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Marginal adaptation and fracture resistance of feldspathic and polymer-infiltrated ceramic network CAD/CAM endocrowns for maxillary premolars.
Niger J Clin Pract. 2020 Jan; 23(1):1-6.NJ

Abstract

OBJECTIVE

The aim of this study was to evaluate the marginal adaptation and fracture resistance of feldspathic and Polymer-Infiltrated Ceramic Network (PICN) CAD/CAM endocrowns for maxillary premolars.

MATERIALS AND METHODS

Twenty extracted human permanent maxillary premolars were randomly divided into two groups (n = 10); Group CEREC (GC), which was produced by feldspathic ceramic and the Group Enamic (GE), which was produced by PICN. All teeth were endodontically treated and decoronated horizontally at 2 mm above the cemento-enamel junction. Endocrown preparations were done with 4 mm depth into the pulp chamber. Endocrowns were manufactured using CAD/CAM from ceramic blocks. Following adhesive cementation, all specimens were subjected to thermocycling. Marginal adaptation evaluated under SEM at 200 × magnification. Each specimen was fixed in a universal testing machine and a compressive load was applied at 45° to long axis of the teeth until failure. Failure load was recorded and failure modes were evaluated. Statistical analyses were performed with SPSS 19.0 software and data were compared using Mann-Whitney U test.

RESULTS

There were no significant differences in the marginal adaptation between two groups (P > 0.05). GE presented significantly higher fracture resistance when compared to GC (P < 0.05). Failure pattern was similar and characterized by the tooth-ceramic fracture on the force-applied side.

CONCLUSIONS

CAD/CAM fabricated feldspathic ceramic and PICN endocrowns provide sufficient marginal adaptation, but the PICN endocrowns shows higher fracture resistance than the feldspathic ceramic endocrowns.

Authors+Show Affiliations

Department of Prosthodontics, Faculty of Dentistry, Zonguldak Bülent Ecevit University, Zonguldak, Turkey.Department of Prosthodontics, Faculty of Dentistry, Zonguldak Bülent Ecevit University, Zonguldak, Turkey.Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31929199

Citation

Saglam, G, et al. "Marginal Adaptation and Fracture Resistance of Feldspathic and Polymer-infiltrated Ceramic Network CAD/CAM Endocrowns for Maxillary Premolars." Nigerian Journal of Clinical Practice, vol. 23, no. 1, 2020, pp. 1-6.
Saglam G, Cengiz S, Karacaer O. Marginal adaptation and fracture resistance of feldspathic and polymer-infiltrated ceramic network CAD/CAM endocrowns for maxillary premolars. Niger J Clin Pract. 2020;23(1):1-6.
Saglam, G., Cengiz, S., & Karacaer, O. (2020). Marginal adaptation and fracture resistance of feldspathic and polymer-infiltrated ceramic network CAD/CAM endocrowns for maxillary premolars. Nigerian Journal of Clinical Practice, 23(1), 1-6. https://doi.org/10.4103/njcp.njcp_231_19
Saglam G, Cengiz S, Karacaer O. Marginal Adaptation and Fracture Resistance of Feldspathic and Polymer-infiltrated Ceramic Network CAD/CAM Endocrowns for Maxillary Premolars. Niger J Clin Pract. 2020;23(1):1-6. PubMed PMID: 31929199.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Marginal adaptation and fracture resistance of feldspathic and polymer-infiltrated ceramic network CAD/CAM endocrowns for maxillary premolars. AU - Saglam,G, AU - Cengiz,S, AU - Karacaer,O, PY - 2020/1/14/entrez PY - 2020/1/14/pubmed PY - 2020/4/11/medline KW - Endocrown KW - feldspathic ceramic KW - fracture resistance KW - marginal adaptation KW - polymer-infiltrated ceramic network SP - 1 EP - 6 JF - Nigerian journal of clinical practice JO - Niger J Clin Pract VL - 23 IS - 1 N2 - OBJECTIVE: The aim of this study was to evaluate the marginal adaptation and fracture resistance of feldspathic and Polymer-Infiltrated Ceramic Network (PICN) CAD/CAM endocrowns for maxillary premolars. MATERIALS AND METHODS: Twenty extracted human permanent maxillary premolars were randomly divided into two groups (n = 10); Group CEREC (GC), which was produced by feldspathic ceramic and the Group Enamic (GE), which was produced by PICN. All teeth were endodontically treated and decoronated horizontally at 2 mm above the cemento-enamel junction. Endocrown preparations were done with 4 mm depth into the pulp chamber. Endocrowns were manufactured using CAD/CAM from ceramic blocks. Following adhesive cementation, all specimens were subjected to thermocycling. Marginal adaptation evaluated under SEM at 200 × magnification. Each specimen was fixed in a universal testing machine and a compressive load was applied at 45° to long axis of the teeth until failure. Failure load was recorded and failure modes were evaluated. Statistical analyses were performed with SPSS 19.0 software and data were compared using Mann-Whitney U test. RESULTS: There were no significant differences in the marginal adaptation between two groups (P > 0.05). GE presented significantly higher fracture resistance when compared to GC (P < 0.05). Failure pattern was similar and characterized by the tooth-ceramic fracture on the force-applied side. CONCLUSIONS: CAD/CAM fabricated feldspathic ceramic and PICN endocrowns provide sufficient marginal adaptation, but the PICN endocrowns shows higher fracture resistance than the feldspathic ceramic endocrowns. SN - 1119-3077 UR - https://www.unboundmedicine.com/medline/citation/31929199/Marginal_adaptation_and_fracture_resistance_of_feldspathic_and_polymer_infiltrated_ceramic_network_CAD/CAM_endocrowns_for_maxillary_premolars_ L2 - http://www.njcponline.com/article.asp?issn=1119-3077;year=2020;volume=23;issue=1;spage=1;epage=6;aulast=Saglam DB - PRIME DP - Unbound Medicine ER -