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砷性根尖周炎多由于用亚砷酸失活牙髓时,根管药物刺激性太大,患者未能按时复诊,封药时间过长;用药量过大;患牙侧枝根管位置较高,药物易扩散到牙周组织;用法不当,如年轻恒牙,牙髓血运丰富,根尖孔粗大,药物易扩散到根尖周组织等原因所造成。选择我院口腔科门诊收治的应用氢氧化钙
Arsenic periapical dermatitis due to the use of arsenic acid inactivation of dental pulp, root canal drug irritation is too large, the patient failed to referral on time, sealing time is too long; dosage is too large; , The drug is easy to spread to the periodontal tissue; improper use, such as young permanent teeth, pulp rich blood supply, apical foramen magnum, the drug is easy to spread to the periapical tissue caused by other reasons. Choose our hospital stomatology clinic application of calcium hydroxide