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Histological characteristics of newly formed cementum in surgically created one-wall intrabony defects in a canine model

Authors
 Jung-Chul Park  ;  Yoo-Jung Um  ;  Ui-Won Jung  ;  Chang-Sung Kim  ;  Seong-Ho Choi  ;  Chong-Kwan Kim 
Citation
 JOURNAL OF PERIODONTAL AND IMPLANT SCIENCE, Vol.40(1) : 3-10, 2010 
Journal Title
 JOURNAL OF PERIODONTAL AND IMPLANT SCIENCE 
ISSN
 2093-2278 
Issue Date
2010
Keywords
Animal models ; Dental cementum ; Periodontal guided tissue regeneration
Abstract
PURPOSE: Periodontal regenerative therapies for defects created by severe periodontitis are mainly focused on bone regeneration. Although cementum regeneration needs to be better understood, it is believed to play an important role in periodontal regeneration. The first step toward a full understanding of cementum regeneration is to compare repaired cementum to pristine cementum. This study, which used histological techniques, was designed to focus on cementum regeneration and to compare pristine cementum to repaired cementum after surgical procedures with 8 and 24 week healing periods in a canine model. 0aMETHODS: Buccal and lingual mucoperiosteal flaps of 10 beagle dogs were surgically reflected to create critical-sized defects. Intrabony one-wall defects, of which dimension is 4 mm width and 5 mm depth, were made at the distal aspect of mandibular second premolars and the mesial aspect of mandibular fourth premolars in the right and left jaw quadrants. Animals were sacrificed after 8 and 24 weeks post-surgery for histological specimen preparation and histometric analysis. 0aRESULTS: The repaired cementum was composed mostly of acellular cementum and cellular mixed fiber cementum and was thicker in the apical area than in the coronal area. The acellular cementum of the supracrestal area appeared to be amorphous. The newly formed cellular cementum was partially detached from the underlying circumpulpal dentin, which implied a weak attachment between new cementum and dentin, and this split was observed to a lesser extent in the 24 week group than in the 8 week group. The vertical height of the repaired cementum was greater in the 24 week group than in the 8 week group. 0aCONCLUSIONS: Within the limitations of this study, we can conclude that repaired cementum after root planing was mainly acellular cementum and cementum tissue that matured to a shape similar to pristine cementum as the healing progressed from 8 to 24 weeks
Files in This Item:
T201001145.pdf Download
DOI
10.5051/jpis.2010.40.1.3
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Periodontics (치주과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chong Kwan(김종관)
Kim, Chang Sung(김창성) ORCID logo https://orcid.org/0000-0003-3902-1071
Park, Jung Chul(박정철)
Um, Yoo Jung(엄유정)
Jung, Ui Won(정의원) ORCID logo https://orcid.org/0000-0001-6371-4172
Choi, Seong Ho(최성호) ORCID logo https://orcid.org/0000-0001-6704-6124
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/100994
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