THE STUDY OF SHEAR BOND STRENGTH OF CORE MAX II® TO BOVINE DENTINE (IN VITRO)

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ASEFZADEH F.; GOLABGIRAN M.M.

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Journal: DANESHVAR MEDICINE Year:2006 | Volume:13 | Issue:64 Page(s): 1-6

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Title

THE STUDY OF SHEAR BOND STRENGTH OF CORE MAX II® TO BOVINE DENTINE (IN VITRO)

Author(s)

ASEFZADEH F. | GOLABGIRAN M.M. | Issue Writer Certificate

Keywords

BONDING AGENTQ3

ADHESIVE RESINQ3

SHEAR BOND STRENGTHQ3

CORE MAX II®Q3

PARA CORE®Q3

Abstract

Purpose: The aim of this study was to investigate the SHEAR BOND STRENGTH of CORE MAX II® to bovine dentine. Materials and Method: For this purpose 60 sound permanent bovine incisors were gathered and divided into 4 groups of 15.After measuring the buccal enamel by means of radiography, the teeth were embedded in self-cure acrylic blocks. Then the depth gauges were prepared in the buccal side of teeth with straight diamond burs by high-speed hand piece. Next, the buccal enamel was grinded with a model trimmer to reach the specified depth into dentine. Dentine surfaces were polished with voco® composite polishing discs by low speed hand pieces and copious water to obtain a smooth surface free of irregularities. Group 1: In this group CORE MAX II® was directly bonded to bovine dentine.Group 2: CORE MAX II® was bonded to bovine dentine etched with 35 % phosphoric acid.Group 3: CORE MAX II® was bonded to etched bovine dentine by means of a self-cure dentine BONDING AGENT.Group 4: (control group): Para Core was bonded to bovine dentin, which was etched and bonded as. After storing the specimens mentioned before in tap water, they were thermo Scientific-Research Journal I cycled for 500 times between55° & 5°c and were placed under universal testing machine INSTRON 1195 for shear bond testing.Results: The results were as follows: 1. The SHEAR BOND STRENGTH of CORE MAX II® to bovine dentine was zero and none of the specimens bonded to dentine. 2. Etching bovine dentine slightly increased the SHEAR BOND STRENGTH (1.27 Map) that although it was significantly higher than the first group, it could not be relied on for proper bonding.1. Application of bonding on etched dentine provided the highest bond strength (10.12 Mpa). 2. The bond strength of PARA CORE® to etched and bonded dentine was significantly lower than the third group (5.95 Mpa).Conclusion: Thus, in the light of the above - mentioned evidences and results, It can be concluded that CORE MAX II® cannot bond itself to unprepared dentine and it is imperative to use etching and bonding in order to obtain a good bond strength. Moreover, the other finding of this study was the mean thickness of bovine enamel, which was 1.2 mm in mid-buccal and 1.07 in gingival third and 1.05 in incisor third.

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APA: Copy

ASEFZADEH, F., & GOLABGIRAN, M.M.. (2006). THE STUDY OF SHEAR BOND STRENGTH OF CORE MAX II® TO BOVINE DENTINE (IN VITRO). DANESHVAR MEDICINE, 13(64), 1-6. SID. https://sid.ir/paper/30923/en

Vancouver: Copy

ASEFZADEH F., GOLABGIRAN M.M.. THE STUDY OF SHEAR BOND STRENGTH OF CORE MAX II® TO BOVINE DENTINE (IN VITRO). DANESHVAR MEDICINE[Internet]. 2006;13(64):1-6. Available from: https://sid.ir/paper/30923/en

IEEE: Copy

F. ASEFZADEH, and M.M. GOLABGIRAN, “THE STUDY OF SHEAR BOND STRENGTH OF CORE MAX II® TO BOVINE DENTINE (IN VITRO),” DANESHVAR MEDICINE, vol. 13, no. 64, pp. 1–6, 2006, [Online]. Available: https://sid.ir/paper/30923/en

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