Effect of calcium hydroxide intracanal dressing on the bond strength of a resin-based endodontic sealer

João Vicente Baroni Barbizam; Martin Trope; Erica C N Teixeira; Mário Tanomaru-Filho; Fabrício B Teixeira

doi:10.1590/s0103-64402008000300009

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Effect of calcium hydroxide intracanal dressing on the bond strength of a resin-based endodontic sealer

Journal article

Open access

Effect of calcium hydroxide intracanal dressing on the bond strength of a resin-based endodontic sealer

João Vicente Baroni Barbizam, Martin Trope, Erica C N Teixeira, Mário Tanomaru-Filho and Fabrício B Teixeira

Brazilian dental journal, Vol.19(3), pp.224-227

2008

DOI: 10.1590/s0103-64402008000300009

PMID: 18949295

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https://doi.org/10.1590/s0103-64402008000300009View

Published (Version of record) Open Access

Abstract

The aim of this in vitro study was to evaluate the bond strength of Epiphany resin-based sealer to dentin walls after placement of calcium hydroxide [Ca(OH)2] dressings. Fifteen extracted single-rooted human teeth were instrumented using 2.5% NaOCl + EDTA as irrigants. The teeth were randomly assigned to 3 groups (n=5), according to the intracanal dressing: G1= Ca(OH)2 + saline; G2= Ca(OH)2 + 2% chlorhexidine gluconate (CHX) gel; and G3= saline (control). After 10 days of storage in 100% humidity at 37 degrees C, the dressings were removed and the root canals were filled with Epiphany sealer. After additional 48 h of storage, the specimens were sectioned transversally into 2-mm-thick discs. Push-out tests were performed (1 mm/min, Instron 4411) and the maximum loads at failure were recorded in MPa. One-way ANOVA and Newman-Keuls tests showed a statistically significant decrease in bond strength when a Ca(OH)2 dressing was used before root canal filling with Epiphany (G1= 10.18 +/- 1.99 and G2= 9.98 +/- 2.97) compared to the control group (13.82 +/- 3.9) (p< 0.05). It may be concluded that the use of Ca(OH)2 as an intracanal dressing material affected the adhesion of Epiphany to the root canal walls, but even though the values were within the acceptable range found in the literature.

Materials Testing

Root Canal Irrigants - chemistry

Anti-Infective Agents, Local - therapeutic use

Sodium Chloride

Temperature

Humans

Stress, Mechanical

Dentin - ultrastructure

Root Canal Irrigants - therapeutic use

Calcium Hydroxide - chemistry

Root Canal Filling Materials - therapeutic use

Chlorhexidine - therapeutic use

Chlorhexidine - analogs & derivatives

Time Factors

Dental Disinfectants - therapeutic use

Humidity

Calcium Hydroxide - therapeutic use

Root Canal Preparation

Dental Bonding

Chelating Agents - therapeutic use

Edetic Acid - therapeutic use

Root Canal Filling Materials - chemistry

Sodium Hypochlorite - therapeutic use

Details

Title: Subtitle: Effect of calcium hydroxide intracanal dressing on the bond strength of a resin-based endodontic sealer
Creators: João Vicente Baroni Barbizam - Department of Endodontics, Dental School, University of North Carolina, Chapel Hill, NC, USA. barbizam@upf.br
Martin Trope
Erica C N Teixeira
Mário Tanomaru-Filho
Fabrício B Teixeira
Resource Type: Journal article
Publication Details: Brazilian dental journal, Vol.19(3), pp.224-227
DOI: 10.1590/s0103-64402008000300009
PMID: 18949295
NLM abbreviation: Braz Dent J
eISSN: 1806-4760
Publisher: Brazil
Language: English
Date published: 2008
Academic Unit: Endodontics; Operative Dentistry
Record Identifier: 9984065803402771

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