title: Cannabis use and destructive periodontal diseases among adolescents.
abstract: OBJECTIVE
  The aim of this experiment was to investigate the association between cannabis use and destructive periodontal disease among adolescents.
  
  
  METHODS
  Data from a population screening examination carried out among Chilean high school students from the Province of Santiago were used to determine whether there was an association between the use of cannabis and signs of periodontal diseases as defined by (1) the presence of necrotizing ulcerative gingival (NUG) lesions or (2) the presence of clinical attachment loss (CAL) > or =3 mm. The cannabis exposures variables considered were "Ever use of cannabis" (yes/no) and "Regular use of cannabis" (yes/no). The associations were investigated using multiple logistic regression analyses adjusted for age, gender, paternal income, paternal education, frequency of tooth-brushing and time since last dental visit.
  
  
  RESULTS
  Multiple logistic regression analyses showed that "Ever use of cannabis" was significantly negatively associated with the presence of NUG lesions (OR=0.47 [0.2;0.9]) among non-smokers only. No significant associations were observed between the presence of CAL > or =3 mm and cannabis use in either of the smoking groups.
  
  
  CONCLUSIONS
  There was no evidence to suggest that the use of cannabis is positively associated with periodontal diseases in this adolescent population.
authors.affiliation: Department of Periodontology, Faculty of Health Sciences, School of Dentistry, University of Aarhus, Denmark. rlopez@odont.au.dk
authors.forename: Rodrigo
authors.initials: R
authors.lastname: López
authors.forename: Vibeke
authors.initials: V
authors.lastname: Baelum
mesh_terms: D000293:Adolescent; D002648:Child; D002677:Chile / Q000453:epidemiology; D015331:Cohort Studies; D015897:Comorbidity; D005260:Female; D005892:Gingivitis, Necrotizing Ulcerative / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008385:Marijuana Smoking / Q000009:adverse effects / Q000453:epidemiology*; D017622:Periodontal Attachment Loss / Q000453:epidemiology*; D010518:Periodontitis / Q000453:epidemiology*; D012044:Regression Analysis; D055815:Young Adult