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Fatigue performance of adhesively cemented glass-, hybrid- and resin-ceramic materials for CAD/CAM monolithic restorations.
Dent Mater. 2019 04; 35(4):534-542.DM

Abstract

OBJECTIVE

To evaluate the fatigue failure load, number of cycles until failure, and survival probability of adhesively cemented materials with different microstructures (glass-, hybrid- and resin-ceramic) used to manufacture CAD/CAM monolithic restorations.

METHODS

Disc-shaped specimens (n=15; Ø=10mm; thickness=1.0mm) were produced from CAD/CAM blocks as follows: feldspathic (FEL); leucite (LEU); lithium disilicate (LD); zirconia-reinforced lithium silicate (ZRLS); polymer-infiltrated ceramic network (PICN); and resin nanoceramic (RNC). Adhesive cementation was performed onto epoxy discs (dentin analogue- Ø=10mm; thickness=2.5mm). The cemented assemblies were subjected to fatigue testing using a step-stress approach (400N-2200N; step-size of 200N; 10,000 cycles per step; 1.4Hz). Fatigue data were analyzed using Kaplan-Meier and Mantel-Cox (log-rank) tests (p<0.05) and Weibull statistical analysis. Fractographic analysis was also performed.

RESULTS

All RNC specimens survived the fatigue test (100% probability of survival at 2200N; 100,000 cycles) and presented occlusal deformation in response to loading, while all other tested materials failed in distinct loading steps with radial cracks starting from the bonding surface. LD (1146.7N; 47,333) and ZRLS (1013.3N; 40,666) materials obtained the highest fatigue failure loads and cycles until failure, meanwhile all PICN specimens failed during the first step (0% probability of survival at 400N; 10,000). FEL had similar Weibull modulus to LD and ZRLS and higher than LEU for both load and number of cycles outcomes.

SIGNIFICANCE

The microstructure of adhesively cemented glass-, hybrid- and resin-ceramic CAD/CAM restorative materials influence their response during fatigue testing, which aids in suggesting the best clinical indications.

Authors+Show Affiliations

PhD Graduate Program in Oral Science (Prosthodontics Unit), Faculty of Odontology, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil. Electronic address: andressa.venturini@hotmail.com.PhD Graduate Program in Oral Science (Prosthodontics Unit), Faculty of Odontology, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil. Electronic address: catinaprochnow@hotmail.com.PhD Graduate Program in Oral Science (Prosthodontics Unit), Faculty of Odontology, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil; MSciD Graduate Program, School of Dentistry, Meridional Faculty - IMED, Passo Fundo, Rio Grande do Sul, Brazil. Electronic address: gabrielkrpereira@hotmail.com.Private Clinic, Santa Maria, Rio Grande do Sul, Brazil. Electronic address: 36890@ufp.edu.pt.Department of Dental Materials Science, Academic Centre for Dentistry Amsterdam (ACTA), Universiteit van Amsterdam and Vrije Universiteit, Amsterdam, The Netherlands. Electronic address: c.kleverlaan@acta.nl.PhD Graduate Program in Oral Science (Prosthodontics Unit), Faculty of Odontology, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil. Electronic address: lfvalandro@hotmail.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30686711

Citation

Venturini, Andressa B., et al. "Fatigue Performance of Adhesively Cemented Glass-, Hybrid- and Resin-ceramic Materials for CAD/CAM Monolithic Restorations." Dental Materials : Official Publication of the Academy of Dental Materials, vol. 35, no. 4, 2019, pp. 534-542.
Venturini AB, Prochnow C, Pereira GKR, et al. Fatigue performance of adhesively cemented glass-, hybrid- and resin-ceramic materials for CAD/CAM monolithic restorations. Dent Mater. 2019;35(4):534-542.
Venturini, A. B., Prochnow, C., Pereira, G. K. R., Segala, R. D., Kleverlaan, C. J., & Valandro, L. F. (2019). Fatigue performance of adhesively cemented glass-, hybrid- and resin-ceramic materials for CAD/CAM monolithic restorations. Dental Materials : Official Publication of the Academy of Dental Materials, 35(4), 534-542. https://doi.org/10.1016/j.dental.2019.01.013
Venturini AB, et al. Fatigue Performance of Adhesively Cemented Glass-, Hybrid- and Resin-ceramic Materials for CAD/CAM Monolithic Restorations. Dent Mater. 2019;35(4):534-542. PubMed PMID: 30686711.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fatigue performance of adhesively cemented glass-, hybrid- and resin-ceramic materials for CAD/CAM monolithic restorations. AU - Venturini,Andressa B, AU - Prochnow,Catina, AU - Pereira,Gabriel K R, AU - Segala,Rodrigo D, AU - Kleverlaan,Cornelis J, AU - Valandro,Luiz Felipe, Y1 - 2019/01/25/ PY - 2018/06/10/received PY - 2018/12/06/revised PY - 2019/01/11/accepted PY - 2019/1/29/pubmed PY - 2019/10/23/medline PY - 2019/1/29/entrez KW - CAD/CAM blocks KW - IPS Empress CAD KW - IPS e.max CAD KW - Lava Ultimate KW - Mechanical cycling KW - Vita Enamic KW - Vita Mark II KW - Vita Suprinity SP - 534 EP - 542 JF - Dental materials : official publication of the Academy of Dental Materials JO - Dent Mater VL - 35 IS - 4 N2 - OBJECTIVE: To evaluate the fatigue failure load, number of cycles until failure, and survival probability of adhesively cemented materials with different microstructures (glass-, hybrid- and resin-ceramic) used to manufacture CAD/CAM monolithic restorations. METHODS: Disc-shaped specimens (n=15; Ø=10mm; thickness=1.0mm) were produced from CAD/CAM blocks as follows: feldspathic (FEL); leucite (LEU); lithium disilicate (LD); zirconia-reinforced lithium silicate (ZRLS); polymer-infiltrated ceramic network (PICN); and resin nanoceramic (RNC). Adhesive cementation was performed onto epoxy discs (dentin analogue- Ø=10mm; thickness=2.5mm). The cemented assemblies were subjected to fatigue testing using a step-stress approach (400N-2200N; step-size of 200N; 10,000 cycles per step; 1.4Hz). Fatigue data were analyzed using Kaplan-Meier and Mantel-Cox (log-rank) tests (p<0.05) and Weibull statistical analysis. Fractographic analysis was also performed. RESULTS: All RNC specimens survived the fatigue test (100% probability of survival at 2200N; 100,000 cycles) and presented occlusal deformation in response to loading, while all other tested materials failed in distinct loading steps with radial cracks starting from the bonding surface. LD (1146.7N; 47,333) and ZRLS (1013.3N; 40,666) materials obtained the highest fatigue failure loads and cycles until failure, meanwhile all PICN specimens failed during the first step (0% probability of survival at 400N; 10,000). FEL had similar Weibull modulus to LD and ZRLS and higher than LEU for both load and number of cycles outcomes. SIGNIFICANCE: The microstructure of adhesively cemented glass-, hybrid- and resin-ceramic CAD/CAM restorative materials influence their response during fatigue testing, which aids in suggesting the best clinical indications. SN - 1879-0097 UR - https://www.unboundmedicine.com/medline/citation/30686711/Fatigue_performance_of_adhesively_cemented_glass__hybrid__and_resin_ceramic_materials_for_CAD/CAM_monolithic_restorations_ DB - PRIME DP - Unbound Medicine ER -