National Yang Ming Chiao Tung University

National Taipei University of Technology

Yuan-Min Lin

Shyh-Yuan Lee

Hsu-Wei Fang

Meng-Chun Lin

Pin-Ju Huang

Liang-Yuan Cheng

Chih-Yu Hsu

Jiun-Ming Su

Hsuan Chen

The present invention is directed to a composition of temporary crown materials, comprising a powder reagent and a liquid reagent; wherein the powder reagent comprises PMMA and an initiator, and the liquid reagent comprises MMA, a catalyst, and a plasticizer; wherein the plasticizer is a citrate ester compound. The composition of temporary crown materials of the present invention has high hardness, high toughness, high flexural strength and excellent biocompatibility.

Composition of temporary crown materials

The present disclosure provides a photopolymer composition and the applications thereof. The photopolymer composition comprises: 5 weight percent to 15 weight percent of gelatin methacrylate (GelMA), 0.1 weight percent to 5 weight percent of silanized biologically active additive, 0.1 weight percent to 5 weight percent of photoinitiator, and 75 weight percent to 95 weight percent of a solvent. Compared to a conventional hydrogel, the hydrogel prepared from the photopolymer composition of the present disclosure has improved compressive strength, mechanical strength and stability. Accordingly, the hydrogel is applicable to biomedical research and tissue repair.

Photopolymer composition and application thereof

In this invention, a high-accuracy jaw motion tracking system and method using the same are disclosed. The jaw motion tracking system of the invention mainly comprises an eyewear facebow static positioning device, a lower jaw dynamic tracking device and a stereo-vision charge-coupled device (CCD) and can provide information regarding the locations and relative movement of lower and upper jaws. The eyewear facebow static positioning device has several passive and active reflective markers. The lower jaw dynamic tracking device equips with a plural of lightweight light emitting devices. Using OpenCV-based self-developed algorithm and post-iterative compensator, the disclosed system can record the dynamical jaw movement with a high accuracy. The disclosed jaw motion tracking system and related method have minimal occlusal disturbance and provide smooth motion-tracking performance. The disclosed system can be used in clinical dentistry.

Jaw motion tracking system and operating method using the same

The present invention provides a three-dimensional printing article for making dental products and the preparation method thereof, which comprises: Ethoxylated bisphenol A dimethacrylate, Diurethane dimethacrylate, Triethylene glycol dimethacrylate, and Diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide. It not only improves the present time-consuming and labor-intensive dental device making, but also can be used in mass production of dental devices.

Growing community of inventors

Taipei, Taiwan

Yuan-Min Lin