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Fracture resistance of the buccal cusps of root filled maxillary premolar teeth restored with various techniques.
Int Endod J. 2007 Mar; 40(3):161-8.IE

Abstract

AIM

To compare the cusp fracture resistance of teeth restored with composite resins and two post systems.

METHODOLOGY

Eighty extracted single-rooted human maxillary premolars were randomly assigned to eight groups (n = 10). Group 1 (control) did not receive any preparation. From groups 2 to 8, the teeth were root filled and mesio-occluso-distal (MOD) cavities were prepared. Group 2 remained unrestored. Group 3 was restored with packable resin composite using a single-step adhesive. Group 4 was restored with packable resin composite using a single-step adhesive and a thin layer of flowable resin composite. Group 5 was restored with packable resin composite using a total-etch two-step adhesive. Group 6 was restored with ormocer resin composite using a total-etch two-step adhesive. Group 7 was restored with an endodontic glass fibre post and hybrid resin composite using a total-etch two-step adhesive. Group 8 was restored with an endodontic zirconium post and hybrid resin composite using a total-etch two-step adhesive. The teeth were then mounted in a universal testing machine, the buccal cusp loaded (30 degrees) until fracture, and the data analysed statistically.

RESULTS

Group 1 had the greatest fracture resistance, and group 2 the poorest. Groups 5-8 had significantly greater (P < 0.05) fracture resistance than groups 3 and 4. No significant differences were found between groups 3 and 4, or amongst groups 5-8 (P > 0.05).

CONCLUSIONS

For root filled maxillary premolars with MOD cavities, adhesive resin composite restorations, with and without glass and zirconium posts, increased the fracture resistance of the buccal cuSPS. A total-etch two-step adhesive increased significantly fracture resistance more than a one-step adhesive. For the one-step adhesive, an additional layer of flowable resin composite did not enhance fracture resistance.

Authors+Show Affiliations

Siso SH
Restorative Dentistry, School of Dentistry, Cumhurivet University, Sivas, Turkey. seydaher@hotmail.com
Hürmüzlü F
No affiliation info available
Turgut M
No affiliation info available
Altundaşar E
No affiliation info available
Serper A
No affiliation info available
Er K
No affiliation info available

MeSH

BicuspidComposite ResinsDental BondingDental Cavity PreparationDental Restoration, PermanentDental Stress AnalysisHumansMaxillaPost and Core TechniqueTooth CrownTooth FracturesTooth, Nonvital

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

17305692

Citation

Siso, S H., et al. "Fracture Resistance of the Buccal Cusps of Root Filled Maxillary Premolar Teeth Restored With Various Techniques." International Endodontic Journal, vol. 40, no. 3, 2007, pp. 161-8.
Siso SH, Hürmüzlü F, Turgut M, et al. Fracture resistance of the buccal cusps of root filled maxillary premolar teeth restored with various techniques. Int Endod J. 2007;40(3):161-8.
Siso, S. H., Hürmüzlü, F., Turgut, M., Altundaşar, E., Serper, A., & Er, K. (2007). Fracture resistance of the buccal cusps of root filled maxillary premolar teeth restored with various techniques. International Endodontic Journal, 40(3), 161-8.
Siso SH, et al. Fracture Resistance of the Buccal Cusps of Root Filled Maxillary Premolar Teeth Restored With Various Techniques. Int Endod J. 2007;40(3):161-8. PubMed PMID: 17305692.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fracture resistance of the buccal cusps of root filled maxillary premolar teeth restored with various techniques. AU - Siso,S H, AU - Hürmüzlü,F, AU - Turgut,M, AU - Altundaşar,E, AU - Serper,A, AU - Er,K, PY - 2007/2/20/pubmed PY - 2007/4/3/medline PY - 2007/2/20/entrez SP - 161 EP - 8 JF - International endodontic journal JO - Int Endod J VL - 40 IS - 3 N2 - AIM: To compare the cusp fracture resistance of teeth restored with composite resins and two post systems. METHODOLOGY: Eighty extracted single-rooted human maxillary premolars were randomly assigned to eight groups (n = 10). Group 1 (control) did not receive any preparation. From groups 2 to 8, the teeth were root filled and mesio-occluso-distal (MOD) cavities were prepared. Group 2 remained unrestored. Group 3 was restored with packable resin composite using a single-step adhesive. Group 4 was restored with packable resin composite using a single-step adhesive and a thin layer of flowable resin composite. Group 5 was restored with packable resin composite using a total-etch two-step adhesive. Group 6 was restored with ormocer resin composite using a total-etch two-step adhesive. Group 7 was restored with an endodontic glass fibre post and hybrid resin composite using a total-etch two-step adhesive. Group 8 was restored with an endodontic zirconium post and hybrid resin composite using a total-etch two-step adhesive. The teeth were then mounted in a universal testing machine, the buccal cusp loaded (30 degrees) until fracture, and the data analysed statistically. RESULTS: Group 1 had the greatest fracture resistance, and group 2 the poorest. Groups 5-8 had significantly greater (P < 0.05) fracture resistance than groups 3 and 4. No significant differences were found between groups 3 and 4, or amongst groups 5-8 (P > 0.05). CONCLUSIONS: For root filled maxillary premolars with MOD cavities, adhesive resin composite restorations, with and without glass and zirconium posts, increased the fracture resistance of the buccal cuSPS. A total-etch two-step adhesive increased significantly fracture resistance more than a one-step adhesive. For the one-step adhesive, an additional layer of flowable resin composite did not enhance fracture resistance. SN - 0143-2885 UR - https://www.unboundmedicine.com/medline/citation/17305692/Fracture_resistance_of_the_buccal_cusps_of_root_filled_maxillary_premolar_teeth_restored_with_various_techniques_ DB - PRIME DP - Unbound Medicine ER -