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The thermodynamic behaviour of labial gingiva in patients with destructive periodontal disease
Author(s) -
Mörmann W. H.,
Bösigur P.,
Grau P.,
Scaroni F.
Publication year - 1985
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/j.1600-051x.1985.tb01383.x
Subject(s) - medicine , dentistry , periodontitis , homogeneous , periodontal disease , thermography , soft tissue , incisor , orthodontics , pathology , physics , infrared , optics , thermodynamics
The temperature changes of the labial gingiva and mucosa of the maxillary incisor regions were investigated using computer‐assisted thermography. 9 patients with destructive periodontal disease (7 female and 2 male, aged between 12 and 33 years, undergoing periodontal treatment for periods varying from 6 months to 12 years) and 10 volunteers with clinically normal periodontia (6 female and 4 male, aged between 19 and 26 years) took part in this study. The gingivae and mucosae were initially cooled using a homogenous flow of air (15 1/min at 15deg;C) for 3 min. 20 s after the cooling phase, temperature increases of these soft tissues were sequentially recorded using 48 thermograms per person. This procedure was repeated 4 times for each person examined. The weighted mean of the time constants of the tissue re‐warming curves was significantly higher ( p < 0.025) for the periodontitis group (152 ± 6 s) compared to the clinically healthy group (110 ±9 s). The different thermodynamic behaviour between the 2 groups studied indicated differences in the blood‐flow and/ or its regulation.