一种生物活性修复材料与树脂改性玻璃离子体在钙离子释放及与乳牙牙本质的剪切粘结强度方面的比较评估——一项研究。

Comparative evaluation of a bioactive restorative material with resin modified glass ionomer for calcium-ion release and shear bond strength to dentin of primary teeth-an study.

作者信息

Bhatia Kunal, Nayak Rashmi, Ginjupalli Kishore

机构信息

Department of Paediatric and Preventive Dentistry, Manipal College of Dental Sciences, Manipal, India.

Manipal Academy of Higher Education, Karnataka, India.

出版信息

J Clin Pediatr Dent. 2022 Nov;46(6):25-32. doi: 10.22514/jocpd.2022.022. Epub 2022 Nov 1.

DOI:10.22514/jocpd.2022.022

PMID:36624901

Abstract

OBJECTIVES

This study aimed to evaluate the release of calcium ions from a bioactive restorative material and its shear bond strength (SBS) to primary dentin.

STUDY DESIGN

Occlusal surface of extracted non-carious primary molars were flattened, onto which 2 × 2 mm cylinders of ACTIVA™ BioActive Restorative (PULPDENT® Corporation, Watertown MA) or Fuji II LC (GC Corporation, Tokyo, Japan) were prepared using a polypropylene straw mould. SBS of the materials to primary dentin was tested using a universal testing machine. The mode of bond failure was assessed using stereomicroscopy. 10 mm × 2 mm disks of each material were prepared and immersed in Milli-Q water for 1, 7, 14 and 21 days. The released calcium ions in the immersion media were quantified using Atomic Absorption Spectroscopy.

RESULTS

ACTIVA™ BioActive Restorative showed a mean SBS of 4.29 ± 0.65 MPa to primary dentin and calcium ion release of 0.76 ± 0.12 ppm over 21 days.

CONCLUSION

ACTIVA™ BioActive Restorative showed a significantly higher mean SBS to primary dentin, and significantly higher calcium ion release compared to Fuji II LC.

摘要

目的

本研究旨在评估一种生物活性修复材料中钙离子的释放情况及其与乳牙本质的剪切粘结强度（SBS）。

研究设计

将拔除的无龋乳牙的咬合面磨平，使用聚丙烯吸管模具在其上制备2×2毫米的ACTIVA™生物活性修复材料（PULPDENT®公司，马萨诸塞州沃特敦）或富士II LC（GC公司，日本东京）圆柱体。使用万能试验机测试材料与乳牙本质的SBS。使用体视显微镜评估粘结失败模式。制备每种材料的10毫米×2毫米圆盘，并将其浸入Milli-Q水中1、7、14和21天。使用原子吸收光谱法定量测定浸泡介质中释放的钙离子。