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Effect of ferrule location on the fracture resistance of crowned mandibular premolars: An in vitro study.
J Prosthet Dent. 2015 Jul; 114(1):86-91.JP

Abstract

STATEMENT OF PROBLEM

How the location of a ferrule affects the fracture resistance of endodontically treated mandibular premolars is unclear.

PURPOSE

The purpose of this in vitro study was to compare the effect of ferrule location on the fracture resistance of endodontically treated mandibular premolars.

MATERIAL AND METHODS

Seventy-two extracted human mandibular premolars were selected and divided into 6 test groups (n = 12) according to ferrule location: control group, GHT; endodontically treated teeth without endodontic posts and crowns, GCF; teeth with a 2 mm circumferential ferrule, GBF; teeth with a 2 mm buccal ferrule; GLF, teeth with a 2 mm lingual ferrule; GBLF, teeth with a 2 mm buccal and lingual ferrule; and teeth without ferrule, GWF. After glass fiber posts were cemented with a self-adhesive resin cement and foundation restorations were placed, NiCr crowns were luted to each prepared tooth. All specimens were quasistatically loaded at 30 degrees in a universal testing machine until fractured. Data were then analyzed with 1-way ANOVA, followed by multiple comparisons using the Tukey honestly significant difference test (α=.05).

RESULTS

Mean ± SD failure loads for groups ranged from 791.1 ± 177.5 N to 1086.1 ± 181.1 N. One-way ANOVA revealed a statistically significant difference between the groups (P ≤ .05). However, no statistically significant differences were observed among groups (P > .05), except between GHT (control group) and groups GBLF and GWF (P = .025, P = .022).

CONCLUSIONS

Within the limitations of this study, the location of the ferrule had no significant effect on the fracture resistance of endodontically treated mandibular premolars.

Authors+Show Affiliations

Visiting Assistant Professor, Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Christian-Albrechts University at Kiel, Germany; and Department of Fixed Prosthodontics, Faculty of Dentistry, University of Aleppo, Aleppo, Syria. Department of Fixed Prosthodontics, School of Dentistry, Ibb University, Yemen. Electronic address: asamran@proth.uni-kiel.de.Lecturer, Department of Fixed Prosthodontics, Faculty of Dentistry, University of Aleppo, Syria; and Department of Restorative Dental Sciences, Al-Farabi Dental College, Riyadh, Saudi Arabia.Assistant Professor, Department of Fixed Prosthodontics, School of Dentistry, Aleppo University, Syria.Professor and Chairman, Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Christian-Albrechts University at Kiel, Germany.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

25794907

Citation

Samran, Abdulaziz, et al. "Effect of Ferrule Location On the Fracture Resistance of Crowned Mandibular Premolars: an in Vitro Study." The Journal of Prosthetic Dentistry, vol. 114, no. 1, 2015, pp. 86-91.
Samran A, Al-Afandi M, Kadour JA, et al. Effect of ferrule location on the fracture resistance of crowned mandibular premolars: An in vitro study. J Prosthet Dent. 2015;114(1):86-91.
Samran, A., Al-Afandi, M., Kadour, J. A., & Kern, M. (2015). Effect of ferrule location on the fracture resistance of crowned mandibular premolars: An in vitro study. The Journal of Prosthetic Dentistry, 114(1), 86-91. https://doi.org/10.1016/j.prosdent.2014.12.014
Samran A, et al. Effect of Ferrule Location On the Fracture Resistance of Crowned Mandibular Premolars: an in Vitro Study. J Prosthet Dent. 2015;114(1):86-91. PubMed PMID: 25794907.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of ferrule location on the fracture resistance of crowned mandibular premolars: An in vitro study. AU - Samran,Abdulaziz, AU - Al-Afandi,Mahmoud, AU - Kadour,Jad-Alkareem, AU - Kern,Matthias, Y1 - 2015/03/18/ PY - 2014/06/28/received PY - 2014/12/30/revised PY - 2014/12/30/accepted PY - 2015/3/22/entrez PY - 2015/3/22/pubmed PY - 2016/12/15/medline SP - 86 EP - 91 JF - The Journal of prosthetic dentistry JO - J Prosthet Dent VL - 114 IS - 1 N2 - STATEMENT OF PROBLEM: How the location of a ferrule affects the fracture resistance of endodontically treated mandibular premolars is unclear. PURPOSE: The purpose of this in vitro study was to compare the effect of ferrule location on the fracture resistance of endodontically treated mandibular premolars. MATERIAL AND METHODS: Seventy-two extracted human mandibular premolars were selected and divided into 6 test groups (n = 12) according to ferrule location: control group, GHT; endodontically treated teeth without endodontic posts and crowns, GCF; teeth with a 2 mm circumferential ferrule, GBF; teeth with a 2 mm buccal ferrule; GLF, teeth with a 2 mm lingual ferrule; GBLF, teeth with a 2 mm buccal and lingual ferrule; and teeth without ferrule, GWF. After glass fiber posts were cemented with a self-adhesive resin cement and foundation restorations were placed, NiCr crowns were luted to each prepared tooth. All specimens were quasistatically loaded at 30 degrees in a universal testing machine until fractured. Data were then analyzed with 1-way ANOVA, followed by multiple comparisons using the Tukey honestly significant difference test (α=.05). RESULTS: Mean ± SD failure loads for groups ranged from 791.1 ± 177.5 N to 1086.1 ± 181.1 N. One-way ANOVA revealed a statistically significant difference between the groups (P ≤ .05). However, no statistically significant differences were observed among groups (P > .05), except between GHT (control group) and groups GBLF and GWF (P = .025, P = .022). CONCLUSIONS: Within the limitations of this study, the location of the ferrule had no significant effect on the fracture resistance of endodontically treated mandibular premolars. SN - 1097-6841 UR - https://www.unboundmedicine.com/medline/citation/25794907/Effect_of_ferrule_location_on_the_fracture_resistance_of_crowned_mandibular_premolars:_An_in_vitro_study_ DB - PRIME DP - Unbound Medicine ER -