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Tooth discoloration induced by endodontic materials: a laboratory study
P Lenherr1, N Allgayer, R Weiger
1Clinic for Reconstructive Dentistry and Temporomandibular Disorders, University of Basel, Basel, Switzerland.
International Endodontic Journal
|April 18, 2012
Summary
Endodontic materials can cause tooth discoloration. AH Plus and empty controls showed minimal color change, while triple antibiotic paste and Ledermix caused significant staining. Aesthetic factors should guide material selection.
Area of Science:
- Dental Materials Science
- Endodontics
- Aesthetics
Background:
- Tooth discoloration is a concern in endodontic treatment.
- The aesthetic impact of various endodontic materials requires thorough investigation.
Purpose of the Study:
- To evaluate the potential of different endodontic materials to cause tooth discoloration.
- To compare the color stability of various endodontic materials in a bovine tooth model.
Main Methods:
- Bovine dentine-enamel blocks were prepared and cavities filled with 14 different endodontic materials or blood.
- Color change (ΔE) was measured over 12 months using a spectrophotometer.
- Statistical analysis (two-way ANOVA and Tukey's test) was performed to compare color changes.
Main Results:
- Significant differences in discoloration were observed among the groups after 12 months (P < 0.0001).
- AH Plus, empty controls, Portland cement, calcium hydroxide, Ultracal XS, and white MTA showed the least discoloration.
- Triple antibiotic paste (3Mix) and Ledermix exhibited the most significant tooth staining.
Conclusions:
- Endodontic materials can cause tooth discoloration, impacting aesthetics.
- Material selection should consider both biological function and aesthetic outcomes.
- Blood contamination significantly increased discoloration in Portland cement.