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The effect of fibre insertion on fracture resistance of root filled molar teeth with MOD preparations restored with composite.
Int Endod J. 2005 Feb; 38(2):73-80.IE

Abstract

AIM

To evaluate the effect of using flowable composite with or without leno woven ultra high modulus polyethylene fibre reinforcement on fracture resistance of root filled mandibular molars with mesio-occlusodistal (MOD) preparations.

METHODOLOGY

Sixty sound extracted human mandibular molars were randomly assigned to five groups (n = 12). Group 1 did not receive any preparation. From groups 2 to 5, the teeth were root filled and MOD preparations were created. Group 2 remained unrestored. Group 3 was restored with a dentine bonding system (DBS; SE Bond, Kuraray, Japan) and composite resin (CR) (AP-X; Kuraray). In group 4, flowable composite resin (Protect Liner F; Kuraray) was used before restoring teeth with CR. In group 5, leno woven ultra high modulus polyethylene ribbon fibre (Ribbond, Seattle, WA, USA) was inserted into the cavities in a buccal to lingual direction and the teeth were then restored with DBS and CR. After finishing and polishing, the specimens were stored in 100% humidity at 37 degrees C for 1 day. Compressive loading of the teeth was performed using a universal testing machine at a crosshead speed of 0.5 mm min(-1). The mean load necessary to fracture the samples were recorded in newtons (N) and were subjected to analysis of variance (ANOVA) and Tukey post-hoc test.

RESULTS

The mean load necessary to fracture the samples in each group were (in N): group 1: 1676.75 +/-154.63(a), group 2: 376.51 +/- 37.36(b), group 3: 733.23 +/- 133.33(c), group 4: 786.48 +/- 145.34(c), group 5: 943.63 +/- 121.15(d). There were statistically significant differences between the groups annotated with different letters.

CONCLUSIONS

(i) Use of flowable composite resin under composite restorations had no effect on fracture resistance of root filled molar teeth with MOD preparations, (ii) use of polyethylene ribbon fibre under composite restorations in root filled teeth with MOD preparations significantly increased fracture strength.

Authors+Show Affiliations

Belli S
Department of Endodontics, Faculty of Dentistry, Selcuk University, Konya, Turkey. sbelli@selcuk.edu.tr
Erdemir A
No affiliation info available
Ozcopur M
No affiliation info available
Eskitascioglu G
No affiliation info available

MeSH

Analysis of VarianceComposite ResinsCompressive StrengthDental Cavity LiningDental Cavity PreparationDental Restoration, PermanentDental Stress AnalysisDentin-Bonding AgentsHumansMaterials TestingMethacrylatesMolarPolyethylenesRandom AllocationResin CementsTooth FracturesTooth, Nonvital

Pub Type(s)

Journal Article

Language

eng

PubMed ID

15667628

Citation

Belli, S, et al. "The Effect of Fibre Insertion On Fracture Resistance of Root Filled Molar Teeth With MOD Preparations Restored With Composite." International Endodontic Journal, vol. 38, no. 2, 2005, pp. 73-80.
Belli S, Erdemir A, Ozcopur M, et al. The effect of fibre insertion on fracture resistance of root filled molar teeth with MOD preparations restored with composite. Int Endod J. 2005;38(2):73-80.
Belli, S., Erdemir, A., Ozcopur, M., & Eskitascioglu, G. (2005). The effect of fibre insertion on fracture resistance of root filled molar teeth with MOD preparations restored with composite. International Endodontic Journal, 38(2), 73-80.
Belli S, et al. The Effect of Fibre Insertion On Fracture Resistance of Root Filled Molar Teeth With MOD Preparations Restored With Composite. Int Endod J. 2005;38(2):73-80. PubMed PMID: 15667628.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effect of fibre insertion on fracture resistance of root filled molar teeth with MOD preparations restored with composite. AU - Belli,S, AU - Erdemir,A, AU - Ozcopur,M, AU - Eskitascioglu,G, PY - 2005/1/26/pubmed PY - 2005/3/9/medline PY - 2005/1/26/entrez SP - 73 EP - 80 JF - International endodontic journal JO - Int Endod J VL - 38 IS - 2 N2 - AIM: To evaluate the effect of using flowable composite with or without leno woven ultra high modulus polyethylene fibre reinforcement on fracture resistance of root filled mandibular molars with mesio-occlusodistal (MOD) preparations. METHODOLOGY: Sixty sound extracted human mandibular molars were randomly assigned to five groups (n = 12). Group 1 did not receive any preparation. From groups 2 to 5, the teeth were root filled and MOD preparations were created. Group 2 remained unrestored. Group 3 was restored with a dentine bonding system (DBS; SE Bond, Kuraray, Japan) and composite resin (CR) (AP-X; Kuraray). In group 4, flowable composite resin (Protect Liner F; Kuraray) was used before restoring teeth with CR. In group 5, leno woven ultra high modulus polyethylene ribbon fibre (Ribbond, Seattle, WA, USA) was inserted into the cavities in a buccal to lingual direction and the teeth were then restored with DBS and CR. After finishing and polishing, the specimens were stored in 100% humidity at 37 degrees C for 1 day. Compressive loading of the teeth was performed using a universal testing machine at a crosshead speed of 0.5 mm min(-1). The mean load necessary to fracture the samples were recorded in newtons (N) and were subjected to analysis of variance (ANOVA) and Tukey post-hoc test. RESULTS: The mean load necessary to fracture the samples in each group were (in N): group 1: 1676.75 +/-154.63(a), group 2: 376.51 +/- 37.36(b), group 3: 733.23 +/- 133.33(c), group 4: 786.48 +/- 145.34(c), group 5: 943.63 +/- 121.15(d). There were statistically significant differences between the groups annotated with different letters. CONCLUSIONS: (i) Use of flowable composite resin under composite restorations had no effect on fracture resistance of root filled molar teeth with MOD preparations, (ii) use of polyethylene ribbon fibre under composite restorations in root filled teeth with MOD preparations significantly increased fracture strength. SN - 0143-2885 UR - https://www.unboundmedicine.com/medline/citation/15667628/The_effect_of_fibre_insertion_on_fracture_resistance_of_root_filled_molar_teeth_with_MOD_preparations_restored_with_composite_ DB - PRIME DP - Unbound Medicine ER -