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:: Volume 30, Issue 4 (10-2018) ::
J Islam Dent Assoc Iran 2018, 30(4): 139-144 Back to browse issues page
Effect of Scanner Type on Marginal Adaptation of e.max CAD Crowns
Hamid Jalali1, Habib Hajmiragha1, Farzaneh Farid 2, Siavash Tabatabaie3, Samar Jalali4
1- Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
2- Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran , f.farid@yahoo.com
3- Dentist, Private Practice, Tehran, Iran
4- Student, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
Abstract:   (614 Views)
Background and Aim: Marginal adaptation has a significant role in the success and longevity of indirect restorations. This experimental study compared the effect of intraoral and extraoral scanning on the marginal adaptation of the crowns which was made using the CEREC AC system.
Materials and Methods: A Typodont maxillary first molar was prepared and served as the master die for an all-ceramic restoration. In the first group, the model was scanned ten times directly by the intraoral scanner. In the second group, ten conventional impressions were made from Typodont, and the extraoral scanner scanned the resulting gypsum casts. The data was used to design and build crowns from IPS e.max CAD blocks. The crowns were placed on the prepared tooth, and the marginal gap was measured at 16 points by a stereomicroscope at ×35 magnification. Collected data were analyzed using t-test.
Results: The mean marginal gap for intraoral and extraoral groups were 74.83 ± 10.07 μm and 102.56 ± 6.89 μm respectively. The gap was significantly less in the intraoral group (P-value = 0.001).
Conclusion: Marginal adaptation was clinically acceptable in both groups, although the results of intraoral scanning showed significantly lower gap than extraoral scanning.
Keywords: Computer aided design/computer aided manufacturing, all-ceramic crowns, intraoral scanners, extraoral scanners, Dental Marginal Adaptation
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Type of Study: Orginal | Subject: Porosthodontics
1. Babu PJ, Alla RK, Alluri VR, Datla SR, Konakanchi A. Dental ceramics: part I – an overview of composition, structure and proper-ties. Am J Mater Eng Technol. 2015; 3(1):13-18.
2. Datla SR, Alla RK, Alluri VR, Babu PJ, Konakanchi A. Dental ceramics: part II – recent advances in dental ceramics. Am J Mater Eng Technol. 2015; 3(2):19-26.
3. González de Villaumbrosia P, Martínez-Rus F, García-Orejas A, Salido MP, Pradíes G. In vitro comparison of the accuracy (trueness and precision) of six extraoral dental scanners with different scanning technologies. J Prosthet Dent. 2016 Oct;116(4):543-550.
4. Chochlidakis KM, Papaspyridakos P, Geminiani A, Chen CJ, Feng IJ, Ercoli C. Digital versus conventional impressions for fixed prosthodon-tics: A systematic review and meta-analysis. J Prosthet Dent. 2016 Aug;116(2):184-190.
5. Karl m. In vitro studies on CAD/CAM restorations fabricated with Procera technology: an overview. Quintessence Int. 2015 Jul-Aug; 46(7): 561-74.
6. Shimizu S, Shinya A, Kuroda S, Gomi H. The accuracy of the CAD system using intraoral and extraoral scanners for designing of fixed dental prostheses. Dent Mater J. 2017 Jul 26;36(4):402-407.
7. Renne W, Ludlow M, Fryml J, Schurch Z, Mennito A, Kessler R, et al. Evaluation of the accuracy of 7 digital scanners: An in vitro anal-ysis based on 3-dimensional comparisons. J Prosthet Dent. 2017 Jul;118(1):36-42.
8. Guth JF, Keul C, Stimmelmayr M, Beuer F, Edelhoff D. Accuracy of digital models ob-tained by direct and indirect data capturing. Clin Oral Investig. 2013 May;17(4):1201-8.
9. Brawek PK, Wolfart S, Endres L, Kirsten A, Reich S. The clinical accuracy of single crowns exclusively fabricated by digital workflow-the comparison of two systems. Clin Oral Investig. 2013 Dec;17(9):2119-25.
10. Rudolph H, Salmen H, Moldan M, Kuhn K, Sichwardt V, Wostmann B, et al. Accuracy of intraoral and extraoral digital data acquisition for dental restorations. J Appl Oral Sci. 2016 Jan-Feb; 24(1):85-94.
11. Flügge TV, Schlager S, Nelson K, Nahles S, Metzger MC. Precision of intraoral digital dental impressions with iTero and extraoral digitization with the iTero and a model scanner. Am J Or-thod Dentofacial Orthop. 2013 Sep;144(3):471-8.
12. Syrek A, Reich G, Ranftl D, Klein C, Cerny B, Brodesser J. Clinical evaluation of all-ceramic crowns fabricated from intraoral digitalimpressions based on the principle of active wavefront sampling. J Dent. 2010 Jul;38(7):553-9.
13. Shembesh M, Ali A, Finkelman M, Weber HP, Zandparsa R. An In Vitro Comparison of the Marginal Adaptation Accuracy of CAD/CAM Restorations Using Different Impression Sys-tems. J Prosthodont. 2017 Oct;26(7):581-586.
14. Hamza TA, Ezzat HA, El-Hossary MM, Katamish HA, Shokry TE, Rosenstiel SF. Accuracy of ceramic restorations made with two CAD/CAM systems. J Prosthet Dent. 2013 Feb; 109(2):83-7.
15. Su TS, Sun J. Comparison of repeatability between intraoral digital scanner and extraoral digital scanner: An in-vitro study. J Prosthodont Res. 2015 Oct;59(4):236-42.
16. Da Costa JB, Pelogia F, Hagedorn B, Ferracane JL. Evaluation of different methods of optical impression making on the marginal gap of onlays created with CEREC 3D. Oper Dent. 2010 May-Jun;35(3):324-9.
17. Bohner LOL, De Luca Canto G, Marció BS, Laganá DC, Sesma N, Tortamano Neto P. Computer-aided analysis of digital dental impressions obtained from intraoral and ex-traoral scanners. J Prosthet Dent. 2017 Nov;118(5):617-623.
18. Cook KT, Fasbinder DJ. Accuracy of CAD/CAM crown fit with infrared and LED cameras. Int J Comput Dent. 2012;15(4):315-26.
19. Lee KB, Park CW, Kim KH, Kwon TY. Marginal and internal fit of all-ceramic crowns fabricated with two different CAD/CAM sys-tems. Dent Mater J. 2008 May;27(3):422-6.
20. Salem NM, Abdel Kader SH, Al Abbassy F, Azer AS. Evaluation of fit accuracy of comput-er-aided design/computer-aided manufacturing crowns fabricated by three different digital impression techniques using cone-beam computerized tomography. Eur J Prosthodont 2016; 4(2):32-6.
21. McLean JW, von Fraunhofer JA. The estimation of cement film thickness by an in vivo technique. Br Dent J. 1971 Aug 3;131(3):107-11.
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Jalali H, Hajmiragha H, Farid F, Tabatabaie S, Jalali S. Effect of Scanner Type on Marginal Adaptation of e.max CAD Crowns. J Islam Dent Assoc Iran. 2018; 30 (4) :139-144
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Volume 30, Issue 4 (10-2018) Back to browse issues page
Journal of Islamic Dental Association of Iran


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