Scholarlink

Background <p>This study aimed to evaluate the effects of masking and bleach-shade composite resins, applied using the incremental layering technique, on the final color and translucency of restorations.</p> Methods <p>In this study, 27 composite resin discs belonging to the test group were prepared by placing 1.5&#xa0;mm A2 color composite resin (Neo Spectra ST HV, Dentsply Sirona) on 0.5&#xa0;mm thick composite discs made with one masking (Omnichroma Blocker, Tokuyama-group OB) and two bleach-shade composite resins (ELS flow syringe SW + + , Saremco-group SW; Neo Spectra ST LV BW, Dentsply Sirona-group BW) and 9 composite resin discs belonging to the control group using 2&#xa0;mm A2 color composite resin (Neo Spectra ST HV, Dentsply Sirona, group CT). After the specimens were kept in a 100% humid environment at 37&#xa0;°C for 24&#xa0;h, the color of the specimens was measured on three different backgrounds (white, black, gray) with a spectrophotometer (Vita Easyshade). The data were analyzed by two-way ANOVA followed by Tukey’s post hoc test (<i>p</i> ≤ 0.05).</p> Results <p>The SW group showed the smallest color change on the black and gray backgrounds (<i>p</i> &lt; 0.001). The CT group showed the highest translucency value whereas the SW group showed the lowest translucency value (<i>p</i> &lt; 0.001). The SW group demonstrated more successful outcomes than the others in providing masking in black and gray.</p> Conclusions <p>Incremental application of masking and bleach-shade composites significantly reduced translucency and enhanced masking ability. The SW group showed the most favorable outcomes, particularly against black and gray backgrounds. However, most specimens did not achieve clinically acceptable thresholds. Clinicians should consider both translucency and masking properties when selecting composites for esthetic restorations over discolored substrates.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of masking and bleach-shade composite resins on the color and translucency of composite restorations: an in vitro study

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月28日

查看全文
  • Elif Kandemir Ülker,
  • Alaz Oya Erenel,
  • Ebru Delikan,
  • İrem Bağ,
  • Seçil Çalişkan

摘要

Background

This study aimed to evaluate the effects of masking and bleach-shade composite resins, applied using the incremental layering technique, on the final color and translucency of restorations.

Methods

In this study, 27 composite resin discs belonging to the test group were prepared by placing 1.5 mm A2 color composite resin (Neo Spectra ST HV, Dentsply Sirona) on 0.5 mm thick composite discs made with one masking (Omnichroma Blocker, Tokuyama-group OB) and two bleach-shade composite resins (ELS flow syringe SW + + , Saremco-group SW; Neo Spectra ST LV BW, Dentsply Sirona-group BW) and 9 composite resin discs belonging to the control group using 2 mm A2 color composite resin (Neo Spectra ST HV, Dentsply Sirona, group CT). After the specimens were kept in a 100% humid environment at 37 °C for 24 h, the color of the specimens was measured on three different backgrounds (white, black, gray) with a spectrophotometer (Vita Easyshade). The data were analyzed by two-way ANOVA followed by Tukey’s post hoc test (p ≤ 0.05).

Results

The SW group showed the smallest color change on the black and gray backgrounds (p < 0.001). The CT group showed the highest translucency value whereas the SW group showed the lowest translucency value (p < 0.001). The SW group demonstrated more successful outcomes than the others in providing masking in black and gray.

Conclusions

Incremental application of masking and bleach-shade composites significantly reduced translucency and enhanced masking ability. The SW group showed the most favorable outcomes, particularly against black and gray backgrounds. However, most specimens did not achieve clinically acceptable thresholds. Clinicians should consider both translucency and masking properties when selecting composites for esthetic restorations over discolored substrates.