Color Matching of Universal Shade Resin-Based Composite with Natural Teeth and Its Stability before and after...

Area of Science:

• Dental Materials Science
• Esthetic Dentistry
• Restorative Dentistry

Background:

• Esthetics are crucial for the longevity and patient satisfaction of composite resin restorations.
• Maintaining accurate color matching between restorations and natural teeth is a significant clinical challenge.

Purpose of the Study:

• To evaluate the esthetic properties of a universal shade composite resin.
• To assess the color stability and matching of OMNICHROMA composite restorations before and after dental bleaching procedures.

Main Methods:

• Forty extracted premolars underwent Class V cavity preparation and restoration with OMNICHROMA composite.
• Color analysis was performed using a digital spectrophotometer at baseline, post-restoration, post-bleaching, and 2 weeks post-bleaching.
• Statistical analysis was conducted to determine significant color changes (P < 0.05).

Main Results:

• The OMNICHROMA restoration exhibited a ΔE value of 6.474 before and after placement.
• Color changes after bleaching were 3.529, and 3.651 two weeks post-bleaching.
• Restorations appeared lighter after bleaching (positive ΔL values), but this effect diminished within two weeks.

Conclusions:

• OMNICHROMA universal shade composite resin demonstrated color matching variations with adjacent enamel in Class V restorations.
• While in-office bleaching lightened the composite, the esthetic improvement was temporary and not maintained after two weeks.