Acceleration of canine movement by laser assisted flapless corticotomy [An innovative approach in clinical orthodontics

Abstract

Background: Corticotomy-assisted orthodontic treatment is done to induce a state of increased tissue turnover andtransient osteopenia, which is followed by a faster rate of orthodontic tooth movement. It considered as an adjuncttreatment option for orthodontic treatment of adults. The aim of this Study was to elucidate the effectiveness of anew surgical approach for acceleration of maxillary canine retraction in human with laser assisted flaplesscorticotomy and evaluate its effect on vitality of pulp and gingival sulcus depth.Materials and methods: the sample comprised of 15 Iraqi patients (9 females and 6 males; mean age 21.7), whowere required extraction for their maxillary first premolars followed by retraction of the canines as part of theirorthodontic treatment plan. The study was designed as a split-mouth study. Decortications were done in the secondstage of orthodontic treatment using Er:YAG laser to perform series of holes mesially and distally to the canine at theside with more space between the canine and second premolar without reflecting a surgical flap. The net caninemovements and molar anchorage loss were calculated after six weeks. Vitality test, radiographical assessment andgingival sulcus depth were investigated.Results and Conclusions: The canines on the laser corticotomy side showed statisticaly higher mean value ofretraction than their controls during six weeks period. Pulp vitality response and post surgery gingival sulcus depthshowed no significant difference between the pre-laser and post-laser surgery. Based on the result of our study,flapless laser assisted corticotomy can be considered for acceleration of orthodontic tooth movement in humans