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Effect of novel restorative materials and retention slots on fracture resistance of endodontically-treated teeth.
Acta Odontol Scand. 2016; 74(2):96-102.AO

Abstract

OBJECTIVES

The aim of this study was to evaluate the fracture resistance of endodontically-treated teeth restored with nano-hybrid composite resin, bulk-fill flowable and short fibre-reinforced-composite in the absence/presence of retention slots.

MATERIALS AND METHODS

One hundred and ten extracted non-carious human mandibular molars received endodontic treatment followed by mesio-occlusodistal (MOD) cavities with 3 ± 0.2 mm thicknesses of buccal and lingual walls. Teeth were divided into two main groups according to the retention slot preparation. The dove-tail retention slots were prepared on the middle of opposite buccal and lingual walls to create mechanical interlocking. Each group was further divided into four sub-groups according to restorative material types: control (no restoration), nano-hybrid composite resin (Filtek™ Z550), bulk-fill flowable (Filtek™ Bulk Fill) and short fibre-reinforced-composite (everX Posterior™). Restored teeth were subjected to compressive load at a strain rate of 1 mm/min. The data were statistically analysed using two-way ANOVA and Tukey's test for multiple comparisons.

RESULTS

The fracture resistance was significantly affected by the presence of the retentive slots and restorative material (p < 0.05). Restored teeth with retentive slots significantly increased the fracture resistance compared with restored teeth without retentive slots (p < 0.05). Short fibre-reinforced-composite with retentive slot cavities had significantly higher fracture resistance values compared with the other test groups (p < 0.05).

CONCLUSIONS

The preparation of retention slots may increase the fracture resistance of endodontically-treated teeth, especially, when restored with short fibre-reinforced composite. The use of short fibre-reinforced composite with retentive slots could be an alternative technique to prevent cuspal fracture on endodontically-treated teeth with MOD cavity.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Yasa B
a 1 Department of Restorative Dentistry, Faculty of Dentistry, Izmir Katip Celebi University , Izmir, Turkey.
Arslan H
b 2 Department of Endodontics, Faculty of Dentistry, Ataturk University , Erzurum, Turkey.
Yasa E
c 3 Department of Restorative Dentistry, Faculty of Dentistry, Sifa University , Izmir, Turkey.
Akcay M
d 4 Department of Pedodontics, Faculty of Dentistry, Izmir Katip Celebi University , Izmir, Turkey.
Hatirli H
a 1 Department of Restorative Dentistry, Faculty of Dentistry, Izmir Katip Celebi University , Izmir, Turkey.

MeSH

Acid Etching, DentalBisphenol A-Glycidyl MethacrylateComposite ResinsDental Cavity PreparationDental MaterialsDental Restoration, PermanentGlassHumansMaterials TestingMethacrylatesMolarNanocompositesPhosphoric AcidsPolyethylene GlycolsPolymethacrylic AcidsPolymethyl MethacrylatePolyurethanesResin CementsStress, MechanicalTooth FracturesTooth, Nonvital

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

25982519

Citation

Yasa, Bilal, et al. "Effect of Novel Restorative Materials and Retention Slots On Fracture Resistance of Endodontically-treated Teeth." Acta Odontologica Scandinavica, vol. 74, no. 2, 2016, pp. 96-102.
Yasa B, Arslan H, Yasa E, et al. Effect of novel restorative materials and retention slots on fracture resistance of endodontically-treated teeth. Acta Odontol Scand. 2016;74(2):96-102.
Yasa, B., Arslan, H., Yasa, E., Akcay, M., & Hatirli, H. (2016). Effect of novel restorative materials and retention slots on fracture resistance of endodontically-treated teeth. Acta Odontologica Scandinavica, 74(2), 96-102. https://doi.org/10.3109/00016357.2015.1046914
Yasa B, et al. Effect of Novel Restorative Materials and Retention Slots On Fracture Resistance of Endodontically-treated Teeth. Acta Odontol Scand. 2016;74(2):96-102. PubMed PMID: 25982519.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of novel restorative materials and retention slots on fracture resistance of endodontically-treated teeth. AU - Yasa,Bilal, AU - Arslan,Hakan, AU - Yasa,Elif, AU - Akcay,Merve, AU - Hatirli,Huseyin, Y1 - 2015/05/18/ PY - 2015/5/19/entrez PY - 2015/5/20/pubmed PY - 2016/8/6/medline KW - Fracture resistance KW - MOD cavity KW - bulk-fill flowable KW - retentive slot KW - short fibre-reinforced composite SP - 96 EP - 102 JF - Acta odontologica Scandinavica JO - Acta Odontol Scand VL - 74 IS - 2 N2 - OBJECTIVES: The aim of this study was to evaluate the fracture resistance of endodontically-treated teeth restored with nano-hybrid composite resin, bulk-fill flowable and short fibre-reinforced-composite in the absence/presence of retention slots. MATERIALS AND METHODS: One hundred and ten extracted non-carious human mandibular molars received endodontic treatment followed by mesio-occlusodistal (MOD) cavities with 3 ± 0.2 mm thicknesses of buccal and lingual walls. Teeth were divided into two main groups according to the retention slot preparation. The dove-tail retention slots were prepared on the middle of opposite buccal and lingual walls to create mechanical interlocking. Each group was further divided into four sub-groups according to restorative material types: control (no restoration), nano-hybrid composite resin (Filtek™ Z550), bulk-fill flowable (Filtek™ Bulk Fill) and short fibre-reinforced-composite (everX Posterior™). Restored teeth were subjected to compressive load at a strain rate of 1 mm/min. The data were statistically analysed using two-way ANOVA and Tukey's test for multiple comparisons. RESULTS: The fracture resistance was significantly affected by the presence of the retentive slots and restorative material (p < 0.05). Restored teeth with retentive slots significantly increased the fracture resistance compared with restored teeth without retentive slots (p < 0.05). Short fibre-reinforced-composite with retentive slot cavities had significantly higher fracture resistance values compared with the other test groups (p < 0.05). CONCLUSIONS: The preparation of retention slots may increase the fracture resistance of endodontically-treated teeth, especially, when restored with short fibre-reinforced composite. The use of short fibre-reinforced composite with retentive slots could be an alternative technique to prevent cuspal fracture on endodontically-treated teeth with MOD cavity. SN - 1502-3850 UR - https://www.unboundmedicine.com/medline/citation/25982519/Effect_of_novel_restorative_materials_and_retention_slots_on_fracture_resistance_of_endodontically_treated_teeth_ DB - PRIME DP - Unbound Medicine ER -