Title
Best Treatment Choice for Osteonecrosis of the Jaw
A Multicenter Randomized Controlled Open-label Trial of Conservative Management Versus Minimally Invasive Treatment With Leukocyte- and Platelet-rich Fibrin Versus Primary Surgery in Patients With Newly Diagnosed Osteonecrosis of the Jaw
Phase
Phase 4Lead Sponsor
University of AntwerpStudy Type
InterventionalStatus
RecruitingIndication/Condition
Medication Related Osteonecrosis of the JawIntervention/Treatment
Chlorhexidine mouthwash ...Study Participants
125BETCON is a pragmatic randomized controlled open-label multi-center study in patients with newly diagnosed stage I-II MRONJ designed to answer the question whether minimally invasive management with LPRF membranes or primary surgical treatment is better than the standard of care of conservative therapy alone. The primary end-point is the time to mucosal healing. Secondary end-points consist of supporting measures of efficacy, patient reported symptoms, quality of life, well-being, and functioning.
While effective for symptom control and well tolerated, conservative treatment of MRONJ yields highly variable mucosal healing rates ranging between 20 to 50%. In an effort to improve these suboptimal outcomes, many adjunct treatment modalities have been studied, of which the use of minimally invasive surgery with autologous platelet rich plasma (LPRF) to improve wound healing has attracted considerable attention, with reported mucosal closure rates of up to 86% in single arm case series. More recently, improved understanding of the need for pre-operative infection control and adaptation of surgical protocols has renewed the interest in the primary surgical treatment of MRONJ with mucosal closure achieved in up to 90% of patients in some case series.
Therapeutic studies of MRONJ have almost exclusively focused on mucosal healing as the desired end-point of MRONJ treatment, with little or no attention to patient symptoms, quality of life, functioning and well-being during treatment, even though the resolution of MRONJ symptoms and limiting treatment related adverse events may be equally important to patients.
This comparative effectiveness research (CER) study is a randomized controlled open-label multi-center study in patients with newly diagnosed stage I-II MRONJ and is designed to answer the question whether minimally invasive treatment with LPRF membranes or primary surgical treatment improves outcomes when added to the standard of care of conservative treatment alone. The study also incorporates pragmatic design elements and uses patient reported outcomes (PRO) to determine which treatment offers the best humanistic outcomes considering both efficacy and measures of quality of life, functioning, well-being and symptom control. Indeed, this study will not use an investigational new drug (or drug regimen), device, or surgical technique, but rather evaluate their relative efficacy to guide future clinical management. Finally, plasma and saliva will be collected to identify prognostic and predictive biomarkers of outcome.
Antibiotic treatment is the same in all groups. Monotherapy for 4 weeks with: No penicillin contra-indication Amoxicillin-clavulanate 875mg tid PO Penicillin contra-indication or intolerance Clindamycin 300mg tid PO After 4 weeks patients will be switched to consolidation antibiotics: No penicillin contra-indication Amoxicillin 1g bid PO Penicillin contra-indication or intolerance Clindamycin 300mg tid PO Antibiotic treatment can be discontinued after 4 weeks when the MRONJ lesions has healed.
Patients in all treatment groups will be prescribed aqueous chlorhexidine 0.12% tid rinse for 2 weeks, with subsequent switch to 0.05% for the duration of the study or until healing of the MRONJ lesion has occurred.
Minimally-invasive surgical treatment, including sequestrectomy, debridement of soft tissue, and application of LPRF membranes before tension-free wound closure is obtained. Marginal resection of all necrotic bone is not part of this treatment strategy.
Primary surgical management consisting of the removal of the necrotic bone without excessive resection of healthy bone. Buccal mucoperiosteal flaps will be used to achieve a tension-free mucosal coverage.
Amoxicillin-based antibiotics and chlorhexidine oral rinse. Minor debridement. Primary wound closure is not part of this treatment strategy.
Amoxicillin-based antibiotics and chlorhexidine oral rinse. Minimally-invasive surgical treatment, including sequestrectomy, debridement of soft tissue, and application of LPRF membranes before tension-free wound closure is obtained. Marginal resection of all necrotic bone is not part of this treatment strategy.
Amoxicillin-based antibiotics and chlorhexidine oral rinse. Removal of the necrotic bone without excessive resection of healthy bone. Buccal mucoperiosteal flaps will be used to achieve a tension-free mucosal coverage.
Inclusion criteria: >18 years of age Provision of signed informed consent A history of at least one administration of, or an ongoing treatment with, a bone modifying agent in dose registered for the prevention of skeletal related events in bone metastatic disease or multiple myeloma Diagnosis of stage I-II MRONJ according to AAOMS 2014 criteria not more than 8 weeks prior to the date of screening Exclusion criteria: Any prior treatment for MRONJ other than local antiseptic rinses, systemic antibiotics, or analgesics Prior radiotherapy to the head and neck region Medical contraindication to receive any of the possible study treatments Stage III MRONJ characterized by very extensive bone necrosis, pathological fracture, or fistulas to the skin or sinuses Multiple MRONJ lesions that cannot be closed in a single surgical procedure
