Biocompatibility of a glass ionomer luting agent. 2. Crown cementation.
Biocompatibility of a glass ionomer luting agent. 2. Crown cementation.
复制标题
玻璃离聚物稀释剂的生物相容性。
DOI：
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发表时间：
1991
影响因子：
1.4
通讯作者：
G. Ecker
中科院分区：
文献类型：
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作者：
C. Pameijer;H. Stanley;G. Ecker
在该实验中，在四种灵长类动物中制备了64个冠制备物。最终的印象，模具制造，蜡模型和铸件，采用传统的临床和实验室技术。用玻璃离子粘固剂（GI）和磷酸锌粘固剂（ZOP）粘固通风冠和非通风冠。一些制剂用氢氧化钙液体保护。在相同的动物上，在不用于牙冠的牙齿中，制备V类洞，并通过模拟牙冠粘固过程中产生的液压的压力技术插入GI和ZOP。5天和60天后，处死动物，解剖钳口，固定在福尔马林中，并准备进行组织学评价。在64个骨水泥牙冠中，有1个无法解释。在GI（5天）、GI（60天）、ZOP（60天）、ZOP（5天）和GI（60天）的未通气牙冠中，观察到大于或等于1度（1-4度）的炎症反应。液体氢氧化钙的使用降低了反应的强度，特别是当存在小RDT时。可以得出结论，当RDT为1 mm或更大时，所有组中的骨水泥均无毒。当估计RDT小于或等于1 mm时，建议使用氢氧化钙内衬。在V类制剂中放置密封剂，并施加压力，导致类似于牙冠粘固的反应。（250字处删节）
In this experiment, 64 crown preparations were made in four primates. Final impressions, die fabrication, wax patterns and castings were achieved using conventional established clinical and laboratory techniques. Vented and unvented crowns were cemented with a glass ionomer cement (GI) and a zinc phosphate cement (ZOP). Some preparations were protected with calcium hydroxide liquid. On the same animals, in teeth not used for crowns, Class V cavities were prepared and GI and ZOP inserted by means of a pressure technique imitating hydraulic pressure generated during crown cementation. After periods of 5 and 60 days, the animals were sacrificed, the jaws dissected, fixed in formalin and prepared for histological evaluation. Of the 64 cemented crowns, one was unaccounted for. Of the unvented crowns with GI (5 days), vented crowns with GI (60 days), unvented crowns with ZOP (60 days), Class V with ZOP (5 days) and GI (60 days) with a remaining dentin thickness (RDT) of less than 1 mm, inflammatory responses of greater than or equal to 1 degree (on a scale 1-4 degrees) were observed. The use of liquid calcium hydroxide reduced the intensity of the reactions, in particular when small RDTs were present. It can be concluded that when RDTs of 1 mm or more were present, the cements in all groups were non-toxic. When it is estimated that the RDT is less than or equal to 1 mm, the use of a calcium hydroxide liner is recommended. Placement of luting agents in Class V preparations with pressure resulted in reactions resembling crown cementation.(ABSTRACT TRUNCATED AT 250 WORDS)