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Quantitative Analysis of Interdental Gingiva in Patients With Chronic Periodontitis and Transforming Growth Factor‐β1 29C/T Gene Polymorphisms

Background: The association of transforming growth factor (TGF)‐β1 29C/T gene polymorphisms with level of tissue breakdown and periodontal disease progression is not clear. In this study, quantitative parameters of interdental papilla are investigated in patients with chronic periodontitis (CP) and...

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Published in:Journal of periodontology (1970) 2014-02, Vol.85 (2), p.281-289
Main Authors: Heidari, Zahra, Mahmoudzadeh‐Sagheb, Hamidreza, Hashemi, Mohammad, Rigi‐Ladiz, Mohammad Ayub
Format: Article
Language:English
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Summary:Background: The association of transforming growth factor (TGF)‐β1 29C/T gene polymorphisms with level of tissue breakdown and periodontal disease progression is not clear. In this study, quantitative parameters of interdental papilla are investigated in patients with chronic periodontitis (CP) and TGF‐β1 29C/T gene polymorphisms. Methods: Sixty gingiva samples were included. After determination of TGF‐β1 29C/T gene polymorphisms using tetra‐primer amplification refractory mutation system/polymerase chain reaction (T‐ARMS‐PCR), 15 gingival tissue samples from patients with CP in each genotype (TT, TC, and CC) were considered as case groups. Fifteen control samples were also collected from healthy individuals. After tissue processing, interdental gingiva tissues were exhaustively sectioned into 4‐μm‐thick sections. Ten to 13 sections were sampled by systematic uniform random sampling and stained with Masson trichrome, and the volume density (Vv) of the gingival components was estimated using Cavalieri estimation. Results: Statistically significant differences were found in Vv of epithelium, connective tissue, collagenous and non‐collagenous matrix, and blood vessels between control and CP groups (P
ISSN:0022-3492
1943-3670
DOI:10.1902/jop.2013.130087