Debonding Shear Strength of Orthodontic Tubes Bonded to Skeletal Anchorage Miniplates with Different Agents

Lucas Da Silva Meirelles,Rogério De Oliveira,Neimar Scolari,Mauricio Pereira,Orion L Haas,Andre Favoretto

doi:10.2174/1874210601913010551

Abstract

Introduction: Most miniplates used for skeletal anchorage lack built-in orthodontic devices. To address this issue, orthodontists must use creative solutions, such as bonding buttons, brackets, or tubes directly to the miniplates, thus making them more versatile devices that provide a wider range of tooth movement possibilities. The purpose of the present study was to ascertain the debonding strength in Megapascals (MPa) of orthodontic accessories bonded to skeletal anchorage miniplates with different bonding agents. Methods: Forty specimens were divided into two equal groups by bonding agent: Group 1, resin (Transbond XT®, 3M ESPE); Group 2, cyanoacrylate (Scotchbond®, 3M ESPE). Shear strength testing was performed in an EMIC DL-2000 universal testing machine. Results: The results obtained were 2.28 ± 0.44 MPa for Group 1 and 4.90 ± 0.76 MPa for Group 2. The Kolmogorov-Smirnov test was used to assess the normality of data distribution. Student's t-test was used to compare means in the response variable. Conclusion: A statistically significant difference was observed between groups. However, both bonding agents provided strength in excess of that needed for secure orthodontic tooth movement.

Highlights

Most miniplates used for skeletal anchorage lack built-in orthodontic devices
Debonding shear strength varied within both the resin and cyanoacrylate groups
In the resin group, debonding strength ranged from a minimum of 1.42 MPa to a maximum of 3.17 MPa

Summary

Introduction

Most miniplates used for skeletal anchorage lack built-in orthodontic devices. To address this issue, orthodontists must use creative solutions, such as bonding buttons, brackets, or tubes directly to the miniplates, making them more versatile devices that provide a wider range of tooth movement possibilities. Titanium miniplates and screws are widely used in oral and maxillofacial surgery, and have established predictability and biocompatibility [4]. The use of these devices for temporary skeletal anchorage is a relatively new practice, and has become a topic of great interest in orthodontics. In 2002, de Clerck developed the zygoma anchorage system, which uses the same principles and employs a straight plate and three screws [6]

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