Ahmad Behroozian, Anahita Pourahmad, Mahsa Zali, Amir Zandesh
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引用次数: 0
摘要
背景：生长修饰是治疗骨骼Cl II患者的一种策略。透明双块（CTB）是对传统双块（TTB）的改进，它由热塑性薄板而不是丙烯酸树脂和金属丝制成。本研究比较了清洁和ttb对牙齿的影响。方法：采用随机临床试验方法，选择60例生长期骨骼肌Cl II牙Cl II div 1错牙合患者，随机分为TTB组和CTB组。治疗前（T1）和植入矫治器后6个月（T2）分别拍摄头颅x线片和结石模型。数据分析采用独立t检验和配对t检验，显著性水平为0.05。结果：CTB组与TTB在T2时的IMPA （P1 ~ T2）及TTB组的U1-SN、U1-Pal量差异均有统计学意义。T1-T2比较显示TTB组的IMPA有显著变化(p)。结论：TTB组较CTB组表现出更多的下门牙前突。
Comparison of dental effects of traditional and clear twin block: A randomized clinical trial.
Background: Growth modification is a strategy for the treatment of skeletal Cl II patients. Clear twin block (CTB) is a modification of traditional twin block (TTB), which is made from thermoplastic sheets instead of acrylic resin and wire. This study compared the dental effects of the clear and TTBs.
Methods: In this randomized clinical trial, 60 growing skeletal Cl II patients with dental Cl II div 1 malocclusion were selected and randomly divided into two groups: TTB and CTB. Cephalometric radiography and stone models were taken before treatment (T1) and six months (T2) after appliance insertion. Data were analyzed using independent t-test and paired t-test at the 0.05 significance level.
Results: There was a significant difference between CTB and TTB in IMPA at T2 (P<0.05). Intragroup comparisons showed no significant change from T1 to T2 in the CTB group and for U1-SN and U1-Pal amounts in the TTB group. T1-T2 comparison showed a significant change in IMPA in the TTB group (P<0.05).
Conclusion: TTB showed more protrusion of lower incisors compared to CTB.
期刊介绍：
Journal of Dental Research Dental Clinics Dental Prospects (JODDD) is a Platinum* Open Access, peer-reviewed quarterly indexed journal that publishes articles of basic, clinical, and prospective nature in all areas of dentistry and oral health.
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