UNIGE document Scientific Article
previous document  unige:99512  next document
add to browser collection
Title

Stress distribution difference between Lava Ultimate full crowns and IPS e.max CAD full crowns on a natural tooth and on tooth-shaped implant abutments

Authors
Published in Odontology. 2017, vol. 105, no. 2, p. 254-256
Abstract The goal of this short communication is to present finite element analysis comparison of the stress distribution between CAD/CAM full crowns made of Lava Ultimate and of IPS e.max CAD, adhesively luted to natural teeth and to implant abutments with the shape of natural teeth. Six 3D models were prepared using a 3D content-creating software, based on a micro-CT scan of a human mandibular molar. The geometry of the full crown and of the abutment was the same for all models representing Lava Ultimate full crowns (L) and IPS e.max CAD full crowns (E) on three different abutments: prepared natural tooth (n), titanium abutment (t) and zirconia abutment (z). A static load of 400 N was applied on the vestibular and lingual cusps, and fixtures were applied to the base of the models. After running the static linear analysis, the post-processing data we analyzed. The stress values at the interface between the crown and the abutment of the Lt and Lz groups were significantly higher than the stress values at the same interface of all the other models. The high stress concentration in the adhesive at the interface between the crown and the abutment of the Lava Ultimate group on implants might be one of the factors contributing to the reported debondings of crowns.
Keywords Adhesively luted crownDebondingImplant abutment
Identifiers
PMID: 27848100
Full text
Structures
Research group Groupe Krejci Ivo (médecine dentaire) (240)
Citation
(ISO format)
KREJCI, Ivo, DAHER, René. Stress distribution difference between Lava Ultimate full crowns and IPS e.max CAD full crowns on a natural tooth and on tooth-shaped implant abutments. In: Odontology, 2017, vol. 105, n° 2, p. 254-256. https://archive-ouverte.unige.ch/unige:99512

45 hits

22 downloads

Update

Deposited on : 2017-11-22

Export document
Format :
Citation style :