Medication-Related Osteonecrosis of the Jaws: Two Center Retrospective Cohort Studies

• Published in: BioMed research international Vol. 2019; no. 2019; pp. 1 - 10
• Main Authors: Stefanovic, Aleksandar, Kuzmanovic, Cedomir, Nikolic, Danilo, Konstantinovic, Vitomir, Jezdic, Zoran, Mudrak, Joerg, Sabani, Melvil, Lukic, Nikola, Antunovic, Marija, Antic, Svetlana, Jelovac, Drago B., Petrovic, Milan, Pucar, Ana
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Publishing Corporation 01.01.2019; Hindawi; John Wiley & Sons, Inc; Hindawi Limited
• Subjects: Adult; Aged; Aged, 80 and over; Analysis; Biocompatibility; Biopsy; Bisphosphonate-Associated Osteonecrosis of the Jaw - etiology; Bisphosphonate-Associated Osteonecrosis of the Jaw - physiopathology; Bone Density Conservation Agents - adverse effects; Bone Neoplasms - physiopathology; Breast cancer; Cancer; Cancer therapies; Chemotherapy; Cohort analysis; Demographic variables; Demographics; Development and progression; Diphosphonates - adverse effects; Disease; Drug delivery systems; Drugs; Female; Females; Gender; Humans; Male; Males; Mandible; Maxilla; Medical imaging; Medical research; Medical treatment; Medicine, Experimental; Metastases; Middle Aged; Osteonecrosis; Osteoporosis; Osteoporosis - physiopathology; Patients; Radiation therapy; Radiography, Panoramic - adverse effects; Retrospective Studies; Risk Factors; Surgery; Systematic review; Teeth; Tooth Extraction - adverse effects; Trauma; Zoledronic acid; Serbia; Serbia & Montenegro
• ISSN: 2314-6133; 2314-6141
• DOI: 10.1155/2019/8345309

This retrospective cohort study aims to describe characteristics of patients with MRONJ, to identify factors associated with MRONJ development, and to examine variables associated with favourable outcome. Totally 32 patients were followed and observed: 21 females and 11 males, in the age range 35-84 in the period from 2009 to 2018. Clinical, radiological examination (Orthopantomograph and CBCT) and biopsy were performed in order to achieve diagnosis. Demographic and clinical variables were taken into consideration: sex, age, primary disease, medication type, mode of delivery, anatomic location, drug treatment duration, timing of tooth extraction, chemotherapy, presence of bone metastasis, aetiology of MRONJ, disease stage, and treatment modality. MRONJ developed under osteoporosis and malignant disease in 11 and 21 patients, respectively. MRONJ development was triggered by tooth extraction or trauma in 30 out of 32 cases, whereas the two patients developed MRONJ spontaneously. Stages I, II, and III were confirmed in 5 (16%), 18 (58%), and 9 (28%) patients, respectively. Mandible was affected in 23 (72%) patients. MRONJ was treated in our department by conservative and surgical modality. In this study we found that 65% of all patients were classified in the cured/improvement group and 35% in the stable/progression group. The female gender, osteoporosis as primary disease, oral regime intake, shorter period on BPs, earlier stage of disease, and specific anatomic localisation (frontal and premolar maxilla) were factors associated with better response to therapy and favourable clinical outcome. Comprehensive treatment protocol and further randomized studies are necessary for further improvements.