Browse > Article
http://dx.doi.org/10.14347/kadt.2011.33.2.137

A study on the accuracy of zirconia copings using dental CAD / CAM system  

Yoon, Seong-Geun (Art Degital Tec Dental Lab)
Choi, Byung-Hwan (Dept. of Dental Laboratory Technology, Daegu Health College)
Publication Information
Journal of Technologic Dentistry / v.33, no.2, 2011 , pp. 137-145 More about this Journal
Abstract
Purpose: To evaluate the accuracy of zirconia copings in terms of clinical verified for the clinical application of CAD/CAM. Methods: Zirconia copings (n=5) were prepared using CAD/CAM system and were sintered using the relevant electrical induction furnace, which uses a 2h sintering program with a maximum temperature of $1500^{\circ}C$. The copings placed at the models and the interval values were measured. Results: The meas interval values between the die and the zirconia copings were $44.14{\mu}m$(A), $44.57{\mu}m$(B), $44.72{\mu}m$(C). 51.05 ${\mu}m$(D). Conclusion: The maximum interval values between the die and the zirconia copings were $51.3{\mu}m$ which is acceptable for clinical use. ${\mu}m$ Proper understanding of the test conditions will help enhancing the accuracy of zirconia coping.
Keywords
Zirconia; CAD/CAM;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Sutton WH. Microwave Processing of Ceramic Materials. Am Ceram Soc Bull, 68(2), 376-386, 1989.
2 Tinschert J, Natt G, Mautsch W, Spiekermann H, Anusavice KJ. Reliability and Properties of Ground Y-TZP-Zirconia Ceramics. J Dent Res 73, 1824-1832, 2001.
3 Campbell SD, Sozio RB. Evaluation of the fit and strength of an all-ceramic fixed partial denture. Harvard School of Dental Medicine, Boston, Mass, 59(3), 301-306, 1988.
4 Chevalier J, Drouin JM, Cal.es B. Low temperature ageing behaviour of zirconia hip joint heads. In: Sedel L, 135-137, 1977.
5 Nakamura T, Ohyama A, Imanishi A, Nakamura T, Ishigaki S. Fracture resistance of pressable glass-ceramic fixed partial dentures. J Oral Rehabil 29, 951-955, 2002.   DOI   ScienceOn
6 Sobrinho LC, Cattell MJ, Glover RH, Knowles JC. Investigation of the dry and wet fatigue propertied of three all-ceramic crown systems. Int J Prost 11, 255-262, 1998.
7 Sundh A, Sjogren G. A comparison of fracture strength of yttrium oxide- partiallystabilized zirconia ceramic crowns with varying core thickness, shapes and veneer ceramics. J O ral Rehabil 31, 682-688, 2004.   DOI   ScienceOn
8 Ardlin BI. Fracture resistance of three-unit posterior zirconium dioxide fixed partial dentures. An in vitro study. Dent Mater, 18(8), 590-595, 2002.   DOI   ScienceOn