RESUMEN
Los bifosfonatos fueron sintetizados en el siglo XIX por químicos alemanes, los cuales buscaban prevenir el depósito industrial de carbonato de calcio en sus chimeneas. Más tarde se observó la gran afinidad de la droga con el tejido óseo y que además inhibía la conversión de fosfato de calcio amorfo a hidroxiapatita (HA), lo cual reducía la velocidad de disolución de los cristales óseos. Por lo antedicho, estos compuestos sintéticos son utilizados hace más de tres décadas para el tratamiento de desórdenes esqueletales: osteoporosis, enfermedad de Paget, hipercalcemia asociada a mieloma múltiple y metástasis óseas propias de cáncer de próstata y mama, osteogénesis imperfecta y displasia fibrosa. Recientemente se han descripto algunos casos de osteonecrosis maxilar a causa de tratamiento crónico con bifosfonatos, a altas dosis en la prescripción de dichas drogas utilizadas como terapéutica oncológica.
Biphosphonates, synthesized in the mid 19th century by German chemists, were initially used in industry due to their capacity to prevent the deposits of calcium carbonate, which made them especially useful in avoiding the deposit of calcium salt in pipes. Later it was shown that they had great affinity with osseous tissue, where they inhibitedthe conversion of amorphous calcium phosphate in hydroxyapatite and they reduced the dissolution speed o the later. Biphosphonates are synthetics compounds used in the treatment of various metabolic and malignant bone diseases: Osteoporosis, Paget Disease, Hypercalcemia, Multiple Mieloma, Metastatic breast cancer and Metastatic prostate cancer, Osteogenesis Imperfecta, Fibrous Dysplasia. Recently, have been described some cases of Osteonecrosis of the jaw because of biphosphonate treatment in high doses for oncology administration.
Asunto(s)
Humanos , Femenino , Anciano , Difosfonatos/efectos adversos , Enfermedades Maxilares/inducido químicamente , Osteonecrosis/inducido químicamente , Osteonecrosis/terapia , Difosfonatos/uso terapéutico , Hipercalcemia , Neoplasias de los Genitales Femeninos/tratamiento farmacológicoRESUMEN
Osteonecrosis of the jaw associated to biphosphonate use is more common in cancer patients with bone metastases, that are using intravenous diphosphonates. When these drugs are used orally the risk of the complication is lower. We report 3 diabetic women aged 69, 76 and 82 years, receiving alendronate 70 mg every one week. The unveiling event was the extraction of several teeth without the use of antibiotics. All had bone pain, purulent discharge, loss of bone and halitosis. All improved five months after discontinuing alendronate.