Evaluation of fracture resistance in simulated immature teeth using Resilon and Ribbond as root reinforcements--an in vitro study.

Abstract

BACKGROUND/AIM:

To compare the reinforcement and strengthening ability of resilon, gutta-percha, and ribbond in endodontically treated roots of immature teeth.

MATERIAL AND METHODS:

Sixty five freshly extracted human maxillary anterior teeth were prepared with a Peeso no. 6 to simulate immature teeth (Cvek's stage 3 root development). After instrumentation, each root was irrigated with sodium hypochlorite and with ethylene diamino tetra acetic acid to remove the smear layer. To simulate single visit apexification technique a 4-5 mm white Pro Root mineral trioxide aggregate plug was placed apically using schilder carrier. The teeth were divided into three experimental groups and one control group. Group I--control group (root canals instrumented but not filled); Group II--backfilled with thermoplastisized gutta-percha using AH plus sealer; Group III--reinforced with Resilon using epiphany sealer; Group IV--reinforced with Ribbond fibers using Panavia F luting cement. A Universal Testing Machine was used to apply a load, at the level of the lingual cementoenamel junction with a chisel-shaped tip The peak load to fracture was recorded and statistical analysis was completed using student's t-test.

RESULTS:

Values of peak load to fracture were 1320.8, 1604.88, 1620, and 1851 newtons for Group I to Group IV respectively. The results of student's t-test, revealed no significant difference (P > 0.05,) between Group II and Group III. Comparison between Group IV and Group III and between Group IV and Group II revealed highly significant difference (P > 0.001).

CONCLUSIONS:

Teeth reinforced with Ribbond fibers using Panavia F luting cement showed the highest resistance to fracture. Resilon could not strengthen the roots and showed no statistically significant difference when compared with thermoplastisized gutta-percha in reinforcing immature tooth when tested with universal testing machine in an experimental model of immature tooth.

• Authors: Hiremath Hemalatha, Metgud Sandeep, Sadanand Kulkarni, Shoeb Sheikh Yakub
• Journal: Dental traumatology : official publication of International Association for Dental Traumatology (Dent Traumatol) Vol. 25 Issue 4 Pg. 433-8 (Aug 2009) ISSN: 1600-9657 [Electronic] Denmark
• PMID: 19519863 (Publication Type: Comparative Study, Journal Article)

Chemical References

• Aluminum Compounds
• Calcium Compounds
• Charisma composite resin
• Composite Resins
• Dental Materials
• Drug Combinations
• Epoxy Resins
• Oxides
• Panavia-Fluoro
• Polyethylenes
• RIBBOND
• Resin Cements
• Root Canal Filling Materials
• Root Canal Irrigants
• Silicates
• epiphany sealer
• epoxy resin-based root canal sealer
• mineral trioxide aggregate
• resilon sealer
• Gutta-Percha
• Edetic Acid
• Sodium Hypochlorite

Topics

• Aluminum Compounds (therapeutic use)
• Calcium Compounds (therapeutic use)
• Composite Resins (chemistry)
• Dental Materials (therapeutic use)
• Dental Restoration, Permanent (methods)
• Dental Stress Analysis (instrumentation)
• Dentin (drug effects)
• Drug Combinations
• Edetic Acid (therapeutic use)
• Epoxy Resins (therapeutic use)
• Gutta-Percha (therapeutic use)
• Humans
• Materials Testing
• Oxides (therapeutic use)
• Polyethylenes (therapeutic use)
• Resin Cements (therapeutic use)
• Root Canal Filling Materials (therapeutic use)
• Root Canal Irrigants (therapeutic use)
• Root Canal Obturation (methods)
• Root Canal Preparation (instrumentation, methods)
• Silicates (therapeutic use)
• Smear Layer
• Sodium Hypochlorite (therapeutic use)
• Stress, Mechanical
• Tooth Cervix (injuries, pathology)
• Tooth Fractures (prevention & control)
• Tooth Root (injuries, pathology)
• Tooth, Nonvital (therapy)