广州医科大学学报
廣州醫科大學學報
엄주의과대학학보
Academic Journal of Guangzhou Medical College
2014年
6期
14-20
,共7页
罗启贤%刘长庚%欧阳舢%程自力%莫晖
囉啟賢%劉長庚%歐暘舢%程自力%莫暉
라계현%류장경%구양산%정자력%막휘
牙周膜牵张%牙槽骨牵张%尖牙%牙移动%牵张成骨
牙週膜牽張%牙槽骨牽張%尖牙%牙移動%牽張成骨
아주막견장%아조골견장%첨아%아이동%견장성골
periodontal ligament distraction%dentoalveolar distraction%canine%tooth movement%distraction osteogenesis
目的::比较牙周膜牵张( PDLD)和牙槽骨牵张( DAD)在加快正畸牙移动方面的治疗效果。方法:比格犬6只,下颌两侧随机分组进行自身配对实验,一侧建立PDLD模型,另一侧建立DAD模型,双侧同时牵张2周。在术前、加力1、2周时测量移动牙及支抗牙的位置,行X线检查。结果:PDLD移动牙2周内移动(3.90±0.56)mm,在第1、2周分别移动(1.74±0.30)mm、(2.16±0.27)mm。 DAD移动牙2周内移动(4.23±0.59)mm,在第1、2周分别移动(2.14±0.22)mm、(2.09±0.38)mm。 PDLD支抗牙移动距离为(0.66±0.09)mm;DAD支抗牙移动距离为(0.45±0.08)mm。 PDLD移动牙第1、2周的移动距离差异有统计学意义(P<0.01);DAD移动牙第1、2周的移动距离差异没有统计学意义(P>0.05)。 PDLD和DAD移动牙在第一、二周及总移动距离差异有统计学意义( P<0.01)。 PDLD和DAD支抗牙移动距离差异有统计学意义( P<0.01)。 X线示PDLD组牙齿以倾斜移动为主;DAD组牙齿以整体移动为主,未发现牙根吸收。病理示PDLD和DAD牙周膜及牙髓组织未发生可逆性改变,牵张处牙槽骨有新骨生成。结论:PDLD和DAD两种方法均能实现牙齿快速远中移动。
目的::比較牙週膜牽張( PDLD)和牙槽骨牽張( DAD)在加快正畸牙移動方麵的治療效果。方法:比格犬6隻,下頜兩側隨機分組進行自身配對實驗,一側建立PDLD模型,另一側建立DAD模型,雙側同時牽張2週。在術前、加力1、2週時測量移動牙及支抗牙的位置,行X線檢查。結果:PDLD移動牙2週內移動(3.90±0.56)mm,在第1、2週分彆移動(1.74±0.30)mm、(2.16±0.27)mm。 DAD移動牙2週內移動(4.23±0.59)mm,在第1、2週分彆移動(2.14±0.22)mm、(2.09±0.38)mm。 PDLD支抗牙移動距離為(0.66±0.09)mm;DAD支抗牙移動距離為(0.45±0.08)mm。 PDLD移動牙第1、2週的移動距離差異有統計學意義(P<0.01);DAD移動牙第1、2週的移動距離差異沒有統計學意義(P>0.05)。 PDLD和DAD移動牙在第一、二週及總移動距離差異有統計學意義( P<0.01)。 PDLD和DAD支抗牙移動距離差異有統計學意義( P<0.01)。 X線示PDLD組牙齒以傾斜移動為主;DAD組牙齒以整體移動為主,未髮現牙根吸收。病理示PDLD和DAD牙週膜及牙髓組織未髮生可逆性改變,牽張處牙槽骨有新骨生成。結論:PDLD和DAD兩種方法均能實現牙齒快速遠中移動。
목적::비교아주막견장( PDLD)화아조골견장( DAD)재가쾌정기아이동방면적치료효과。방법:비격견6지,하합량측수궤분조진행자신배대실험,일측건립PDLD모형,령일측건립DAD모형,쌍측동시견장2주。재술전、가력1、2주시측량이동아급지항아적위치,행X선검사。결과:PDLD이동아2주내이동(3.90±0.56)mm,재제1、2주분별이동(1.74±0.30)mm、(2.16±0.27)mm。 DAD이동아2주내이동(4.23±0.59)mm,재제1、2주분별이동(2.14±0.22)mm、(2.09±0.38)mm。 PDLD지항아이동거리위(0.66±0.09)mm;DAD지항아이동거리위(0.45±0.08)mm。 PDLD이동아제1、2주적이동거리차이유통계학의의(P<0.01);DAD이동아제1、2주적이동거리차이몰유통계학의의(P>0.05)。 PDLD화DAD이동아재제일、이주급총이동거리차이유통계학의의( P<0.01)。 PDLD화DAD지항아이동거리차이유통계학의의( P<0.01)。 X선시PDLD조아치이경사이동위주;DAD조아치이정체이동위주,미발현아근흡수。병리시PDLD화DAD아주막급아수조직미발생가역성개변,견장처아조골유신골생성。결론:PDLD화DAD량충방법균능실현아치쾌속원중이동。
Objective:To compare the efficacy of periodontal ligament distraction ( PDLD ) versus Dentoalveolar distraction ( DAD) for rapid orthodontic teeth movement. Methods:6 beagles were included in the study. Then, both sides of the mandibles were randomized for self ̄paired trial, one for PDLD model, and the other for DAD model. And the distraction of both sides lasted for 2 weeks. The locations of moved teeth and teeth with anchorage were measured for X ̄ray examination at baseline and at week 1 and 2 after the distraction. Results:The movement of moved teeth in the PDLD group was(1.74±0.30)mm in the first week,(2.16±0.27) mm in the second week, and (3.90±0.56)mm in total. The movement of teeth with anchorage in the DAD group was (2.14±0.22)mm in the first week, (2.09±0.38)mm in the second week, and (4.23±0.59)mm in total. The movement of teeth with anchorage in the PDLD group and DAD group at week 1 and 2 were (0.66±0.09)mm and (0.45±0.08)mm, respectively. There was statistically significant difference in moving distance of PDLD moved teeth between week 1 and week 2 ( P<0.01) . The differences in week 1, 2 and total moving distance of moved teeth between PDLD and DAD groups reached the level of statistical significance ( P<0. 01 ) . There was statistically significant difference in moving distance of teeth with anchorage between PDLD and DAD groups ( P<0.01) . X ̄ray showed that the teeth tended to tilt movement in PDLD group and bodily movement in DAD group without root absorption. Pathological study confirmed that there was no irreversible change in PDLD and DAD. And osteogenesis was found in DAD. Conclusion:Rapid distal teeth movement can be performed by PDLD and DAD methods.