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Strengthening immature teeth during and after apexification
N Katebzadeh1, B C Dalton, M Trope
1Department of Endodontics, School of Dentistry, University of North Carolina at Chapel Hill 27599-7450, USA.
Journal of Endodontics
|June 26, 1998
Summary
Internal resin bonding techniques significantly enhance tooth fracture resistance after endodontic treatment. These methods offer comparable strengthening effects to traditional positive controls.
Area of Science:
- Endodontics
- Dental Materials Science
- Biomaterials Engineering
Background:
- Endodontically treated teeth often require restoration to regain structural integrity.
- Immature teeth with thin dentinal walls present unique restorative challenges.
- Internal resin bonding techniques offer a potential method to reinforce weakened root structures.
Purpose of the Study:
- To evaluate the fracture strengthening effect of an internal resin bonding technique in endodontically treated central incisors.
- To compare the efficacy of different internal post systems and restorative materials.
- To assess the mechanical performance of restored immature teeth against cervical fracture.
Main Methods:
- One hundred endodontically treated central incisors were divided into five groups.
- Groups were subjected to simulated immature tooth preparation and varying internal post placements.
- Teeth underwent compression testing to determine cervical fracture resistance, analyzed using Kruskal-Wallis test.
Main Results:
- All tested internal resin bonding techniques significantly strengthened teeth against fracture compared to the negative control.
- No significant difference in fracture resistance was observed between the positive control and experimental groups (3-5).
- The use of clear, opaque, or metal posts with internal resin bonding demonstrated comparable strengthening effects.
Conclusions:
- Internal resin bonding techniques effectively strengthen endodontically treated teeth, particularly those with simulated immature root characteristics.
- These modern restorative approaches provide mechanical reinforcement comparable to established positive control methods.
- The choice of post material (clear, opaque, or metal) did not significantly alter the fracture strengthening outcome when used with internal resin bonding.