摘要
目的:评价腭中缝骨皮质切开辅助快速扩弓法对15~25岁上颌横向宽度不足患者的治疗效果。方法:选取上颌骨横向宽度发育不足的15~25岁患者14例,采用腭中缝骨皮质切开辅助快速扩弓法,治疗前和扩弓3个月后行头颅侧位片及锥形束CT拍摄、测量,比较上颌骨基骨宽度变化、上颌牙弓宽度变化、上颌牙转矩变化等。结果:14例患者与治疗前相比均获得了明显的横向宽度扩大效果,表现为上颌基骨宽度和牙弓宽度的增加,第一磨牙间牙弓宽度治疗前(40.54±5.26)mm,治疗后(46.83±5.83)mm,根尖平面基骨宽度由(64.86±4.16)mm增加至(67.60±4.66)mm;而第一前磨牙间牙弓宽度治疗前(31.92±2.55)mm,治疗后(38.65±3.14)mm,根尖平面基骨宽度则由(43.33±3.70)mm增加至(45.78±4.57)mm,差异均有统计学意义(均P<0.05);患者上颌支抗牙转矩增大(P<0.05)。结论:腭中缝骨皮质切开辅助快速扩弓能获得有效的扩弓效果,是适合15~25岁上颌横向宽度不足患者的微创疗法。
Objective： To evaluate the application of midpalatal cortex osteotomy assisted rapid maxillary expansion for correction of maxillary transverse deficiency in young adults. Methods： Fourteen young adult patients with maxillary transverse deficiency were treated with midpalatal cortex osteotomy assisted rapid maxillary expansion. Lateral cephalogram and cone beam CT （CBCT） were taken before and 3 months after treatment. The width of basal bone, arch of maxilla and the torque of anchorage teeth were compared before and after treatment. Results： The width of dental arch of maxilla increased from （40.54 ± 5.26 ） mm before treatment to （46.83 ±5.83） mm after treatment （ P 〈 0.05 ） and the width of basal bone was increased from （64.86 ±4.16） mm to （67.60 ±4.66） mm （P 〈0.05） at the plane of the maxillary first molars. Accordingly, the width of dental arch of maxilla increased from （31.92 ± 2.55） mm to （38.65 ±3. 14） mm （P〈0.05） and the width of basal bone was increased from （43.33 ± 3.70） mm to （45.78 ± 4.57 ） mm （ P 〈 0. 05 ） at the plane of the first premolar. And the torque of maxillary anchorage teeth increased （ P 〈 0. 05 ）. Conclusion： Midpalatal cortex osteotomy assisted rapid maxillary expansion is an effective micro-invasive method in expansion of basal bone and arch of maxilla for young adult patients with maxillary transverse deficiency.
出处
《浙江大学学报（医学版）》
CAS
CSCD
北大核心
2017年第2期198-205,共8页
Journal of Zhejiang University(Medical Sciences)
基金
国家自然科学基金(81271955)
