Effect of Two-minute Application of 35% Sodium Ascorbate on Composite Bond Strength following Bleaching

Eman H Ismail; Evren Kilinc; Patrick C Hardigan; James K Rothrock; Jeffrey Y Thompson; Cristina Garcia-Godoy

doi:10.5005/jp-journals-10024-2142

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Effect of Two-minute Application of 35% Sodium Ascorbate on Composite Bond Strength following Bleaching

Journal article

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Peer reviewed

Effect of Two-minute Application of 35% Sodium Ascorbate on Composite Bond Strength following Bleaching

Eman H Ismail, Evren Kilinc, Patrick C Hardigan, James K Rothrock, Jeffrey Y Thompson and Cristina Garcia-Godoy

The journal of contemporary dental practice, Vol.18(10), pp.874-880

10/2017

DOI: 10.5005/jp-journals-10024-2142

PMID: 28989123

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Published (Version of record)The Journal of Contemporary Dental Practice 2017: 18 (10):874-880.

Abstract

AIM: The aim of this study is to assess the effect of 35% sodium ascorbate on microtensile bond strength of dentin immediately after bleaching with 35% hydrogen peroxide. MATERIALS AND METHODS: A total of 25 sound human 3rd molars were collected. Teeth were randomly divided into five groups for different treatments: Group I [bleaching + immediate bonding (i.e., restoration)], group II (bleaching + delayed bonding), group III (bleaching + sodium ascorbate + immediate bonding), group IV (bleaching + sodium ascorbate + delayed bonding), and group V (bonding only). After bleaching, but before bonding, groups II and IV were stored for 1 week in deionized water at 37°C. All samples were bonded using OptiBoned FL (Kerr) and Filtek Supreme (3M/ESPE). Teeth were sectioned into 1 × 1 mm 2 bars, and microtensile bond strength was tested with a universal testing machine (Instron 8841) at a cross-head speed of 0.5 mm/minute. RESULTS: Microtensile bond strength differed significantly across the five groups, with a significant reduction in microtensile bond strength observed for samples in group I relative to samples in any of the other treatment groups (p < 0.05). CONCLUSION: The application of a high concentration of sodium ascorbate for a shorter time reversed the negative effect of 35% hydrogen peroxide bleaching on composite bonding strength to dentin. CLINICAL SIGNIFICANCE: The negative effects of bleaching on composite bonding can be neutralized by the application of the reversing agent sodium ascorbate thus, increasing the efficiency of clinic chair time. This is clinically relevant for those patients requiring restorative treatment immediately after in-office bleaching.

Antioxidants

Dentistry

OAfund

Ascorbic acid

Bleaching agents

Composite resin

Dentin

Esthetic

Hydrogen peroxide

Laboratory research

tooth bleaching agents

Details

Title: Subtitle: Effect of Two-minute Application of 35% Sodium Ascorbate on Composite Bond Strength following Bleaching
Creators: Eman H Ismail - University of Iowa
Evren Kilinc - Nova Southeastern University
Patrick C Hardigan - Nova Southeastern University
James K Rothrock - Nova Southeastern University
Jeffrey Y Thompson - Nova Southeastern University
Cristina Garcia-Godoy - Nova Southeastern University
Resource Type: Journal article
Publication Details: The journal of contemporary dental practice, Vol.18(10), pp.874-880
DOI: 10.5005/jp-journals-10024-2142
PMID: 28989123
NLM abbreviation: J Contemp Dent Pract.
ISSN: 1526-3711
Grant note: Funder: College of Dental Medicine, Nova Southeastern University, Health Profession Division, Fort Lauderdale, FL, USA., Grant ID: (HPD-COM-2013-19)
Language: English
Date published: 10/2017
Academic Unit: Oral Science Graduate Program; College of Dentistry
Record Identifier: 9983557486402771

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