13 March 2009 Marginal adaptation analysis performed with en face optical coherence tomography in fixed partial dentures
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Proceedings Volume 7258, Medical Imaging 2009: Physics of Medical Imaging; 72584H (2009) https://doi.org/10.1117/12.813922
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States
Abstract
Frameworks for fixed partial denture made out of dental alloys thought classic techniques currently involve many errors like marginal and internal gaps. The aim of this study is to present alternative technologies in making frameworks from dental alloys using selective laser sintering/ selective laser melting (SLS/ SLM) and to investigate the marginal adaptation of the fixed dental prostheses using the en face optical coherence tomography. These procedures imply the use of a scanning device PROBIS, SMART OPTICS with the help of 3D Dental Scanner software. For digitizing the 3D model we used the Dental Wings Kunde Software. The files obtained were sent to a SLS/ SLM machine, Hint-Els rapidPro, where the CoCr powder was sintered/melt by selectively consolidating successive layers of powder material on top of each other, using thermal energy supplied by a focused and computer controlled laser beam. Through this technique can be produced up to 80 pieces in only one step. A parallel between the classic casting technique and this new technology reveal the least has several advantages: fast finishing time, excellent marginal and internal fit, biocompatibility and superior chemical properties. SLS/ SLM proved to be a promising technology that may overcome the classic ones, because of the superior marginal fit of the fixed dental prostheses to the teeth.
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Cosmin Sinescu, Meda Lavinia Negrutiu, Sergiu Antonie, George Dobre, Adrian Bradu, Michael Hughes, Mihai Rominu, Adrian Gh. Podoleanu, "Marginal adaptation analysis performed with en face optical coherence tomography in fixed partial dentures", Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72584H (13 March 2009); doi: 10.1117/12.813922; https://doi.org/10.1117/12.813922
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