齒根膜內 痲醉가 成犬의 齒周組織에 미치는 影響

THE HISTOLOGIC EFFECTS ON THE PERIODONTIUM IN DOGS TO THE PERIODONTAL LIGAMENT INJECTION

The purpose of this experimental study was to determine if periodontal tissues were damaged by the periodontal ligament injection administered by a pistol-type syringe, and if so, whether there would be subsequent repair. The periodontal ligament injections of 2% lidocaine with 1:100,000 epinephrine or normal saline were performed under the strong back-pressure at various sites on 3 dogs. Injected areas were examined at one hour, twenty-four hours, one week and two weeks postinjection. Histologic evaluation indicated that the disruption was very slight and was confined to the injected periodontal space and adjacent hard tissues. This slight damaged periodontium showed rapid repair, indicating that the periodontal ligament injection results in minor changes on the periodontium. So, the study would indicate that the procedure is safe to the periodontium.