scholarly journals Debonding Techniques - A Review

2021 ◽  
Vol 10 (38) ◽  
pp. 3430-3435
Author(s):  
PurvaVinod Kumar Dhannawat ◽  
Rizwan Gilani ◽  
Sunita S. Shrivastav ◽  
Ranjit H. Kamble ◽  
Shriya Prakash Murarka ◽  
...  
Keyword(s):  
Bond Strength ◽  
Orthodontic Treatment ◽  
Original Form ◽  
Orthodontic Appliances ◽  
Adhesive Resin ◽  
Permanent Damage ◽  
Treatment Stage ◽  
Iatrogenic Damage ◽  
Ceramic Brackets ◽  
Pre Treatment

BACKGROUND The overall success of orthodontic treatment depends on both bonding as well as debonding techniques. The debonding procedure in orthodontics consists of removal of the attachments (brackets, bondable tubes & buttons) as well as all the adhesive resin from the teeth without causing any permanent damage and to restore the teeth to their pre-treatment stage. The demand for more aesthetic appliance led to the introduction of direct bonding techniques and has made banded attachments almost obsolete in present-day orthodontics. These procedures should not be painful to the patient or damaging to enamel and to obtain these objectives a correct debonding technique is of fundamental importance. The debonding procedure is as essential as bonding for the overall success of the orthodontic treatment. In an attempt to increase the bond strength of orthodontic appliances, we have neglected the fact that these appliances have to be debonded at the end of the treatment. In orthodontics debonding refers to debracketing that is removal of brackets, bondable tubes, buttons, and the adhesive used to bond as well as to restore the form and surface of tooth to its best possible original form by avoiding any type of iatrogenic damage. For achieving such objectives, an accurate debonding procedure is of utmost importance, else it could be needlessly lengthy and painful to the patient and damaging to the enamel. Many researches have been carried out to conclude the best techniques for debonding which will give an ideal finish for the tooth when treatment is terminated. The debonding procedure is mostly done by mechanical means, but its technique should be varied according to the bracket material and type. KEY WORDS Debonding Techniques, Metal Brackets, Ceramic Brackets, Enamel Damage

scholarly journals Three-Dimensional Surface Evaluation and Shear Bond Strength of Three Pre-treatment E-max Surfaces for Metal and Ceramic Orthodontic Brackets

2020 ◽  
Vol 10 (2) ◽  
pp. 113-118
Author(s):  
Huda A. Mohammed ◽  
Omar S. Ali
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Roughness Parameter ◽  
Lithium Disilicate ◽  
Maximum Load ◽  
Maximum Height ◽  
Universal Adhesive ◽  
Ceramic Brackets ◽  
Pre Treatment

3D evaluation and shear bond strength (SBS) for metal and ceramic brackets after three pre-treatment surfaces of lithium disilicate (LD) crowns. Sixty lithium disilicate (LD) crowns were fabricated in laboratory according to manufacturer instruction and then divided into six groups (three groups for metal brackets and three groups for ceramic one). The 1st group for both was treated with round diamond bur, the 2nd one by hydrofluoric acid (HFA) 9.0%, and the 3rd group by laser (Er,Cr:YSGG). All treated surfaces were examined by laser profilometer and scan electron microscope. The Scotchbond Universal Adhesive and Transbond XT were used for bracketing procedure for metal and ceramic bracket (central incisor, 0,022” slot). Universal testing machine was used for shear bond. A crosshead speed of 1 mm/min was used, and the maximum load necessary to deboned the bracket will be recorded. HFA treated surfaces gave a highest SBS for both metal and ceramic brackets, then laser and finally the bur. The lowest roughness parameter Sa (arithmetical mean height) was in bur, both laser and HFA gave no significant differences. The HFA gave a highest Sz (maximum height) and Spc (arithmetic mean peak curvature) value. To increase the shear bond strength, the HFA is one of the best methods for roughness although the laser gave nearby roughness parameters. Ceramic brackets gave higher SBS than metal one with all pre-treatment procedures.

scholarly journals In vitro Assessment of Influence of Various Bleaching Protocols on the Strength of Ceramic Orthodontic Brackets bonded to Bleached Tooth Surface: A Comparative Study

2017 ◽  
Vol 18 (12) ◽  
pp. 1181-1184
Author(s):  
Manish Goutam ◽  
Divya Iska ◽  
Madhvi Singh ◽  
Rajkiran Chitumalla ◽  
Sai C Bala Balasubramanian
Keyword(s):  
Bond Strength ◽  
Comparative Study ◽  
Root Canal ◽  
Shear Bond Strength ◽  
Orthodontic Treatment ◽  
Orthodontic Brackets ◽  
Tooth Surface ◽  
Sodium Perborate ◽  
Ceramic Brackets

ABSTRACT Introduction Esthetics is one of the common issues because of which patients consult dental orthodontic treatment. Two ways of tooth bleaching are available these days, which includes in-office bleach and home bleach. Various bleaching protocols are available these days for treating the tooth surfaces. Hence, we planned the present study for investigating the impact of various intracoronal bleaching protocols on shear bond strength of ceramic brackets bonded to tooth surface after bleaching. Materials and methods The present study included assessment of 100 extracted maxillary central incisors with the integrated buccal surface. A resin block was made and individual teeth were embedded in each block. Root canal therapy procedure was performed in all the teeth, after which 2 mm short of tooth apex up to the level of cementoenamel junction, removal of the root canal filling was done. All the samples were broadly divided into four study groups with 25 samples in each group. Bleaching procedure was carried in all the samples intracoronally followed by testing of shear bond strength using universal force testing machine. Following the modified adhesive remnant index (AI), assessment of remaining adhesive on the brackets was done. All the results were compiled and analyzed by Statistical Package for the Social Sciences (SPSS) software version 17.0. Results In the control group, mean shear bond strength was found to be 17.9 MPa. While comparing the carbamide peroxide (CP) group with sodium perborate study group, we observed a statistically significant difference. Nonsignificant results were obtained while comparing the shear bond strength in between sodium perborate group and hydrogen peroxide (HP) group. Conclusion Intracoronal bleaching does affect the shear bond strength of ceramic brackets. Sodium perborate bleaching influences shear bond strength more strongly than other bleaching agents such as CP and HP. Clinical significance In patients undergoing orthodontic treatment, HP is a preferred agent where bleaching has to be followed by orthodontic bonding to the tooth surface. How to cite this article Iska D, Devanna R, Singh M, Chitumalla R, Balasubramanian SCB, Goutam M. In vitro Assessment of Influence of Various Bleaching Protocols on the Strength of Ceramic Orthodontic Brackets bonded to Bleached Tooth Surface: A Comparative Study. J Contemp Dent Pract 2017;18(12): 1181-1184.

scholarly journals An Investigation about the Influence of Bleaching on Shear Bond Strength of Orthodontic Brackets and on Enamel Colour

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Isabell Immerz ◽  
Peter Proff ◽  
Piero Roemer ◽  
Claudia Reicheneder ◽  
Andreas Faltermeier
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Tooth Enamel ◽  
Adhesive Bond ◽  
Control Group ◽  
Significant Difference ◽  
Ceramic Brackets ◽  
The Difference ◽  
Pre Treatment ◽  
Post Hoc

The aim of the study was to investigate the effect of bleaching on the colouration of tooth enamel and shear bond strength of orthodontic ceramic brackets based upon current whitening practice. The bleaching and bonding techniques were performed on extracted bovine teeth for the investigation of their colorimetric spectrum and the adhesive bond strength on surface enamel. One group was designated as the control group with no pre-treatment. Another group was treated with a 45% hydrogen peroxide solution prior to bonding. The difference in colour was expressed as the Euclidian distance ΔE. The resulting shear bond strength was analyzed and evaluated by scores of Adhesion Remnant Index. Statistical analysis was performed using the Kruskall-Wallis and post-hoc test. The colorimetric analysis revealed statistically significant differences between original and bleached as well as bleached and debonded teeth setting off a blue colour shift. Furthermore, statistically there was no significant difference noted in bonding strength between non-treated surfaces and those treated with peroxide. It can be concluded that peroxide pre-treatment does result in colour differences of teeth. Bonding and debonding procedures seem to have no statistically significant influence on the enamel colour using current materials.

scholarly journals Effects of silane application on the shear bond strength of ceramic orthodontic brackets to enamel surface

2016 ◽  
Vol 49 (4) ◽  
pp. 189
Author(s):  
Pinandi Sri Pudyani ◽  
Setiarini Widiarsanti
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Enamel Surface ◽  
Orthodontic Appliances ◽  
Shear Mode ◽  
Enamel Structure ◽  
Fixed Orthodontic Appliances ◽  
Bonding Failure ◽  
Ceramic Brackets ◽  
Ceramic Bracket

Background: Fixed orthodontic appliances with ceramic brackets are used frequently to fulfill the aesthetic demand of patient through orthodontic treatment. Ceramic brackets have some weaknesses such as bond strength and enamel surface damage. In high bond strength the risk of damage in enamel surfaces increases after debonding. Purpose: This study aimed to determine the effect of silane on base of bracket and adhesive to shear bond strength and enamel structure of ceramic bracket. Method: Sixteen extracted upper premolars were randomly divided into four groups based on silane or no silane on the bracket base and on the adhesive surface. Design of the base on ceramic bracket in this research was microcrystalline to manage the influence of mechanical interlocking. Samples were tested in shear mode on a universal testing machine after attachment. Following it, adhesive remnant index (ARI) scores were used to assess bond failure site. Statistical analysis was performed using a two-way Anova and the Mann-Whitney test. A scanning electron microscope (SEM) with a magnification of 2000x was used to observe enamel structure after debonding. Result: Shear bond strength was increased between group without silane and group with silane on the base of bracket (p<0,05). There was no significance different between group without silane and group with silane on adhesive (p<0,05). Conclusion: Application of silane on base of bracket increases shear bond strength, however, application of silane on adhesive site does not increase shear bond strength of ceramic bracket. Most bonding failure occurred at the enamel adhesive interface and damage occurred on enamel structure in group contains silane of ceramic bracket.

scholarly journals Impact of brackets on smile esthetics: laypersons and orthodontists perception

2012 ◽  
Vol 17 (5) ◽  
pp. 64-70 ◽  
Author(s):  
Seandra Cordeiro de Oliveira ◽  
Rachel D'Aurea Furquim ◽  
Adilson Luiz Ramos
Keyword(s):  
Error Analysis ◽  
Young Woman ◽  
Visual Analog Scale ◽  
Orthodontic Treatment ◽  
Wilcoxon Test ◽  
Orthodontic Appliances ◽  
Analog Scale ◽  
Ceramic Brackets ◽  
Ceramic Bracket ◽  
Smile Esthetics

OBJECTIVE: This study evaluated the influence of orthodontic appliances on smile esthetics assessed by lay adolescents, lay adults and orthodontists. METHODS: A facial photograph of a smiling young woman was used under the following conditions: With metal orthodontic brackets ligated by different elastic ligature colors (green, red and gray), with ceramic bracket brackets (transparent elastic ligature) and without brackets, totaling five 15 x 20 cm pictures. For the photograph assessment, 16 lay adolescents, 16 lay adults and 16 orthodontists were randomly selected. The photographs were randomly arranged in an album, followed by a visual analog scale (VAS) for the scores registration. Scores in both evaluations of each group of evaluators (adolescents, adults and orthodontists) were submitted to error analysis by WILCOXON test and multiple comparison among groups performed by Kruskal - Wallis at 5% significance. RESULTS: Orthodontists, adults and adolescents agreed in their opinions, although the orthodontists gave lower scores in their assessments. It could be observed that ceramic brackets were more acceptable concerning the smile esthetics, whereas the metal brackets received the lowest scores. CONCLUSION: Orthodontists, adults and even adolescents seem to prefer esthetic solutions during orthodontic treatment.

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