Criteria that must be considered in order to optimise the success of computer aided designed and computer aided manufactured (CAD/CAM) restorations


  • Nic Van Reede Van Outshoorn PG Diploma in Prosthodontics, Private Practitioner, University of Pretoria
  • Charles Bradfield Registrar Department of Prosthodontics, University of Pretoria
  • Leanne Sykes Head of Department of Prosthodontics, University of Pretoria





Several factors influence the success or failure of ceramic dental restorations, and need to be considered and understood prior to embarking on these restorations. It is incumbent on the clinician to have an in-depth knowledge on the science of ceramic materials, current bonding agents and techniques, understanding and working proficiency of computer aided design and computer aided
manufacture (CAD/CAM) computer hardware and software, an appreciation of oral biology, the role of occlusion and occlusal schemes, as well as recognition and management of patients with parafunctional habits. This paper will cover the principles of cavity preparation and tooth preparation designs, maintenance and / or achievement of inter-arch stability, preservation of marginal integrity, provision of occlusal stability, and digital impression techniques required to optimise accuracy. Provision of a chairside manufactured CAD/CAM dental restoration requires dentists to perform both the clinical and the laboratory aspects of the procedure. The responsibility for the quality of the final restoration thus rests in their hands alone and it is their duty to ensure they are adequately trained and skilled in all aspects


Download data is not yet available.


Metrics Loading ...

Author Biography

Charles Bradfield, Registrar Department of Prosthodontics, University of Pretoria


Gianfranco Politano,Bart van Meerbeek, Marlene Peumans. Nonretentive Bonded Ceramic Partial Crowns: Concept and Simplified Protocol for Longlasting Dental Restorations. J-Adhes Dent 2018; 20: 495-510. doi.10.3290/j.jad. a41630

Arnetzl GV, Arnetzl G. Design for all-ceramic inlay materials. Int J Comp Dent 2006 Oct;9(4): 289-298.

Arnetzl GV , Arnetzl G :Biomechanical examination of inlay geometries-is there a basic biomechanical principle? Int J Comp Dent 2009; 12(2): 119-130.

Arnetzl GV, Arnetzl G.; ReliablitIy of non-retentive allceramic CAD/CAM overlays. Int J Comp Dent 2012; 15: 185-197.

Ahlers M. Oliver, Mörig G, Blunck, U, Hajto J, Pröbster L, Franckenberger R. Guidelines for the preparation of CAD/CAM ceramic inlays and partial crowns. Int J Comp Dent 2009; 12: 309-325.

Isil Cekic-Nagas , Senay Canay, Erdal Sahin.Bonding of resin core materials to lithium disilicate ceramics: the effect of resin cement film thickness. Int J Prosthodont. Sep-Oct 2010;23 (5): 469-471

Ayaka Shirasaki (DDS), Satoshi Omori (DDS, PhD), Chiharu Shin (DDS, PhD), Mina Takita (DDS), Reina Nemoto (DDS, PhD), Hiroyuki Miura (DDS, PhD); Influence of occlusal and axial tooth reduction on fracture load and fracture mode of polyetheretherketone molar restorations after mechanical cycling.Asian Pac J Dent 2108 ; 18: 29-36.

Salah A Yousief, Faysal Abdullah Aman, Maher Mohammed Almutairi, Ahmed Eid Dafe Allah Alhejali, Faisal Mahmoud Alshehri, Khalid Mohammed Saeed Almutairi, Ola Mohammed Rambo, Abeer Mohammed Rambo, Anmar Essam Kattan, Ali Abdulrahman Alsufyani and Abdullah Milfi Alonazi. CAD/CAM Endocrowns Vs. Crowns” EC Dental Science 19.2

(2020) :1-7


Giovanni Tommaso Rocca (DMD), Nicolas Rizcalla (DMD) Ivo Krejci, Prof (DMD) PD, Didler Dietschi, (DMD, PhD, PD) Evidence-based concepts and procedures for bonded inlays and onlays. Part II. Guidelines for cavity preparation and restoration fabrication. Vol. 10 Number 3 2015

Shahed Ali M. Al Khalifah, The Influence of Material Type, Preparation Design and Tooth Substrate on Fracture Resistance of Molar Onlays.Thesis submitted in partial satisfaction of the requirements for the Master of Science in Oral Biology.

Besrour A, Nasri S, Hassine N, Harzallah B, Cheriff M, Hadyaoui D.Contribution of Ceramic Restorations to Create an Optimal Interproximal Area. Journal of Clinical and Medical Images ISSN: 2640-9615.

AZAR Basel, ECKERT Steve, KUNKELA Josef, INGR Tomaš , MOUNAJJED Radek. The marginal fit of lithium disilicate crowns: Press vs. CAD/CAM Braz Oral Res. 2018;32

Fernanda Ferruzzi Lima (DDS, MS, PhD), Constantino Fernandes Neto, José H Rubo(DDS, MS, PhD), Gildo Coelho Santos Jr. (DDS, MS, PhD) and Maria Jacinta Moraes Coelho Santos (DDS, MS, PhD) Marginal adaptation of CAD/CAM onlays: Influence of preparation design and impression technique. Journal of Prosthetic Dentistry 2017

Sorin Porojan, Florin Topalǎ, Lliliana Sandu: Finite Element Analysis of Molars Restored with Ceramic Crowns. Corpus ID:18067904:Published 2012.

Beata Dejak, Andrzej Mlotkowski, Cezary Langot. (Department of Prosthetic Dentistry, Medical University of Lodz , Poland) Three-dimensional finite A NEW FORMULATION DESIGNED FOR SPECIALIZED ENAMEL PROTECTIONGlaxoSmithKline Consumer Healthcare South Africa (Pty) Ltd. 57 Sloane Street, Bryanston, 2021. Reg. No.: 2014/173930/07. For any further information, including safety information, please contact the GSK Hotline on +27 11 745 6001 or 0800 118 274. Trademarks are owned by or licensed to GSK group of companies. Refer to carton for full use instructions. Promotion Number: PM-ZA-SENO-21-00038.16239 Pronamel Strip ad PRESS.indd 1 2021/03/12 15:29228 > RESEARCH / SADJ Vol. 77 No. 4element analysis of molars with thin-walled prosthetic crowns made of various materials.2011 SciVerse journals.

Asher Chiu, Yen-Wei Chen, Juri Hayashi Alizera Sadr Accuracy of CAD/CAM Digital Impressions with Different Intraoal Scanner Parameters. Department of Restorative Dentistry, University of Washington School of Dentistry, Seattle 2020

Rui Zhang(DDS), Qian Ding (DDS), Yuchun Sun(DDS, PhD), Lei Zhang, (DDS, PhD) and Qiufei Xie, (DDS, PhD): Assessment of CAD/CAM zirconia crowns designed with 2 different methods: A self-controlled clinical trial: JPD 2018; p 686-692.

Andreas Ender (Dr. med. Dent), Albert Mehl (Prof. Dr. med.dent.)Full arch scans: Conventional versus digital impressions-An in-vitro study. Int Journal of Comp Dentsitry.Jan 2011

A. Ender (Dr. med.dent.), M. Zimmerman (, A. Mehl ( Accuracy of complete-and partial-arch impressions of actual intraoral scanning systems in vitro.

Francesco Guido Mangano, Uli Hauschild, Giovanni Veronesi, Mario Imburgia, Carlo Mangano and Oleg Admakin. Trueness and precision of 5 intraoral scanners in the impressions of a single and multiple implants:a comparative in vitro study.BMC Oral Health, (2019) 19-101

S. Faruqui, M. Fida, A. Shaker.:Comparisson of tooth and arch dimensions in dental crowding and spacing. POJ 2012:4(2)48-55

A, Mehl, A. Ender. W. Mörmann, T. Attin.(2009) Accuracy of testing a new intraoral camera. IJCD,2012(1):11-28




How to Cite

Van Outshoorn, N. V. R. ., Bradfield, C. ., & Sykes, L. (2022). Criteria that must be considered in order to optimise the success of computer aided designed and computer aided manufactured (CAD/CAM) restorations. South African Dental Journal, 77(04), 222–229.

Most read articles by the same author(s)

1 2 3 > >>