摘要
目的 探讨在骨性Ⅲ类错（牙合）正畸-正颌联合治疗的术前正畸中改良骨皮质切开术对治疗时间及矢状方向上牙齿移动模式的影响,以期为临床实践提供依据.方法 选择行正畸-正颌联合治疗的骨性Ⅲ类错（牙合）患者20例,其中10例于牙列排齐后行骨皮质切开术,并植入植骨材料（改良骨皮质切开术组）,10例行常规正畸-正颌联合治疗（对照组）.取治疗前（T1）、牙列排齐时（T2）和关闭间隙时（T3）3个时间点,比较两组排齐时间（T2-T1）、关闭间隙时间（T3-T2）和术前正畸排齐和关闭间隙总时间（T3-T1）的差异；对T1和T3时间点的上颌数字模型进行三维测量,分析术前正畸阶段上颌中切牙和第一磨牙矢状方向上的移动模式.结果 在未行骨皮质切开术的排齐整平阶段,两组排齐时间差异无统计学意义（P＞0.05）.行骨皮质切开术后,改良骨皮质切开术组关闭间隙时间[（5.4±1.5）个月]比对照组[（14.5±4.0）个月]少（9.1±4.1）个月,两组差异有统计学意义（P＜0.01）.改良骨皮质切开术组术前正畸排齐和关闭间隙总时间[（12.5±2.5）个月]比对照组[（18.8±4.2）个月]少（6.3±4.8）个月,两组差异有统计学意义（P＜0.01）.术前正畸阶段改良骨皮质切开术组上颌中切牙远中移动（2.89±1.48） mm,对照组远中移动（3.10±0.95） mm,两组差异无统计学意义（P＞0.05）.改良骨皮质切开术组上颌磨牙近中移动（2.17±1.13） mm,对照组近中移动（2.45 ±1.04） mm,两组差异无统计学意义（P＞0.05）.结论 改良骨皮质切开术能明显缩短正畸-正颌联合治疗的术前正畸时间,并且在术前正畸过程中对前后牙矢状方向上的移动模式无影响.
Objective To evaluate the treatment time and the anterior and posterior teeth movement pattern as closing extraction space for the Class Ⅲ surgical patients facilitated by accelerated osteogenic orthodontic treatment.Methods There were 10 skeletal Class Ⅲ patients in accelerated osteogenic orthodontic group （AOO） and 10 patients in control group.Upper first premolars were extracted in all patients.After leveling and alignment（T2）,corticotomy was performed in the area of maxillary anterior teeth to accelerate space closing.Study models of upper dentition were taken before orthodontic treatment（T1） and after space closing（T3）.All the casts were laser scanned,and the distances of the movement of incisors and molars were digitally measured.The distances of tooth movement in two groups were recorded and analyzed.Results The alignment time between two groups was not statistically significant.The treatment time in AOO group from T2 to T3 was less than that in the control group （less than 9.1 ± 4.1 months）.The treatment time in AOO group from T1 to T3 was less than that in the control group （less than 6.3 ± 4.8 months）,and the differences were significant（P 〈 0.01）.Average distances of upper incisor movement （D1） in AOO group and control group were （2.89 1.48） and （3.10 ±0.95） mm,respectively.Average distances of upper first molar movement（D2） in AOO group and control group were （2.17 ± 1.13） and （2.45 ± 1.04） mm,respectively.No statistically significant difference was found between the two groups （P 〉 0.05）.Conclusions Accelerated osteogenic orthodontic treatment could accelerate space closing in Class Ⅲ surgical patients and shorten preoperative orthodontic time.There were no influence on the movement pattern of anterior aud posterior teeth during pre-surgical orthodontic treatment.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2013年第10期596-599,共4页
Chinese Journal of Stomatology
基金
北京市科学技术委员会首都临床特色应用研究项目（Z12110700100000）
关键词
错猞
安氏Ⅲ类
牙模型
骨皮质切开术
Malocclusion, Angle Class Ⅲ
Dental models
Corticotomy
