下颌切牙根管形态：Mandibular Incisors
p; impossible to perforate in a lingual direction because of the bur shank's contacting the incisal edge. The ribbon-shaped canal is common enough to be considered normal and demands special attention in cleaning and shaping. Ribbon-shaped canals in narrow hourglass cross-sectional anatomy invite lateral perforation by endodontic files and Gates-Glidden drills. Minimal flaring and dowel space preparation are indicated to ensure against ripping through proximal root walls. Apical curvatures and accessory canals are common in mandibular incisors (Burns RC, Buchanan LS. Tooth Morphology and Access Openings. Part One: The Art of Endodontics in Pathway of Pulp, 6th Ed. p. 152).
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本文相关关键词:根管形态 根管治疗
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