口腔医学研究 ›› 2025, Vol. 41 ›› Issue (10): 901-906.DOI: 10.13701/j.cnki.kqyxyj.2025.10.011

• 牙体修复学研究 • 上一篇    下一篇

4种印章材料行后牙Ⅰ类洞复合树脂直接修复的体外对比研究

王豪杰*, 张运祥, 李敏, 张览锐, 潘红, 楚媛媛   

  1. 开封市口腔医院牙体牙髓科 河南 开封 475000
  • 收稿日期:2025-05-12 发布日期:2025-10-23
  • 通讯作者: *王豪杰,E-mail:13837863718@163.com
  • 作者简介:王豪杰(1985~ ),男,河南巩义人,副主任医师,本科,主要从事牙体牙髓病学相关研究。
  • 基金资助:
    开封市科技计划项目(编号:2203064)

In Vitro Comparative Study of Four Stamp Materials for Direct Composite Resin Restoration of Class Ⅰ Cavities in Posterior Teeth

WANG Haojie*, ZHANG Yunxiang, LI Min, ZHANG Lanrui, PAN Hong, CHU Yuanyuan   

  1. Department of Endodontics, Kaifeng Dental Hospital, Kaifeng 475000, China
  • Received:2025-05-12 Published:2025-10-23

摘要: 目的: 比较4种材料制作的印章,并评价不同印章用于后牙Ⅰ类洞复合树脂直接充填修复后的效果。方法: 体外实验分两部分进行。第一部分:选择同一批次制作的右下第一磨牙树脂牙40颗,随机分为4组,分别为牙龈保护剂印章充填组(A组)、流动树脂印章充填组(B组)、硅橡胶印章充填组(C组)、透明硅橡胶印章充填组(D组),分别用这4种印章材料进行印章制备,记录每个印章制备所需时长,检查印章气泡产生数量。扫描各组充填前牙齿牙合面形态,制备相同大小的Ⅰ类洞,用4种印章行复合树脂直接修复,再次扫描充填后牙合面形态,与充填前牙合面形态进行3D比较,计算均方根值(root mean square,RMS)进行分析。第二部分:选择新鲜拔除的第三磨牙25颗并随机分为5组,除设立上述4组外,增加常规树脂充填组为E组,制备4 mm深的Ⅰ类洞并充填,经冷热循环老化技术后行扫描电镜(scanning electron microscope,SEM)观察微渗漏情况,记录裂隙宽度并定量分析。结果: 第一部分4组印章制备时长、气泡数量、RMS值比较均存在统计学差异(P<0.05),其中,C、D组耗时较长,产生气泡数量较多,RMS值较大,均与A、B两组比较有统计学差异(P<0.05),A、B组之间比较无统计学差异(P>0.05);第二部分5组微渗漏裂隙宽度和树脂上半段气泡数相比较,差异无统计学意义(P>0.05)。结论: 高流动性的光固化树脂材料能精确恢复后牙Ⅰ类洞的牙合面形态,且制备时长短,产生气泡量少,是用于印章法补牙的优选。

关键词: 复合树脂直接修复, 印章材料, 牙合面复制精确性, 微渗漏

Abstract: Objective: To compare four types of matrices fabricated from different materials and evaluate the effects of different matrices on the clinical outcomes of direct composite resin restorations in posterior teeth with Class Ⅰ cavities. Methods: The in vitro experiment was conducted in two parts. Part Ⅰ: Forty resin-made right mandibular first molars from the same production batch were randomly divided into 4 groups: gingival protector stamp filling group (Group A), flowable resin stamp filling group (Group B), silicone rubber stamp filling group (Group C), and transparent silicone rubber stamp filling group (Group D). Stamp preparations were fabricated using four materials, and the time required for each stamp preparation was recorded. The number of bubbles generated in the stamps was examined. The occlusal morphology of the teeth in each group was scanned before filling. Class Ⅰ cavities of identical size were prepared, and direct composite resin restorations were performed using the four types of stamps. The post-filling occlusal morphology was scanned and compared three-dimensionally with the pre-filling morphology. The root mean square (RMS) values were calculated and analyzed. Part Ⅱ: Twenty-five freshly extracted third molars were randomly divided into 5 groups. In addition to the aforementioned four groups (A-D), a conventional resin filling group (Group E) was included. Class Ⅰ cavities with a depth of 4 mm were prepared and filled. After the cycle of heating and cooling, scanning electron microscopy (SEM) was used to observe the microleakage. Gap widths were recorded and quantitatively analyzed. Results: Part Ⅰ: The four groups showed statistically significant differences in preparation time, number of bubbles, and RMS values (P<0.05). Groups C and D required longer preparation times, produced more bubbles, and demonstrated higher RMS values, all showing statistically significant differences compared to Groups A and B (P<0.05). No statistically significant differences were observed between Groups A and B in any parameters (P>0.05). Part Ⅱ: No statistically significant differences were found among the five groups in terms of microleakage gap width and number of bubbles in the upper half of the resin (P>0.05). Conclusion: The high-flow light-curing resin material demonstrated excellent efficacy in precisely restoring the occlusal morphology of posterior Class Ⅰ cavities, exhibiting shorter preparation time and fewer air bubbles generated during fabrication. It represents a promising choice for the stamp technique in dental restorations.

Key words: composite resin direct restoration, stamp material, occlusal surface replication accuracy, microleakage