Analysis of fitness of prosthetic bridge designed and produced with digital methods

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Analysis of fitness of prosthetic bridge designed and produced with digital methods

Journal Title: Prosthodontics - Year 2018, Vol 68, Issue 1

Abstract

Introduction. In recent years the digitalization of dentistry has taken a special place in the world of scientific research. With the development of scanning methods and the improvement of software for the analysis and designing of three-dimensional objects, as well as the adaptation of milling techniques and additive technologies for dentistry applications in many clinical cases it is possible to replace the conventional procedure of prosthetic restoration with the digital process. It should be emphasized that the need of further thorough research is recommended especially on the accuracy of elements obtained with intraoral scanning and their production with additive technologies. Aim of the study. Analysis of marginal and internal fit of a prosthetic bridge designed and produced using digital methods. Material and methods. On the model of the jaw abutment teeth have been prepared to make a bridge. Using the intraoral scanner dental arches were scanned. The digital design was performed which was then printed using DMLS technology. The prosthetic restoration was 3D scanned in order to obtain a digital geometry which was processed with specialized software. The bridge fitting analysis to the CAD model of the abutment teeth was performed. Results. Heat map analysis allows to determine the high accuracy of bridge fitting within the abutment teeth. From 50 measurement points an average value of 0.0136 with a standard deviation of 0.0768 was obtained. The minimum value was -0.21, maximum 0.17. Discussion. As it results from the study and reports in the literature in many clinical situations it is possible to perform a completely digital procedure of producing prosthetic restorations. In vitro studies show the potential clinical usefulness of digital methods, however, most authors agree on the need of thorough clinical trials before fully recommending the application of completely digital procedures. The use of the developed methodology allows to perform further research on the accuracy of these technologies. Conclusions. The obtained results indicate the accuracy of producing prosthetic restoration with digital techniques. Application of these technologies allows to produce bridge characterized by high precision. The reverse engineering method can be used to numerically determine parameters which are relevant from the point of view of medical applications.<br/><br/>

Authors and Affiliations

Daniel Surowiecki, Jan Wierzba, Roman Grygoruk, Kamila Wróbel-Bednarz

Keywords

EP ID EP273118
DOI 10.5604/01.3001.0011.6805
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