Effect of ultrasonic cleanser on base metal alloy to enamel bond strength after surface treatment by acid and sandblast

Malek Nejad, Fatemeh and Ghavam Nasiri, Majaneh (2003) Effect of ultrasonic cleanser on base metal alloy to enamel bond strength after surface treatment by acid and sandblast. Journal of Mashhad Dental School, 27 (Issue). pp. 57-66.

JMDS_Volume 27_Issue ش�%85ار�%87 1,2_Pages 57-66.pdf

Download (499kB) | Preview
Official URL: http://jmds.mums.ac.ir/article_1629.html


Introduction: This invitro study evaluated the effect of ultrasonic cleanser after casting surface treatment on bond strength of alloy to enamel. Therefore, the aim of this study was to evaluate the effect of ultrasonic on bond strength of etched base metal. Materials and Methods : 80 sound canines were selected. After cleaning and mounting in cold cured acryle, rectangular Ni-Cr-Br plates with 9 mm2 surface area and 0.5 mm thickness were made that adapted with lingual surfaces. One process was created in mid part of each plate. Fitting surface of all samples were sandblasted. They were divided into two groups of 40,based on the type of treatment: A)surface treatment with acidic M3 gel. B) surface treatment with 150-200µ alumina sandblast. Finally each group was divided into two subgroups of 20, based on using the ultrasonic or without using it. Then samples were adhered to lingual surfaces with Scotch Bond Mulit Purpose (3M – Co). and Duo Cement (Coltene). After 1000 thermal cycling, shear test was established by cross head speed of 2mm/min. Data analysis was done by two variables ANOVA with 95 significance level. Results: 1. Mean bond strength was significantly greater in subgroup without ultrasonic use (60-74 kg) than the other subgroups (45-62kg). 2. The group using just M3 acidic gel without ultrasonic had the greatest bond strength (74.52 kg). 3. Comparing two factors (Sandblast- Acid), bond strength was greater after using acid. 4. Increase in bond strength was observed in all groups without ultrasonic use. Conclusion : Use of M3 acidic gel without ultrasonic use increases the bond strength of Ni-Cr-Br alloy to enamel significantly.

Item Type: Article
Subjects: WU Dentistry. Oral surgery
Divisions: Journals > Journal of Mashhad Dental School
Depositing User: jmds jmds
Date Deposited: 25 Sep 2017 17:29
Last Modified: 25 Sep 2017 17:29
URI: http://eprints.mums.ac.ir/id/eprint/4325

Actions (login required)

View Item View Item