Dannan Leen, Karkoutly Mawia, Nassar Jihad Abou
Department of Fixed Prosthodontics, Faculty of Dentistry, Damascus University, Damascus, Syrian Arab Republic.
Department of Pediatric Dentistry, Faculty of Dentistry, Damascus University, Damascus, Syrian Arab Republic.
Sci Rep. 2025 Mar 27;15(1):10508. doi: 10.1038/s41598-025-95612-8.
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) and after (t) gingival retraction utilizing exocad software to record gingival horizontal displacement angles. Group B: Hemostatic efficacy was assessed in 78 abutments at t and t. 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 t. MS in 0.75 mm thickness without a temporary crown and ACIKC provided similar horizontal gingival retraction abilities. However, MS showed better bleeding control.
本研究旨在利用数字石膏模型确定美罗赛条带（MS）与浸有氯化铝的针织收缩龈线（ACIKRC）相比，是否能实现充分止血并有效收缩牙龈。这是一项随机、双盲、分口、阳性对照的临床试验。样本包括122个基牙，随机分为两组。A组：在44个基牙上评估牙龈收缩情况。利用exocad软件通过匹配牙龈收缩前后（t）的模型创建单个石膏模型，以记录牙龈水平位移角度。B组：在t和t时评估78个基牙的止血效果。每组进一步分为两个相等的亚组。亚组I：000号ACIKRC。亚组II：MS。MS组（25.09±15.53）牙龈水平位移角度的平均值高于ACIKRC组（19.93±10.95）（p = 0.158）。在t时，MS组（0.02±0.22）牙龈出血评分的平均值显著低于ACIKRC组（0.77±0.71）（p < 0.05）。厚度为0.75毫米且无临时冠的MS与ACIKC提供了相似的牙龈水平收缩能力。然而，MS显示出更好的出血控制效果。
