PURPOSE. Polymer infiltrated ceramic network (PICN) materials, also called hybrid ceramics, are new materials in dental market. The manufacturer of the PICN material VITA Enamic suggests 3 different finishing procedures for this new material. In the present study, surface roughness and color differe...
PURPOSE. Polymer infiltrated ceramic network (PICN) materials, also called hybrid ceramics, are new materials in dental market. The manufacturer of the PICN material VITA Enamic suggests 3 different finishing procedures for this new material. In the present study, surface roughness and color differences caused from different finishing procedures of VITA Enamic were investigated. MATERIALS AND METHODS. 120 specimens were prepared in dimensions $2{\times}10{\times}12mm$ from VITA Enamic hybrid ceramic blocks with 'high translucency' and 'translucency 2M2' shades. The specimens were divided into 8 groups. For each group, different finishing procedures suggested by the manufacturer were performed. Surface roughness values were determined by a tactile portable profilometer. Color changes were evaluated using a clinical spectrophotometer. The data were analyzed using one-way ANOVA and Tukey's post-hoc comparison. The significance level was set at ${\alpha}=0.05$. RESULTS. The roughest surfaces were observed in Glaze Groups. Their surface roughness values were similar to that of the control group. Clinical Kit and Technical Kit groups did not show a statistically significant difference regarding surface roughness (P>.05). The largest color difference regarding ${\Delta}E_{00}$ was observed in Clinical Kit finishing groups. There were also statistically significant color changes between the groups (P<.05). However, all the groups showed clinically acceptable color change (${\Delta}E_{00}$<2.25) except Clinical Kit Groups (${\Delta}E_{00}$>2.25). CONCLUSION. Within the limitations of the present study, it may be suggested that finishing the VITA Enamic restorations by Technical Kit instead of Glaze and Clinical Kit gives better clinical performance in regard to surface roughness and shade matching.
PURPOSE. Polymer infiltrated ceramic network (PICN) materials, also called hybrid ceramics, are new materials in dental market. The manufacturer of the PICN material VITA Enamic suggests 3 different finishing procedures for this new material. In the present study, surface roughness and color differences caused from different finishing procedures of VITA Enamic were investigated. MATERIALS AND METHODS. 120 specimens were prepared in dimensions $2{\times}10{\times}12mm$ from VITA Enamic hybrid ceramic blocks with 'high translucency' and 'translucency 2M2' shades. The specimens were divided into 8 groups. For each group, different finishing procedures suggested by the manufacturer were performed. Surface roughness values were determined by a tactile portable profilometer. Color changes were evaluated using a clinical spectrophotometer. The data were analyzed using one-way ANOVA and Tukey's post-hoc comparison. The significance level was set at ${\alpha}=0.05$. RESULTS. The roughest surfaces were observed in Glaze Groups. Their surface roughness values were similar to that of the control group. Clinical Kit and Technical Kit groups did not show a statistically significant difference regarding surface roughness (P>.05). The largest color difference regarding ${\Delta}E_{00}$ was observed in Clinical Kit finishing groups. There were also statistically significant color changes between the groups (P<.05). However, all the groups showed clinically acceptable color change (${\Delta}E_{00}$<2.25) except Clinical Kit Groups (${\Delta}E_{00}$>2.25). CONCLUSION. Within the limitations of the present study, it may be suggested that finishing the VITA Enamic restorations by Technical Kit instead of Glaze and Clinical Kit gives better clinical performance in regard to surface roughness and shade matching.
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문제 정의
1-4 Shade matching and surface roughness are two important features of the restorative materials that determine the clinical success of the dental restorations including VITA Enamic. Thus, the aim of the present study was to investigate the change in surface roughness and color difference caused by different surface treatments of a new PICN material VITA Enamic.
가설 설정
25 ΔE00 units. The hypothesis of the present study was that different finishing and polishing procedures might affect the optical and physical properties of the CAD/CAM materials. Thus, in the present study, the effects of different finishing procedures on color and surface roughness of the Vita Enamic were investigated.
제안 방법
A dental spectrophotometer (VITA Easyshade® Advance, Vita Zahnfabrik, Germany) was used in Tooth Single mode to record the CIELAB coordinates (L* , a* and b* ) of the ceramic samples.
The Control HT and Control T groups did not go through any of the finishing and polishing procedures. The specimens of Groups 1 and 4 underwent the Technical Kit finishing procedure. Polishing instruments were applied with constant stroking motions in a single direction under dry conditions.
대상 데이터
A total of 120 rectangular specimens (2 × 12 × 10 mm) were prepared.
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