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Influence of material selection on the risk of inlay fracture during pre-cementation functional occlusal tapping.
Dent Mater. 2011 Feb; 27(2):109-13.DM

Abstract

OBJECTIVE

To evaluate in vitro the pre-cementation resistance of CAD/CAM inlays subjected to functional occlusal tapping.

METHODS

An extracted tooth model (molar and premolar) with simulated bone and periodontal ligament was used to make a medium-size mesio-occlusal inlay preparation (molar). Immediate dentin sealing was applied to the prepared tooth. The corresponding inlays were fabricated with Cerec either using composite resin (Paradigm MZ100) or ceramic (e.max CAD and Mark II) blocks (n=14). A high marginal ridge was designed in order to generate hyper-occlusion. Pre-cementation occlusal tapping was simulated using closed-loop servo-hydraulics at 2 Hz, starting with a load of 40 N, followed by 80, 120, 160, 200, 240, and 280 N (10 cycles each). All samples were loaded until fracture or to a maximum of 70 cycles. Groups were compared using the life table survival analysis (p=0.016, Bonferroni method).

RESULTS

Survival probability was e.max CAD>MZ100>Mark II. None of the specimens survived the 70 cycles except for two e.max CAD inlays (survival: 14%).

SIGNIFICANCE

Material selection has a significant effect on the risk of Cerec inlay fracture during pre-cementation functional occlusal tapping.

Authors+Show Affiliations

Department of Restorative Sciences, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles 90089-7792, USA. magne@usc.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

20934744

Citation

Magne, Pascal, et al. "Influence of Material Selection On the Risk of Inlay Fracture During Pre-cementation Functional Occlusal Tapping." Dental Materials : Official Publication of the Academy of Dental Materials, vol. 27, no. 2, 2011, pp. 109-13.
Magne P, Paranhos MP, Schlichting LH. Influence of material selection on the risk of inlay fracture during pre-cementation functional occlusal tapping. Dent Mater. 2011;27(2):109-13.
Magne, P., Paranhos, M. P., & Schlichting, L. H. (2011). Influence of material selection on the risk of inlay fracture during pre-cementation functional occlusal tapping. Dental Materials : Official Publication of the Academy of Dental Materials, 27(2), 109-13. https://doi.org/10.1016/j.dental.2010.09.002
Magne P, Paranhos MP, Schlichting LH. Influence of Material Selection On the Risk of Inlay Fracture During Pre-cementation Functional Occlusal Tapping. Dent Mater. 2011;27(2):109-13. PubMed PMID: 20934744.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of material selection on the risk of inlay fracture during pre-cementation functional occlusal tapping. AU - Magne,Pascal, AU - Paranhos,Maria P G, AU - Schlichting,Luís H, Y1 - 2010/10/08/ PY - 2009/12/09/received PY - 2010/05/24/revised PY - 2010/09/03/accepted PY - 2010/10/12/entrez PY - 2010/10/12/pubmed PY - 2011/6/3/medline SP - 109 EP - 13 JF - Dental materials : official publication of the Academy of Dental Materials JO - Dent Mater VL - 27 IS - 2 N2 - OBJECTIVE: To evaluate in vitro the pre-cementation resistance of CAD/CAM inlays subjected to functional occlusal tapping. METHODS: An extracted tooth model (molar and premolar) with simulated bone and periodontal ligament was used to make a medium-size mesio-occlusal inlay preparation (molar). Immediate dentin sealing was applied to the prepared tooth. The corresponding inlays were fabricated with Cerec either using composite resin (Paradigm MZ100) or ceramic (e.max CAD and Mark II) blocks (n=14). A high marginal ridge was designed in order to generate hyper-occlusion. Pre-cementation occlusal tapping was simulated using closed-loop servo-hydraulics at 2 Hz, starting with a load of 40 N, followed by 80, 120, 160, 200, 240, and 280 N (10 cycles each). All samples were loaded until fracture or to a maximum of 70 cycles. Groups were compared using the life table survival analysis (p=0.016, Bonferroni method). RESULTS: Survival probability was e.max CAD>MZ100>Mark II. None of the specimens survived the 70 cycles except for two e.max CAD inlays (survival: 14%). SIGNIFICANCE: Material selection has a significant effect on the risk of Cerec inlay fracture during pre-cementation functional occlusal tapping. SN - 1879-0097 UR - https://www.unboundmedicine.com/medline/citation/20934744/Influence_of_material_selection_on_the_risk_of_inlay_fracture_during_pre_cementation_functional_occlusal_tapping_ DB - PRIME DP - Unbound Medicine ER -