Evaluation of Titanium-nitride Coated Crown: Surface Hardness, Corrosion Resistance and Color Sustainability
김효진, 임수민, 김진영,
소속 상세정보
김효진 ( Kim Hyo-Jin ) - Sun Dental Hospital Department of Pediatric Dentistry
임수민 ( Lim Su-Min ) - Sun Dental Hospital Department of Pediatric Dentistry
김진영 ( Kim Jin-Young ) - Sun Dental Hospital Department of Pediatric Dentistry
Abstract
The purpose of this study was to compare surface hardness between titanium-nitride coated crowns (TiNCs) and stainless steel crowns (SSCs), and to evaluate the corrosion resistance and color sustainability of TiNCs. Ten TiNCs and 10 SSCs were used for the hardness test. Measurement was performed 30 times for each type of crowns, and the mean values were compared. Metallic raw material plates (before being processed into crowns) of TiNCs and SSCs were prepared for the corrosion resistance test. The total amounts of metal ion releases in the test solution were detected by inductively coupled plasma-optical emission spectrometry. Five TiNCs were subjected to the color sustainability test by applying repetitive brushing forces. The mean hardness values of TiNC group and SSC group were 395.53 ± 105.90 Hv and 278.70 ± 31.45 Hv respectively. Hardness of TiNCs were significantly higher than that of SSCs. The total amounts of metal ion releases from the materials of TiNCs and SSCs satisfied the criterion in International Organization for Standardization 22674. The results mean that TiNCs and SSCs were not harmful in an acidic environment. The golden coating was stable against the repetitive physical stimulations for a given period time.
키워드
Titanium-nitride coated crown; Stainless steel crown; Surface hardness; Corrosion resistance; Color sustainability
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