CAD/CAM is an abbreviation of computer-aided design and computer-aided manufacturing and involves the use of computer systems to assist in the creation, modification, analysis or optimism of a design. . Its main goal is to create a faster production process as well as improve design quality. CAD/CAM is currently used in many fields such as shipbuilding, aerospace, architecture, automotive and prosthetics (including maxillofacial prosthetics and dentistry). The concept of CAD/CAM in dentistry is not new having existed in the early 1970s when the visionary Dr. Werner Mormann developed CEREC1. Since its inception, CAD/CAM has been increasingly used to facilitate the production of dental appliances. Indeed, nearly 50 to 58% of all indirect restorations today are, in part or entirely, manufactured by a CAD/CAM system1. Due to the continued adoption of CAD/CAM in dentistry, it is expected that by 2015, an additional 15% of dental appliances will be produced by this system. The application of CAD/CAM helps new areas of production such as partial parts. custom-made frameworks, orthodontic appliances and implant abutments1. Approximately 15 systems have been developed and presented, although only a few practical and suitable systems have been introduced to the dental market to date. The different systems can be roughly divided into chairside and laboratory technologies. Although there is only one established chairside system (Cerec, Sirona Dental Systems, Bensheim, Germany) for the dental office, the rest of the systems have been developed for use in dental laboratories2. RENISHAWAt the forefront of CAD/CAM development is Gloucester-based company Renishaw, established in 1973 by Sir David McMutry. This global company s...... middle of paper ......, Allergic reactions associated with metal alloys in fixed porcelain-fused-to-metal prosthodontic devices - A systematic review. Quintessence International, 43(10), pages 872-876.14. Abduo, J. Lyons, K. (2013), Journal article Rationale for the use of CAD/CAM technology in implant prosthesis. International Journal of Dentistry, pp.1-8. Item number 768121.15. Suleiman, SH Steyern, PVV (2013), Fracture strength of fused porcelain on cast, milled or laser sintered cobalt-chrome metal crowns. Acta Odontologica Scandinavica, pp.1-10.16. Beuer, F. Schweiger, J. Edelhoff, D. (2008), Digital dentistry, an overview of recent developments for CAD/CAM generated restorations. British Dental Journal, 204, pp.505-511.17. Komine, F. Blatz, MB Matsumura, H. (2010), Current status of fixed zirconia-based restorations. Journal of Oral Science, 52 (4), p... 531-539.