Indirect orthodontic bonding with drop-shaped hot glue tray: a simple and cost-effective technique

Carolina Ribeiro Starling,Marcos Alan Vieira Bittencourt,Lílian Siqueira De Lima

doi:10.14393/bj-v37n0a2021-59299

Carolina Ribeiro Starling, Marcos Alan Vieira Bittencourt + Show 1 more

Open Access

https://doi.org/10.14393/bj-v37n0a2021-59299

Copy DOI

Abstract

Despite being associated with more accuracy, the indirect bonding procedure is not yet the gold standard, probably because of sensitivity of the numerous variables that must be controlled. The aim of this article was to present a modified, standardized, and low-cost indirect bonding technique that allows this procedure to be performed successfully. The technique covers an initial clinical stage, to obtain the models; a laboratory stage, which involves placement of brackets on the models following the facial axis of the clinical crown and the labial projection of the marginal ridges of the posterior teeth and construction of transfer tray using hot glue; and a second clinical stage, to properly transfer the brackets to patient’s teeth. Hot glue used to build the tray molds the teeth and perfectly adapts to the teeth, having enough stiffness to maintain their anatomy and the position of the brackets, but also presenting adequate flexibility to allow removal of the tray avoiding excessive stress over the brackets. In conclusion, the new simplified indirect bonding technique presented here provides a precise placement of brackets on the models, a cheaper way to transfer them to patient, and an easy removal of transfer tray, being a very simple and cost-effective method.

Highlights

Regardless of its complexity, one of the keys to an efficient orthodontic treatment relies on correct positioning of brackets during bonding
The technique covers an initial clinical stage, to obtain the models; a laboratory stage, which involves placement of brackets on the models following the facial axis of the clinical crown and the labial projection of the marginal ridges of the posterior teeth and construction of transfer tray using hot glue; and a second clinical stage, to properly transfer the brackets to patient’s teeth
The new simplified indirect bonding technique presented here provides a precise placement of brackets on the models, a cheaper way to transfer them to patient, and an easy removal of transfer tray, being a very simple and cost-effective method

Summary

Introduction

Regardless of its complexity, one of the keys to an efficient orthodontic treatment relies on correct positioning of brackets during bonding. The customization of bracket bases, proposed by Thomas (1979), became the foundation for contemporary indirect bonding They used composite at the bracket base before being bonded to the model, providing a copy of the buccal surface of Indirect orthodontic bonding with drop-shaped hot glue tray: a simple and cost-effective technique the teeth for posterior use of a two-part liquid sealant to bond the brackets to the dentition. The use of transparent trays (Read and O’ Brien 1990) allowed the application of light-cured adhesive resins and the visual confirmation of ideal tray placement and bracket positions This visibility allowed the orthodontist to clean off excess composite around the brackets and apply light cure when fully satisfied with bracket position and hygiene, promoting less plaque accumulation during treatment (Kalange 2004; Zanini 2016; Aggarwal and Aggarwal 2018). Literature mentions the reduced chair time (Kalange 2004; Pamukçu and Özsoy 2016; Li et al 2019; Singh et al 2019) and the possibility of simultaneous bonding of several accessories (Kalange 2004; Aggarwal and Aggarwal 2018), so making the procedure attractive to both operator and patient

Objectives

Discussion

Conclusion