women; age range 15-36 years) with facial asymmetry who underwent 2-jaw orthognathic surgery. OCA and BF were taken before presurgical orthodontic treatment, within 1 month before surgery, and 1 month, 3 months, 6 months, 1 year, and 2 years after surgery. OCA and BF were measured using the Dental Prescale System.
Results: The OCA and BF decreased gradually before surgery and increased after surgery on both sides. The OCA and BF were significantly greater on the deviated side than on the non-deviated side before surgery, and there was no difference after surgery. According to the linear mixed-effect model, only the changes in the mandibular plane angle had a significant effect on BF (p < 0.05).
Conclusions: There was a difference in the amount of the OCA and BF between the deviated and non-deviated sides before surgery. The change in mandibular plane angle affects the change, especially on the non-deviated side, during the observation period.
期刊介绍：
The Korean Journal of Orthodontics (KJO) is an international, open access, peer reviewed journal published in January, March, May, July, September, and November each year. It was first launched in 1970 and, as the official scientific publication of Korean Association of Orthodontists, KJO aims to publish high quality clinical and scientific original research papers in all areas related to orthodontics and dentofacial orthopedics. Specifically, its interest focuses on evidence-based investigations of contemporary diagnostic procedures and treatment techniques, expanding to significant clinical reports of diverse treatment approaches.
The scope of KJO covers all areas of orthodontics and dentofacial orthopedics including successful diagnostic procedures and treatment planning, growth and development of the face and its clinical implications, appliance designs, biomechanics, TMJ disorders and adult treatment. Specifically, its latest interest focuses on skeletal anchorage devices, orthodontic appliance and biomaterials, 3 dimensional imaging techniques utilized for dentofacial diagnosis and treatment planning, and orthognathic surgery to correct skeletal disharmony in association of orthodontic treatment.
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