根尖周病是指发生在牙根尖周围组织，如牙骨质、根尖周围的牙周膜和牙槽骨等的疾病。
根尖周病变 periapical lesion
牙髓病和根尖周病 Pulpal and Periapical Disease
牙髓和根尖周病 the diseases of dental pulp and periapex
根尖周疾病 periapical diseases
牙髓和根尖周组织疾病 Diseases of pulp and periapical tissues
结论：本方法是治疗急慢性根尖周病的有效方法。
Conclusion: Dry pipe pharmacotherapy is a modus operandi for acute and chronic disease of periapical.
根管治疗是现今牙髓病和根尖周病的基本治疗方法。
Root canal therapy is a fundamental method of treating pulpal and periapical diseases nowadays.
目的：探讨根管治疗一次法治疗牙髓病及根尖周病的疗效。
Objective: To explore the effect of single therapy for root canal in the treatment of pulpit is and periapical periodontitis.
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