Soares Ueno Eloisa Peixoto, de Carvalho Teresa Cristina Alvez da Silva Gonzalez, Kanashiro Lylian Kazumi, Ursi Weber, Chilvarquer Israel, Neto José Rino, de Paiva João Batista
Angle Orthod. 2025 Jan 1;95(1):3-11. doi: 10.2319/030624-179.1.
To compare the accuracy and chair time of self-ligating brackets using direct bonding, traditional indirect bonding (IB), and computer-aided design/computer-aided manufacturing (CAD/CAM) IB techniques after orthodontic leveling and alignment.
Forty-five patients were randomly assigned to three bonding groups (G1 [n = 15], G2 [n = 15], and G3 [n = 15]). Evaluation after the alignment and leveling phases used two parameters of the objective grading system of the American Board of Orthodontics for root parallelism and posterior marginal ridges, assessed using panoramic radiographies (PR I and PR II), a digital model, and a plaster model. Blinding was only applied for outcome assessment. No serious harm was observed except for gingivitis associated with plaque accumulation.
Although G3 showed better numerical results, they were not statistically significant in the radiographic or model evaluations (P > .001). Mean chair time was significantly shorter in G3 (1.1 ± 11.8 min) vs. G1 (56.7 ± 7.3 min) and G2 (52.8 ± 8.3 min; P < .001).
The CAD/CAM IB system for self-ligating brackets was as effective as conventional methods, with a shorter chair time.
比较在正畸排齐整平后，使用直接粘结、传统间接粘结（IB）以及计算机辅助设计/计算机辅助制造（CAD/CAM）间接粘结技术的自锁托槽的准确性和椅旁操作时间。
45例患者被随机分为三个粘结组（G1[n = 15]、G2[n = 15]和G3[n = 15]）。在排齐整平阶段结束后，使用美国正畸委员会客观分级系统的两个参数来评估牙根平行度和后缘嵴，通过全景X线片（PR I和PR II）、数字模型和石膏模型进行评估。仅在结果评估时采用盲法。除了与菌斑堆积相关的牙龈炎外，未观察到严重危害。
尽管G3组在数值上显示出更好的结果，但在影像学或模型评估中差异无统计学意义（P > 0.001）。G3组的平均椅旁操作时间（1.1 ± 11.8分钟）明显短于G1组（56.7 ± 7.3分钟）和G2组（52.8 ± 8.3分钟；P < 0.001）。
自锁托槽的CAD/CAM间接粘结系统与传统方法效果相当，但椅旁操作时间更短。
