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Fracture strengths of endocrown restorations fabricated with different preparation depths and CAD/CAM materials.
Dent Mater J. 2018 Mar 30; 37(2):256-265.DM

Abstract

The objectives of this study were to compare the fracture strength of endocrown restorations fabricated with different preparation depth and various CAD/CAM ceramics, and to assess the fracture types. Endodontically treated 100 extracted human permanent maxillary centrals were divided into two preparation depth groups as short (S: 3-mm-deep) and long (L: 6-mm-deep), then five ceramic subgroups, namely: feldspathic-ceramic (Vita Mark II-VM2), lithium-disilicate glass-ceramic (IPS e.max CAD-E.max), resin-ceramic (LAVA Ultimate-LU), polymer infiltrated ceramic (Vita Enamic-VE) and monoblock zirconia (inCoris TZI-TZI) (n=10/subgroup). The endocrowns were fabricated by CAD/CAM and were cemented with resin cement (RelyX U200). The teeth were thermally cycled (5,000cycles) and fracture tests were performed at 45º angle to the teeth. The data were statistically analyzed (Kruskal-Wallis, Mann Whitney U), failure modes were evaluated with stereomicroscopy. Zirconia group provided the statistically highest fracture strength, but also exhibited non-repairable failures. Preparation depth has an effect on the fracture strength only for feldspathic ceramic.

Authors+Show Affiliations

Department of Prosthodontics, Kocaeli University, Faculty of Dentistry.Department of Prosthodontics, Kocaeli University, Faculty of Dentistry.Department of Prosthodontics, Kocaeli University, Faculty of Dentistry.Department of Endodontics, Kocaeli University, Faculty of Dentistry.Department of Machine and Metal Technologies, Kocaeli University, Ford Otosan İhsaniye Automotive Vocational School.Department of Mechanical Engineering, Kocaeli University, Faculty of Engineering.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29311428

Citation

Kanat-Ertürk, Burcu, et al. "Fracture Strengths of Endocrown Restorations Fabricated With Different Preparation Depths and CAD/CAM Materials." Dental Materials Journal, vol. 37, no. 2, 2018, pp. 256-265.
Kanat-Ertürk B, Saridağ S, Köseler E, et al. Fracture strengths of endocrown restorations fabricated with different preparation depths and CAD/CAM materials. Dent Mater J. 2018;37(2):256-265.
Kanat-Ertürk, B., Saridağ, S., Köseler, E., Helvacioğlu-Yiğit, D., Avcu, E., & Yildiran-Avcu, Y. (2018). Fracture strengths of endocrown restorations fabricated with different preparation depths and CAD/CAM materials. Dental Materials Journal, 37(2), 256-265. https://doi.org/10.4012/dmj.2017-035
Kanat-Ertürk B, et al. Fracture Strengths of Endocrown Restorations Fabricated With Different Preparation Depths and CAD/CAM Materials. Dent Mater J. 2018 Mar 30;37(2):256-265. PubMed PMID: 29311428.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fracture strengths of endocrown restorations fabricated with different preparation depths and CAD/CAM materials. AU - Kanat-Ertürk,Burcu, AU - Saridağ,Serkan, AU - Köseler,Ege, AU - Helvacioğlu-Yiğit,Dilek, AU - Avcu,Egemen, AU - Yildiran-Avcu,Yasemin, Y1 - 2017/12/29/ PY - 2018/1/10/pubmed PY - 2018/12/12/medline PY - 2018/1/10/entrez KW - CAD/CAM KW - Endocrown restoration KW - Fracture strength KW - Full ceramic KW - Preparation depth SP - 256 EP - 265 JF - Dental materials journal JO - Dent Mater J VL - 37 IS - 2 N2 - The objectives of this study were to compare the fracture strength of endocrown restorations fabricated with different preparation depth and various CAD/CAM ceramics, and to assess the fracture types. Endodontically treated 100 extracted human permanent maxillary centrals were divided into two preparation depth groups as short (S: 3-mm-deep) and long (L: 6-mm-deep), then five ceramic subgroups, namely: feldspathic-ceramic (Vita Mark II-VM2), lithium-disilicate glass-ceramic (IPS e.max CAD-E.max), resin-ceramic (LAVA Ultimate-LU), polymer infiltrated ceramic (Vita Enamic-VE) and monoblock zirconia (inCoris TZI-TZI) (n=10/subgroup). The endocrowns were fabricated by CAD/CAM and were cemented with resin cement (RelyX U200). The teeth were thermally cycled (5,000cycles) and fracture tests were performed at 45º angle to the teeth. The data were statistically analyzed (Kruskal-Wallis, Mann Whitney U), failure modes were evaluated with stereomicroscopy. Zirconia group provided the statistically highest fracture strength, but also exhibited non-repairable failures. Preparation depth has an effect on the fracture strength only for feldspathic ceramic. SN - 1881-1361 UR - https://www.unboundmedicine.com/medline/citation/29311428/Fracture_strengths_of_endocrown_restorations_fabricated_with_different_preparation_depths_and_CAD/CAM_materials_ L2 - https://dx.doi.org/10.4012/dmj.2017-035 DB - PRIME DP - Unbound Medicine ER -