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The influence of fatigue loading on the quality of the cement layer and retention strength of carbon fiber post-resin composite core restorations.
Oper Dent. 2005 Mar-Apr; 30(2):220-7.OD

Abstract

Clinical studies have shown that endodontically treated teeth restored with short posts or deficient ferrules show a high failure risk. This study. evaluated the influence of fatigue loading on the quality of the cement layer between prefabricated quartz coated carbon fiber posts with restricted length and the root canal wall in maxillary pre-molars. Two adhesive resin composite cements, chemical-cured Panavia 21 (Group 1) and dual-cured RelyX-ARC (Group 2), and one resin-modified glass-ionomer cement, chemical-cured RelyX (Group 3), delta were selected for this study. Post- and-core restorations were made on single-rooted human maxillary premolars from which the coronal sections were removed at the level of the proximal cemento-enamel junction (CEJ). Following endodontic treatment, a post-and-core restoration with 6-mm post length was prepared for each tooth. The posts were directly cemented into the root canal and, after applying an adhesive (Clearfil Photo Bond), they were built up with a core build-up composite (Clearfil Photo Core). For each group (n=8), half of the specimens were exposed to fatigue loading (10(6) load cycles) almost perpendicular to the axial axis (85 degrees), while the other half were used as the control. Three parallel, transverse root sections, 1.5-mm thick, were cut from each specimen at the apical, medial and coronal location. These sections were examined by Scanning Electron Microscopy (SEM) to evaluate the integrity of the cement layer, while the retention strength of the cemented post sections was determined with the push-out test. The multivariate results of MANOVA showed that the condition main effect (fatigue or control) was not significant (p=0.059); the two other main effects, type of cement and section location, were significant (p=0.001 and p=0.008). For both the push-out strength and SEM evaluation of the cement layer integrity, the results significantly improved from RelyX to RelyX-ARC to Panavia 21 and also from apical to coronal.

Authors+Show Affiliations

Department of Dental Materials Science, ACTA, Amsterdam, The Netherlands. p.bolhuis@acta.nlNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

15853108

Citation

Bolhuis, Peter, et al. "The Influence of Fatigue Loading On the Quality of the Cement Layer and Retention Strength of Carbon Fiber Post-resin Composite Core Restorations." Operative Dentistry, vol. 30, no. 2, 2005, pp. 220-7.
Bolhuis P, de Gee A, Feilzer A. The influence of fatigue loading on the quality of the cement layer and retention strength of carbon fiber post-resin composite core restorations. Oper Dent. 2005;30(2):220-7.
Bolhuis, P., de Gee, A., & Feilzer, A. (2005). The influence of fatigue loading on the quality of the cement layer and retention strength of carbon fiber post-resin composite core restorations. Operative Dentistry, 30(2), 220-7.
Bolhuis P, de Gee A, Feilzer A. The Influence of Fatigue Loading On the Quality of the Cement Layer and Retention Strength of Carbon Fiber Post-resin Composite Core Restorations. Oper Dent. 2005 Mar-Apr;30(2):220-7. PubMed PMID: 15853108.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The influence of fatigue loading on the quality of the cement layer and retention strength of carbon fiber post-resin composite core restorations. AU - Bolhuis,Peter, AU - de Gee,Anton, AU - Feilzer,Albert, PY - 2005/4/28/pubmed PY - 2005/5/20/medline PY - 2005/4/28/entrez SP - 220 EP - 7 JF - Operative dentistry JO - Oper Dent VL - 30 IS - 2 N2 - Clinical studies have shown that endodontically treated teeth restored with short posts or deficient ferrules show a high failure risk. This study. evaluated the influence of fatigue loading on the quality of the cement layer between prefabricated quartz coated carbon fiber posts with restricted length and the root canal wall in maxillary pre-molars. Two adhesive resin composite cements, chemical-cured Panavia 21 (Group 1) and dual-cured RelyX-ARC (Group 2), and one resin-modified glass-ionomer cement, chemical-cured RelyX (Group 3), delta were selected for this study. Post- and-core restorations were made on single-rooted human maxillary premolars from which the coronal sections were removed at the level of the proximal cemento-enamel junction (CEJ). Following endodontic treatment, a post-and-core restoration with 6-mm post length was prepared for each tooth. The posts were directly cemented into the root canal and, after applying an adhesive (Clearfil Photo Bond), they were built up with a core build-up composite (Clearfil Photo Core). For each group (n=8), half of the specimens were exposed to fatigue loading (10(6) load cycles) almost perpendicular to the axial axis (85 degrees), while the other half were used as the control. Three parallel, transverse root sections, 1.5-mm thick, were cut from each specimen at the apical, medial and coronal location. These sections were examined by Scanning Electron Microscopy (SEM) to evaluate the integrity of the cement layer, while the retention strength of the cemented post sections was determined with the push-out test. The multivariate results of MANOVA showed that the condition main effect (fatigue or control) was not significant (p=0.059); the two other main effects, type of cement and section location, were significant (p=0.001 and p=0.008). For both the push-out strength and SEM evaluation of the cement layer integrity, the results significantly improved from RelyX to RelyX-ARC to Panavia 21 and also from apical to coronal. SN - 0361-7734 UR - https://www.unboundmedicine.com/medline/citation/15853108/The_influence_of_fatigue_loading_on_the_quality_of_the_cement_layer_and_retention_strength_of_carbon_fiber_post_resin_composite_core_restorations_ DB - PRIME DP - Unbound Medicine ER -