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Evaluation of the Adaptation and Fracture Resistance of Three CAD-CAM Resin Ceramics: An In vitro Study.
J Contemp Dent Pract. 2019 May 01; 20(5):571-576.JC

Abstract

AIM

The internal fit and resistance to fracture of resin ceramics are to be evaluated compared to that of lithium disilicate as the control group.

MATERIALS AND METHODS

Four groups of 20 crowns each (GC Cerasmart, Vita Enamic, Coltène Brilliant Crios, and e.max CAD) were cemented on identical metal dies. Marginal gaps were measured before cementation and load to fracture was applied after cementation, half of each group was thermodynamically aged (3,000 cycles of 5° to 55° immersion followed by 200,000 cycles of 100 N load), finally the crowns were loaded until fracture in a universal testing machine. Statistical package for social sciences (SPSS) package 23 was used for statistical work.

RESULTS

Marginal gaps ranged between 68.5 ± 23.8 µm and 87 ± 29.1 µm while occlusal gaps ranged from 220.7 ± 33.3 µm to 275.5 ± 46.5 µm and were not significantly different between groups. Fracture loads ranged from 633.8 ± 127.3 N to 1596.4 ± 497.7 N with lithium disilicate glass ceramics (LDGCs) and Enamic having higher values than resin nano-ceramics (RNCs). The fracture resistance was more related to material than aging and gap value.

CONCLUSION

The margin adaptation of resin ceramics was comparable to lithium disilicate with no significant difference. Lithium disilicate showed a higher resistance than resin ceramics and there was a higher resistance to fracture for polymer-infiltrated ceramic-network (PICN) than RNCs.

CLINICAL SIGNIFICANCE

Resin ceramics can have marginal adaptation and fracture resistance within clinical acceptance; therefore, they can be a good chair-side solution achieved in a single appointment session.

Authors+Show Affiliations

Department of Prosthodontics, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon, Phone: +961 3300122, e-mail: drnic961@gmail.com.Department of Endodontics, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon; Faculty of Dental Medicine, Siena University, Siena SI, Italy.Department of Dental Materials, Faculty of Dental Medicine, Zurich University, Zurich, Switzerland.Faculty of Science, Lebanese University, Beirut, Lebanon.Research Center and Department of Prosthodontics, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31316020

Citation

Naffah, Nicolas, et al. "Evaluation of the Adaptation and Fracture Resistance of Three CAD-CAM Resin Ceramics: an in Vitro Study." The Journal of Contemporary Dental Practice, vol. 20, no. 5, 2019, pp. 571-576.
Naffah N, Ounsi H, Ozcan M, et al. Evaluation of the Adaptation and Fracture Resistance of Three CAD-CAM Resin Ceramics: An In vitro Study. J Contemp Dent Pract. 2019;20(5):571-576.
Naffah, N., Ounsi, H., Ozcan, M., Bassal, H., & Salameh, Z. (2019). Evaluation of the Adaptation and Fracture Resistance of Three CAD-CAM Resin Ceramics: An In vitro Study. The Journal of Contemporary Dental Practice, 20(5), 571-576.
Naffah N, et al. Evaluation of the Adaptation and Fracture Resistance of Three CAD-CAM Resin Ceramics: an in Vitro Study. J Contemp Dent Pract. 2019 May 1;20(5):571-576. PubMed PMID: 31316020.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of the Adaptation and Fracture Resistance of Three CAD-CAM Resin Ceramics: An In vitro Study. AU - Naffah,Nicolas, AU - Ounsi,Hani, AU - Ozcan,Mutlu, AU - Bassal,Hsein, AU - Salameh,Ziad, Y1 - 2019/05/01/ PY - 2019/7/19/entrez PY - 2019/7/19/pubmed PY - 2019/10/30/medline KW - Fracture resistance KW - Internal fit KW - Lithium disilicate Resin ceramics. SP - 571 EP - 576 JF - The journal of contemporary dental practice JO - J Contemp Dent Pract VL - 20 IS - 5 N2 - AIM: The internal fit and resistance to fracture of resin ceramics are to be evaluated compared to that of lithium disilicate as the control group. MATERIALS AND METHODS: Four groups of 20 crowns each (GC Cerasmart, Vita Enamic, Coltène Brilliant Crios, and e.max CAD) were cemented on identical metal dies. Marginal gaps were measured before cementation and load to fracture was applied after cementation, half of each group was thermodynamically aged (3,000 cycles of 5° to 55° immersion followed by 200,000 cycles of 100 N load), finally the crowns were loaded until fracture in a universal testing machine. Statistical package for social sciences (SPSS) package 23 was used for statistical work. RESULTS: Marginal gaps ranged between 68.5 ± 23.8 µm and 87 ± 29.1 µm while occlusal gaps ranged from 220.7 ± 33.3 µm to 275.5 ± 46.5 µm and were not significantly different between groups. Fracture loads ranged from 633.8 ± 127.3 N to 1596.4 ± 497.7 N with lithium disilicate glass ceramics (LDGCs) and Enamic having higher values than resin nano-ceramics (RNCs). The fracture resistance was more related to material than aging and gap value. CONCLUSION: The margin adaptation of resin ceramics was comparable to lithium disilicate with no significant difference. Lithium disilicate showed a higher resistance than resin ceramics and there was a higher resistance to fracture for polymer-infiltrated ceramic-network (PICN) than RNCs. CLINICAL SIGNIFICANCE: Resin ceramics can have marginal adaptation and fracture resistance within clinical acceptance; therefore, they can be a good chair-side solution achieved in a single appointment session. SN - 1526-3711 UR - https://www.unboundmedicine.com/medline/citation/31316020/Evaluation_of_the_Adaptation_and_Fracture_Resistance_of_Three_CAD_CAM_Resin_Ceramics:_An_In_vitro_Study_ DB - PRIME DP - Unbound Medicine ER -
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