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作者研究用超声波作活髓切断术的效果,治疗138例牙髓炎,年龄15～55岁,共治疗150个牙(单根牙32,多根牙118),急性局灶性牙髓炎39,急性弥漫性牙髓炎35,慢性纤维性牙髓炎70,慢性肥大性牙髓炎6。用苏联产医用超声装置YPCK-7H-18和一组特制波导管,超声工作头有充填器型和挖器型,直径1～3mm。超声发生器规格:频率24.5～28.5千赫兹,工作头振幅30～35μm。牙髓麻醉后制备龋洞,然后用充填器型超声波工作头经过呋喃西林液(1∶5000)处理龋洞1分钟,接连不断地用注射器添加呋喃西林液。吸干窝洞,用消毒牙钻除去髓室
The authors studied the effect of using ultrasound as a pulpotomy for the treatment of 138 cases of pulpitis, aged 15 to 55 years, for a total of 150 teeth (32 single teeth, multiple teeth 118), acute focal pulpitis 39 , Acute diffuse pulpitis 35, Chronic fibrosing pulpitis 70, Chronic hypertrophic pulpitis 6. With Soviet-made medical ultrasound device YPCK-7H-18 and a group of special wave guide, ultrasonic working head filled type and digging type, diameter 1 ~ 3mm. Ultrasonic generator specifications: Frequency 24.5 ~ 28.5 kilohertz, working head amplitude 30 ~ 35μm. The dental cavity was prepared after anesthesia of the dental pulp, and then the cavity was treated for 1 minute with nitrofuranthin solution (1: 5000) using a filler-type ultrasonic working head, followed by continuous addition of nitrofurazone solution with a syringe. Suction holes, with sterile dental drill to remove the pulp chamber