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Year : 2014  |  Volume : 2  |  Issue : 3  |  Page : 110-111

Is computer aided design-computer aided manufacturing including to Pediatric Dentistry?


Department of Prosthodontics, Ishik University, College of Dentistry and Hospital, Arbil, Iraq

Date of Web Publication28-Nov-2014

Correspondence Address:
Recep Uzgur
Department of Prosthodontics, Ishik University, College of Dentistry and Hospital, Arbil
Iraq
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2321-6646.145591

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How to cite this article:
Uzgur R. Is computer aided design-computer aided manufacturing including to Pediatric Dentistry?. J Pediatr Dent 2014;2:110-1

How to cite this URL:
Uzgur R. Is computer aided design-computer aided manufacturing including to Pediatric Dentistry?. J Pediatr Dent [serial online] 2014 [cited 2019 Jan 17];2:110-1. Available from: http://www.jpediatrdent.org/text.asp?2014/2/3/110/145591


  Introduction Top


The conventional manufacturing approach that is employed for the purposes of producing fixed partial denture (FPD) metal frameworks utilizes what is known as the lost-wax technique. [1] This technique involves the administration of local anesthesia, preparation of abutment teeth, forming of impressions and models, waxing up of the FPD framework and finally casting. [2] Unfortunately, a large number of technical drawbacks are typically associated with this manufacturing technique. These include, but are not limited to, patient discomfort, imprecise marginal fit and metal framework distortion. [3] In recent years, specialists have employed both computer-aided design (CAD) and computer aided manufacturing techniques (CAM) to improve accuracy overcome these problems. Using these techniques specialists are able to digitalize the prepared abutment teeth, produce a virtual design of the FPD frameworks and then manufacture the prosthetic using a computer aided manufacturing (CAM) process. [4]


  New methods Top


The CAM systems that are currently used to fabricate dental prostheses utilize two manufacturing approaches: The substractive approach, which is used to mill pre-formed dental blanks; or "the additive approach," which is used in the stereolitography, robocasting, ink-printing and selective laser sintering methods. [5]

The selective laser sintering method involves the use of a powder-based layer-additive manufacturing technique that produces prototypes and the required tooling quickly in a quick and efficient manner. Laser beams, which operate in either continuous or pulse mode, provide a source of heat that scans and joins powders in predetermined sizes and shapes of layers that directly correspond with the cross sections produced during the CAD phase or stereolithography. [6]


  New materials Top


In recent years, cobalt-chromium-based soft milling blanks that are suitable for the substractive approach have been introduced to the dental market. The manufacturer of these components claims that the wax-like texture of the blanks results in a significant reduction in the total manufacturing time than that required in the conventional milling of solid Co-Cr blanks. The producers also claim that the milled FPDs offer mechanical and biological properties that are comparable with those employed in conventional manufacturing techniques. [7]


  Pediatric dentistry Top


Not only adult patients, but also pediatric patients are being treated by CAD-CAM systems with great success today. Especially, primary molars and broken-down permanent first molars are placed utilizing chairside CAD/CAM technology. All things considered about pediatric patients, CAD-CAM technology with speed, precise and short time may be a better solution in the future. [8]

 
  References Top

1.
Quante K, Ludwig K, Kern M. Marginal and internal fit of metal-ceramic crowns fabricated with a new laser melting technology. Dent Mater 2008;24:1311-5.  Back to cited text no. 1
    
2.
Ucar Y, Akova T, Akyil MS, Brantley WA. Internal fit evaluation of crowns prepared using a new dental crown fabrication technique: Laser-sintered Co-Cr crowns. J Prosthet Dent 2009;102:253-9.  Back to cited text no. 2
    
3.
Kim KB, Kim WC, Kim HY, Kim JH. An evaluation of marginal fit of three-unit fixed dental prostheses fabricated by direct metal laser sintering system. Dent Mater 2013;29:e91-6.  Back to cited text no. 3
    
4.
Miyazaki T, Hotta Y, Kunii J, Kuriyama S, Tamaki Y. A review of dental CAD/CAM: Current status and future perspectives from 20 years of experience. Dent Mater J 2009;28:44-56.  Back to cited text no. 4
    
5.
Anusavice KJ. Phillips' Science of Dental Materials. St.Louis, Missouri; Chapter 21: Emerging Technologies, 2012. p. 531-532.  Back to cited text no. 5
    
6.
Kumar S. Selective laser sintering: A qualitative and objective approach. JOM 2003;55:43-7.  Back to cited text no. 6
    
7.
Amann Girrbach, Materials for CAD-CAM, p. 5-6, Catalog. 2014.  Back to cited text no. 7
    
8.
Stines SM. Pediatric CAD/CAM applications for the general practitioner. Part 1. Dent Today 2008;27:130, 2-3.  Back to cited text no. 8
    




 

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  In this article
Introduction
New methods
New materials
Pediatric dentistry
References

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