Acta Scientific Dental Sciences (ASDS)(ISSN: 2581-4893)

Research Article Volume 5 Issue 6

Comparative Evaluation of the Shear Bond Strength and Debonding Properties of a New Self Etch Adhesive Composite Cement and Self Etching Primer Composite System Used for Orthodontic Bracket bonding - An In Vitro Study

Sameer Ahmad Malik1* and Laxmikanth SM2

1Senior Lecturer, Department of Orthodontics, Oxford Dental College, Bangalore, India
2HOD, Department of Orthodontics, Oxford Dental College, Bangalore, India

*Corresponding Author: Sameer Ahmad Malik, Senior Lecturer, Department of Orthodontics, Oxford Dental College, Bangalore, India.

Received: March 02, 2021; Published: May 24, 2021

Abstract

Background of the Study: Over the last 50 years the bonding of various adhesives to enamel and dentin has developed a niche in nearly all areas of dentistry, including orthodontics. Combining conditioning and priming into a single step improves bonding time and cost-effectiveness to the clinician and Orthodontists use the acid-etch bonding technique to attach brackets to the enamel surface. Maintaining a sound, unblemished enamel surface after debonding the brackets is a primary concern to the clinician. Self-adhesive cements were introduced in 2002 as a new subgroup of resin cements. Self-adhesive cements do not require any pre treatment of the tooth surface. Once the cement is mixed, its application is a single clinical step. Sufficient research is not available with regard to whether self etching adhesives can be satisfactorily used in the field of orthodontics to bond the brackets. Maxcem Elite Chroma (Kerr Dental) is a self-etch/self-adhesive resin cement with a Colour Cleanup Indicator. The use of Maxcem Elite Chroma in the field of orthodontics is rather unexplored. Its basic properties such as SBS, the debonding properties and its effect on enamel demineralization need to be evaluated to commend its use for bonding in orthodontics.

Aims and Objective: Comparative evaluation of the shear bond strength and debonding properties of self etch adhesive composite cement (Maxcem Elite Croma) versus self etching primer composite system ((Transbond Plus SEP, 3M Unitek, Monrovia, Calif) used for orthodontic bracket bonding.

Materials and Methods: This was an in vitro study, conducted in controlled laboratory settings. Forty extracted human premolars extracted for purpose of orthodontic treatment. 20 premolars bonded with orthodontic brackets using the self-etch primer Transbond Plus (3M Unitek) containing both the acid and the primer by following manufacturer’s recommendation and 20 premolars bonded with orthodontic brackets using the self-etching composite adhesive (Maxcem Elite™ Chroma Self-etch/Self-adhesive Resin Cement) cement by following manufacturer’s recommendation). Results of continuous measurements were presented as mean ± SD. Significance was assessed at 5% level of significance at 95% confident interval. Mann Whitney U test was used to compare the shear bond strength of self-etching composite adhesive to self etch primer). Chi square test was used to evaluate the differences in ARI scores among both the groups. Chi square test showed that there were statistically significant differences among the groups (p < 0.001).

 Results: Maxcem elite chroma exhibited the highest mean shear bond strength of 25.7 MPa and Transbond Plus (3M Unitek, Monrovia, CA, USA) exhibited the mean shear bond strength of 18.7 MPA. Maxcem elite chroma exhibited the highest ARI index thereby demonstrating its better debonding properties.

Conclusion: Within the limitations of the current study we concluded that: 1. New self-etch, self-adhesive bonding system surprisingly showed high SBS as compared to self etch primer, 2. It also demonstrated a high ARI scores on the bracket surface which signifies that the debonding takes place mostly at tooth resin interface thereby reduces the chances of deleterious effects like crazing of enamel surface from debonding forces.

Keywords: Bonding; Shear Bond Strength; Adhesive Remanent Index; Self Etch Bonding Agent; Self Etch Adhesive Resin Cements

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Citation

Citation: Sameer Ahmad Malik and Laxmikanth SM. “Comparative Evaluation of the Shear Bond Strength and Debonding Properties of a New Self Etch Adhesive Composite Cement and Self Etching Primer Composite System Used for Orthodontic Bracket bonding - An In Vitro Study”. Acta Scientific Dental Sciences 5.6 (2021): 112-121.




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