StomatologyEduJournal1-2015 | Page 77

INTEGRATING DIGITAL TECHNOLOGIES FOR DENTAL PROSTHESES: FROM IMPRESSION TO SINGLE CROWNS. A PILOT STUDY Gianluca Martino Tartaglia, DDS, PhD DDS, PhD, Assistant Professor and Consultant, Department of Biomedical Sciences for Health, Faculty of Medicine, University of Milan, Milano, Italy CV Dr. Gianluca Martino Tartaglia received his D.D.S. degree from the University of Milan School of Dentistry, Italy in 1991, and his Ph.D. in Morphological Sciences from the same university in 1996. He is currently a staff member of the Laboratory of Functional Anatomy of the Stomatognathic Apparatus, and he works in private practice in Milan. He is the author of more than 100 international research papers on the stomatognathic system. In particular, he is an expert in the surface electromyography of masticatory and neck muscles. Questions The most used printers for dental prostheses are: q a. q b. q c. q d. PBP (Powder based printers), where powder is glued by inkjet; SLA (stereolitography), where UV curable resin is cured in the desired shape by light source; SLS (selective laser sintering), where nylon is melted with laser beam; FDM (fusion deposition modeling), where a plastic line is laid down and builds up objects. In the current investigation: q a. q b. q c. q d. Ten patients received one single crown prosthesis each; One patient received 10 single crown prostheses; Five patients received a full arch rehabilitation; Ten patients received one multiple unit prosthesis for anterior teeth. To manufacture the 3d printed models we used q a. q b. q c. q d. JPEG files with RGB color conversion; STL files with approx 100 vertices and 60 faces ; TIFF files with CMYK color conversion ; STL files with approx 350,000 vertices and 600,000 faces. The mean overall time analyses for the dental laboratory was: q a. q b. q c. q d. 100% longer in the group with procedures controlled on traditional plaster models; 80% longer in the group with procedures controlled on 3d printed model; Independent from the kind of procedure control; 40-50% longer in the group with procedures controlled on traditional plaster models. 167