0.6 for unaffected, healthy controls. These data suggest that there is a strong association between a peripheral blood PMN defect and refractory periodontitis. Furthermore, these studies suggest that tobacco use may contribute to this association. The effect of changed smoking habits on marginal alveolar bone loss. A longitudinal study.
Tobacco smoking is a factor claimed to be of influence on alveolar bone loss.
The purpose of the present study was to investigate whether the effect of changed smoking habits is associated with the progress of proximal marginal alveolar bone loss as measured on intraoral radiographs. The study comprised 349 individuals with twenty or more remaining teeth examined in 1970 and1980. The result is in agreement with the hypothesis that giving up smoking produces favourable effects also with regard to the attachment of the teeth in the jaw-bone.