Fidan Alakuş Sabuncuoğlu, Ergül Ertürk

6917

THE EFFECT OF DIFFERENT SURFACE TREATMENT TECHNIQUES ON THE SURFACE ROUGHNESS OF FELDSPATHIC PORCELAIN

Purpose: This in vitro study compared the effect of five different techniques on the surface roughness of feldspathic porcelain.Materials and Methods: 100 feldspathic porcelain disk samples mounted in acrylic resin blocks were divided into five groups (n=20) according to type of surface treatment: I, hydrofluoric acid (HFA); II, Deglazed surface porcelain treated with Neodymium:yttrium- aluminum-garnet (Nd:YAG) laser; III, Deglazed porcelain surface treated with Erbium:yttrium-aluminum-garnet (Er:YAG) laser; IV, Glazed porcelain surface treated with Neodymium:yttrium-aluminum-garnet (Nd:YAG) laser, V; Glazed porcelain surface treated with Erbium:yttrium-aluminum-garnet (Er:YAG) laser. The surface roughness of porcelain was measured with a noncontact optical profilometer. For each porcelain sample, two readings were taken across the sample, before porcelain surface treatment (T1) and after porcelain surface treatment (T2). The roughness parameter analyzed was the average roughness (Ra). Statistical analysis was performed using Kolmogorov–Smirnov and Wilcoxon signed rank test.Results: Mean Ra values for each group were as follows: I, 12.64+073; II, 11.91+0.74; III, 11.76+0.59; IV, 3.82 +0.65; V, 2.77 + 0.57. For all porcelain groups, the lowest Ra values were observed in Group V. The highest Ra values were observed for Group I, with a significant difference with the other groups. Kolmogorov–Smirnov showed significant differences among groups (P < 0.001).Conclusion: Surface treatment of porcelain with HFA resulted in significantly higher Ra than laser groups. Both Er:YAG laser or Nd:YAG laser on the deglaze porcelain surface can be recommended as viable treatment alternatives to acid etching.
Keywords:

Porcelain roughness optical profilometry; hydrofluoric acid; Er-YAG laser, Nd:YAG laser; surface treatment,

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European Oral Research-Cover
  • ISSN: 2630-6158
  • Yayın Aralığı: Yılda 3 Sayı
  • Başlangıç: 1967
  • Yayıncı: İstanbul Üniversitesi
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