Abstract
BackgroundColor change of dental materials over time because of staining agents has important effects on the long-term prognosis of dental esthetic treatments. In the present study, staining resistance of an interpenetrating network composite material with different translucency levels (translucent and high translucent) and various surface procedures for finishing were investigated.MethodsSame shade CAD/CAM interpenetrating network composite specimens having two different translucency levels were prepared using by a water cooling cutting saw. Specimens were grouped and different finishing procedures were performed. Then, specimens were kept in distilled water, red wine and coffee for different periods. Color was evaluated before and after exposure to staining liquids using a clinical spectrophotometer.ResultsIn the 7 days Glaze group (ΔE00 > 2.2), color difference was only perceivable in the specimens kept in red wine. In the 28 days red wine high translucent groups, only the high translucent Clinical group showed a clinically acceptable (ΔE00 < 2.2) color change. In the translucent groups kept in red wine, only the translucent Glaze group showed a clinically perceivable color change (ΔE00 > 2.2). In the 28 day measurements, all the translucent groups showed a clinically perceivable color change (ΔE00 > 2.2). Of the translucent groups kept in coffee for 28 days, it was observed that only the translucent Clinical group demonstrated a clinically non-perceivable color change (ΔE00 < 2.2).ConclusionsAll the translucent groups kept in red wine showed a clinically perceivable color change after 28 days. Only the high translucent Clinical Kit group showed a clinically acceptable color change. Among high translucent and translucent specimens kept in coffee only the translucent Clinical group showed a clinically acceptable color change after 28 days.
Highlights
Color change of dental materials over time because of staining agents has important effects on the long-term prognosis of dental esthetic treatments
Composites and ceramics are still the most prefered dental materials in restorative dentistry. The disadvantages such as brittleness and antagonistic natural tooth wear of dental ceramics and, easy staining and greater wear of composites have led researchers to overcome the deficiencies of these 2 conventional dental materials
There was no significant difference between high translucent (HT) Control and HT Glaze groups (p > 0.05) but both of these groups showed a statistically significant difference from the HT Technical and HT Clinical groups for 24 h measurements (p < 0.05)
Summary
Color change of dental materials over time because of staining agents has important effects on the long-term prognosis of dental esthetic treatments. In the present study, staining resistance of an interpenetrating network composite material with different translucency levels (translucent and high translucent) and various surface procedures for finishing were investigated. Composites and ceramics are still the most prefered dental materials in restorative dentistry. The disadvantages such as brittleness and antagonistic natural tooth wear of dental ceramics and, easy staining and greater wear of composites have led researchers to overcome the deficiencies of these 2 conventional dental materials. Interpenetrating network composite (IPN) materials are quite new in materials in the dental market to cope with. Wearing of the IPN material is easy and this phenomena causes significant reductions in surface gloss of finished material surfaces. As wear and roughness increase, the gloss decreases and the color changes [8,9,10,11]
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