EFFECT OF THERMAL AND MECHANICAL LOAD CYCLING ON MICROLEAKAGE OF PACKABLE COMPOSITE RESIN

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YASINI E.; PAHLAVAN A.; MIRZAEI MANSOUREH; HASANI TABATABAEI MASOUMEH; ARAMI SAKINEH; KERMANSHAH H.; MAJD M.

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Journal: JOURNAL OF ISLAMIC DENTAL ASSOCIATION OF IRAN (MAJALLAH-I-DANDANPIZISHKI) Year:2010 | Volume:22 | Issue:1 (74) Page(s): 17-22

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Title

EFFECT OF THERMAL AND MECHANICAL LOAD CYCLING ON MICROLEAKAGE OF PACKABLE COMPOSITE RESIN

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Keywords

MICROLEAKAGEQ3

THERMAL CYCLINGQ3

MECHANICAL CYCLINGQ3

PACKABLE COMPOSITEQ3

Abstract

Background and Aim: Some studies have reported PACKABLE COMPOSITE has good mechanical properties including less stress, polymerization shrinkage and lower coefficient in thermal expansion, but it’s adaptation to cavity walls is not so good. This study evaluated the THERMAL CYCLING and Mechanical loading on MICROLEAKAGE of PACKABLE COMPOSITE using in-vitro method.Materials and Methods: Forty eight bovine incisors were selected; Cl II cavity preparations were performed. The teeth were etched with 37% phosphoric acid. After etching, the teeth were rinsed with distilled water and dried with cotton pellet. Single bond (3M) adhesive system was applied next according to the manufacturer’s instructions. The surface was light-cured (Intensity 520 MW/cm2) and the cavities were filled with P 60 composite (3M). The teeth were randomly divided into two groups and two subgroups (n=12). Each group was treated with different thermal and mechanical load cycling. The entire surface of each tooth was coated with three layers of Nail polish, except for the 1-mm width around the cervical margin. The teeth were immersed in 2% fushin solution for two hours and then embedded in acrylic resin. Then they were hemi-sectioned longitudinally in a mesio-distal direction through the center of the restoration. The half tooth specimens were evaluated according to the amount of dye MICROLEAKAGE by means of a 40×magnification. Statistical analysis was conducted using SPSS software, and Kruskal-Wallis test.Results: No significant difference was detected between the four groups (P>0.05).Conclusion: According to the results of this study, thermo cycling and mechanical loading showed no effect on MICROLEAKAGE.

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APA: Copy

YASINI, E., PAHLAVAN, A., MIRZAEI, MANSOUREH, HASANI TABATABAEI, MASOUMEH, ARAMI, SAKINEH, KERMANSHAH, H., & MAJD, M.. (2010). EFFECT OF THERMAL AND MECHANICAL LOAD CYCLING ON MICROLEAKAGE OF PACKABLE COMPOSITE RESIN. JOURNAL OF IRANIAN DENTAL ASSOCIATION (JIDA) (MAJALLAH-I-DANDANPIZISHKI), 22(1 (74)), 17-22. SID. https://sid.ir/paper/54700/en

Vancouver: Copy

YASINI E., PAHLAVAN A., MIRZAEI MANSOUREH, HASANI TABATABAEI MASOUMEH, ARAMI SAKINEH, KERMANSHAH H., MAJD M.. EFFECT OF THERMAL AND MECHANICAL LOAD CYCLING ON MICROLEAKAGE OF PACKABLE COMPOSITE RESIN. JOURNAL OF IRANIAN DENTAL ASSOCIATION (JIDA) (MAJALLAH-I-DANDANPIZISHKI)[Internet]. 2010;22(1 (74)):17-22. Available from: https://sid.ir/paper/54700/en

IEEE: Copy

E. YASINI, A. PAHLAVAN, MANSOUREH MIRZAEI, MASOUMEH HASANI TABATABAEI, SAKINEH ARAMI, H. KERMANSHAH, and M. MAJD, “EFFECT OF THERMAL AND MECHANICAL LOAD CYCLING ON MICROLEAKAGE OF PACKABLE COMPOSITE RESIN,” JOURNAL OF IRANIAN DENTAL ASSOCIATION (JIDA) (MAJALLAH-I-DANDANPIZISHKI), vol. 22, no. 1 (74), pp. 17–22, 2010, [Online]. Available: https://sid.ir/paper/54700/en

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