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Effect of fibroblast growth factor on injured periodontal ligament and cementum after tooth replantation in dogs

 Sang Joun Yu  ;  Jung Seok Lee  ;  Ui Won Jung  ;  Joo Cheol Park  ;  Byung Ock Kim  ;  Seong Ho Choi 
 Journal of Periodontal & Implant Science, Vol.45(3) : 111-119, 2015 
Journal Title
 Journal of Periodontal & Implant Science 
Issue Date
PURPOSE: The purpose of this animal study was to perform a histological and histomorphometric analysis in order to elucidate the effect of fibroblast growth factor-2 (FGF-2) on injured periodontal ligament (PDL) and cementum after tooth replantation in dogs. METHODS: The roots of 36 mandibular premolars from six mongrel dogs were used in this study. The roots were randomly divided into three groups: (1) a positive control group (n=12), in which the PDL was retained; (2) a negative control group (n=12), in which the PDL and the cementum between the notches were removed; and (3) an experimental group (n=12), in which the PDL and the cementum between the notches were removed and the roots were soaked in an FGF-2 solution (30 µg/0.1 mL). After treating the root surfaces, the extracted roots were replanted into extraction sockets. The animals were sacrificed four and eight weeks after surgery for histologic and histomorphometric evaluation. RESULTS: At four and eight weeks, normal PDLs covered the roots in the positive control group. In the negative control group, most replanted roots showed signs of replacement resorption. In the experimental group, new PDL-like tissue and cementum-like tissue were observed to partially occupy the region between the root surfaces and the newly formed bone. Histomorphometric analysis showed that the mean length of the newly formed cementum-like tissue on the roots treated with FGF-2 was significantly greater than that of the tissue on the roots in the negative control group (four weeks, P=0.008; eight weeks, P=0.042). However, no significant differences were observed between the roots treated with FGF-2 and the negative control roots with respect to newly formed PDL-like tissue. CONCLUSIONS: The results of this study suggest that use of FGF-2 on injured root surfaces promotes cementogenesis after tooth replacement in dogs.
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1. Journal Papers (연구논문) > 2. College of Dentistry (치과대학) > Dept. of Periodontics (치주과학교실)
Yonsei Authors
이중석(Lee, Jung Seok) ORCID logo https://orcid.org/0000-0003-1276-5978
정의원(Jung, Ui Won) ORCID logo https://orcid.org/0000-0001-6371-4172
최성호(Choi, Seong Ho) ORCID logo https://orcid.org/0000-0001-6704-6124
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