Effectiveness of Laceback Ligatures on Maxillary Canine Retraction

Abstract

Objective: To evaluate the effects of laceback ligatures on canine distalization during the leveling and aligning stage and to compare the effectiveness of laceback ligatures with that of superelastic NiTi closed coil springs. Materials and Methods: Fifteen subjects were included in this study. Fixed orthodontic treatment was planned with the extraction of first premolars to solve crowding in upper and/or lower arches. Stainless steel direct-bonding Roth brackets (0.022-inch) were used. For canine distalization superelastic NiTi closed coil springs generating 150 g of force were used on one side. Lacebacks made from 0.010-inch ligature wire were applied on the contralateral side. Dental and skeletal changes were evaluated from predistalization and postdistalization lateral cephalometric and submento vertical radiographs. A Wilcoxon test was applied to determine the differences between predistalization and postdistalization mean values and to determine the mean differences between the groups. Results: Upper incisor crowns moved posteriorly. Distal movement and tipping of the canines were significant for both groups. Likewise, mesial movement and tipping of the first molars were significant for both groups. Furthermore, distopalatinal rotation of the canines was significant in the coil group. Canine and molar movements were greater for the coil group than for the laceback group, and the differences were significant. These differences may be attributed to force characterization, as well as to arch wire size and material. Conclusion: The laceback ligatures proved to be effective for canine distalization. Less canine and molar movement was found for the laceback group, but more controlled movements were obtained for the sagittal, vertical, and transverse planes.

Salivary leptin levels in normal weight and overweight individuals and their correlation with orthodontic tooth movement

“…35,36 At all three time intervals of the study, salivary leptin concentrations were higher in overweight individuals when compared with normal weight individuals. These results were consistent with previous studies, which suggested that serum leptin levels were higher in overweight individuals as compared with normal weight individuals.…”

“…A distal force was applied to the maxillary right canine using active lacebacks, and the force was standardized by giving an equal number of turns (five turns) for each subject. 35,36 An upper alginate impression was made for all subjects before and 3 months after appliance placement, and models were poured using type IV dental stone (Orthokal, Kalabhai Company). The distance from the mesial contact point of the right maxillary canine to that of the second premolar was measured from the study models before and after force application using an electronic digital caliper, and the difference between the two measurements was recorded as the net distal movement of the right maxillary canine over 3 months.…”

Stress Distribution Evaluation of the Periodontal Ligament in the Maxillary Canine for Retraction by Different Alveolar Corticotomy Techniques: A Three-dimensional Finite Element Analysis

“…12,13 Studies have focused on how to produce a more bodily canine movement and examined whether new technologies can make any difference in decreasing the distalization of the canine and overall treatment time. [32][33][34][35][36] A previous study by Ammar et al 25 showed…”

Orthodontic tooth movement enhancing bony apposition in alveolar bony defect: a case report

“…It was shown that the laceback ligatures are effective for canine distalisation [8]. In a randomized controlled clinical trial investigating the effectiveness of the laceback ligatures showed no statistical or clinical difference in the anteroposterior or vertical position of the lower labial segment or in the relief of labial segment crowding and the use of laceback ligatures creates a statistically and clinically significant increase in the loss of posterior anchorage, through mesial movement of the lower first molars [9].…”