CAD/CAM과MAD/MAM 시스템으로 제작된 3-unit 지르코니아 고정성 국소의치의 변연 적합도에 관한 연구
Marginal fit of three-unit zirconia anterior fixed dental prostheses fabricated using CAD/CAM and MAD/MAM system
2
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
연구 목적: 본 연구의 목적은CAD/CAM과MAD/MAM 시스템으로 제작된 3-unit 지르코니아 고정성 국소의치의 변연 적합도를 통상적인 방법으로 제작된 금속-도재 고정성 국소의치와 비교 분석하는 것이다. 연구 재료 및 방법: 레진 치아 (상악 중절치와 측절치)를 전부 도재관을 위한 형태로 삭제하고, 이를 인상 채득하여 에폭시 레진 모형을 제작하였다. 이 모형상에서 금속-도재 고정성 국소의치, CAD/CAM 지르코니아 고정성 국소의치 (Everest®, Kavo Dental GmbH, Biberach, Germany), MAD/MAM 지르코니아 고정성 국소의치 (Rainbow™, Dentium Co. Inc., Seoul, South Korea)를각각5개씩 제작하였다. 제작된 고정성 국소의치를 레진 모형에 접착하고, 가공치 부위를 절단하여, 각각 광학 현미경 (Presize 440C)을 이용, 145 배율로 변연 간격을 측정하였다. 측정된 결과는 one-way ANOVA test로 분석하였고, Duncan test로 사후 검정하였다 (α= .05). 결과: 각 군의 변연 간격의 평균과 표준편차는 금속-도재 고정성 국소의치 78.48 ±11.05 ㎛, Everest® 시스템 59.30 ±11.63 ㎛, Rainbow™ 시스템70.34 ±13.98 ㎛로 측정되었다. 결론: 1. Everest® 시스템이 금속-도재 고정성 국소의치보다 변연 간격이 작은 것으로 측정되었다 (P<.05). 2. Everest® 시스템과 Rainbow™ 시스템간의 변연 적합도는 유의성 있는 차이를 보이지 않았다 (P>.05). 3. Rainbow™ 시스템은 금속-도재 고정성 국소의치와 변연 간격에 유의 차가 없었다 (P>.05). 4. 각 군의 평균 변연 간격이 임상적으로 적합한 범위 내에 (120 ㎛) 있었다.
Abstract
Purpose: The purpose of this study was to compare the marginal fit of three-unit zirconia fixed dental prostheses (FDPs) fabricated using CAD/CAM and MAD/MAM system. Materials and methods: Dentiform maxillary central and lateral incisor were prepared for 3-unit FDP and fixed in yellow stone. This model was duplicated to epoxy resin die. On the resin die, fifteen 3-unit FDPs were fabricated. Metal-ceramic group was three-unit metal-ceramic FDPs, Everest® group was zirconia three-unit FDPs fabricated using the Everest® system (Kavo Dental GmbH, Biberach, Germany) and Rainbow™ group was zirconia three-unit FDPs fabricated using the Rainbow™ system (Dentium Co. Inc., Seoul, South Korea). They were cemented to resin dies with adhesive resin cement. After removing pontics, each retainers were separated and observed under measuring machine (Presize 440C) and analyzed through one-way ANOVA and Duncan test (α= .05). Results: Mean values and standard deviations of marginal gap dimensions in each group for three-unit FDPs were 78.5 ± 11.05 ㎛ for the metal-ceramic group, 59.30 ± 11.63 ㎛ for the Everest® group and 70.34 ± 13.98 ㎛ for the Rainbow™ group. Conclusion: 1. The Everest® group in comparison with metal-ceramic group showed better marginal fit, which had significant differences (P<.05). 2. The mean marginal gap values between Everest® and Rainbow™ group did not showed significant differences (P>.05). 3. The mean marginal gap values between Rainbow™ group and metal-ceramic group did not showed significant differences (P>.05). 4. The mean marginal gaps of each group were within clinically acceptable range (120 ㎛).
참고문헌 (26)
- Sorensen JA, "A rationale for comparison of plaque-retaining properties of crown systems", J Prosthet Dent, 62, pp.264~269 (1989)
- Sorensen SE, "Gingival and alveolar bone reaction to marginal fit of subgingival crown margins", Scand J Dent Res, 94, pp.109~114 (1986)
- Tinschert J, "Marginal fit of alumina-and zirconia-based fixed partial dentures produced by a CAD", CAM system, 2001, pp.26, 367~374
- Reich S, "Clinical fit of allceramic three-unit fixed partial dentures, generated with three different CAD", CAM systems, 2005, pp.113, 174~179
- 강동림, "MAD", MAM을 이용한 치과용 지르코니아 코어의 변연 적합도, 2010, pp.48(01), 1~7[DOI]
- McLean JW, "The estimation of cement film thickness by an in vivo technique", Br Dent J, 131, pp.107~111 (1971)
- Belser UC, "Fit of three porcelain-fused-to-metal marginal designs in vivo: a scanning electron microscope study", J Prosthet Dent, 53, pp.24~29 (1985)
- Coli P, "Precision of a CAD", CAM technique for the production of zirconium dioxide copings, 2004, pp.17, 577~580
- Beuer F, "Precision of fit: zirconia three-unit fixed dental prostheses", Clin Oral Investig, 13, pp.343~349 (2009)
- Sailer I, "Five-year clinical results of zirconia frameworks for posterior fixed partial dentures", Int J Prosthodont, 20, pp.383~388 (2007)
- Sailer I, "Prospective clinical study of zirconia posterior fixed partial dentures: 3-year follow-up", Quintessence Int, 37, pp.685~693 (2006)
- Wettstein F, "Clinical study of the internal gaps of zirconia and metal frameworks for fixed partial dentures", Eur J Oral Sci, 116, pp.272~279 (2008)
- Sorensen JA, "A standardized method for determination of crown margin fidelity", J Prosthet Dent, 64, pp.18~24 (1990)
- Moon BH, "A study on the marginal fit of all-ceramic crown using CCD camera", J Korean Acad Prosthodont, 36, pp.273~292 (1998)
- Gassino G, "Marginal adaptation of fixed prosthodontics: a new in vitro 360- degree external examination procedure", Int J Prosthodont, 17, pp.218~223 (2004)
- Groten M, "Determination of the minimum number of marginal gap measurements required for practical in-vitro testing", J Prosthet Dent, 83, pp.40~49 (2000)
- 윤종욱, "A study on the marginal fit of collarless metal ceramic fixed partial dentures", 대한치과보철학회지, 43(6), pp.707~716 (2005), 대한치과보철학회
- Vigolo P, "An in vitro evaluation of fit of zirconium-oxidebased ceramic four-unit fixed partial dentures, generated with three different CAD", CAM systems, before and after porcelain firing cycles and after glaze cycles, 2008, pp.17, 621~626
- Gonzalo E, "Comparative analysis of two measurement methods for marginal fit in metalceramic and zirconia posterior FPDs", Int J Prosthodont, 22, pp.374~377 (2009)
- Rosentritt M, "Marginal integrity of CAD", CAM fixed partial dentures, 2007, pp.1, 25~30
- Kohorst P, "Influence of the veneering process on the marginal fit of zirconia fixed dental prostheses", J Oral Rehabil, 37, pp.283~291 (2010)
- 신호식, "두 종류의 CAD", CAM 지르코니아 전부도재관의 도재 축성 전후의 변연적합도 비교, 2008, pp.46(5), 528~534[DOI]
- 허중보, "수종의CAD", CAM 시스템으로 제작한 지르코니아 코어에서 Replica Technique을 이용한 변연 및 내면 적합도 평가, 2010, pp.48(02), 135~142[DOI]
- Belles DM, "Effect of metal design and technique on the marginal characteristics of the collarless metal ceramic restoration", J Prosthet Dent, 65, pp.611~619 (1991)
- Bindl A, "Marginal and internal fit of all-ceramic CAD", CAM crown-copings on chamfer preparations, 2005, pp.32, 441~447
- Witkowski S, "Marginal accuracy of titanium copings fabricated by casting and CAD", CAM techniques, 2006, pp.96, 47~52