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ANNALS OF ONCOLOGY
卷 20, 期 1, 页码 137-145出版社
OXFORD UNIV PRESS
DOI: 10.1093/annonc/mdn526
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Background: Screening of the oral cavity and dental care was suggested as mandatory preventive measures of osteonecrosis of the jaw (ONJ) in patients receiving bisphosphonates (BPs). We investigated the occurrence of ONJ before and after implementation of dental preventive measures when starting BP therapy. Patients and methods: Since April 2005, 154 consecutive patients treated with BPs (POST-Group) have undergone a baseline mouth assessment (dental visit +/- orthopantomography of the jaws) to detect potential dental conditions and dental care if required. A retrospective review was also conducted of all consecutive cancer patients with bone metastases (PRE-Group) and treated for the first time with BPs from January 1999 to April 2005 in our clinic without receiving any preventive measure. Incidence proportion and incidence rate (IR) were used to estimate the incidence of ONJ. Results: Among the study population (966 patients; male/female = 179/787), 73% had breast cancer. 25% of patients were given zoledronic acid (ZOL), 62% pamidronate (PAM), 8% PAM followed by ZOL and 5% clodronate. ONJ was observed in 28 patients (2.9%); we observed a reduction in the incidence of ONJ from 3.2% to 1.3%, when comparing-025EFpre and post-implementation of preventive measures programme. Considering the patients exposed to ZOL, the performance of a dental examination and the application of preventive measures led to a sustained reduction in ONJ IR (7.8% in the PRE-Group versus 1.7% in the POST-Group; P = 0.016), with an IR ratio of 0.30 (95% confidence interval 0.03-1.26). Conclusions: ONJ is a manageable and preventable condition. Our data confirm that the application of preventive measures can significantly reduce the incidence of ONJ in cancer patients receiving BPs therapy. Dental exams combined to the identification of patients at risk in cooperation with the Dental Team can improve outcomes and increase the number of ONJ-free patients.
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