The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Comparison of the retention of the full veneer casted gold crowns with varying convergence angle, crown length and dental cements

수렴각과 치관 길이를 달리한 금속 다이상에서 치과용 시멘트 합착 후 전부주조관의 유지력 비교

  • Yun, Jung-Ho (Department of Prosthodontics, Graduate School, Yonsei University) ;
  • Cho, Jin-Hyung (Department of Prosthodontics, Graduate School, Yonsei University) ;
  • Kim, Jee-Hwan (Department of Prosthodontics, Graduate School, Yonsei University) ;
  • Lee, Keun-Woo (Department of Prosthodontics, Graduate School, Yonsei University)
  • 윤중호 (연세대학교 치과대학 치과보철학교실) ;
  • 조진형 (연세대학교 치과대학 치과보철학교실) ;
  • 김지환 (연세대학교 치과대학 치과보철학교실) ;
  • 이근우 (연세대학교 치과대학 치과보철학교실)
  • Received : 2013.03.13
  • Accepted : 2013.04.23
  • Published : 2013.04.30
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Abstract

Purpose: The aim of this research was to establish the effect and variation in differing convergence angle and length of abutment on the retention of full veneer casted gold crown. Materials and methods: Two different length,5 mm and 10 mm in height with convergence angles of 5, 10, 15 and 25 degrees crowns were fabricated. Cementation was done using cements; zinc phosphate cement (Fleck's zinc phosphate cement), resin-modified glass ionomer cement (Vitremer) and resin cement (Panavia 21). These were tested for tensile force at the point of separation by using Instron Universal Testing Machine. Statistical analysis was done by SAS 6.04 package. Results: In all cements the mean retention decreased with significant difference on increase of convergence angle (P<.05). Increase in every 5 degree-convergence angel the retention rate decreased with resin-modified glass ionomer cement of 15.9% and resin cement of 14.8%. With zinc phosphate cement, there was largest decreasing rate of mean retention of 25.5% between convergence angles from 5 degree to 10 degree. When the crown length increased from 5 mm to 10 mm, the retention increased with the significant difference in the same convergence angle and in all types of cement used (P<.05). Conclusion: The retention was strongly dependent on geometric factors of abutment. Much care is required in choosing cements for an optimal retention in abutments with different convergence angles and crown lengths.

연구 목적: 본 연구의 목적은 다이의 수렴각과 치관길이의 차이와 시멘트 종류의 차이가 전부주조관의 유지력에 미치는 영향을 비교한 것이다. 연구 재료 및 방법: 치관 길이 5 mm와 10 mm의 금속다이를 각각 5, 10, 15, 25도의 수렴각을 갖도록 제작한 후 전부주조관을 치과용 시멘트 중, 인산아연 시멘트(Fleck's Zinc Phosphate Cement, Mizzy Co., Cherry Hill, NJ, USA), 레진-변형 글래스 아이오노머 시멘트(Vitremer, 3M Dental Products, St, Paul, MN, USA), 레진 시멘트(Panavia 21, Kuraray Co., Osaka, Japan)로 합착하고 500회 thermocycling을 시도한 후, Instron Universal Testing Machine (Instron Corp., Canton, MA, USA)에 장착시켜, 인장력을 가하여 전부주조금관이 분리될 때 까지 인장력을 측정하여 분리되는 순간의 최대하중값(N)을 측정, 비교하였다. 통계분석은 측정된 각 군간 유지력의 상호관계를 알아보기 위하여 one-way 및 two-way ANOVA를 시행하였고 동일 길이를 가진 시멘트 군 사이에서의 수렴각 차이에 따른 영향, 다이 길이 증가에 따른 영향 및 유지력 차이를 검정하기 위해 t-test를, 수렴각 증가 에 따른 유의성을 살펴 보기 위해서는 Tukey's HSD test를 시행하였다(${\alpha}$=0.05). 결과: 동일 수렴각에서 평균 유지력은 레진 시멘트, 인산아연 시멘트, 레진-변형 글래스 아이오노머 시멘트 순으로 높게 나타났으며 모든 시멘트에서 수렴각의 증가에 따 라서 평균 유지력은 유의차를 보이면서 감소하였다(P<.05). 동일 수렴각에서 10 mm 실험군은 다이 길이 5 mm 실험군과 비교해보았을 때 길이 증가에 따른 유지력의 증가가 통계학적으로 유의차를 나타내면서 증가된 결과를 보였다. 5 mm 실험군에서 유지력은 수렴각의 변화와 시멘트의 종류, 수렴각과 시멘트의 상호영향(interaction)에서 모두 유의성 있는 차이를 보였다(P=.001). 각 시멘트 군에서의 유지력은 10 mm 길이 금속 다이의 수렴각이 증가할수록 유의한 차이를 보이면서 감소한 것으로 나타났다 (P=.0001). 결론: 임상에서 사용되고 있는 특정 치과용 시멘트의 적용시 유지력은 지대치의 기하학적 형태에 영향을 받고 있으며 서로 다른 치관 길이와 수렴각을 가지는 경우 유지 력 증가를 위해 시멘트 선택에 있어 주의가 요망된다.

Keywords

References

  1. Walton JN, Gardner FM, Agar JR. A survey of crown and fixed partial denture failures: length of service and reasons for replacement. J Prosthet Dent 1986;56:416-421. https://doi.org/10.1016/0022-3913(86)90379-3
  2. Paek SH, Chang IT, Lee SH, Yang JH, Heo SJ. A study of core type and luting cements on complete cast crown retention. J Korean Acad Prosthodont 2000;38:169-177.
  3. Jrgensen KD. The relationship between retention and convergence angle in cemented veneer crowns. Acta Odontol Scand 1955;13:35-40. https://doi.org/10.3109/00016355509028171
  4. Shillingburg H, Shillingburg HT. Fundamentals of fixed prosthodontics. 2nd ed. Chicago, Quintessence Publishing Co., 1981.
  5. Nordlander J, Weir D, Stoffer W, Ochi S. The taper of clinical preparations for fixed prosthodontics. J Prosthet Dent 1988;60:148-151. https://doi.org/10.1016/0022-3913(88)90304-6
  6. Ayad MF, Rosenstiel SF, Salama M. Influence of tooth surface roughness and type of cement on retention of complete cast crowns. J Prosthet Dent 1997;77:116-121. https://doi.org/10.1016/S0022-3913(97)70223-3
  7. Tuntiprawon M. Effect of tooth surface roughness on marginal seating and retention of complete metal crowns. J Prosthet Dent 1999;81:142-147. https://doi.org/10.1016/S0022-3913(99)70241-6
  8. Wilson AD, Kent BE. A new translucent cement for dentistry. The glass ionomer cement. Br Dent J 1972;132:133-135. https://doi.org/10.1038/sj.bdj.4802810
  9. Mathis RS, Ferracane JL. Properties of a glass-ionomer/resin-composite hybrid material. Dent Mater 1989;5:355-358. https://doi.org/10.1016/0109-5641(89)90130-9
  10. el-Mowafy OM, Fenton AH, Forrester N, Milenkovic M. Retention of metal ceramic crowns cemented with resin cements: effects of preparation taper and height. J Prosthet Dent 1996; 76:524-529. https://doi.org/10.1016/S0022-3913(96)90012-8
  11. Pameijer CH, Jefferies SR. Retentive properties and film thickness of 18 luting agents and systems. Gen Dent 1996;44:524-530.
  12. Ernst CP, Wenzl N, Stender E, Willershausen B. Retentive strengths of cast gold crowns using glass ionomer, compomer, or resin cement. J Prosthet Dent 1998;79:472-476. https://doi.org/10.1016/S0022-3913(98)70164-7
  13. Rosenstiel SF, Land MF, Crispin BJ. Dental luting agents: A review of the current literature. J Prosthet Dent 1998;80:280-301. https://doi.org/10.1016/S0022-3913(98)70128-3
  14. Black SM, Charlton G. The retention of gold crowns on human dentine preparations-a comparison of eight cements. Restorative Dent 1989;5:39-41.
  15. Caughman WF, O'Connor RP, Williams HA, Rueggeberg FA. Retention strengths of three cements using full crown preparations restored with amalgam. Am J Dent 1992;5:61-63.
  16. Gorodovsky S, Zidan O. Retentive strength, disintegration, and marginal quality of luting cements. J Prosthet Dent 1992;68: 269-274. https://doi.org/10.1016/0022-3913(92)90328-8
  17. Mojon P, Hawbolt EB, MacEntee MI, Ma PH. Early bond strength of luting cements to a precious alloy. J Dent Res 1992; 71:1633-1639. https://doi.org/10.1177/00220345920710091701
  18. Tjan AH, Li T. Seating and retention of complete crowns with a new adhesive resin cement. J Prosthet Dent 1992;67:478-483 https://doi.org/10.1016/0022-3913(92)90076-M
  19. Kanoy BE, Felton DA, White JT, Bayne C. Effects of the porcelain firing sequence on the bond strengths of cements. J Oral Rehabil 1989;16:335-343. https://doi.org/10.1111/j.1365-2842.1989.tb01349.x
  20. Oilo G. Luting cements: a review and comparison. Int Dent J 1991;41:81-88.
  21. Potts RG, Shillingburg HT Jr, Duncanson MG Jr. Retention and resistance of preparations for cast restorations. J Prosthet Dent 1980;43:303-308. https://doi.org/10.1016/0022-3913(80)90406-0
  22. Rosenstiel SF. LM, Fusimoto J. Contemporary fixed prosthodontics. 2nd ed. St. Louis, Mosby, 1995.
  23. Tylman SD. Relationship of structural design of dental bridges and their supporting tissues. Int Dent J 1963;13:303-317.
  24. Tylman SD. Theory and practice of fixed prosthodontics. 7th ed. St Louis: CV Mosby Company; 1978.
  25. Weed RM, Suddick RP, Kleffner JH. Taper of clinical and typodont crowns prepared by dental students. J Dent Res 1984;63:286.
  26. McComb D. Retention of castings with glass ionomer cement. J Prosthet Dent 1982;48:285-288. https://doi.org/10.1016/0022-3913(82)90012-9
  27. Gregory WA, Griffiths L, Irwin G. Effects of intra-core mechanical interlocks and cement type on full crown retention. Am J Dent 1991;4:29-32.
  28. Xavier CRG. Countinho M, Mondelli J. Punch strength of luting agents by punch test. J Dent Res 1997;76:451.
  29. Rubo JH, Pegoraro LF. Tensile bond strength of a composite resin cement for bonded prosthesis to various dental alloys. J Prosthet Dent 1995;74:230-234. https://doi.org/10.1016/S0022-3913(05)80128-3