Langerhans' cell histiocytosis in a 5-year-old girl: evidence of periodontal pathogens.

Background: Langerhans' cell histiocytosis (LCH) is a rare disorder characterized by Langerhans' cell proliferation in various organs or tissues. When periodontal tissue is involved, clinical manifestations can vary from gingival recession and pocket formation to severe alveolar bone loss. This case report describes periodontal pathogens found in the pockets of involved primary teeth.

Porphyromonas gingivalis lipids and diseased dental tissues.

Background/aim: Porphyromonas gingivalis synthesizes several classes of dihydroceramides and at least one of these lipid classes promotes proinflammatory secretory reactions in gingival fibroblasts as well as alters fibroblast morphology in culture. The purpose of this investigation was to determine whether the dihydroceramide lipids of P. gingivalis are recovered in lipid extracts of subgingival plaque, diseased teeth, and diseased gingival tissue samples.

The effect of cigarette smoking on the severity of periodontal disease among older Thai adults.

Background: The aim of this study is to determine the effect of cigarette smoking on the severity of periodontitis in a cross-sectional study of older Thai adults.

Methods: The study population consisted of 1,960 subjects (age 50 to 73 years old). All subjects received both medical and dental examinations.

Risk indicators of periodontal disease in older Thai adults.

Background: The aim of this study was to identify risk indicators for periodontitis using cross-sectional data from a group of older Thai adults.

Methods: The study group consisted of 2,005 individuals, aged 50 to 73 years old. They received detailed medical examinations and periodontal examinations including plaque score, probing depth, and clinical attachment level.