Abstract
Although the harmful effects of tobacco smoking on oral health have been well documented, only very few studies have investigated the effects of Cannabis sativa (marijuana) smoking on bone loss around teeth and dental implants. Indeed, cannabis can interfere with bone physiopathology because of its effect on osteoblast and osteoclast activity. However, its impact on oral tissues is still controversial. Thus, this chapter discusses whether cannabis smoke can influence oral bone loss and bone formation around dental implants. Cannabis second hand smoking was studied in two animal models. These studies have shown that when tetrahydrocannabinol (THC) is present in urine, an increase of bone loss can be seen around teeth, and around dental implants. Interestingly, when periodontal diseases are present (ie, periodontitis), the deleterious effects are more prominent, regarding the loss of bone in the oral cavity. It could be concluded that the deleterious impact of cannabis smoke on oral bone destruction may represent a new concern for oral health; nevertheless, more studies are mandatory to confirm such hypothesis.
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