Comparative evaluation of chlorhexidine, grape seed extract, riboflavin/chitosan modification on microtensile bond strength of composite resin to dentin after polymerase chain reaction thermocycling: An in vitro study

• Published in: Journal of conservative dentistry 2017-03, Vol.20 (2), p.120-124
• Main Authors: Gajjela, Rani Samyukta, Satish, R Kalyan, Sajjan, Girija S, Varma, K Madhu, Rambabu, T, Vijaya Lakshmi, B H
• Format: Article
• Language: English
• Subjects: Adhesives; Bond strength; Chitin; Chitosan; Chlorhexidine; Collagen; Comparative analysis; Curing; Data processing; Dental restorative materials; Dentin; Dentistry; Dosage and administration; Free radicals; Light; Mechanical properties; Molars; Original; Plant extracts; Polymerase chain reaction; Riboflavin; Seeds; Teeth; Vitamin B
• ISSN: 0972-0707; 0974-5203
• DOI: 10.4103/0972-0707.212241

The purpose of this study was to evaluate the influence of chlorhexidine (CHX), grape seed extract (GSE), riboflavin/chitosan modification on microtensile bond strength (μTBS) of composite resin to dentin after polymerase chain reaction (PCR) thermocycling. Forty extracted human molars were used and a flat surface was then prepared by removing the occlusal one-third. The teeth were randomly assigned into four groups - Group I in which self-etch adhesive (Adper Easy One) was applied and Groups II, III, IV were pretreated with 2% CHX, 6.5% GSE, and 1% riboflavin/chitosan, respectively, before the application of self-etch adhesive. Composite build-ups were constructed, and PCR thermocycling (5000 cycles) was performed. The μTBS was evaluated using the universal testing machine. Data were analyzed using one-way analysis of variance and Tukey's test. The mean μTBS values for Group I (control), Group II (CHX), Group III (GSE), and Group IV (riboflavin/chitosan modification) were 30.81, 43.15, 38.79, and 35.07 MPa, respectively. Pretreatment with CHX and GSE leads to a significant increase in μTBS of composite resin to dentin.