The association of cigarette smoking with alveolar bone loss in postmenopausal females

Background, aims: The purpose of this 2-year longitudinal clinical study wa s to determine the impact of smoking on alveolar bone height and density ch anges in postmenopausal females. Methods: 59 postmenopausal women completed this study, including 38 nonsmok ers and 21 smokers, All subjects had a history of periodontitis, participat ed in 3- to 4-month periodontal maintenance programs and were within 5 year s of menopause at the study outset. 4 vertical bite-wing radiographs of pos terior sextants were taken at baseline and 2-year visits. Radiographs were evaluated using computer-assisted densitometric image analysis (CADIA); cha nges in interproximal alveolar bone density and changes in alveolar bone he ight were determined. Relative clinical attachment levels (RCAL) and presen ce/absence of plaque and bleeding on probing were recorded. Results: Smokers exhibited a higher frequency of alveolar bone height loss (p< 0.05) and crestal (p<0.03) and subcrestal (p<0.02) density loss relativ e to nonsmokers. Smokers exhibited a trend (p<0.08) toward a higher frequen cy of greater than or equal to 2.0 mm RCAL loss over the 2-year period. Pla que and bleeding on probing did not differ between smokers and non-smokers. A significant interaction, determined by repeated measures ANOVA, was note d between systemic bone mineral density (BMD) at the lumbar spine and smoki ng on alveolar bone density change ((p<0.05). Only non-smoking patients wit h normal BMD realized a mean net gain in alveolar bone density; osteoporoti c/osteopenic subjects (n=25) and smokers lost alveolar bone density. Conclusion: Postmenopausal female smokers were more likely to lose alveolar bone height and density than non-smokers with a similar periodontitis, pla que and gingival bleeding experience. In addition, both smoking and osteopo rosis/ osteopenia provided a negative influence on alveolar bone.