The changes in shear bond strength due to repeated bonding - an in vitro study
Journal Title: IP Indian Journal of Orthodontics and Dentofacial Research - Year 2017, Vol 3, Issue 3
Abstract
Orthodontist face a range of problems during treatment, one commonly being bracket failure. The reason for this occurrence is usually either because of the patient’s inadvertently applying improper forces to the bracket or of a poor bonding technique. As a result of this a significant amount of precious clinical time is wasted in rebonding brackets in a busy orthodontic practice. This study evaluates the effect of repeated bonding on the shear bond strength of orthodontic brackets. Thirty freshly extracted human premolars were collected and stored in a solution of 0.1% (wt/vol) thymol. The teeth were cleaned, polished, and etched with a 37% phosphoric acid gel. The brackets were bonded with the adhesive and light cured for 40 seconds. The teeth were sequentially bonded and debonded 3 times with the same composite orthodontic adhesive. The results of the analysis of variance comparing the shear bond strength at the 3 debonding attempts indicated that, the highest values for shear bond strength were obtained after the initial bonding. Rebonded teeth have considerably lower and inconsistent shear bond strength. The shear bond strength after two debonding procedures significantly decreased, but was still above the recommended required bond strength.
Authors and Affiliations
Manoj Kumar Sharma, Poonam Majumder, Heeralal Chokotiya, Mayank Sharma, Pratibha Sharma
Keywords
Related Articles
- EP ID EP304873
- DOI 10.18231/2455-6785.2017.0033
- Views 50
- Downloads 0
Invisalign: The Contact Lenses for Teeth
Invisalign is a series of removable clear appliances to effect tooth movement in orthodontic therapy carried through ‘An Invisible’ way of straightening teeth without using antiquated metallic braces and wires. It instea...
Reliability of Submentovertex Projection in Assigning a Reference Cranial Midline for the Assessment of Condylar Asymmetry- A cross-sectional study
Introduction: The aim of the study was to compare the validity and reliability of two different methods for localization of the cranial midline through a cephalometric analysis of mandibular condylar asymmetry in a repre...
One year clinical study of dermatoses in pregnancy”
Abstract Objectives: To study frequency and pattern of physiological skin changes and skin disease effected by pregnancy and factors affecting them. Methods: A total of 300 pregnant women were randomly selected from outp...
Evaluation and assessment of maxillary lateral incisor in cases of palatally impacted canines- A CBCT Study
In cases involving palatally impacted maxillary canines, it is essential to properly identify the location of the impacted tooth. In addition, estimating treatment duration is important to the orthodontist and patient. P...
Evaluation of enamel surface changes by different enamel conditioners and de-bonding procedure using optical coherence tomography: An in-vitro qualitative study
Introduction The purpose of this study is to evaluate surface changes of enamel after using different enamel conditioning agents and bonding adhesives after debonding and cleanup of metal and ceramic brackets using optic...