Article ID Journal Published Year Pages File Type
5640658 Journal of Dentistry 2016 9 Pages PDF
Abstract

ObjectivesTo evaluate the biomechanical influence of reconnecting the buccal and lingual walls of endodontically treated lower molar with a large MOD cavity.Methods3D 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).ResultsThis 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.ConclusionsMechanically reconnecting the remaining tooth structures has a direct positive effect on stress distribution and deformation of the remaining structures.Clinical relevanceReinforcing 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.

Related Topics
Health Sciences Medicine and Dentistry Dentistry, Oral Surgery and Medicine
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