Orthodontic Forces Interrupt Root Formation in Immature Teeth: Myth or Fact? A Pilot Study.

IF 0.8 Q4 DENTISTRY, ORAL SURGERY & MEDICINE
Teena Dodeja, Ahmed A Alsulaiman, Leslie A Will, Marianne Saade, Melih Motro
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引用次数: 0

Abstract

Objective: To assess the effects of rapid maxillary expansion (RME) and orthodontic treatment with fixed appliances on the developing roots of anchor teeth compared with completely formed roots.

Methods: Pre- and post-treatment cone-beam computed tomography (CBCT) scans of 19 patients (mean pre-treatment age 10.9±1.3, mean post-treatment age 13.66±1.29) with incompletely formed roots who had undergone RME and orthodontic treatment with fixed appliances were selected. In addition, 15 CBCT scans of age- and sex-matched untreated controls (mean age 13.69±1.08) with completely formed roots of the same teeth were obtained. Pre- and post-treatment CBCT records of the experimental group were segmented and reconstructed to obtain linear and volumetric measurements of the roots for comparison with the control group. Changes in the root dimensions were analyzed using the paired t-test; Independent Student's t-test was used for comparisons between the groups.

Results: All premolars in the experimental group showed a statistically significant increase in root length and volume post-treatment (p<0.05), with the greatest increase seen in the second premolar. The distobuccal and palatal root lengths of the molars decreased significantly after treatment in the experimental group. The comparison of post-treatment root dimensions between the experimental and untreated control groups showed no significant difference.

Conclusion: The teeth with developing roots attain normal root length after RME and orthodontic treatment with fixed appliances, with no significant differences in root length and volume compared with teeth with completely formed roots.

正畸力中断未成熟牙齿牙根形成:神话还是事实?试点研究。
目的:比较上颌快速扩张(RME)和固定矫治器对锚牙根发育的影响。方法:选择19例牙根不完全形成患者(治疗前平均年龄10.9±1.3岁,治疗后平均年龄13.66±1.29岁),均行RME +固定矫治器正畸治疗。此外,还获得了年龄和性别匹配的未治疗对照组(平均年龄13.69±1.08)的15个CBCT扫描,这些对照组的牙根完全形成。对实验组治疗前后的CBCT记录进行分割和重建,以获得根的线性和体积测量值,并与对照组进行比较。根维度的变化采用配对t检验进行分析;组间比较采用独立学生t检验。结果:实验组前磨牙治疗后牙根长度和体积均有统计学意义的增加(p)。结论:牙根发育的牙齿经过RME和固定矫治器正畸治疗后牙根长度恢复正常,与牙根完全形成的牙齿相比,牙根长度和体积无显著差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Turkish Journal of Orthodontics
Turkish Journal of Orthodontics Dentistry-Orthodontics
CiteScore
2.10
自引率
9.10%
发文量
34
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