中国实用口腔科杂志 ›› 2011, Vol. 4 ›› Issue (06): 341-344.
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提要:镍钛根管器械在临床上得到越来越广泛的应用,但它较不锈钢器械更易折断。镍钛根管器械的折断在长轴观上可分为扭转折断和弯曲疲劳折断,根据其断面的显微特征可分为剪切折断和疲劳折断。临床使用中可通过控制剪切力或疲劳因素来降低镍钛器械折断的风险。本文重点对镍钛根管器械折断的预防要点进行了较为全面的阐述。
关键词: 镍钛根管器械, 器械折断, 根管预备
Abstract:
Summary:Despite their increasing popularity,a major concern with the use of NiTi instruments is the possibility of unexpected separation. The mode of NiTi instrument separation may be classified into flexural fatigue and torsional fracture macroscopically,or into fatigue and shear according to high-power fractographic examination. To prevent the fracture,fatigue and shear stress should be well controlled in clinical use.
Key words: NiTi instrument;instrument fracture;root canal preparation
彭彬. 镍钛根管器械折断的类型及预防[J]. 中国实用口腔科杂志, 2011, 4(06): 341-344.
. [J]. , 2011, 4(06): 341-344.
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