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Fracture strength of teeth restored with all-ceramic posts and cores.
Quintessence Int. 2006 Apr; 37(4):289-95.QI

Abstract

OBJECTIVE

The purpose of this in vitro investigation was to evaluate the fracture strength of endodontically treated teeth restored with different all-ceramic posts and cores.

METHOD AND MATERIALS

Seventy-two endodontically treated human maxillary central incisors were divided into 3 groups with 24 teeth each and restored with 1 of the following methods: prefabricated zirconia ceramic posts and resin composite buildups; zirconia ceramic posts and copy-milled alumina ceramic cores (2-piece technique), or copy-milled all-ceramic posts and cores made from a zirconia-reinforced glass-infiltrated alumina ceramic (1-piece technique). Each group was divided into 3 subgroups of 8 samples each, consisting of teeth that did not receive crown restorations and were stored for 60 days, teeth restored with all-ceramic crowns and stored for 60 days, and teeth restored with all-ceramic crowns and subjected to 1.2 million loading cycles with 30 N in a chewing simulator.

RESULTS

The mean fracture strengths ranged from 205 to 522 N. Prefabricated zirconia posts and resin composite buildups showed a statistically significantly lower fracture strength after chewing simulation than teeth restored with prefabricated zirconia posts and alumina ceramic cores.

CONCLUSION

All-ceramic posts and cores made with the 2-piece technique showed promising fracture strengths under the tested conditions.

Authors+Show Affiliations

Department of Prosthodontics, Propaedeutic, and Dental Materials, School of Dentistry, Christian-Albrechts University, Kiel, Germany.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16594360

Citation

Friedel, Wiebke, and Matthias Kern. "Fracture Strength of Teeth Restored With All-ceramic Posts and Cores." Quintessence International (Berlin, Germany : 1985), vol. 37, no. 4, 2006, pp. 289-95.
Friedel W, Kern M. Fracture strength of teeth restored with all-ceramic posts and cores. Quintessence Int. 2006;37(4):289-95.
Friedel, W., & Kern, M. (2006). Fracture strength of teeth restored with all-ceramic posts and cores. Quintessence International (Berlin, Germany : 1985), 37(4), 289-95.
Friedel W, Kern M. Fracture Strength of Teeth Restored With All-ceramic Posts and Cores. Quintessence Int. 2006;37(4):289-95. PubMed PMID: 16594360.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fracture strength of teeth restored with all-ceramic posts and cores. AU - Friedel,Wiebke, AU - Kern,Matthias, PY - 2006/4/6/pubmed PY - 2006/5/5/medline PY - 2006/4/6/entrez SP - 289 EP - 95 JF - Quintessence international (Berlin, Germany : 1985) JO - Quintessence Int VL - 37 IS - 4 N2 - OBJECTIVE: The purpose of this in vitro investigation was to evaluate the fracture strength of endodontically treated teeth restored with different all-ceramic posts and cores. METHOD AND MATERIALS: Seventy-two endodontically treated human maxillary central incisors were divided into 3 groups with 24 teeth each and restored with 1 of the following methods: prefabricated zirconia ceramic posts and resin composite buildups; zirconia ceramic posts and copy-milled alumina ceramic cores (2-piece technique), or copy-milled all-ceramic posts and cores made from a zirconia-reinforced glass-infiltrated alumina ceramic (1-piece technique). Each group was divided into 3 subgroups of 8 samples each, consisting of teeth that did not receive crown restorations and were stored for 60 days, teeth restored with all-ceramic crowns and stored for 60 days, and teeth restored with all-ceramic crowns and subjected to 1.2 million loading cycles with 30 N in a chewing simulator. RESULTS: The mean fracture strengths ranged from 205 to 522 N. Prefabricated zirconia posts and resin composite buildups showed a statistically significantly lower fracture strength after chewing simulation than teeth restored with prefabricated zirconia posts and alumina ceramic cores. CONCLUSION: All-ceramic posts and cores made with the 2-piece technique showed promising fracture strengths under the tested conditions. SN - 0033-6572 UR - https://www.unboundmedicine.com/medline/citation/16594360/Fracture_strength_of_teeth_restored_with_all_ceramic_posts_and_cores_ L2 - https://www.quintessence-publishing.com/deu/en/article/839662 DB - PRIME DP - Unbound Medicine ER -