硝酸镓作为根管敷料对大鼠牙齿延迟再植效果的形态学和显微镜评估。
Morphometric and microscopic evaluation of the effect of gallium nitrate as a root canal dressing in rat teeth submitted to late replantation.
作者信息
Mori Graziela Garrido, Garcia Roberto Brandão, de Moraes Ivaldo Gomes, Bramante Clóvis Monteiro, Bernardineli Norberti
机构信息
Adamantina Dental School, São Paulo, Brazil.
出版信息
J Appl Oral Sci. 2006 Dec;14(6):405-9. doi: 10.1590/s1678-77572006000600004.
The purpose of this study was to test a gallium nitrate solution, a resorption inhibitor, employed as a root canal dressing in teeth submitted to late replantation. Thirty maxillary right central incisors of rats were avulsed and kept dry for thirty minutes. The teeth were instrumented and the root surfaces were treated with 1% hypochlorite solution followed by application of 2% sodium fluoride. Thereafter, the teeth were divided into two groups according to the root canal dressing: Group I, solution of gallium nitrate; and Group II, calcium hydroxide paste. The teeth were then replanted in their respective sockets. The animals were killed at 15, 30 and 60 days after replantation and the samples were processed for morphometric and microscopic analysis. The results demonstrated that the gallium nitrate solution and the calcium hydroxide paste limited the root resorption, yet they did not impair its occurrence. It may be concluded that gallium nitrate solution and calcium hydroxide paste demonstrated similar performance.
本研究的目的是测试一种硝酸镓溶液，一种吸收抑制剂，作为晚期再植牙根管敷料的应用效果。将30只大鼠的上颌右侧中切牙拔除并干燥30分钟。对牙齿进行根管预备，牙根表面先用1%次氯酸盐溶液处理，然后应用2%氟化钠。之后，根据根管敷料将牙齿分为两组：第一组，硝酸镓溶液；第二组，氢氧化钙糊剂。然后将牙齿重新植入各自的牙槽窝。在再植后15、30和60天处死动物，对样本进行形态计量学和显微镜分析。结果表明，硝酸镓溶液和氢氧化钙糊剂均能限制牙根吸收，但并不能阻止其发生。可以得出结论，硝酸镓溶液和氢氧化钙糊剂表现出相似的性能。
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