Comparison of self-ligating Damon3 and conventional MBT brackets regarding alignment efficiency and pain experience: A randomized clinical trial

Abstract

Background. Self-ligating brackets might be more efficient than conventional appliance systems during the initial alignment stage of orthodontic treatment due to reduced frictional resistance. This study aimed to compare the alignment efficiency and pain experience of Damon3 self-ligating and MBT pre-adjusted brackets in the initial alignment stage. Methods. In this randomized clinical trial, 30 patients aged 14‒20 years, who needed non-extraction treatment in both maxillary and mandibular arches, were randomly assigned to two groups; 15 patients were treated with MBT pre-adjusted brackets, and 15 patients received Damon3 self-ligating brackets, both with 0.022-in slots. Alginate impressions were taken at the start of treatment (T0) and four monthly visits (T1, T2, T3, and T4). Little’s irregularity index (LII) was used to assess the tooth displacements. The patients rated their pain experience immediately after the insertion of the archwire, 4 hours, 24 hours, 3 days, 7 days, and at each monthly visit using a visual analog scale (VAS). Results. The rate of upper dental alignment between T0 and T4 was significantly higher with the Damon3 compared to MBT brackets (P=0.015). Although significantly more changes in the lower LII scores were observed during the first three months with the Damon3 system, the rate of improvement in the irregularity of lower teeth over the 4-month period was not significantly different between the two groups (P=0.50). The patients’ pain experience was not significantly different between the bracket groups (P=0.29). Conclusion. During the four-month alignment stage, significantly more improvement in the upper dental irregularity was observed with self-ligating compared to conventional brackets. The bracket type had no effect on pain experience during the alignment stage.

Evaluation of Patient-Centered Outcomes Associated With the Acceleration of Upper Incisor Decrowding Using Self-Ligating Brackets With or Without Piezocision in Comparison With Traditional Brackets: A Three-Arm Randomized Controlled Trial

“…The VAS was used in this study because it is considered a simple, applicable, and valid tool for assessing pain and other patient-centered outcomes [28][29][30]. It is also one of the most popular scales that has been used in a large number of previous studies [18,23,27]. No measurement was taken before 24 hours of the beginning of treatment to avoid the local anesthesia effect in the SLBs+P group.…”

“…The sample size was calculated using Minitab® Version 18 (Minitab Inc., State College, Pennsylvania, USA). It was assumed that the least significant difference in the pain level was 10 mm on the visual analog scale (VAS) with a standard deviation of 9.4 mm, according to Jahanbin et al's study [27]. Using an ANOVA test with a power of 85% and a significance level of 5%, 21 participants were needed in each group.…”

A pilot study analyzing the influence of the material and the size of the orthodontic archwire on the level of pain and anxiety in adult patients in treatment with brackets: A prospective triple-blind randomized clinical trial

“…Previous studies have evaluated the influence of the bracket system used (conventional brackets, self-ligating brackets, etc.) on the pain and anxiety of orthodontic patients, with contradictory results observed between different authors ( 7 , 8 ).…”

Assessment of Dentoalveolar Changes Following Leveling and Alignment of Severely Crowded Upper Anterior Teeth Using Self-Ligating Brackets Alone or With Flapless Piezocision Compared to Traditional Brackets: A Randomized Controlled Clinical Trial

“…The orthodontic movements are affected by friction forces between the orthodontic wire and the bracket slot [1,14,15]. The friction force values differ according to the physical characteristics and dimensions of the brackets and wires used and the binding type [13,14,16,17]. Concerning the surgical methods, the orthodontic movement acceleration results mainly from the induction of the regional acceleratory phenomenon (RAP) [18][19][20][21].…”