1Sr. Lecturer, Department of Conservative Dentistry & Endodontics, KLRs Lenora Institute of Dental Sciences, Rajahmundry, Andhra Pradesh.
2Professor and HOD, Department of Conservative Dentistry & Endodontics, SIBAR Institute of Dental Sciences, Takkellapadu, Andhra Pradesh.
3Sr.Lecturer, Department of Conservative Dentistry & Endodontics, KLRs Lenora Institute of Dental Sciences, Rajahmundry, Andhra Pradesh.
Online published on 19 November, 2012.
To compare the micro shear bond strength of coronal dentin and pulp chamber dentin using three dentin bonding systems namely One bottle total etch system (XP Bond – 5th generation), two step self-etch system (Clearfil SE Bond – 6th generation) and All-in-one system (G Bond- 7th generation).
Thirty human mandibular molars were collected out of which sixty samples were prepared by sectioning each tooth into coronal dentin and pulpal floor dentin were obtained which were divided into two major groups. Group I: 30 Coronal dentin samples. Group II: 30 Pulpal floor dentin samples. Both the groups were further subdivided depending on bonding agent used. Subgroup Ia: XP Bond. Subgroup Ib: Clearfil SE Bond. Subgroup Ic: G Bond. Subgroup IIa: XP Bond Subgroup, IIb: Clearfil SE Bond, Subgroup IIc: G Bond. Resin composite was bonded to these samples and tested for micro-shear bond strength. The mean bond strengths & standard deviations were calculated & analyzed using One Way ANOVA test and Student t- test (unpaired) & HSD Post Hoc tests.
Micro shear bond strength showed higher values to coronal dentin compared to pulpal floor dentin. All - in - one system (G Bond) showed least bond strength values to both the regions (coronal dentin & pulpal floor dentin. Clearfil SE Bond
Coronal dentin, Pulpal floor dentin, Total etch, Self etch, All-in one system, Microshear bond strength
