Scholarlink

Purpose <p>This study investigated the influence of the fiber sleeve on push-out bond strength (PBS), both with and without aging in a mastication simulator.</p> Materials and methods <p>Sixty straight-rooted mandibular premolars were randomly divided into four groups (<i>n</i> = 15). Groups S and S<sub>MS</sub> included fiber sleeves and posts, while Groups P and P<sub>MS</sub> included posts only. Groups S<sub>MS</sub> and P<sub>MS</sub> underwent aging in a mastication simulator (50&#xa0;N load, 240,000 cycles). Specimens were sectioned into 1&#xa0;mm slices (coronal, middle, apical thirds), and PBS testing was performed using a universal testing machine. Failure modes were analyzed under 40× magnification. Statistical analysis used one-way ANOVA and Tukey tests (<i>α</i> = 0.05).</p> Results <p>Group S had the highest PBS, significantly surpassing Group P (<i>P</i> &lt; 0.001). Aging significantly reduced PBS in sleeve groups (S vs. S<sub>MS,</sub> <i>P</i> = 0.029) Adhesive failure between dentin and cement was most common.</p> Conclusion <p>The use of fiber sleeves significantly improved PBS; however, this enhancement diminished following aging procedures.</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

Fiber sleeve impact on push-out bond strength of adjustable post system

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年10月21日

查看全文
  • Eren Var,
  • Cihan Küden,
  • Oguz Yoldas

摘要

Purpose

This study investigated the influence of the fiber sleeve on push-out bond strength (PBS), both with and without aging in a mastication simulator.

Materials and methods

Sixty straight-rooted mandibular premolars were randomly divided into four groups (n = 15). Groups S and SMS included fiber sleeves and posts, while Groups P and PMS included posts only. Groups SMS and PMS underwent aging in a mastication simulator (50 N load, 240,000 cycles). Specimens were sectioned into 1 mm slices (coronal, middle, apical thirds), and PBS testing was performed using a universal testing machine. Failure modes were analyzed under 40× magnification. Statistical analysis used one-way ANOVA and Tukey tests (α = 0.05).

Results

Group S had the highest PBS, significantly surpassing Group P (P < 0.001). Aging significantly reduced PBS in sleeve groups (S vs. SMS, P = 0.029) Adhesive failure between dentin and cement was most common.

Conclusion

The use of fiber sleeves significantly improved PBS; however, this enhancement diminished following aging procedures.