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患者,男性,66岁。右侧下颌尖牙松动Ⅱ度,牙尖磨耗明显,颊侧牙颈部楔状缺损,龈萎缩,牙根暴露5~6 mm,牙周袋深约4~5 mm。局麻下拔除患牙,患牙为颊舌两根,颊根(长约14.50mm)稍长于舌根(长约13.90 mm),较舌根粗壮,颊根较弯,舌根比较直,冠长为11.30 mm。离体牙X线片显示两根管,为双根双管型,两个根管口(图1)。
Patient, male, 66 years old. Right mandibular canine loosening Ⅱ degree, obvious wear on the tip of the tooth, wedge-shaped defect on the buccal side of the neck, gingival recession, root exposure 5 ~ 6 mm, periodontal pocket depth of about 4 ~ 5 mm. Local anesthesia to remove the affected teeth, the teeth for the buccal and lingual two, the buccal root (about 14.50mm) slightly longer than the tongue (about 13.90mm), more thicker than the tongue, buccal root more curved, tongue base straight, the culm length of 11.30 mm. Isolated teeth X-ray film shows two tubes, double root double tube, two root canal mouth (Figure 1).