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Novel non-invasive reinforcement of MOD cavities on endodontically treated teeth

Feilzer, Albert
Published in Journal of Dentistry. 2016, vol. 54, p. 77-85
Abstract Objectives: To evaluate the biomechanical influence of reconnecting the buccal and lingual walls of endodontically treated lower molar with a large MOD cavity. Methods: 3D models were created from a micro-CT scan of an extracted intact lower human molar. Finite element analysis was then used to compare the stress distribution and displacement of the structures between different models: Unrestored MOD on ETT (Unrest), MOD on ETT restored with composite resin (Norm), MOD on ETT reinforced with a non-invasive ring (Ring) and intact tooth as the control (Int). Results: This study showed that the Unrest model presented the highest stress values at the cervical level. The non-invasive Ring model showed the lowest stress values at the cervical level, and the lowest deflection of the cusps. Conclusions: Mechanically reconnecting the remaining tooth structures has a direct positive effect on stress distribution and deformation of the remaining structures. Clinical relevance: Reinforcing ETT in a non-invasive direct approach is efficient in terms of preserving sound tooth structures, reducing the time of treatment and eliminating the laboratory steps required to create the restorations.
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Research group Groupe Krejci Ivo (médecine dentaire) (240)
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DAHER, René, FEILZER, Albert, KREJCI, Ivo. Novel non-invasive reinforcement of MOD cavities on endodontically treated teeth. In: Journal of Dentistry, 2016, vol. 54, p. 77-85. doi: 10.1016/j.jdent.2016.09.008 https://archive-ouverte.unige.ch/unige:89715

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Deposited on : 2016-12-01

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