scholarly journals Computer-aided dental manufacturing technologies used in fabrication of metal frameworks

2021 ◽  
Vol 38 (SI-2) ◽  
pp. 119-122
Author(s):  
Necati KALELİ ◽  
Çağrı URAL ◽  
Yurdanur UÇAR
Keyword(s):  
Manufacturing Systems ◽  
Digital Technologies ◽  
Metal Alloys ◽  
Dental Practice ◽  
Casting Method ◽  
Computer Aided Manufacturing ◽  
Dental Restorations ◽  
Computer Aided ◽  
Manufacturing Methods ◽  
Manufacturing Technologies

Metal alloys have been used for many years as framework material of dental restorations. The conventional lost-wax and casting method, which was very popular in fabrication of metal frameworks, are now being replaced by computer-aided manufacturing technologies. Computer-aided manufacturing methods offer many advantages, such as standardization and quality in manufacturing, precise fit of restorations, and improved mechanical strength. Digital technologies used in fabrication of metal frameworks are simply classified as subtractive and additive computer-aided manufacturing systems, and each have their own subdivisions, which show differences in the used technology. This review summarizes computer-aided systems used in fabrication of metal frameworks in terms of use in dental practice, advantages, disadvantages and provides clinical recommendations.

scholarly journals What does complete digital workflow mean for dentistry?

2021 ◽  
Vol 38 (SI-2) ◽  
pp. 175-179
Author(s):  
Necati KALELİ ◽  
Çağrı URAL
Keyword(s):  
Computer Aided Manufacturing ◽  
Digital Workflow ◽  
Standard Device ◽  
Dental Clinics ◽  
Considerable Cost ◽  
Digital Transition ◽  
Computer Aided ◽  
Manufacturing Technologies ◽  
Dental Applications

The introduction of computer-aided manufacturing technologies and further developments have changed the routine workflow in dentistry, and dentists are now rapidly shifting from conventional to digital. As a result, intra-oral scanners have become a standard device in dental clinics even though they have a considerable cost. One of the important reasons of this digital transition is to ensure standardized-quality manufacturing with a shorter chair time, which is promised by complete digital workflow. So, what does complete digital workflow mean for dentistry? This review elaborately answers to this question and summarizes the stages of complete digital workflow in dental applications.

Feature-based automatic NC programming for aero-engine casings

2018 ◽  
Vol 233 (4) ◽  
pp. 1289-1301
Author(s):  
Nan Zhou ◽  
Xu Liu
Keyword(s):  
Manufacturing Systems ◽  
Numerical Control ◽  
Programming Approach ◽  
Programming System ◽  
Computer Aided Manufacturing ◽  
Nc Programming ◽  
Computer Aided ◽  
Aero Engine ◽  
Feature Based ◽  
Low Efficiency

Traditional numerical control (NC) programming methods based on commercial computer-aided manufacturing systems usually require a large number of manual interactions with high-skilled experience, which not only results in low efficiency but also unstable machining quality. Especially since the structural complexity and machining requirements keep increasing, the NC programming is becoming a bottleneck problem in machining complex parts like aero-engine casings. This article proposes a feature-based automatic NC programming approach for aero-engine casings. A machining feature classification towards the geometric and machining characteristics of aero-engine casings is given. Then, a feature-based method to extract machining regions by considering the alternatives in selecting turning or milling operations is discussed. After the construction of machining operations, an undercut region detection method is also presented to evaluate the interim machining effects reasoned by each individual machining operation for excessive cutting avoidance. By implementing the proposed approach, a feature-based NC programming system is developed on a commercial computer-aided manufacturing platform and a real aero-engine casing is chosen to demonstrate the feasibility of the proposed approach.

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