Comparison of three-dimensional digital technique with twodimensional replica method for measuring marginal and internal fit of full coverage restorations
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PURPOSE. This study compared digital (reference point matching) and replica methods for measuring marginal and internal fit of full coverage restorations. MATERIALS AND METHODS. A maxillary left first molar typodent was fixed on to an aluminum base and prepared to receive all-ceramic full coverage restoration. The model was scanned with an intraoral scanner (CEREC Omnicam, Sirona, York, PA, USA). Twelve crowns were fabricated from lithium disilicate blocks (IPS emax CAD, Ivoclar Vivadent) and then crystalized. Marginal and internal fit of each restoration was measured by two examiners using replica and a new digital three-dimensional technique. Reliability between the two methods and two examiners was assessed by correlation and Cronbach’s Alpha coefficient (P<.05). A Bland-Altman assessment for agreement was used to compare the two methods. RESULTS. Bland-Altman assessment showed that the mean of difference for marginal, absolute marginal, and axial gap was respectively -1.04 μm, -41.9 μm, and -29.53 μm with limit of agreement (LOA) between -37.26 to 35.18 μm for marginal, -105.85 to 22.05 μm for absolute marginal and -80.52 to 22.02 μm for axial gap. Positive correlation for repeatability (P<.05) in determining marginal and internal gaps by the two examiners in both techniques was revealed. Reliability of both techniques in all sites of measurements was at least good (0.8 ≤ α < 0.9). CONCLUSION. Both measuring techniques appeared highly reliable for evaluating fit of fixed dental restorations, while reference point matching provided higher values in axial and absolute marginal gap assessment.
Abstract
PURPOSE. This study compared digital (reference point matching) and replica methods for measuring marginal and internal fit of full coverage restorations. MATERIALS AND METHODS. A maxillary left first molar typodent was fixed on to an aluminum base and prepared to receive all-ceramic full coverage restoration. The model was scanned with an intraoral scanner (CEREC Omnicam, Sirona, York, PA, USA). Twelve crowns were fabricated from lithium disilicate blocks (IPS emax CAD, Ivoclar Vivadent) and then crystalized. Marginal and internal fit of each restoration was measured by two examiners using replica and a new digital three-dimensional technique. Reliability between the two methods and two examiners was assessed by correlation and Cronbach’s Alpha coefficient (P<.05). A Bland-Altman assessment for agreement was used to compare the two methods. RESULTS. Bland-Altman assessment showed that the mean of difference for marginal, absolute marginal, and axial gap was respectively -1.04 μm, -41.9 μm, and -29.53 μm with limit of agreement (LOA) between -37.26 to 35.18 μm for marginal, -105.85 to 22.05 μm for absolute marginal and -80.52 to 22.02 μm for axial gap. Positive correlation for repeatability (P<.05) in determining marginal and internal gaps by the two examiners in both techniques was revealed. Reliability of both techniques in all sites of measurements was at least good (0.8 ≤ α < 0.9). CONCLUSION. Both measuring techniques appeared highly reliable for evaluating fit of fixed dental restorations, while reference point matching provided higher values in axial and absolute marginal gap assessment.
참고문헌 (37)
- Beuer F, "Precision of fit : zirconia three-unit fixed dental prostheses", Clin Oral Investig, 13, pp.343~349 (2009)
- Raigrodski AJ, "The efficacy of posterior three-unit zirconium-oxide-based ceramic fixed partial dental prostheses : a prospective clinical pilot study", J Prosthet Dent, 96, pp.237~244 (2006)
- Att W, "Marginal adaptation of three different zirconium dioxide three-unit fixed dental prostheses", J Prosthet Dent, 101, pp.239~247 (2009)
- Kohorst P, "Marginal accuracy of four-unit zirconia fixed dental prostheses fabricated using different computer-aided design", computer-aided manufacturing systems, 2009, pp.117, 319~325
- Christensen GJ, "Marginal fit of gold inlay castings", J Prosthet Dent, 16, pp.297~305 (1966)
- 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)
- Euán R, "Comparison of the marginal adaptation of zirconium dioxide crowns in preparations with two different finish lines", J Prosthodont, 21, pp.291~295 (2012)
- McLean JW, "The estimation of cement film thickness by an in vivo technique", Br Dent J, 131, pp.107~111 (1971)
- Anadioti E, "Internal fit of pressed and computer-aided design", computer-aided manufacturing ceramic crowns made from digital and conventional impressions, 2015, pp.113, 304~309
- Tuntiprawon M, "The effect of cement thickness on the fracture strength of all-ceramic crowns", Aust Dent J, 40, pp.17~21 (1995)
- May KB, "Precision of fit : the Procera AllCeram crown", J Prosthet Dent, 80, pp.394~404 (1998)
- 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)
- Abdel-Azim T, "Comparison of the marginal fit of lithium disilicate crowns fabricated with CAD", CAM technology by using conventional impressions and two intraoral digital scanners, 2015, pp.114, 554~559
- Nawafleh NA, "Accuracy and reliability of methods to measure marginal adaptation of crowns and FDPs : a literature review", J Prosthodont, 22, pp.419~428 (2013)
- 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)
- Falk A, "Reliability of the impression replica technique", Int J Prosthodont, 28, pp.179~180 (2015)
- Weaver JD, "Marginal adaptation of castable ceramic crowns", J Prosthet Dent, 66, pp.747~753 (1991)
- Koulivand S, "A clinical comparison of digital and conventional impression techniques regarding finish line locations and impression time", J Esthet Restor Dent, 32, pp.236~243 (2020)
- Boitelle P, "Evaluation of the marginal fit of CAD-CAM zirconia copings : Comparison of 2D and 3D measurement methods", J Prosthet Dent, 119, pp.75~81 (2018)
- Orteu JJ, "3-D computer vision in experimental mechanics", Opt Laser Eng, 47, pp.282~291 (2009)
- Belongie S, "Shape context: A new descriptor for shape matching and object recognition", Adv Neur In, 24, pp.509~522 (2002)
- Holmes JR, "Considerations in measurement of marginal fit", J Prosthet Dent, 62, pp.405~408 (1989)
- 곽상규, "Statistical data preparation: management of missing values and outliers", Korean Journal of Anesthesiology, 70(4), pp.407~411 (2017), 대한마취통증의학회
- Cortina JM, "What is coefficient alpha? An examination of theory and applications", J Appl Psycho, 78, pp.98~104 (1993)
- 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)
- 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)
- Son K, "A comparison study of marginal and internal fit assessment methods for fixed dental prostheses", J Clin Med, 8, pp.E785~ (2019)
- de Almeida IG, "CAD", CAM system influence marginal fit of different ceramic types?, 2019, pp.30, 127~129
- Al Hamad KQ, "Comparison of the accuracy of fit of metal, zirconia, and lithium disilicate crowns made from different manufacturing techniques", J Prosthodont, 28, pp.497~503 (2019)
- De Freitas BN, "Adaptation accuracy of milled lithium disilicate crowns : A 2D and 3D microCT analysis", J Esthet Restor Dent, 32, pp.403~409 (2020)
- Sadid-Zadeh R, "Effect of fabrication technique on the marginal discrepancy and resistance of lithium disilicate crowns : An in vitro study", J Prosthodont, 28, pp.1005~1010 (2019)
- Haddadi Y, "Accuracy of crowns based on digital intraoral scanning compared to conventional impression-a split-mouth randomised clinical study", Clin Oral Investig, 23, pp.4043~4050 (2019)
- Elrashid AH, "Stereomicroscopic evaluation of marginal fit of E.max press and E.max computer-aided design and computer-assisted manufacturing lithium disilicate ceramic crowns:An in vitro study", J Int Soc Prev Community Dent, 9, pp.178~184 (2019)
- Colpani JT, "Evaluation of marginal and internal fit of ceramic crown copings", Dent Mater, 29, pp.174~180 (2013)
- Oka Y, "Fabrication of a radiopaque fit-testing material to evaluate the three-dimensional accuracy of dental prostheses", Dent Mater, 32, pp.921~928 (2016)
- Schaefer O, "Effect of CNC-milling on the marginal and internal fit of dental ceramics : a pilot study", Dent Mater, 29, pp.851~858 (2013)
- Park JM, "Digital technique for in vivo assessment of internal and marginal fit of fixed dental prostheses", J Prosthet Dent, 118, pp.452~454 (2017)