Digital microscopic evaluation of vertical marginal discrepancies of CAD/CAM fabricated zirconia cores
-
Syed Rashid Habib
Abstract
Objective:
The aim of this in vitro research study was to evaluate the vertical marginal discrepancies of zirconia (Zr) cores fabricated by five different computer-aided design and manufacturing (CAD/CAM) systems using a digital microscope.
Materials and methods:
A total of 60 specimens were prepared and randomly divided into five groups (n=12 each) using the following systems: Ceramill Motion 2 (CM, Amanngirrbach, Germany); Weiland (WI, Ivoclar Vivadent, USA); Cerec (CS, Sirona Dental, USA); Zirkonzahn (ZZ, Gmbh Bruneck, Italy) and Cad4dent (CD, Canada). The specimens were numbered and the vertical marginal discrepancies were evaluated with a digital microscope at 50× magnification.
Results:
A one-way analysis of variance showed a statistically significant difference (p=0.002) between the groups. The CM group exhibited the lowest values for the marginal gaps (31.30±15.12 μm), while the ZZ group exhibited the highest values for the marginal gaps (44.83±28.76 μm) compared to other groups. A post hoc Tukey’s test for multiple comparisons between the experimental groups showed a statistically significant difference (p<0.05) between the group CM and group CD with group ZZ. The rest of the groups showed no significant differences between them. Variations in the values were observed for the four sites measured with the highest and the least mean marginal gap value of 43.19±23.84 μm and 32.49±12.21 μm for buccal and lingual sites, respectively.
Conclusion:
Variations existed in the marginal discrepancy values for the CAD/CAM systems investigated in the study. Vertical marginal discrepancy values observed for various systems investigated in the study were well within the clinically acceptable range.
Acknowledgments
The author is thankful to Mr. Bong for his help with the digital microscope measurements.
Author Statement
Research funding: The research project was approved and supported by the College of Dentistry Research Center (CDRC) and deanship of scientific research at King Saud University (Registration # FR 0404).
Conflict of interest: Author state no conflict of interest.
Informed consent: Informed consent is not applicable.
Ethical approval: The study was conducted at the Department of Prosthetic Dental Sciences/College of Dentistry Research Center, College of Dentistry, King Saud University and approved by the ethical committee of College of Dentistry Research Center (FR 0404).
References
[1] Conrad HJ, Seong WJ, Pesun IJ. Current ceramic materials and systems with clinical recommendations: a systematic review. J Prosthet Dent 2007;98:389–404.10.1016/S0022-3913(07)60124-3Suche in Google Scholar
[2] Heintze SD, Cavalleri A, Zellwegera G, Buchler A, Zappinia G. Fracture frequency of all-ceramic crowns during dynamic loading in a chewing simulator using different loading and luting protocols. Dent Mater 2008;24:1352–61.10.1016/j.dental.2008.02.019Suche in Google Scholar
[3] Della BA, Robert KJ. The clinical success of all-ceramic restorations. J Am Dent Assoc 2008;139:8–13.10.14219/jada.archive.2008.0361Suche in Google Scholar
[4] Daou EE. The zirconia ceramic: strengths and weaknesses. Open Dent J 2014;8:33–42.10.2174/1874210601408010033Suche in Google Scholar
[5] Martínez-Rus F, Suárez MJ, Rivera B, Pradíes G. Evaluation of the absolute marginal discrepancy of zirconia-based ceramic copings. J Prosthet Dent 2011;105:108–14.10.1016/S0022-3913(11)60009-7Suche in Google Scholar
[6] Boitelle P, Mawussi B, Tapie L, Fromentin O. A systematic review of CAD/CAM fit restoration evaluations. J Oral Rehabil 2014;41:853–74.10.1111/joor.12205Suche in Google Scholar
[7] Ha SJ, Cho JH. Comparison of the fit accuracy of zirconia-based prostheses generated by two CAD/CAM systems. J Adv Prosthodont 2016;8:439–48.10.4047/jap.2016.8.6.439Suche in Google Scholar
[8] Sorensen JA. A standardized method for determination of crown margin fidelity. J Prosthet Dent 1990;64:18–24.10.1016/0022-3913(90)90147-5Suche in Google Scholar
[9] Baig MR, Tan KB-C, Nicholls JI. Evaluation of the marginal fit of a zirconia ceramic computer-aided machined (CAM) crown system. J Prosthet Dent 2010;104:216–27.10.1016/S0022-3913(10)60128-XSuche in Google Scholar
[10] Holmes JR, Bayne SC, Holland GA, Sulik WD. Considerations in measurement of marginal fit. J Prosthet Dent 1989;62:405–8.10.1016/0022-3913(89)90170-4Suche in Google Scholar
[11] Shillingburg HT Jr, Hobo S, Whitsett LD, Jacobi R, Brackett SE. Principles of tooth preparations. In: Bateman LA, editor. Fundamentals of Fixed Prosthodontics. 3rd ed. Chicago: Quintessence; 1997:119–54.Suche in Google Scholar
[12] Rosenstiel S, Land M, Fujimoto J. Contemporary Fixed Prosthodontics. 4th ed. St Louis, IL: Mosby Elsevier; 2006.Suche in Google Scholar
[13] Mello C, Santiago Junior JF, Galhano G, Quinelli Mazaro JV, Scotti R, Pellizzer E. Analysis of vertical marginal adaptation of zirconia fixed dental prosthesis frameworks fabricated by the CAD/CAM system: a randomized, double-blind study. Int J Prosthodont 2016;29:157–60.10.11607/ijp.4285Suche in Google Scholar
[14] Torabi K, Vojdani M, Giti R, Taghva M, Pardis S. The effect of various veneering techniques on the marginal fit of zirconia copings. J Adv Prosthodont 2015;7:233–9.10.4047/jap.2015.7.3.233Suche in Google Scholar
[15] Ortega R, Gonzalo E, Gomez-Polo M, Lopez-Suarez C, Suarez MJ. SEM evaluation of the precision of fit of CAD/CAM zirconia and metal-ceramic posterior crowns. Dent Mater J 2017;36:387–93.10.4012/dmj.2016-305Suche in Google Scholar
[16] Ranganathan H, Ganapathy DM, Jain AR. Cervical and incisal marginal discrepancy in ceramic laminate veneering materials: a SEM analysis. Contemp Clin Dent 2017;8:272–8.10.4103/ccd.ccd_156_17Suche in Google Scholar
[17] Lee KY, Cho JW, Chang NY, Chae JM, Kang KH, Kim SC, et al. Accuracy of three-dimensional printing for manufacturing replica teeth. Korean J Orthod 2015;45:217–25.10.4041/kjod.2015.45.5.217Suche in Google Scholar
[18] Habib SR, Asiri W, Hefne MJ. Effect of anatomic, semi-anatomic and non-anatomic occlusal surface tooth preparations on the adaptation of zirconia copings. J Adv Prosthodont 2014;6:444–50.10.4047/jap.2014.6.6.444Suche in Google Scholar
[19] Park JY, Bae SY, Lee JJ, Kim JH, Kim HY, Kim WC. Evaluation of the marginal and internal gaps of three different dental prostheses: comparison of the silicone replica technique and three-dimensional superimposition analysis. J Adv Prosthodont 2017;9:159–69.10.4047/jap.2017.9.3.159Suche in Google Scholar
[20] Papadiochou S, Pissiotis AL. Marginal adaptation and CAD-CAM technology: a systematic review of restorative material and fabrication techniques. J Prosthet Dent 2018;119:545–51.10.1016/j.prosdent.2017.07.001Suche in Google Scholar
[21] Quintas AF, Oliveira F, Bottino MA. Vertical marginal discrepancy of ceramic copings with different ceramic materials, finish lines, and luting agents: an in vitro evaluation. J Prosthet Dent 2004;92:250–7.10.1016/j.prosdent.2004.06.023Suche in Google Scholar
[22] Pilo R, Cardash HS. In vivo retrospective study of cement thickness under crowns. J Prosthet Dent 1998;79: 621–5.10.1016/S0022-3913(98)70067-8Suche in Google Scholar
[23] Kim JH, Kim KB, Kim WC, Lee IH, Kim JH. Influence of various gypsum materials on precision of fit of CAD/CAM fabricated zirconia copings. Dent Mater J 2015;34:19–24.10.4012/dmj.2014-141Suche in Google Scholar PubMed
[24] Leong D, Chai J, Lautenschlager E, Gilbert J. Marginal fit of machine-milled titanium and cast titanium single crowns. Int J Prosthodont 1994;7:440–7.Suche in Google Scholar
[25] Gassino G, Barone Monfrin S, Scanu M, Spina G, Preti G. Marginal adaptation of fixed prosthodontics: a new in vitro 360-degree external examination procedure. Int J Prosthodont 2004;17:218–23.Suche in Google Scholar
©2019 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Review
- The peripheral cannulas in extracorporeal life support
- Research articles
- Determination of optimal positive end-expiratory pressure based on respiratory compliance and electrical impedance tomography: a pilot clinical comparative trial
- Simulation of personalised haemodynamics by various mounting positions of a prosthetic valve using computational fluid dynamics
- Recovery of signal loss adopting the residual bootstrap method in fetal heart rate dynamics
- Optimal level and order detection in wavelet decomposition for PCG signal denoising
- Simple gastric motility assessment method with a single-channel electrogastrogram
- Analysis of on-surface and in-air movement in handwriting of subjects with Parkinson’s disease and atypical parkinsonism
- Wavelet-enhanced convolutional neural network: a new idea in a deep learning paradigm
- Digital microscopic evaluation of vertical marginal discrepancies of CAD/CAM fabricated zirconia cores
- Modelling the degree of porosity of the ceramic surface intended for implants
- How Hedstrom files fail during clinical use? A retrieval study based on SEM, optical microscopy and micro-XCT analysis
- A novel measurement strategy to evaluate the human head as a transition medium for inductive ear-to-ear communication
- Short communication
- Force plates may be used for dynamic analyses of endoprostheses explantation procedures
Artikel in diesem Heft
- Frontmatter
- Review
- The peripheral cannulas in extracorporeal life support
- Research articles
- Determination of optimal positive end-expiratory pressure based on respiratory compliance and electrical impedance tomography: a pilot clinical comparative trial
- Simulation of personalised haemodynamics by various mounting positions of a prosthetic valve using computational fluid dynamics
- Recovery of signal loss adopting the residual bootstrap method in fetal heart rate dynamics
- Optimal level and order detection in wavelet decomposition for PCG signal denoising
- Simple gastric motility assessment method with a single-channel electrogastrogram
- Analysis of on-surface and in-air movement in handwriting of subjects with Parkinson’s disease and atypical parkinsonism
- Wavelet-enhanced convolutional neural network: a new idea in a deep learning paradigm
- Digital microscopic evaluation of vertical marginal discrepancies of CAD/CAM fabricated zirconia cores
- Modelling the degree of porosity of the ceramic surface intended for implants
- How Hedstrom files fail during clinical use? A retrieval study based on SEM, optical microscopy and micro-XCT analysis
- A novel measurement strategy to evaluate the human head as a transition medium for inductive ear-to-ear communication
- Short communication
- Force plates may be used for dynamic analyses of endoprostheses explantation procedures
