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Abstract
Background Osteoporosis and periodontitis are frequent disorders that affect aging populations. It has been hypothesized that both conditions may be related.
Objective To determine whether dental osteoporosis is a local manifestation of systemic bone loss having similar etiology and risk factors, or whether it is an independent process depending primarily on factors that cause periodontitis.
Methods A systematic review of clinical trials assessing the relationship between osteoporosis and periodontitis was carried out. An electronic search was made based on Internet search engines, MEDLINE (from 1966 to December 2009) and the Cochrane Controlled Clinical Trials Register.
Results A total of 145 studies dealing with the relationship osteoporosis–periodontitis were identified. Of them, 35 were considered suitable for selection. Studies on maxillary and/or mandible radiological findings have a positive correlation in the majority of the cases (18 positive vs. three negative), whereas the findings on clinical periodontal examination are inconclusive (six positive vs. five negative). There were ten studies in which a diagnosis of osteoporosis was made, based on the existence of non-traumatic fracture, while there were nine studies using radiographs for diagnosis, of which six studies were found to have a positive correlation. There was only one study based on a clinical periodontal examination that found a positive correlation.
Conclusions The majority of the studies suggested a relationship between osteoporosis and periodontitis. Further well-controlled studies are needed to better elucidate the inter-relationship between systemic and oral bone loss and to clarify whether dentists could usefully give an early warning for osteoporosis risk.