Activity

PRACTICES A set of plaster types of regular topics had been chosen. The designs had been scanned by laboratory scanner 3shape E4 and the data had been exported in a stereolithography extendable. In 3D evaluation software Geomagic Studio 2013 and Geomagic Qualify 2013, the corresponding link between 3D occlusal contact distribution and occlusal contact area were obtained through three digital evaluation methods “3D shade difference map method”, “point cloud analysis method”, and “virtual articulating paper strategy”. The occlusal contact distribution and occlusal contact area were additionally gotten by two standard occlusal analysis methods “silicone interocclusal recording material strategy” and “scanned articulating report level technique”. A threshea of dental model. The outcome obtained by these procedures can serve as recommendations when it comes to digital occlusal area design of dental care prosthesis and medical occlusal analysis.OBJECTIVE To evaluate thioredoxinreductas the three-dimensional (3D) repair reliability associated with the intercuspal occlusion (ICO) associated with dental casts, by the dental care articulator position method, and supply a reference for clinical application. TECHNIQUES The standard dental casts in ICO had been attached to typical values articulator, and five sets of milling resin cylinders had been respectively attached to the base of both the casts. 100 μm articulating paper and occlusal record silicone polymer plastic were used to identify the occlusal contact quantity involving the posterior teeth of casts attached to articulator in ICO. The occlusal contact figures NA recognized by the two practices had been determined simultaneously, because the guide. Following the top and lower casts were scanned independently, in addition to buccal data of casts in ICO were scanned utilizing the help regarding the dental care articulator position, registration was done using the subscription software. Then digital casts mounted in ICO along with the buccal occlusal data were conserved in standard tessellatiosite cylinder was (0.232±0.089) mm. There was clearly no statistical distinction between the feature things 5-5′, while there were statistical differences between the other feature points. SUMMARY By the dental articulator position technique, the design scanner reproduces the occlusal contact point with high sensitiveness and PPV, and that fits medical needs. Meanwhile, the distance between your function things is more than the guide price, that will induce occlusal disturbance, and need medical grinding.OBJECTIVE to produce a reference for making use of intraoral scanners to make clinical diagnostic dentures of edentulous jaws by evaluating the precision of three intraoral scanners for major impression and jaw connection record of edentulous jaws. METHODS this research included 6 primary impressions of this edentulous clients. Each of the impressions consisted of the maxillary main impression, the mandibular major impression and the jaw connection record. For each of them, a dental cast scanner (Dentscan Y500) had been utilized to acquire stereolithography (STL) data as guide scan, then three intraoral scanners including i500, Trios 3 and CEREC Primescan were used for 3 times to acquire STL data as experiment teams. In Geomagic Studio 2013 computer software, trueness was gotten by researching test groups with the research scan, plus the precision ended up being gotten from intragroup comparisons. Registered maxillary data for the intraoral scan with research scan, the morphological error of jaw connection record was obtained (0.62±0.18) mm, and (0.53±0.53) mm for anterior and posterior instructions; (0.95±0.59) mm, (0.69±0.45) mm, and (0.60±0.22) mm for left and correct instructions. The displacement associated with the jaw position associated with three scanners in vertical measurement, anterior and posterior directions and also the left and correct instructions were inside the 95% consistency limit. CONCLUSION Three intraoral scanners showed great trueness and accuracy. The i500 and Trios 3 scanners had more errors in jaw connection record, but they were utilized as main jaw relation record. It is suggested that three intraoral scanners can be utilized for getting electronic data in order to make diagnostic dentures and specific trays, reducing feasible deforming or crack when delivering impressions from center to laboratory.OBJECTIVE to evaluate the relationship between the width associated with maxillary anterior teeth and the anterior arch border, to analyze the alteration rule associated with width associated with the anterior teeth together with anterior arch perimeter, when modified the convexity regarding the anterior arch, using the width regarding the maxillary anterior arch keeping continual, and to provide a reliable basis for later on digitized and personalized aesthetic analysis of front teeth. TECHNIQUES In the study, 61 front teeth complete and well-arranged models was in fact chosen from the working models after the prostheses in division of Prosthodontics, Peking University School and Hospital of Stomatology, including 22 male designs and 39 feminine designs. An image had been extracted from the occlusal surface of every model using the fixed magnification with just one lens reflex camera. The width of anterior teeth, the width of anterior arch therefore the convexity of anterior arch was indeed calculated utilising the Photoshop software.