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<p>This study aimed to ascertain whether the Merocel strips (MS) can achieve adequate hemostasis and effectively retract the gingiva compared to the aluminum chloride-impregnated knitted retraction cord (ACIKRC) utilizing a digital gypsum model. It was a randomized, double-blinded, split-mouth, active-controlled clinical trial. The sample consisted of 122 abutments that were randomly divided into two groups. Group A: Gingival retraction was evaluated in 44 abutments. A single gypsum model was created by matching models before (t<sub>0</sub>) and after (t<sub>1</sub>) gingival retraction utilizing exocad software to record gingival horizontal displacement angles. Group B: Hemostatic efficacy was assessed in 78 abutments at t<sub>0</sub> and t<sub>1</sub>. Each group was further divided into two equal sub-groups. Sub-group I: ACIKRC Size 000. Sub-group II: MS. The mean value of gingival horizontal displacement angles in the MS (25.09 ± 15.53) group was higher than the ACIKRC (19.93 ± 10.95) group (<i>p</i> = 0.158). The mean value of gingival bleeding scores in the MS (0.02 ± 0.22) group was significantly lower than the ACIKRC (0.77 ± 0.71) group (<i>p</i> &lt; 0.05) at t<sub>1</sub>. MS in 0.75&#xa0;mm thickness without a temporary crown and ACIKC provided similar horizontal gingival retraction abilities. However, MS showed better bleeding control.</p>

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Efficacy of hemostasis and gingival retraction of Merocel strip compared with conventional retraction cord utilizing digital gypsum model: a randomized controlled trial

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月27日

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  • Leen Dannan,
  • Mawia Karkoutly,
  • Jihad Abou Nassar

摘要

This study aimed to ascertain whether the Merocel strips (MS) can achieve adequate hemostasis and effectively retract the gingiva compared to the aluminum chloride-impregnated knitted retraction cord (ACIKRC) utilizing a digital gypsum model. It was a randomized, double-blinded, split-mouth, active-controlled clinical trial. The sample consisted of 122 abutments that were randomly divided into two groups. Group A: Gingival retraction was evaluated in 44 abutments. A single gypsum model was created by matching models before (t0) and after (t1) gingival retraction utilizing exocad software to record gingival horizontal displacement angles. Group B: Hemostatic efficacy was assessed in 78 abutments at t0 and t1. Each group was further divided into two equal sub-groups. Sub-group I: ACIKRC Size 000. Sub-group II: MS. The mean value of gingival horizontal displacement angles in the MS (25.09 ± 15.53) group was higher than the ACIKRC (19.93 ± 10.95) group (p = 0.158). The mean value of gingival bleeding scores in the MS (0.02 ± 0.22) group was significantly lower than the ACIKRC (0.77 ± 0.71) group (p < 0.05) at t1. MS in 0.75 mm thickness without a temporary crown and ACIKC provided similar horizontal gingival retraction abilities. However, MS showed better bleeding control.