摘要
目的:探讨生理性支抗(PASS)技术在牙性前突拔牙矫治中的磨牙支抗控制效果。方法:选取因牙齿前突需要拔牙矫治的恒牙期安氏Ⅰ类和Ⅱ类患者共76例(年龄11~41岁),拔除4颗前磨牙,上颌强或中支抗设计。分别使用生理性支抗矫治器(PASS)组和自锁托槽矫治器(自锁组)进行拔牙矫治,每组各38例,其中自锁组有17例使用种植钉加强支抗。收集两组患者治疗前后头颅侧位片,测量与磨牙支抗和前牙内收相关的骨性、牙性和牙合平面指标(共23项)。结果:治疗后,所有患者前牙区主要骨性、牙性指标均有改善(P<0.05)。PASS组U1-NA距、U1-AP距减小量大于自锁组;PASS组U6-PP角度增加了(0.57±6.51°),自锁组减少了(-3.65±7.46°);PASS组U6c-PNS距增加量小于自锁组;PASS组OP-SN、OP-FH角度增加量大于自锁组(P均<0.05);两组其余各测量指标变化差异无统计学意义(P>0.05)。结论:PASS技术在不采用额外支抗增强措施的情况下能够实现对上颌磨牙的强支抗控制效果。
Aim:To evaluate the effect of molar anchorage control in extraction cases with chief complain of protrusive teeth using physiologic anchorage control.Methods:A total of 76 patients(aged 11-41 years)with ClassⅠorⅡpermanent teeth that require extraction and correction due to protrusion of teeth were selected.Four premolars were extracted,and the upper jaw was designed with strong or middle anchorage.Patients were treated with physiologic anchorage technique(PASS group)or self-ligation technique(Damon group)respectively,38 cases in each group.In Damon group,17 cases used micro-implant for anchorage reinforcement.Pre-treatment and post-treatment cephalograms were collected for measurement and analysis using a blinded method.Twenty-three skeletal,dental and soft tissue items which related to molar anchorage control and anterior teeth retraction were measured.Results:Significant improvements were observed in skeletal and dental measurements after treatment in both groups(P<0.05).Inter-group comparison showed that the decrease of upper incisor protrusion U1-NA and U1-AP was larger in PASS group than that in Damon group;the mesio-distal inclination of the upper first molar(∠U6-PP)increased[(0.57±6.51)°]in PASS group(distal tipping)while decreased[(-3.65±7.46)°]in Damon group(mesial tipping);the sagittal change of upper first molar U6c-PNS was smaller in PASS group than that in Damon group;the increase of∠OP-SN and∠OP-FH was significantly larger in PASS group than that in Damon group(all P<0.05).Conclusions:Maximum anchorage control could be achieved with PASS technique without additional anchorage devices in premolar extraction cases of dental protrusion.
作者
袁建桥
陈斯
牛龙龙
张月兰
苏红
陈贵
张馨
崔淑霞
YUAN Jianqiao;CHEN Si;NIU Longlong;ZHANG Yuelan;SU Hong;CHEN Gui;ZHANG Xin;CUI Shuxia(Department of Orthodontics,the First Affiliated Hospital,Zhengzhou University,Zhengzhou 450052;Department of Orthodontics,Peking University School and Hospital of Stomatology,National Center of Stomatology,National Clinical Research Center for Oral Diseases,National Engineering Research Center for Oral Biomaterials and Digital Medical Devices,Beijing 100081;Department of Stomatology,Handan City Eye Hospital(the Third Hospital of Handan),Handan,Hebei 056001)
出处
《郑州大学学报（医学版）》
CAS
北大核心
2023年第4期516-520,共5页
Journal of Zhengzhou University(Medical Sciences)
基金
国家自然科学基金项目(82001080)
河南省医学科技攻关计划省部共建项目(SB201901002,SBGJ202102170)
宁夏回族自治区重点研发计划项目(2022BEG02031)。
关键词
生理性支抗
前牙内收
牙齿矫治
physiologic anchorage
anterior teeth retraction
dental correction
