Hondrum S O
USA Area Dental Laboratory, Dental Materials Laboratory/COL Hondrum, Fort Gordon, GA 30905-5661, USA.
Mil Med. 1998 Jun;163(6):381-5.
New temporary dental restorative materials are an important military requirement. This study compares the critical properties of the currently used temporary material, reinforced zinc oxide-eugenol (ZOE), with those of a glass ionomer restorative material (GI), a high-viscosity modified glass ionomer material (MGI), and two resin-modified glass ionomer materials (RMGIs). Properties tested included compressive and tensile strength, rigidity, hardness, bond strength, working and setting times, and storage stability. Ranked results for compressive strength, rigidity, and hardness were MGI > GI > RMGI > ZOE; for tensile strength they were RMGI > MGI > GI > ZOE; and for storage stability they were ZOE > MGI > GI > RMGI. Working and setting times were all within reasonable clinical limits, and bond strength was heavily dependent on tooth surface preparation. Although none of the materials tested met all of the ideal requirements, the high-viscosity glass ionomer material offers the most promise for military field use.
新型临时牙科修复材料是一项重要的军事需求。本研究将目前使用的临时材料——增强型氧化锌丁香酚（ZOE）的关键性能与玻璃离子修复材料（GI）、高粘度改性玻璃离子材料（MGI）以及两种树脂改性玻璃离子材料（RMGIs）的关键性能进行了比较。测试的性能包括抗压强度、拉伸强度、刚性、硬度、粘结强度、操作和凝固时间以及储存稳定性。抗压强度、刚性和硬度的排名结果为MGI > GI > RMGI > ZOE；拉伸强度的排名结果为RMGI > MGI > GI > ZOE；储存稳定性的排名结果为ZOE > MGI > GI > RMGI。操作和凝固时间均在合理的临床范围内，粘结强度很大程度上取决于牙齿表面处理。尽管所测试的材料均未完全满足所有理想要求，但高粘度玻璃离子材料在军事野战应用方面最具潜力。
