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Bleaching teeth treated endodontically: long-term evaluation of a case series
Massimo Amato1, Maria Serena Scaravilli, Mauro Farella
1Department of Dental, Oral and Maxillo-Facial Sciences, School of Dentistry, University of Naples Federico II, Naples, Italy. maxamato@tiscalinet.it
Journal of Endodontics
|March 24, 2006
Summary
The combined intracoronal bleaching technique for nonvital discolored teeth demonstrated long-term chromatic stability in over 60% of cases after 16 years, with no observed root resorption, confirming its efficacy and safety.
Area of Science:
- Endodontics
- Restorative Dentistry
- Dental Aesthetics
Background:
- Nonvital discolored teeth present an esthetic challenge.
- Intracoronal bleaching is a common treatment option.
- Long-term data on chromatic stability after combined techniques are limited.
Purpose of the Study:
- To evaluate the long-term chromatic stability of nonvital discolored teeth treated with a combined intracoronal bleaching technique.
- To assess the safety of the technique regarding root resorption over 16 years.
Main Methods:
- A longitudinal study evaluated 50 patients (age 7-30) treated between 1987-1989.
- Chromatic stability was assessed after 16 years (2005).
- Radiological examination was performed to detect root resorption.
Main Results:
- 35 cases were evaluated after 16 years.
- 62.9% (22 cases) showed stable color matching adjacent teeth.
- 37.1% (13 cases) experienced significant color relapse.
- No internal or external root resorption was detected radiologically.
Conclusions:
- The combined intracoronal bleaching technique offers effective and safe long-term esthetic results for nonvital discolored teeth.
- The technique demonstrates good chromatic stability and a low risk of root resorption.
- Further research may explore factors influencing color relapse.
