Dental Material Color Stability Tester | ISO 4049 / YY 0270 / ASTM G155 Compliant

The Dental Material Color Stability Tester, also known as a Dentistry Base Polymer Color Stability Tester, is used to evaluate the color stability of dental base polymers under various environmental conditions. Dental base polymers, including materials used in dentures, braces, and other restorative applications, may undergo color changes over time due to exposure to light, temperature, humidity, and other environmental factors.

This tester simulates these conditions in a controlled laboratory setting and measures the color change of polymer samples over time. By comparing initial and subsequent color measurements, the instrument allows dentists, technicians, and manufacturers to assess material performance, select polymers with superior color stability, and improve the quality and durability of dental restorations.

Applications

Evaluating color stability of dental base polymers used in dentures, braces, and other restorative devices

Supporting dental material research and development

Quality control of dental polymer production

Regulatory compliance testing for dental materials and restorative products

Helping manufacturers improve formulations for better long-term color retention

Standards Compliant

YY 0270.1-2011 / YY/T 0631-2008 – Dentistry base polymer color stability testing

ASTM C1442 – Conducting tests on sealants using artificial weathering apparatus

ASTM C1501 – Color stability of building construction sealants under laboratory accelerated weathering

ASTM D3424 – Evaluating lightfastness and weatherability of printed matter

ASTM D5071 / D6695 – Xenon arc exposures of photodegradable plastics and coatings

ASTM G151 / G155 – Operating Xenon arc light apparatus for non-metallic materials

COLIPA in-vitro UVA (2011) – In vitro UVA protection determination

EPA/ASTM E896 – Aqueous direct photolysis tests

GB/T 8427 / GB/T 16422 – Color fastness and exposure of plastics to laboratory light sources

ICH Q1B / Q5C – Photostability and stability testing of new drugs and biotechnological products

ISO 4049 / ISO 7491 – Dentistry polymer-based restorative materials and color stability

ISO 4892-1 / ISO 4892-2 – Plastics: General guidance and Xenon-arc exposure methods

Compliance with these standards ensures accurate, reproducible, and internationally recognized results.

Technical Parameters

Parameter	Specification
Control System	PLC
Operation Interface	Color touch screen, Chinese/English switch
Light Source	Illuminance: 150,000 lx ±10%
Color Temperature Range	5000K–10000K
Filter	Transmittance > 90%
Test Box Temperature	37°C (Water temperature adjustable: 0–99°C)
Clip	304 stainless steel, Ø50 mm, thickness 0.5 mm
Polyurethane Film	Thickness: 50 µm – 0.5 mm
Dial Indicator	Range: 0–25.5 mm, resolution 0.01 mm
Constant Temperature Tank	15 L, 0–99°C

FAQ

1. What is a Dental Material Color Stability Tester?

It is a device that evaluates how dental polymers and restorative materials retain their color under simulated environmental conditions such as light, temperature, and humidity.

2. Why is color stability testing important?

Dental restorations must maintain aesthetic appearance over time. Color stability testing ensures materials will not discolor, maintaining patient satisfaction and clinical performance.

3. What materials can be tested?

Dental base polymers used in dentures, braces, crowns, and other polymer-based restorative dental devices.

4. How does the tester work?

The sample is exposed to controlled light, temperature, and humidity conditions. Initial color values are measured and compared to values after exposure to assess color change.

5. Which standards does it comply with?

YY 0270.1-2011, YY/T 0631-2008, ISO 4049, ISO 7491, ASTM G155, ASTM D5071, and related international standards.

2025-12-08 17:55