title: Effect of Different Anti-Oxidants on Shear Bond Strength of Composite Resins to Bleached Human Enamel.
abstract: BACKGROUND
  The bond strength of the composite to the bleached enamel plays a very important role in the success and longevity of an aesthetic restoration.
  
  
  OBJECTIVE
  The aim of this study was to compare and evaluate the effect of Aloe Vera with 10% Sodium Ascorbate on the Shear bond strength of composite resin to bleached human enamel.
  
  
  METHODS
  Fifty freshly extracted human maxillary central incisors were selected and divided into 5 groups. Group I and V are unbleached and bleached controls groups respectively. Group II, III, IV served as experimental groups. The labial surfaces of groups II, III, IV, V were treated with 35% Carbamide Peroxide for 30mins. Group II specimens were subjected to delayed composite bonding. Group III and IV specimens were subjected to application of 10% Sodium Ascorbate and leaf extract of Aloe Vera following the Carbamide Peroxide bleaching respectively. Specimens were subjected to shear bond strength using universal testing machine and the results were statistically analysed using ANOVA test. Tukey (HSD) Honest Significant Difference test was used to comparatively analyse statistical differences between the groups. A p-value <0.05 is taken as statistically significant.
  
  
  RESULTS
  The mean shear bond strength values of Group V showed significantly lower bond strengths than Groups I, II, III, IV (p-value <0.05). There was no statistically significant difference between the shear bond strength values of groups I, II, III, IV.
  
  
  CONCLUSIONS
  Treatment of the bleached enamel surface with Aloe Vera and 10% Sodium Ascorbate provided consistently better bond strength. Aloe Vera may be used as an alternative to 10% Sodium Ascorbate.
authors.affiliation: Post Graduate Student, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India .
authors.forename: Anirudh
authors.initials: A
authors.lastname: Kadiyala
authors.affiliation: Post Graduate Student, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India .
authors.forename: Hari Krishna
authors.initials: HK
authors.lastname: Saladi
authors.affiliation: Senior Lecturer, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India .
authors.forename: Indira Priyadarshini
authors.initials: IP
authors.lastname: Bollu
authors.affiliation: Senior Lecturer, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India .
authors.forename: Devipriya
authors.initials: D
authors.lastname: Burla
authors.affiliation: Reader, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India .
authors.forename: Srinidhi Vishnu
authors.initials: SV
authors.lastname: Ballullaya
authors.affiliation: Professor, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India .
authors.forename: Srihari
authors.initials: S
authors.lastname: Devalla
authors.affiliation: Professor, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India .
authors.forename: Sohani
authors.initials: S
authors.lastname: Maroli
authors.affiliation: Professor and HOD, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India .
authors.forename: Thumu
authors.initials: T
authors.lastname: Jayaprakash
keywords: 10% sodium ascorbate; Aloe vera; Bleaching; Carbamide peroxide; Shear bond strength