Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Comparison of Bond Strength of Metal and Ceramic Brackets Bonded with Conventional and High-Power LED Light Curing Units

Fri Sep 30 16:30:30 2022

(2016) Comparison of Bond Strength of Metal and Ceramic Brackets Bonded with Conventional and High-Power LED Light Curing Units. Journal of dentistry (Tehran, Iran). pp. 423-430. ISSN 1735-2150 (Print) 1735-2150 (Linking)

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Official URL: https://www.ncbi.nlm.nih.gov/pubmed/28243304

Abstract

OBJECTIVES: The aim of this study was to evaluate the effect of conventional and high-power light emitting diode (LED) light curing units on shear bond strength (SBS) of metal and ceramic brackets to tooth surface. MATERIALS AND METHODS: Forty sound bovine maxillary central incisors were used for the study. The teeth were divided into four groups (n=10). Teeth surfaces were etched with 37 phosphoric acid for 20 seconds. After applying a uniform layer of adhesive primer on the etched enamel, composite was placed on the base of brackets. The samples were light cured according to the manufacturer's instructions and thermocycled. The SBS was measured. The failure mode was scored using the adhesive remnant index (ARI). RESULTS: The mean SBS of samples in groups A (high-power LED, metal bracket), B (high-power LED, ceramic bracket), C (conventional LED, metal bracket) and D (conventional LED, ceramic bracket) was 23.1+/-3.69, 10.7+/-2.06, 24.92+/-6.37 and 10.74+/-3.18MPa, respectively. The interaction effect of type of LED unit (high-power/conventional) and bracket type on SBS was not statistically significant (P=0.483). In general, type of LED unit did not affect SBS. Type of bracket significantly affected SBS (P<0.001). The ARI score was not significantly influenced by the interaction between the type of LED unit and bracket. CONCLUSIONS: The obtained SBS is the same for both bracket types by use of high-power and conventional LED light curing units. Regardless of the type of LED unit, SBS of ceramic brackets was significantly lower than that of metal brackets.

Item Type: Article
Creators:
CreatorsEmail
Chalipa, J.UNSPECIFIED
Jalali, Y. F.UNSPECIFIED
Gorjizadeh, F.UNSPECIFIED
Baghaeian, P.UNSPECIFIED
Hoseini, M. H.UNSPECIFIED
Mortezai, O.UNSPECIFIED
Keywords: Light-Curing of Dental Adhesives Orthodontic Brackets Shear Strength
Divisions:
Page Range: pp. 423-430
Journal or Publication Title: Journal of dentistry (Tehran, Iran)
Journal Index: Pubmed
Volume: 13
Number: 6
ISSN: 1735-2150 (Print) 1735-2150 (Linking)
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/1044

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