Comparison of canine retraction by in vivo method using four brands of elastomeric power chain

Abstract

Objective:To investigate the amount of space closure by movement of canines into the extraction spaces using four brands of elastomeric power chains (EPCs) by intraoral application with pre-adjusted appliance for 6 weeks.Materials and Methods:The sample size calculation was based on the studies of Boester and Johnston and also with repeated measures analysis of variance (ANOVA) continuous data for force degradation, standard deviation of 24.9 g, and also from a pilot study, which totaled to around 17 patients with a mean age of 20 ± 2 years and receiving fixed orthodontic treatment that required retraction of canines into the premolar extraction spaces in all four dental arch quadrants. Four brands of EPCs, namely the Ormco, 3M Unitek, Rocky Mountain, and Highland, which were closed-link with five loops delivering less than or equal to 250 g were used. The rates of canine retraction were measured between the attachment points on the canine bracket hook and first molar hook using a Mitutoyo Digital Vernier Caliper at the time of first application, after 3 weeks of use, and at the end of 6 weeks of use, and were subjected to statistical calculations.Results:The distances recorded from canine retraction were similar with slight differences noticed in the four brands of EPCs. However, no statistically significant difference was observed in relation to the EPCs.Conclusion:Although all brands of the EPCs produced space closure of canines, it was observed that not much of a significant difference existed among the products tested.

Application of Elastomeric Chains in Orthodontics: Past, Present and Future

“…Kanuru et al (19) (2014) investigated the amount of space closure by movement of canines into the extraction spaces using four brands of elastomeric chains for 6 weeks. They said that although all brands of the elastomeric chains produced space closure of canines, it was observed that not much of a significant difference existed among the products tested.…”

Accelerated tooth movement with piezocision and its periodontal-transversal effects in patients with Class II malocclusion

“…Their advantages are no patient cooperation required, low cost, smooth surface, and their irritation-free nature. 10,11 The objectives of this research were to evaluate the effectiveness of piezocision-assisted canine distalization using three-dimensional (3D) measurements and to assess the transversal changes, postdistalization gingival status, and mobility scores.…”

Stiffness characteristics of splints for fixation of traumatized teeth

“…In this study, a recently introduced flexible material was included-the power chain, made of rubber, used in orthodontics for traction and which may be an interesting alternative for splinting (26). It has also been used in traumatology in the treatment of fractures of the jaws (34).…”

“…The splint must hold the tooth in place and allow it to move slightly and not be too stiff for optimal healing. Recently, more flexible materials have been introduced in orthodontics , and some of these may even be suitable for splinting of teeth. Moreover, the splint must be easy to make, be affordable for the patient and dentist, and be esthetically pleasing.…”

“…In the literature, there are mainly descriptive studies on how to make one type of splint. Some studies compare different traditional splints in a functional manner (14,15,18,19,21,23,24,26,27). Although the most important factor for healing seems to be to enable some mobility of the tooth, there is also a need to evaluate and compare different splints with regard to easiness of application, appearance, and cost.…”