Journal of IMAB - Annual Proceeding (Scientific Papers)
Publisher: Peytchinski, Gospodin Iliev
ISSN: 1312 773X (Online)
Issue: 2016, vol. 22, issue 3
Subject Area: Dental Medicine
Pages: 1320-1323
DOI: 10.5272/jimab.2016223.1320
Published online: 27 September 2016

J of IMAB 2016 Jul-Sep;22(3):1320-1323
Mariela Tsanova Corresponding Autor, Neshka Manchorova-Veleva, Snejana Tsanova,
Department of Operative Dentistry and Endodontics, Faculty of Dental Medicine, Medical University - Plovdiv, Bulgaria.

Object: To study the CAD/CAM systems’ possibilities for manufacturing Zirconia indirect restorations for restoring vital, vastly devastated teeth.
Material and methods: Five patients with vital, heavily destroyed molars were included in the clinical study. The teeth were prepared according to requirements for Zirconia restorations. The impressions were taken with 3D intraoral scanner. The acquired data is transmitted electronically for designing the future restoration by the CAD software. After designing, the restoration is milled by the CAM module and sintered, according to a specially projected programme in accordance with the manufacturing demands. After clinical check-up, the restorations are glazed, air-blasted and cemented.
Results: Setting up an individual protocol for working with CAD/CAM systems for restoring vital, severely devastated teeth with Zirconia indirect restorations. A research is made on 3D digital scanning, occlusal and proximal modeling, virtual articulation, analyzing the incline of the cavity walls, the thickness of the restoration and the possibilities for restoring the anatomy of the tooth according to patient’s individual characteristics of the teeth’s arch.
The scanning and design process should be evaluated with the same quality control as when using traditional methods. The CAD software requires excellent preparation of the tooth cavity and digital scanning. This is the reason why these systems require a thorough understanding of CAD/CAM calibration and parameters of the product to be clinically acceptable. Once understood, CAD/CAM dentistry can create detailed and accurate restorations that function and perform with great success and longevity.

Key words: CAD/CAM, digital, indirect, restorations,

- Download FULL TEXT /PDF 941 KB/
Please cite this article in PubMed Style or AMA (American Medical Association) Style:
Tsanova M, Manchorova-Veleva N, Tsanova S. Application of 3D digital scanning and CAD/CAM systems for Zirconia indirect restorations. J of IMAB. 2016 Jul-Sep;22(3):1320-1323.

Correspondence to: Dr. Mariela Tsanova; Department of Operative dentistry and Endodontics, Faculty of Dental Medicine, Medical University – Plovdiv; 3, Hristo Botev boul., Plovdiv, Bulgaria; E-mail:

1. Tinschert J, Natt G, Hassenpflug S, Spiekermann H. Status of current CAD/CAM technology in dental medicine. Int J Comput Dent. 2004 Jan;7(1):25-45. [PubMed]
2. Fasbinder DJ. Clinical performance of chairside CAD/CAM restorations. J Am Dent Assoc. 2006 Sep; 137 suppl:22S-31S. [PubMed]
3. Patel N. Contemporary dental CAD/CAM: modern chairside/lab applications and the future of computerized dentistry. Compend Contin Educ Dent. 2014 Nov-Dec;35(10):739-46. [PubMed]
4. Posselt A, Kerschbaum T. Longevity of 2328 chairside Cerec inlays and onlays. Int J Comput Dent. 2003 Jul;6(3):231-48. [PubMed]
5. Berg NG, Dérand T. A 5-year evaluation of ceramic inlays (CEREC). Swed Dent J. 1997; 21(4):121-7. [PubMed]
6. Kim SY, Kim MJ, Han JS, Yeo IS, Lim YJ, Kwon HB. Accuracy of dies captured by an intraoral digital impression system using parallel confocal imaging. Int J Prosthodont. 2013 Mar-Apr;26(2):161-3. [PubMed].
7. Scotti R, Cardelli P, Baldissara P, Monaco C. Clinical fitting of CAD/CAM zirconia single crowns generated from digital intraoral impressions based on active wavefront sampling. J Dent. 2011 Oct 17. [Epub ahead of print] [PubMed]
8. Ender A, Mehl A. Full arch scans: conventional versus digital impressions--an in-vitro study. Int J Comput Dent. 2011;14(1):11-21. [PubMed]
9. Ogledzki M, Wenzel K, Doherty E, Kugel G. Accuracy of 3M-Brontes stereolithography models compared to plaster models. J Dent Res. 2011:90(spec iss A): Abstract 1060.
10. Rudolph H, Quaas S, Haim M, Preissler J, Walter MH, Koch R, et al. Randomized controlled clinical trial on the three-dimensional accuracy of fast-set impression materials. Clin Oral Investig. 2013 Jun;17(5):1397-406. [PubMed]
11. Syrek A, Reich G, Ranftl D, Klein C, Cerny B, Brodesser J. Clinical evaluation of all-ceramic crowns fabricated from intraoral digital impressions based on the principle of active wavefront sampling. J Dent. 2010 Jul;38(7):553-9. [PubMed]
12. Posselt A, Kerschbaum T. Longevity of 2328 chairside Cerec inlays and oniays. Int J Computr Dent. 2003 Jul;6(3):231-48. [PubMed]
13. Gimenez B, Ozcan M, Martinez-Rus F, Pradies G. Accuracy of a digital impression system based on active wavefront sampling technology for implants considering operator experience, implant angulation, and depth. Clin Implant Dent Relat Res. 2015 Jan;17 Suppl 1:e54-64. [PubMed] [CrossRef]
14. Ender A1, Mehl A. Influence of scanning strategies on the accuracy of digital intraoral scanning systems. Int J Comput Dent. 2013; 16(1):11-21. [PubMed]
15. van der Meer WJ, Andriessen FS, Wismeijer D, Ren Y. Application of intra-oral dental scanners in the digital workflow of implantology. PLoS One. 2012; 7(8):e43312. [PubMed]
16. Givan DA, Burgess JO, O’Neal SJ, Aponte AA. Prospective evaluation of ceramic crowns by digital and conventional impressions. J Dent Res. 2011; 90(spec iss A). Abstract 380.

Received: 30 May 2016
Published online: 27 September 2016

back to Online Journal