Huang G J, Justus R, Kennedy D B, Kokich V G
Department of Orthodontics, School of Dentistry, University of Washington, Seattle 98195.
Angle Orthod. 1990 Spring;60(1):17-24; discussion 25-6. doi: 10.1043/0003-3219(1990)060<0017:SOAOTW>2.0.CO;2.
The records of 33 openbite patients treated with cribs were collected. The sample was divided into two groups with group one comprised of 26 growing patients and group two comprised of seven nongrowing patients. There was a significant increase in overbite for both groups during treatment. The nongrowing group also showed a significant increase in overbite during the posttreatment period. During the posttreatment time interval 17.4 percent of the growing sample and zero percent of the nongrowing sample exhibited relapse. However, all patients who achieved a positive overbite during treatment maintained a positive overbite posttreatment. These findings suggest that patients who achieve a positive overbite with crib therapy have a good chance of maintaining this correction after orthodontic treatment is completed. This statement appears to be true for both growing and nongrowing patients. The reason for this increased stability may be due to a modification of tongue position or posture.
收集了33例使用矫治器治疗的开牙合患者的记录。样本分为两组，第一组由26例生长发育期患者组成，第二组由7例非生长发育期患者组成。两组在治疗期间覆牙合均显著增加。非生长发育期组在治疗后阶段覆牙合也显著增加。在治疗后时间间隔内，生长发育期样本中有17.4%出现复发，非生长发育期样本中复发率为零。然而，所有在治疗期间获得正覆牙合的患者在治疗后均保持正覆牙合。这些发现表明，通过矫治器治疗获得正覆牙合的患者在正畸治疗完成后有很大机会维持这种矫正效果。这一说法对于生长发育期和非生长发育期患者似乎都是正确的。这种稳定性增加的原因可能是舌位或姿势的改变。
