title: Comparative study of oral health among trisomy 21 children living in Riyadh, Saudi Arabia: Part 2, gingival condition.
abstract: BACKGROUND
  Trisomy 21 (T21) is a congenital disorder characterized by triplication of Chromosome 21 components. Patients with T21 have an increased risk of acquiring periodontal disease due to their inability to maintain good oral hygiene. Consequently, it is important to determine an approach for disease prevention in this population.
  
  
  OBJECTIVE
  The purpose of the study was to assess the periodontal health, through the prevalence of gingivitis and plaque, among children with T21 living in Riyadh, Saudi Arabia.
  
  
  METHODS
  This study included 93 children with T21 and 99 age- and gender-matched children without T21 between the ages of 7 and 15 years. Parents were informed about the study and provided informed consent. Trained examiners using standardized tools assessed the prevalence rates of gingivitis and plaque in all children.
  
  
  RESULTS
  Gingivitis prevalence was elevated among T21 children (46.9%) compared to controls (34%) in all arch sextants except the mandibular middle (P < 0.01). Comparing the two groups, the prevalence of plaque was higher in the maxillary right sextant of the T21 group and the mandibular middle sextant of the control group (P < 0.05).
  
  
  CONCLUSIONS
  T21 children have significantly elevated plaque levels, resulting in greater prevalence of gingivitis, compared to healthy children. Preventive measure, such as oral health awareness programs, should be delivered early to parents and continued at school to encourage and motivate children.
authors.affiliation: Department of Pediatric Dentistry and Orthodontics Science/Division of Pediatric Dentistry, King Saud University, College of Dentistry, PO Box 52513, Riyadh 11573, Saudi Arabia.
authors.forename: M A
authors.initials: MA
authors.lastname: AlSarheed
keywords: Children; Gingivitis; Plaque; Trisomy 21