CAJ | 학술논문

目的：比较4种镍钛丝（Damon、3M、Tomy、IMD）排齐安氏Ⅰ类错牙合畸形后牙弓形态改变的差异。方法使用上颌Typdont模型模拟安氏Ⅰ类错牙合畸形，17-27粘接Damon Q自锁托槽，在热水浴条件下分别用Damon、Tomy、3M、IMD 4种镍钛丝模拟非拔牙矫治牙列排齐过程，测量矫正前后牙弓长度、宽度、弧形长度以及牙列排齐时间。结果0.014 in镍钛矫正圆丝中，牙弓宽度改变量：Damon最大，其余详见后述；前段牙弓长度改变量：四者无统计学差异（P＞0.05）；牙弓弧形长度改变量：IMD、Damon、3M＞Tomy（P＜0.05）（IMD、Damon、3M 间差异无统计学意义）；排齐时间：Tomy＞3M＞Damon＞IMD（P＜0.05）。0.016 in镍钛矫正圆丝中，牙弓宽度改变量：Damon最大；前段牙弓长度改变量：IMD＞Damon、Tomy、3M（P＜0.05）（IMD、Damon、3M间差异无统计学意义）；牙弓弧形长度改变量：四者差异无统计学意义；排齐时间：Damon、3M、T＞IMD（P＜0.05）（Damon、3M间差异无统计学意义）。结论在牙列排齐阶段，以上4种镍钛丝扩弓均以改变牙弓宽度为主，其中运用 Damon 镍钛丝扩大前磨牙宽度效果最好。IMD 镍钛丝明显增加了牙弓长度，前牙可能有一定程度的唇倾。另外，模型排齐时间与矫治力负相关，IMD矫治时间最短，矫治力可能过大；Tomy镍钛丝矫治时间最长，矫治力较为柔和。
목적：비교4충얼태사（Damon、3M、Tomy、IMD）배제안씨Ⅰ류착아합기형후아궁형태개변적차이。방법사용상합Typdont모형모의안씨Ⅰ류착아합기형，17-27점접Damon Q자쇄탁조，재열수욕조건하분별용Damon、Tomy、3M、IMD 4충얼태사모의비발아교치아렬배제과정，측량교정전후아궁장도、관도、호형장도이급아렬배제시간。결과0.014 in얼태교정원사중，아궁관도개변량：Damon최대，기여상견후술；전단아궁장도개변량：사자무통계학차이（P＞0.05）；아궁호형장도개변량：IMD、Damon、3M＞Tomy（P＜0.05）（IMD、Damon、3M 간차이무통계학의의）；배제시간：Tomy＞3M＞Damon＞IMD（P＜0.05）。0.016 in얼태교정원사중，아궁관도개변량：Damon최대；전단아궁장도개변량：IMD＞Damon、Tomy、3M（P＜0.05）（IMD、Damon、3M간차이무통계학의의）；아궁호형장도개변량：사자차이무통계학의의；배제시간：Damon、3M、T＞IMD（P＜0.05）（Damon、3M간차이무통계학의의）。결론재아렬배제계단，이상4충얼태사확궁균이개변아궁관도위주，기중운용 Damon 얼태사확대전마아관도효과최호。IMD 얼태사명현증가료아궁장도，전아가능유일정정도적진경。령외，모형배제시간여교치력부상관，IMD교치시간최단，교치력가능과대；Tomy얼태사교치시간최장，교치력교위유화。
ObjectiveTo compare the posterior dental arch morphology with four different kinds of nickel-titanium orthodontic wires (Damon, 3M, Tomy, IMD) in the treatment of classⅠ malocclusion.Methods Simulating classⅠ malocclusion with maxillary Typdont model. Pasting Damon Q self-ligating bracket with 17-27 and using four kinds of Ni-Ti orthodontic wires (Damon, 3M, Tomy, IMD) to simulate non-extraction treatment under hot-water. Alignment time was recorded, also the differences of arch width, arch length and arc length were measured before and after the treatment.ResultsAmong the 0.014 inch round wires tested, arch width changes most in Damon; the change of anterior dental arch: no statistically significant differences (P>0.05); the change of arc length of dental arch: IMD, Damon, 3M>Tomy (P<0.05), no statistically significant differences among IMD, 3M and Damon; alignment time: Tomy>3M>Damon>IMD (P<0.05). Among the 0.016 inch round wires tested, arch width changes most in Damon; the change of anterior dental arch: IMD>Damon, Tomy, 3M (P<0.05), no statistically significant differences between 3M, IMD and Damon (P>0.05); the change of arc length of dental arch: no statistically significant differences; alignment time: Damon, 3M, Tomy>IMD (P<0.05) (no statistically significant differences between 3M and Damon).ConclusionIn aligning period, all four kinds of Ni-Ti orthodontic wires mainly expand the width of dental arch. Using Damon Ni-Ti orthodontic wires has the best effect of expanding premolars width. IMD Ni-Ti orthodontic wires significantly enlarge the length of dental arch which can lead to anterior teeth lip deformity. In addition, there is a negative correlation between alignment time of Typdont and orthodontic forces. MD has the lowest time costing, that is to say its orthodontic force probably performs more. Tomy performs weakest alignment speed, meaning milder orthodontic force.