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Effects of pre-extraction intermittent PTH administration on extraction socket healing in bisphosphonate administered ovariectomized rats

Authors
 Jae-Young Kim  ;  Hyo-Won Jang  ;  Jung-In Kim  ;  In-Ho Cha 
Citation
 SCIENTIFIC REPORTS, Vol.11(1) : 54, 2021-01 
Journal Title
 SCIENTIFIC REPORTS 
Issue Date
2021-01
Abstract
The purpose of this study was to investigate the effect of administering intermittent parathyroid hormone (iPTH) before tooth extraction versus after tooth extraction on the risk of developing MRONJ in experimental animal model. Twenty-five ovariectomized rats received 6 weeks of bisphosphonate therapy. They were classified into 3 groups, based on the timing of the medication, as Control, Pre-PTH and Post-PTH groups. For Control group, normal saline was administered before and after tooth extraction. iPTH was administered during 4 weeks before tooth extraction for Pre-PTH group and after tooth extraction for Post-PTH group. The animals were euthanized 8 weeks after tooth extraction. Macroscopic, histological, micro-computed tomography (micro-CT), and histomorphometric examinations were conducted. The incidences of impaired healing were 11.11% both in Pre-PTH and Post-PTH groups, which was lower than the Control group (42.86%). Bone healing in the extraction socket, based on micro-CT and histomorphometry evaluations, was best in Post-PTH and worst in Control group. The Pre-PTH group showed moderate healing pattern. Despite of limitations in this study, the authors identified Pre-PTH group seems to have positive effect on extraction socket healing. With regard to timing, administering iPTH after tooth extraction was superior to applying it before tooth extraction.
Files in This Item:
T202100213.pdf Download
DOI
10.1038/s41598-020-79787-w
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Oral and Maxillofacial Surgery (구강악안면외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Jae Young(김재영) ORCID logo https://orcid.org/0000-0002-9423-438X
Cha, In Ho(차인호) ORCID logo https://orcid.org/0000-0001-8259-2190
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/182025
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