A COMPARISON OF FRACTURE RESISTANCE OF ZIRCONIA COPINGS MADE WITH CAD/CAM TECHNOLOGY AND SLIP CASTING TECHNIQUE

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TORABI K.; AHANGARI A.H.; SALEHI S.; MOTAMEDI M.

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Title

A COMPARISON OF FRACTURE RESISTANCE OF ZIRCONIA COPINGS MADE WITH CAD/CAM TECHNOLOGY AND SLIP CASTING TECHNIQUE

Author(s)

TORABI K. | AHANGARI A.H. | SALEHI S. | MOTAMEDI M. | Issue Writer Certificate

Keywords

ZIRCONIA COPINGQ1

CAD/CAMQ1

SLIP CASTINGQ1

Abstract

Statement of Problem: Zirconia has been introduced as an appropriate structure for fabricating metal free copings. A major advantage of such restorations is esthetic concerns; however, due to its high strength, zirconia can also be used in posterior areas. One of the recent methods of making these restorations is CAD/CAM machines.Purpose: This study aimed to evaluate the fracture resistance of ZIRCONIA COPINGs fabricated by two methods, CAD/CAM and SLIP CASTING.Materials and Method: 32 brass dies were fabricated for this study and divided into two groups of 16 dies each. ZIRCONIA COPINGs were made by CAD/CAM machine for one group and by SLIP CASTING method for the other. The copings were cemented to dies by a resin-modified glass ionomer (GC plus). A hardened steel ball with a diameter of 5 mm was used to apply the load to the copings in the long axis of the dies at a crosshead speed of 0.5 mm/min. Then the amount of force needed to fracture each coping was recorded. Independent Sample T-test was used to compare the two groups.Results: The average of fracture resistance for the CAD/CAM group was 1411±424 N and for the slip cast group it was 1542±412 N, having no significant difference (p>0.05).Conclusion: ZIRCONIA COPINGs made by CAD/CAM and SLIP CASTING methods have no significant difference in fracture resistance.

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APA: Copy

TORABI, K., AHANGARI, A.H., SALEHI, S., & MOTAMEDI, M.. (2012). A COMPARISON OF FRACTURE RESISTANCE OF ZIRCONIA COPINGS MADE WITH CAD/CAM TECHNOLOGY AND SLIP CASTING TECHNIQUE. JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES), 12(4 (33)), 327-333. SID. https://sid.ir/paper/108602/en

Vancouver: Copy

TORABI K., AHANGARI A.H., SALEHI S., MOTAMEDI M.. A COMPARISON OF FRACTURE RESISTANCE OF ZIRCONIA COPINGS MADE WITH CAD/CAM TECHNOLOGY AND SLIP CASTING TECHNIQUE. JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES)[Internet]. 2012;12(4 (33)):327-333. Available from: https://sid.ir/paper/108602/en

IEEE: Copy

K. TORABI, A.H. AHANGARI, S. SALEHI, and M. MOTAMEDI, “A COMPARISON OF FRACTURE RESISTANCE OF ZIRCONIA COPINGS MADE WITH CAD/CAM TECHNOLOGY AND SLIP CASTING TECHNIQUE,” JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES), vol. 12, no. 4 (33), pp. 327–333, 2012, [Online]. Available: https://sid.ir/paper/108602/en

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