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Journal of Dentistry, Shiraz University of Medical Sciences، جلد ۱۶، شماره ۱، صفحات ۳۰-۰
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عنوان انگلیسی Influence of Different Power Outputs of Er:YAG Laser on Shear Bond Strength of a Resin Composite to Feldspathic Porcelain
چکیده انگلیسی مقاله Statement of the Problem: Porcelain may fracture or chip if exposed to any traumas and can be repaired by using a resin composite. Purpose: This study was aimed to evaluate the influences of Er:YAG laser on shear bond strength (SBS) of resin composite to feldspathic porcelain. Materials and Method: Seventy-two porcelain blocks were divided into six groups (n=12): G1: no treatment (control group); G2: 9% hydrofluoric acid (HF); G3-6 were separately irradiated with Er:YAG laser using four energy parameters: 2W, 100mj (G3); 3W, 150mj (G4); 4W, 200mj (G5) and 5W, 250mj (G6), respectively; and 20 Hz frequency in long-pulse mode. After silane treatment, a resin composite rod was bonded to each of the porcelain block. The SBS was measured following storage and thermocycling. Data were analyzed by one-way ANOVA, Tamhane and Chi-Square tests. Results: The highest SBS (12.29±3.04 MPa) was obtained with HF (G2). The lowest SBS (2.23±0.60 MPa) was observed in G4, followed by G3 (1.96±0.76 MPa). G6 had a significantly higher SBS (8.00±2.22 MPa) than other laser irradiation groups. Conclusion: Although, Er:YAG laser irradiation at 5W, 250mJ/20 Hz was effective in promoting adhesion of resin composite to feldspathic porcelain compared with the control group, it cannot be used as a safe alternative method to HF acid. Laser irradiation with the evaluated parameters in this study does not promote an effective adhesion on porcelain surface to create adequate bond for clinical use.
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نویسندگان مقاله مصطفی صادقی | mostafa sadeghi
dept. of operative dentistry, school of dentistry, rafsanjan university of medical sciences, rafsanjan, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی رفسنجان (Rafsanjan university of medical sciences)

عبدالرحیم داوری | abdolrahim davari
dept. of operative dentistry, member of social determinants of oral health research center, dental school, shahid sadoughi university of medical sciences, yazd, iran.


امین abolghasami ماهانی | amin abolghasami mahani
postgraduate student, polymer faculty, tehran university, tehran, iran.

سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

حمید حکیمی | hamid hakimi
dept. of microbiology, school of medicine, rafsanjan university of medical sciences, rafsanjan, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی رفسنجان (Rafsanjan university of medical sciences)

نشانی اینترنتی http://dentjods.sums.ac.ir/index.php/JDSUMS/article/view/582
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article
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