[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit ::
Main Menu
Journal Information::
Editorial Policies::
Articles archive::
For Authors::
Contact us::
Site Facilities::
::
Search in website

Advanced Search
Receive site information
Enter your Email in the following box to receive the site news and information.
Last site contents
:: Contact Us
:: Volume 20, Issue 4 (Foll Text in Persian 2009) ::
J Iran Dent Assoc 2009, 20(4): 278-285 Back to browse issues page
Comparison of fracture resistance in reattached anterior teeth using porcelain, composite and metal laminates
Ebrahim Aminsalehi * 1, Haleh Kazemi-Yazdi , Arash Bahari-Bandari , Shideh Skandari
1- , e_aminsalehi@yahoo.com
Abstract:   (22653 Views)

Comparison of fracture resistance in reattached anterior teeth using porcelain, composite and metal laminates

Dr. Aminsalehi E.,1 Dr. Kazemi-Yazdi H.,1 Dr. Bahari-Bandari A.,2 Dr. Skandari S.2

1 Assistant Professor, Department of Restorative Dentistry, Faculty of Dentistry, Islamic Azad University Tehran, Iran. 2 Dentist.

(Received 16 April, 2008 Accepted 4 Oct, 2008)

Abstract

Background & Aim: Fractured crown is one of the most prevalent dental problems. Dental researchers and clinicians are trying to find the most effective reattachment technique in order to provide adequate resistance as close to intact human tooth as possible. The purpose of this study was to investigate the effects of using porcelain, composite and metal laminates on fracture resistance of the re-attached coronal fragments in human anterior teeth.

Materials & Methods: This in-vivo study was conducted using forty recently extracted human lower incisors. Samples were randomly assigned into four groups. Ten teeth with no prior preparations were selected as the control group. The rest of teeth were sectioned mesiodistally, four mm under and parallel to the incisal edge. These specimens were randomly assigned to three groups. Re-attachment was performed using single bond and flowable composite in all test groups according to manufacturer’s instructions. In porcelain laminate (PL) group, veneer preparations were made for buccal surface (window preparation). Composite and metal laminate preparations were made in lingual surfaces of the teeth in composite laminate (CL) and metal laminate (ML) groups. After impression taking and laboratory process, all laminates were cemented using resin cement. All teeth were mounted in self cured acrylic blocks and kept in saline solution. Using a testing machine, fracture procedures were performed in a cross-head speed of 0.5 mm/minute. The tooth inclination for testing were set at 135° angle before the loading blade and kept it in this position until fracture occurred. Differences between four groups were determined using one way analysis of variance (ANOVA) at 0.05 significance level.

Results: The mean fracture resistant in control, CL, PL and ML groups were 438.85 (±147.14), 420.05 (±109.59), 364.92 (±230.02)and 345.01 (±148.87) respectively. This analysis showed that, group differences were not statistically significant (P>0.05).

Conclusion: Although composite laminate (CL) showed highest fracture resistance after the control group, but all the three techniques can be applied depending on the teeth and patient’s preferences.

Key words: Fractured tooth - Tooth-crown reattachment - Fracture resistance - Porcelain laminates - Composite laminates - Metal laminates.

Corresponding Author: Dr. Aminsalehi E., Assistant Professor, Department of Restorative Dentistry, Faculty of Dentistry, Islamic Azad University. Tehran, Iran.

e.mail: e_aminsalehi@yahoo.com

Keywords: Fractured tooth, Tooth-crown reattachment, Fracture resistance, Porcelain laminates, Composite laminates, Metal laminates.
Full-Text [PDF 1213 kb]   (4357 Downloads)    
Type of Study: Research | Subject: General
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML     Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Aminsalehi E, Kazemi-Yazdi H, Bahari-Bandari A, Skandari S. Comparison of fracture resistance in reattached anterior teeth using porcelain, composite and metal laminates . J Iran Dent Assoc 2009; 20 (4) :278-285
URL: http://jida.ir/article-1-510-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 20, Issue 4 (Foll Text in Persian 2009) Back to browse issues page
Journal of Iranian Dental Association

AWT IMAGE

This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly

Persian site map - English site map - Created in 0.04 seconds with 37 queries by YEKTAWEB 4660