The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지

A STUDY ON THE ABRASION RESISTANCE AND SURFACE ROUGHNESS OF THE DENTAL STONES

수종 치과용 석고의 마모저항도 및 표면조도에 관한 비교 연구

  • Shim, Hye-Won (Research Institute of Oral Science, College of Dentistry, Kangnung National University) ;
  • Yi, Yang-Jin (Research Institute of Oral Science, College of Dentistry, Kangnung National University) ;
  • Cho, Lee-Ra (Research Institute of Oral Science, College of Dentistry, Kangnung National University) ;
  • Chung, Kyung-Ho (Dept. of Polymer Engineering, University of Suwon) ;
  • Kim, Kyoung-Nam (Research Institute of Dental Materials, College of Dentistry, Yonsei University)
  • 심혜원 (강릉대학교 구강과학연구소) ;
  • 이양진 (강릉대학교 구강과학연구소) ;
  • 조리라 (강릉대학교 구강과학연구소) ;
  • 정경호 (수원대학교 공과대학 고분자.화학공학부) ;
  • 김경남 (연세대학교 치과대학 치과재료학연구소)
  • Published : 2002.04.01
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Abstract

The purpose of this study was to investigate the abrasion resistance and surface roughness of conventional dental stones and improved dental stones and newly developed dental stones. Materials included in this study were several dental stones and newly developed dental stone; 2 type III. 6 type IV (including newly developed dental stone). 1 type V Ten specimens for each material, total ninety specimens were made. Each specimen was subjected to 50 complete cycle abrasion under constant load 0.42N at speed or 6mm per sec. The depth after abrasion test was measured for each specimen. Surface roughness before and after abrasion test was compared. The results were as follows ; 1. The resin containing die materials such as Tuff Rock and Resin Rock had superior abrasion resistance. 2. Type IV, V dental stone exhibited greater abrasion resistance than Type III dental stone. 3. The results or the surface roughness showed similar pattern with the abrasion resistance.

Keywords

References

  1. American Dental Association. Specification No. 25 for dental gypsum products In: Certification program for dental materials. Chicago: American Dental Association: 1990: p.1-14
  2. Peyton FA, Leibld JP, Ridgley GV. Surface hardness, compressive strength and abrasion resistance of indirect die stone. J Prosthet Dent 1952:2:381-389
  3. Schwedhelm ER. Lepe X. Fracture strength of Type IV and Type V die stone as a function of time. J Prosthet Dent 1997:78:554-559
  4. Paquette JM, Taniguchi T, White SN. Dimensional accuracy of an epoxy resin die material using two setting methods. J Prosthet Dent 2000:83:301-305
  5. Ragain JC, Grosko ML, Raj M, et al. Detail reproduction. contact angles. and die hardness of elastomeric impression and gypsum die material combinations. Int J Prosthodont 2000:13:214-220
  6. Duke PD, Moore BK, Haug SP, Andres CJ. Study of the physical properties of type IV gypsum, resin-containing and epoxy die materials. J Prosthet Dent 2000:83:466-473
  7. Toreskog S, Phillips RW, Schnell RJ. Properties of die material : A comparative study. J Prosthet Dent 1996: 16: 119-131
  8. Hardison JD, Mithell RJ. Mold inversion and abrasion resistance of a type IV stone. Dent Mater 1989:5:66-70
  9. Nomura GT, Reisbick MH, Preston JD. An investigation of epoxy resin dies. J Prosthet Dent 1980:44:45-50
  10. Vermilyea SG, HYget LF, Wiskoski J. Evaluation of resin die materials. J Prosthet Dent 1979 :42: 304-307
  11. Moser JB, Stone DG, Willougby GM. Properties of a resin die material. J Prosthet Dent 1975:34:297-304
  12. Chaffee HR. Bailey JH. Sherrad DJ. Dimensional accuracy of improved dental stone. epoxy resin die materials Part II : Complete arch form. J Prosthet Dent 1997: 77: 235-238
  13. Fukui H. Lacy AM, Jenderseb MD. Effectiveness of hardening film on die stone. J Prosthet Dent 1980:44:57-63
  14. Sanad MEE. Combe EC, Grant AA. The Effect of model sealant solutions on the properties of gypsum. J Dent 1980:8: 152-157
  15. Fan P.L. Powers JM, Reid BC. Surface mechanical properties of stone, resin, and metal dies. JADA 1981:103:408-411
  16. Sanad MEE, Combe EC, Grant EC. Hardening of model and die materials by epoxy die resin. J Dent 1980:8:158-162
  17. Baily JH. Donovan TE, Preston JD. The dimensional accuracy of improved dental stone, silver plated, and epoxy resin die materials. J Prosthet Dent 1980:59:307-310
  18. Craig RG. Restorative dental materials. ninth edition. 1993, USA, Mosby
  19. Williams GJ, Wild S, Bates JF. A Study of some factors affecting the surface properties of dental stones. Br Dent J 1984:156:46-53
  20. Keuter FMS, Davidson CL. Surface roughness of dental stone casts from alginate impression. J Dent 1986:14:23-28
  21. Nanami T, Ostlund SG. Surface texture of stone model setting against elastomer impression material. Swed Dent J 1984: 8:251-255.