The Open Dentistry Journal

ISSN: 1874-2106 ― Volume 14, 2020

Assessment of Bonding Effectiveness of Adhesive Materials to Tooth Structure using Bond Strength Test Methods: A Review of Literature

Aminah M. El Mourad*
Department of Restorative Dental Sciences, King Saud University, Riyadh, Saudi Arabia



The rapid developments in the field of adhesive dental materials have led to improvements in many aspects of clinical dentistry. Adhesive bond strength plays an important role in determining the clinical performance and longevity of dental restorations. Nevertheless, bond strength tests have never been well-standardized, although a number of important recommendations have been made.


The aim of this paper is to critically review the validity of different bond strength testing methods for assessment of bonding effectiveness of adhesive materials to tooth structure and discuss factors that may affect bond strength measurement.

Data Collection:

Relevant literature published between 1983 and 2018 was collected and reviewed from the PubMed database and Google scholar resources.

Review Results:

Results of the current bond testing methods should be used to compare materials tested under the same laboratory settings, but they shouldn’t be used to make direct inferences on their clinical behaviour. Shear and micro-shear tests, result in non-uniform stress distribution, stress concentration at the substrate area, and predominantly tensile stresses rather than shear stresses. Micro-tensile bond tests provide many advantages over the shear tests, although these methods are technique sensitive and labour intensive.


Bond strength testing methods should be well-standardized, but there are many factors that cannot be fully controlled which leads to variation and misinterpretation of the data about the bonding abilities of adhesives.

Clinical Significance:

New adhesive materials should be subjected to a combination of testing protocols to properly assess their bonding effectiveness.

Keywords: Adhesive, Bond strength, Shear, Tensile, Push-out, Micro-shear, Micro-tensile, Micro- push-out.

Article Information

Identifiers and Pagination:

Year: 2018
Volume: 12
First Page: 664
Last Page: 678
Publisher Id: TODENTJ-12-664
DOI: 10.2174/1745017901814010664

Article History:

Received Date: 4/6/2018
Revision Received Date: 30/7/2018
Acceptance Date: 3/9/2018
Electronic publication date: 28/09/2018
Collection year: 2018

© 2018 Aminah M. El Mourad.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: ( This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Restorative Dental Sciences, King Saud University, Riyadh, Saudi Arabia; Tel: +966 11 8055832; E-mail:

Track Your Manuscript:


"Thank you for your magnificent and marvelous support throughout the publication stages. I would like to endorse my experience with you as a Junior Researcher and a recent graduate of the Dental school. Once again Thank you for your Great Help and Guidance throughout the stages of Publication. You guys are a great team and I am proud to be a Young Bentham author."

Asra Sabir Hussain
The University of Edinburgh Business School, UK

"My experience with Bentham Open was a valuable one because the quality of the services and analysis of my paper contributed in improving what we intended to convey to the readers."

José Ricardo Kina
Department of Surgery and Integrated Clinic,
Araçatuba School of Dentistry, São Paulo State University

"The Publication Manager was very cooperative and replied my mails and guided me without any delays; however the reviewing process was too long."

Mahtab Memarpour
Prevention of Oral and Dental Disease Research Center,
Department of Pediatric Dentistry, School of Dentistry,
Shiraz University of Medical Sciences, Shiraz,

Browse Contents

Webmaster Contact:
Copyright © 2020 Bentham Open