Assessment of the fit of zirconia-based prostheses fabricated with two different scan methods
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Purpose: This research was conducted to compare the marginal and internal fit of zirconia prostheses fabricated with the model scan method and the intraoral scan method. Materials and methods: In this study, 20 extracted human mandibular first molar was used in the preparation of abutment tooth for the fabrication of zirconia prostheses. In the first group, the model scan method was applied on 10 prepared teeth. In the other group, the intraoral scan method was used on other 10 prepared teeth. Datum of both groups were transmitted to the software system. Afterwards, 20 zirconia prostheses were fabricated using the Ceramill system. Weight technique was used to evaluate the internal gap of the zirconia prostheses. In the Replica technique, marginal gap of the zirconia prostheses were analyzed by optical microscopy. Statistical analysis was based on one-way ANOVA. Results: Model scan group showed lower average weight than intraoral scan group when weight technique was applied, which has significance (P < .05). Also, model scan group showed significantly lower figures in all 5 measurements of replica technique than intraoral scan group (P < .05). Conclusion: Zirconia prostheses of both groups demonstrated clinically acceptable margin and internal fit. However, model scanned zirconia prostheses showed higher marginal and internal fit than intraoral scanned crowns.
Abstract
Purpose: This research was conducted to compare the marginal and internal fit of zirconia prostheses fabricated with the model scan method and the intraoral scan method. Materials and methods: In this study, 20 extracted human mandibular first molar was used in the preparation of abutment tooth for the fabrication of zirconia prostheses. In the first group, the model scan method was applied on 10 prepared teeth. In the other group, the intraoral scan method was used on other 10 prepared teeth. Datum of both groups were transmitted to the software system. Afterwards, 20 zirconia prostheses were fabricated using the Ceramill system. Weight technique was used to evaluate the internal gap of the zirconia prostheses. In the Replica technique, marginal gap of the zirconia prostheses were analyzed by optical microscopy. Statistical analysis was based on one-way ANOVA. Results: Model scan group showed lower average weight than intraoral scan group when weight technique was applied, which has significance (P < .05). Also, model scan group showed significantly lower figures in all 5 measurements of replica technique than intraoral scan group (P < .05). Conclusion: Zirconia prostheses of both groups demonstrated clinically acceptable margin and internal fit. However, model scanned zirconia prostheses showed higher marginal and internal fit than intraoral scanned crowns.
참고문헌 (34)
- Conrad HJ, "Current ceramic materials and systems with clinical recommendations: a systematic review", J Prosthet Dent, 98, pp.389~404 (2007)
- Martlnez-Rus F, "Evaluation of the absolute marginal discrepancy of zirconia-based ceramic copings", J Prosthet Dent, 105, pp.108~114 (2011)
- Patzelt SB, "The time efficiency of intraoral scanners: an in vitro comparative study", J Am Dent Assoc, 145, pp.542~551 (2014)
- 조영범, "서로 다른 스캔 방식을 이용하여 CAD", CAM에 의해제작된 코핑의 변연 및 내면의 적합성, 2013, pp.29(4), 366~376[DOI]
- Jacobs MS, "An investigation of dental luting cement solubility as a function of the marginal gap", J Prosthet Dent, 65, pp.436~442 (1991)
- Felton DA, "Effect of in vivo crown margin discrepancies on periodontal health", J Prosthet Dent, 65, pp.357~364 (1991)
- Holden JE, "Comparison of the marginal fit of pressable ceramic to metal ceramic restorations", J Prosthodont, 18, pp.645~648 (2009)
- Quintas AF, "Vertical marginal discrepancy of ceramic copings with different ceramic materials, finish lines, and luting agents: an in vitro evaluation", J Prosthet Dent, 92, pp.250~257 (2004)
- Tan PL, "An in vitro comparison of vertical marginal gaps of CAD", CAM titanium and conventional cast restorations, 2008, pp.17, 378~383
- Pera P, "In vitro marginal adaptation of alumina porcelain ceramic crowns", J Prosthet Dent, 72, pp.585~590 (1994)
- Kohorst P, "Influence of the veneering process on the marginal fit of zirconia fixed dental prostheses", J Oral Rehabil, 37, pp.283~291 (2010)
- Stappert CF, "Marginal adaptation of three-unit fixed partial dentures constructed from pressed ceramic systems", Br Dent J, 196, pp.766~770 (2004)
- Wolfart S, "Clinical evaluation of marginal fit of a new experimental all-ceramic system before and after cementation", Int J Prosthodont, 16, pp.587~592 (2003)
- Balkaya MC, "Influence of firing cycles on the margin distortion of 3 all-ceramic crown systems", J Prosthet Dent, 93, pp.346~355 (2005)
- Fonseca JC, "Stressrelieving and porcelain firing cycle influence on marginal fit of commercially pure titanium and titanium-aluminum-vanadium copings", Dent Mater, 19, pp.686~691 (2003)
- 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)
- Gonzalo E, "A comparison of the marginal vertical discrepancies of zirconium and metal ceramic posterior fixed dental prostheses before and after cementation", J Prosthet Dent, 102, pp.378~384 (2009)
- Valderrama S, "A comparison of the marginal and internal adaptation of titanium and gold-platinum-palladium metal ceramic crowns", Int J Prosthodont, 8, pp.29~37 (1995)
- Baig MR, "Evaluation of the marginal fit of a zirconia ceramic computer-aided machined (CAM) crown system", J Prosthet Dent, 104, pp.216~227 (2010)
- Han HS, "Marginal accuracy and internal fit of machine-milled and cast titanium crowns", J Prosthet Dent, 106, pp.191~197 (2011)
- Reich S, "Clinical fit of allceramic three-unit fixed partial dentures, generated with three different CAD", CAM systems, 2005, pp.113, 174~179
- Jesus Suarez M, "Marginal fit of titanium metal-ceramic crowns", Int J Prosthodont, 18, pp.390~391 (2005)
- Castillo de Oyagüe R, "Influence of CAM vs. CAD", CAM scanning methods and finish line of tooth preparation in the vertical misfit of zirconia bridge structures, 2009, pp.22, 79~83
- Holmes JR, "Considerations in measurement of marginal fit", J Prosthet Dent, 62, pp.405~408 (1989)
- Flügge TV, "Precision of intraoral digital dental impressions with iTero and extraoral digitization with the iTero and a model scanner", Am J Orthod Dentofacial Orthop, 144, pp.471~478 (2013)
- Vojdani M, "Comparison the marginal and internal fit of metal copings cast from wax patterns fabricated by CAD", CAM and conventional wax up techniques, 2013, pp.14, 118~129
- McLean JW, "The estimation of cement film thickness by an in vivo technique", Br Dent J, 131, pp.107~111 (1971)
- Fransson B, "The fit of metal-ceramic crowns, a clinical study", Dent Mater, 1, pp.197~199 (1985)
- Moldovan O, "Internal and external fit of CAM-made zirconia bridge frameworksa pilot study", Dtsch Zahnärztl Z, 61, pp.38~42 (2006)
- Sakrana AA, "In vitro evaluation of the marginal and internal discrepancies of different esthetic restorations", J Appl Oral Sci, 21, pp.575~580 (2013)
- Sorensen JA, "A standardized method for determination of crown margin fidelity", J Prosthet Dent, 64, pp.18~24 (1990)
- Molin M, "The fit of gold inlays and three ceramic inlay systems. A clinical and in vitro study", Acta Odontol Scand, 51, pp.201~206 (1993)
- Kokubo Y, "Clinical marginal and internal gaps of In-Ceram crowns fabricated using the GN-I system", J Oral Rehabil, 32, pp.753~758 (2005)
- Colpani JT, "Evaluation of marginal and internal fit of ceramic crown copings", Dent Mater, 29, pp.174~180 (2013)