Original Research

Volume 2023, Article ID IJER 004, 7 pages.

MODE OF FAILURE ANALYSIS OF COMPOSITE RESIN TO BLEACHED ENAMEL PRE-TREATED

WITH NANOCHITOSAN

Ramalingam Logesh 1, Nagarajan Geethapriya2, Shekar Shobana3, Sarath Sarathy S

1Tutor, Department of Oral Medicine and Radiology, Tagore Dental College and Hospital, Chennai, Tamilnadu, India

2Professor, Department of Conservative Dentistry and Endodontics, Sree Balaji Dental College and Hospital,

Chennai, Tamilnadu, India

3Reader, Department of Conservative Dentistry and Endodontics, Tagore Dental College and Hospital, Chennai, Tamilnadu,

India

4Reader, Department of Conservative Dentistry and Endodontics, Thai Moogambigai Dental College and Hospital, Chennai,

Tamilnadu, India

How to cite: Logesh et al. (2023). Mode of failure analysis of composite resin to bleached enamel pre-treated with

nanochitosan. Int J Endod Rehabil.

Address for Correspondence:

Dr Shekar Shobana MDS, Reader,

Department of Conservative Dentistry and Endodontics,

Tagore Dental College and Hospital, Chennai, Tamilnadu

Contact Number - 98884194454

Email - drshobana.bds@gmail.com

Abstract

Introduction:

Tooth bleaching is a minimally invasive esthetic procedure; however, it may adversely affect enamel surface characteristics and compromise the bonding of composite restorations. These effects may be reduced by pretreating the bleached enamel surface with antioxidant agents.

Aim:

The aim of this study was to evaluate the mode of failure of composite restorations bonded to bleached enamel surfaces pretreated with nano-chitosan.

Materials and Methods:

Forty extracted human maxillary central incisors were randomly divided into four groups (n = 10): unbleached enamel restored with composite, bleached enamel restored immediately, bleached enamel restored after a two-week delay, and bleached enamel pretreated with nano-chitosan before composite restoration. Failure modes were analyzed using a universal testing machine and evaluated under a stereomicroscope at 40× magnification. Statistical analysis was performed using the chi-square test (p < 0.05).

Results:

The nano-chitosan–treated group showed a higher incidence of cohesive failure within the enamel substrate (70%) compared with the other groups.

Conclusion:

Pretreatment of bleached enamel with nano-chitosan improved bonding performance, as indicated by an increased occurrence of cohesive failures.

Keywords: Mode of failure, Nano-chitosan, Tooth bleaching

Nil

Conflicts of interest

There are no conflicts of interest.

How to cite this article: Logesh et al. (2023). Mode of failure analysis of composite resin to bleached enamel pre-treated with nanochitosan. Int J Endod Rehabil.

DOI : 10.56501/Int.J.Endod.Rehabil.v2.i2.ijer0004