A comparative evaluation of canine retraction using ceramic bracket and ceramic bracket with metal slot with conventional preadjusted edgewise appliance bracket systems: A clinical study

Abstract

Aims and Objectives:The introduction of ceramic brackets was a much-heralded development in the field of orthodontics. However, the increased frictional resistance with these brackets led to the development of ceramic brackets with metal slots, which claimed to combine the esthetics of ceramic brackets with the low frictional resistance of metal brackets. Hence, this study was undertaken to evaluate the rate of canine retraction and the amount of anchor loss while using ceramic brackets and ceramic brackets with metal slots and with conventional preadjusted edgewise appliance (PEA) metal brackets.Materials and Methods:The patient sample consists of 12 patients. Six patients received ceramic brackets on one canine and conventional PEA metal brackets on the opposite canine within the same arch. The other six patients received ceramic brackets with metal slot on one canine and conventional PEA metal brackets on the opposite canine within the same arch. Unpaired t-test was used to analyze the data using SPSS version 20 (3M Unitek, Bangalore, Karnataka, India). The rate of retraction was calculated for individual canine retraction after initial leveling and aligning. Anchor loss was also calculated using the pterygoid vertical to the mesiobuccal cusp of the upper first molar on the lateral cephalograms.Results:The result of this study showed that the difference in the rate of retraction between ceramic brackets with metal slot and conventional PEA metal brackets and ceramic bracket while clinically significant was not statistically significant. The difference in the amount of loss of anchorage of both the groups was not statistically significant.Conclusions:Incorporation of the metal slot in ceramic brackets has reduced frictional resistance for more efficient and desired tooth movement. Ceramic brackets with metal slot generate lower frictional forces than ceramic brackets but higher than conventional PEA metal brackets.

Comparative in vitro analysis of the sliding resistance of a modern 3D-printed polymer bracket in combination with different archwire types

“…For this reason, there have been many attempts to reduce these high force loss levels of ceramic brackets in the past, e.g. by the incorporation of a metal, silica, glazed or zirconia-based slot [20][21][22][23][24]. The good sliding properties of polymer materials have also been used to coat guiding archwires in order to reduce the sliding resistance [25,26].…”

Digital Workflow for Indirect Bonding with 2D Lingual Brackets: A Case Report and Procedure Description

“…As the patient wanted to avoid conventional vestibular orthodontic treatment, a lingual orthodontic appliance was chosen. Other alternatives to conventional visible metallic attachments would have been orthodontic treatment with ceramic brackets or aligners that are both effective to obtain tooth movement [19, 20]. The patient, however, wanted to avoid ceramic brackets because of the possibility of adverse staining midtreatment and refused aligners so as to avoid treatment with removable appliances.…”