Computer-aided Interference-free Design of Occlusal Surface for Dental 3-D CAD
スポンサーリンク
概要
- 論文の詳細を見る
Attempts have been made to apply advanced CAD/CAM technology to the design and manufacturing of dental prostheses such as crowns and bridges in order to simplify production procedure as well as to improve their quality. Presently, several dental CAD/CAM systems capable of designing occlusal surface are available commercially. Design of complicated occlusal surfaces is of primary importance in dental CAD, due to its function in patient's stomatognathic system. In particular, location of contact points in the intercuspal position is essential to obtain a functional occlusal surface without interference. Previous interfere-free design, however, has been done on a trial-and-error basis by using visual inspection. In order to improve such time-consuming and inaccurate procedure into a semi-automatic and accurate one based on quantitative evaluations, we already developed two difference functions for dental CAD system such as 1) a virtual dental articulator, and 2) proximity mapping on the crown surface relative to its opposing occlusal surface. Subsequently, this paper proposes a computeraided system for assisting the determination of occlusal contact points employing the proximity mapping on the opposing surface. The system can designate such regions, which can be estimated from contour of the opposing occlusal surfaces and their relative movements simulated by using the virtual articulator. In an attempt to evaluate applicability of our system, several experiments for designing the crown of a lower first molar were carried out using three different types of opposing teeth with different cusp angles. The results demonstrated that all contact points located within the designated regions completely satisfied the required conditions regarding contact and separation during every tooth excursion. It is strongly suggesting that our assisting system has wide range of clinical applicability.
- 社団法人日本生体医工学会の論文
- 2006-12-10
著者
-
Hayashi Toyohiko
Graduate School Of Science And Technology Niigata University
-
Hayashi Toyohiko
Graduate School Of Science And Technology Niigata University:department Of Biocybernetics Faculty Of
-
MARUYAMA Tomoaki
Graduate School of Science and Technology, Niigata University
-
NAKAMURA Yasuo
Department of Biocybernetics, Faculty of Engineering, Niigata University
-
KATO Kazumasa
Institute of Oral Science, Matsumoto Dental University
-
Kato Kazumasa
Institute Of Oral Science Matsumoto Dental University
-
Maruyama Tomoaki
Graduate School Of Science And Technology Niigata University
-
Nakamura Yasuo
Department Of Biocybernetics Faculty Of Engineering Niigata University
関連論文
- A Range-Finder-Based Displacement Meter for Measuring Tooth Mobility in 6 Degrees of Freedom : Measurement Principle and Error Propagation Analysis
- Computer-aided Interference-free Design of Occlusal Surface for Dental 3-D CAD
- Psoas abscess and cellulitis of the right gluteal region resulting from carcinoma of the cecum
- Role of protein kinase C in central muscannic mechanisms regulating voiding in rats
- Experimental device for detecting laryngeal movement during swallowing
- Positional reproducibility of the patient's head normalized by a robotized chair-based automatic head-positioning system, Racs-N
- Automatic head positioning system using PSD-equipped camera-based photostereometry and a 5-degree-of-freedom robotized chair : calibration and accuracy verification
- Controllability of temporomandibular joint loading by coordinative activities of masticatory muscles : a two-dimensional static analysis
- Estimation of the position and orientation of the kinematic axis of the temporomandibular joint
- Function of digastric muscle as regards the controllability of temporomandibular joint loading : A static 2-D analysis using a rigid-body spring model
- Accuracy verification of a PSD-equipped camera-based photostereometric system developed for measuring cranial movements in six degrees of freedom
- Visualization of the Articulation of Replaced Knee Joint Surfaces After Total Knee Arthroplasty
- A stereoselective total synthesis of methyl .ALPHA.-DL-daunosaminide.