title: [Effect of smoking on resorption of residual alveolar ridges in complete denture wearers].
abstract: BACKGROUND
  Based on literature data it is obvious that there is a connection between smoking and periodontal diseases. Alveolar bone loss increases with smoking. Tobacco smoking affects the proportion of subgingival bacterial flora by influencing oxidoreduction potential of dental plaque and thus making conditions for development of anaerobic bacteria. According to some researchers, smoking affects the mineral component of bone tissue. Orthopantomograms show higher level of alveolar bone loss in smokers than in nonsmokers with the same level of oral hygiene. The aim of this study was to establish if smoking affects alveolar bone loss in complete denture wearers.
  
  
  METHODS
  Our clinical investigation included 60 patients of both sexes (30 smokers and 30 nonsmokers) all complete dentures wearers. All patients met study criteria: jaw relation and smokers who smoke over 20 cigarettes per day. All subjects were interviewed, and after that orthopantomograms were made. They were used to calculate the degree of alveolar bone loss.
  
  
  RESULTS
  The examined subjects were approximately of the same age. Mean age of smokers was 59.9 and nonsmokers 61.8. It was established that differences regarding resorption in men were not significant. The degree of resorption in women smokers and women non-smokers was different, but differences were not significant.
  
  
  CONCLUSIONS
  It has been proven that the number of cigarettes smoked per day is very important. It is considered that the risk of oral epithelial dysplasia increases when smoking more than 20 cigarettes per day. Considering our results regarding resorption of edentulous alveolar ridge in smokers and nonsmokers, we concluded that there were no significant differences. There are opinions in literature that smoking is not an etiological factor in resorption, but there are some opinions that smoking is connected with the degree of resorption in periodontium. The analyses of resorptive changes in edentuolous smokers were done only around implants and it was estimated that smoking has more influence than other clinical risk factors.
  
  
  CONCLUSIONS
  On the bases of our research we may conclude that smoking does not directly affect the degree of resorption of edentulous alveolar ridge with complete denture wearers.
authors.affiliation: Medicinski fakultet Klinika za stomatologiju, 21000 Novi Sad, Hajduk Veljkova 12.
authors.forename: Dubravka
authors.initials: D
authors.lastname: Marković
authors.forename: Bojana
authors.initials: B
authors.lastname: Jefić
authors.forename: Duska
authors.initials: D
authors.lastname: Blagojević
authors.forename: Larisa
authors.initials: L
authors.lastname: Blazić
mesh_terms: D016301:Alveolar Bone Loss / Q000209:etiology*; D003824:Denture, Complete; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012907:Smoking / Q000009:adverse effects*