This paper describes a method of machining feature recognition from a freeform surface based on the relationship between unique machining patches and critical points on a component’s surface. The method uses Morse theory to extract critical surface points by defining a scalar function on the freeform surface. Features are defined by region growing between the critical points using a tool path g...

CAD/CAM (Computer-aided design/Computer-aided manufacturing) dental implant surgical templates applied in the immediate implant surgery in esthetic area,is beneficial to acquire appropriate three-dimensional position,realize the transformation that from virtual plan to practical surgery, from traditional surgery depended on experience to digital and accurate surgery, improve predictability, acc...

The applications of various technological advances in implant dentistry and in all aspects of the diagnostic, treatment planning, surgical, and restorative phases are gaining popularity. Additive rapid prototyping and computer-aided design/computer-aided manufacturing (CAD/CAM) technology are used to generate stereolithographic surgical guides and prefabricated interim prostheses to facilitate ...

This report describes the clinical and technical aspects in the oral rehabilitation of an edentulous patient with knife-edge ridge at the mandibular anterior edentulous region, using implant-retained overdentures. The application of computer-aided design and computer-aided manufacturing (CAD/CAM) in the fabrication of the overdenture framework simplifies the laboratory process of the implant pr...

CAD/CAM (computer-aided design/computer-aided manufacturing) in implant dentistry has broadened their application areas into treatment planning, implant placement and restorations. Due to the multitude and complexity of developing techniques, it is challenging to choose the optimal method for each patient. Therefore, this clinical report describes a method of restoring an edentulous maxilla by ...

Although the overwhelming majority of dental offices now use digital radiography and patient records, relatively few yet use either stand-alone intraoral scanning systems (6%) or complete systems that combine intraoral scanning with computer-aided design and computer-aided manufacturing (12%). This should change as dentists become more aware of the numerous advantages scanning systems offer in ...

The paper presents the way in which the active control can be improved via PC graphic software. It is describes an example in which for a dimensional control gauge, for different dimension shafts, the dimensional measuring can be aided by computer. In this way, all the necessary information regarding the form deviations of the shaft, could be generated and stored during the measuring process. T...

After 20 months of clinical testing and more than 600 bonded arches, brief interim conclusions can be drawn on treatment with a new lingual bracket system, one that differs fundamentally from conventional appliances in both design and manufacture. The demand for maximum individuality is met by using state-of-the-art computer-aided design/computer-aided manufacturing technology to fuse the 2 nor...

A new algorithm for approximation of a given surface or scattered points by a surface of revolution is presented. It forms the basis for a study of approximation with profile surfaces. Those are sweeping surfaces traced out by a planar curve when its plane is rolling on a developable surface. Important special cases include developable surfaces and pipe surfaces, where the moving curve is a str...

Intelligent agents provide a means to integrate various manufacturing software applications. The agents are typically executed in a computer-based collaborative environment, sometimes referred to as a multi-agent system. The National Institute of Standards and Technology (NIST) has developed a prototype multi-agent system supporting the integration of manufacturing planning, predictive machinin...