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MICROTENSILE BOND STRENGTH AND NANOLEACKAGE OF DENTIN SURFACES PRETREATED WITH DIFFERENT ETCHING MATERIALS

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Last updated: 01 Jan 2025

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Abstract

This in-vitro study aimed to evaluate microtensile bond strength and nanoleackage of dentin surfaces pretreated with different etching materials. Twenty four extracted human intact second molar were selected and debrided to remove remnants of periodontal ligaments. Occlusal surfaces were flattened to expose a flat area of dentin under copious water coolant. One dentin bonding system (Te-Econom Bond) and one dental resin composite restoration (Tetric N-Ceram) were used for the study. The teeth were divided into four groups (6 each) according to the type of etchant material used as follows: group A – citric acid 6%, group B – citric acid 10%, group C – citric acid 20%, and group D- phosphoric acid 37%. The etchants were applied for 15 seconds to the dentin surface. After which teeth were washed, dried, then bonding agent was applied followed by the resin composite restoration. Then a longitudinal sectioning of restored teeth was made to obtain composite-dentin beams of (0.9 x 0.9 mm) in area. Each beam was composed of composite and dentin with adhesive at the interface. The microtensile bond strength (μTBS) was measured and the nanoleakage was observed using SEM. Data was then recorded, tabulated and statistically analyzed. There was no statistical significant difference between the results of the μTBS of groups A, B and D while group C has the lowest microtensile bond strength (19.20± 4.59). For all groups, nanoleackage was more demonstrated at group C and D, while group B show mild nanoleackage and no nanoleackage was observed for group A. It was concluded that low concentrations of citric acid was effective as etchant material compared to phosphoric acid on dentin surface in terms of microtensile bond strength and nanoleakage

DOI

10.21608/edj.2018.79516

Authors

First Name

Ahmed

Last Name

A. Aziz

MiddleName

Adel

Affiliation

Lecturer of Conservative Dentistry, Faculty of Dentistry, Badr University in Cairo (BUC), Cairo, Egypt

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City

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Orcid

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First Name

Heba

Last Name

El Imam

MiddleName

Fathy

Affiliation

Lecturer of Oral Histology , Faculty of Dentistry, Egyptian Russian University, Cairo, Egypt

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Orcid

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Volume

64

Article Issue

Issue 4 - October (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)

Related Issue

11458

Issue Date

2018-10-01

Receive Date

2020-03-29

Publish Date

2018-10-01

Page Start

4,003

Page End

4,012

Print ISSN

0070-9484

Online ISSN

2090-2360

Article File

EDJ_Volume 64_Issue Issue 4 - October (Fixed Prosthodontics, Dental Materials, C….pdf

PDF . 709.9kB

Link

https://edj.journals.ekb.eg/article_79516.html

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https://edj.journals.ekb.eg/service?article_code=79516

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Original Article

Type Code

254

Publication Type

Journal

Publication Title

Egyptian Dental Journal

Publication Link

https://edj.journals.ekb.eg/

MainTitle

MICROTENSILE BOND STRENGTH AND NANOLEACKAGE OF DENTIN SURFACES PRETREATED WITH DIFFERENT ETCHING MATERIALS

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Article

Created At

22 Jan 2023