Angle Orthod. 2021 Jan 1;91(1):74-80. doi: 10.2319/012920-59.1.
To compare treatment duration and quality between standard vs computer-aided design/computer-aided manufacturing (CAD/CAM) customized self-ligating systems using indirect bonding with both.
This comparative trial included 24 patients: 12 treated with a CAD/CAM custom indirect bonding self-ligating system (CAD/CAM) and 12 others treated with an indirect bonding self-ligating standard system (I-STD). For each group, overall orthodontic treatment (OT) time was calculated and included the time needed to place each arch as well as the duration of the alignment and fine-tuning phases. The quality of the final result was analyzed using the American Board of Orthodontics Cast-Radiograph Evaluation. Patient-reported outcome measures (PROMs) were also evaluated.
Patient characteristics were similar between the 2 groups except for age, which was slightly lower in the I-SDT group. Overall OT time was increased by 26% in the I-STD group compared with the CAD/CAM group (497 ± 40 days vs 393 ± 55 days, P = 0.0002) due to a shorter fine-tuning phase in the latter group (P<0.01). No difference was found between the groups for alignment phase. Quality of the final result was similar (I-STD, 25.7 ± 6.1; CAD/CAM, 21.6 ± 6.3) among the groups. Finally, no difference was found in the PROMs variables.
Despite a 26% longer OT time when compared with the CAD/CAM customized bracket system, the indirect bonding self-ligating bracket system demonstrated the same quality of treatment. PROMs demonstrated a high level of acceptance and satisfaction for both techniques.
比较使用间接粘接技术并分别采用标准自锁托槽系统和 CAD/CAM 定制自锁托槽系统的治疗时长和治疗质量。
本对比试验纳入了 24 名患者:12 名患者接受 CAD/CAM 定制间接粘接自锁托槽系统(CAD/CAM)治疗,12 名患者接受间接粘接标准自锁托槽系统(I-STD)治疗。对于每组患者,计算了整体正畸治疗(OT)时间,其中包括放置每个弓丝所需的时间以及排齐和精细调整阶段的持续时间。使用美国正畸协会牙模 X 光评估标准分析最终结果的质量。还评估了患者报告的结果测量(PROMs)。
除了年龄外,两组患者的特征相似,I-STD 组的年龄稍小。与 CAD/CAM 组相比,I-STD 组的整体 OT 时间增加了 26%(497±40 天 vs 393±55 天,P=0.0002),这是由于后者组的精细调整阶段更短(P<0.01)。两组在排齐阶段没有差异。最终结果的质量相似(I-STD 组为 25.7±6.1,CAD/CAM 组为 21.6±6.3)。最后,两组的 PROMs 变量没有差异。
尽管与 CAD/CAM 定制托槽系统相比,OT 时间延长了 26%,但间接粘接自锁托槽系统的治疗质量相同。PROMs 表明两种技术都具有很高的接受度和满意度。