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利用药物加速正畸牙移动以缩短疗程，作者们已另有报导。在正畸治疗过程中，如何缩短维持期是缩短正畸疗程的课题之一。本文为探索中药缩短兔牙维持期的动物实验。选用２ｋｇ兔２４只随机分为五组。三组用药，一组用蒸馏水，一组为对照组。当兔下中切牙在矫治力作用下分开后，分别安装固位装置，并注射药物及蒸馏水隔天一次，持续一周后，去除维持装置，观察其复位情况，结果显示骨碎补注射组，复位距离为，而对照组为。处死动物后，取下颌制成组织切片观察，注射药组，牙槽骨表面新生骨小梁丰富，成骨细胞增生活跃，牙周纤维数目明显增加，排列整齐，血管反应明显，而对照组，新生骨小梁很少或无，成骨细胞增生不明显，牙周数目未见增多，血管反应亦少。
The use of drugs to accelerate orthodontic tooth movement to shorten the course of treatment, the authors have reported separately. In the process of orthodontic treatment, how to shorten the maintenance period is one of the topics to shorten the course of orthodontic treatment. This article is to explore Chinese medicine to shorten the period of rabbit teeth animal experiments. 24 rabbits randomly selected 2kg divided into five groups. Three groups of drugs, a group with distilled water, a control group. When the rabbit under the incisors in orthodontic force separated, respectively, the installation of retention devices, and injection of drugs and distilled water every other day for one week after the removal of the maintenance device to observe the reset situation, the results show that drynaria injection group, The reset distance is, while the control group is. After the animals were sacrificed, the mandibular jaws were removed for histological observation. In the injected group, the surface of the alveolar bone was enriched with new trabecular bone. The osteoblasts proliferated actively and the number of periodontal fibers increased significantly. The alignment and neovascularization were obvious. In the control group, Little or no new trabecular bone, osteoblast proliferation is not obvious, no increase in the number of periodontal, vascular response is also less.