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[Laboratory evaluation of tooth whitening agents in hydroxyapatite samples]
Stomatologiia
|September 3, 2013
Summary
This study introduces a lab model to test tooth whitening agents on hydroxyapatite (HAP). The model effectively simulates tea staining and measures toothpaste whitening effects using color changes.
Area of Science:
- Materials Science
- Dental Materials Science
- Biomaterials
Background:
- Hydroxyapatite (HAP) is a primary component of tooth enamel.
- Dental discoloration is a common aesthetic concern.
- Evaluating the efficacy of tooth whitening agents requires reliable methodologies.
Purpose of the Study:
- To develop and validate a laboratory model for assessing tooth whitening agent effectiveness.
- To evaluate the whitening efficacy of a specific toothpaste on hydroxyapatite samples.
- To quantify color changes using the CIE L*a*b* system.
Main Methods:
- Preparation of pure and technical hydroxyapatite (HAP) samples.
- Discoloration of HAP samples using tea extract.
- Application of a commercial whitening toothpaste ('Blend-a-med delicate bleaching').
- Color measurement using the CIE L*a*b* color space before and after treatment.
Main Results:
- The laboratory model successfully simulated discoloration caused by food dye (tea).
- Significant changes in color characteristics were observed after toothpaste application, indicating a whitening effect.
- The model demonstrated sensitivity in detecting color alterations on HAP samples.
Conclusions:
- The proposed laboratory model is effective for evaluating tooth whitening agents.
- The model provides a quantifiable method to assess the impact of whitening products on hydroxyapatite.
- This approach can aid in the development and standardization of dental whitening efficacy testing.
