[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100658913":3},{"organization":4,"outcomesModule":7,"designInfo":26,"detailedDescription":35,"studyPopulation":25,"armGroups":36,"interventions":49,"overallOfficials":59,"centralContacts":69,"locations":77,"responsibleParty":113,"collaborators":25,"id":116,"slug":117,"hasResults":118,"nctId":119,"briefTitle":120,"officialTitle":121,"acronym":25,"eligibilityCriteria":122,"healthyVolunteers":118,"sex":123,"minAge":124,"maxAge":25,"enrollmentInfo":125,"targetDuration":25,"studyType":128,"phases":129,"briefSummary":131,"conditions":132,"keywords":134,"overallStatus":144,"whyStopped":25,"lastUpdateSubmitDate":145,"lastUpdatePostDateStruct":146,"startDateStruct":149,"completionDateStruct":151,"leadSponsor":153,"locationsCount":154},{"fullName":5,"class":6},"University of Manitoba","OTHER",{"primaryOutcomes":8,"secondaryOutcomes":13,"otherOutcomes":25},[9],{"measure":10,"description":11,"timeFrame":12},"Incidence of Osteoradionecrosis Within 6 Months","Osteoradionecrosis (ORN) will be assessed at the participant level using the ClinRad definition adopted by the ISOO-MASCC-ASCO guideline. ORN is defined as a radiographic lytic or mixed sclerotic lesion of bone, visibly exposed bone, and\u002For bone probeable through a periodontal pocket or fistula within an anatomical site previously exposed to therapeutic head and neck radiation. A participant will meet the primary endpoint if at least one study extraction socket meets the definition at any scheduled or unscheduled visit through 6 months.","From dental extraction through 6 months after extraction",[14,18,22],{"measure":15,"description":16,"timeFrame":17},"Complete Mucosal Closure of the Extraction Site","Complete mucosal closure will be assessed clinically at each study extraction socket and recorded as a binary outcome (yes\u002Fno). Complete mucosal closure is defined as intact epithelium across the entire socket orifice, with no dehiscence and no exposed bone. Socket-level outcomes will account for clustering of multiple extraction sockets within individual participants.","2 weeks, 6 weeks, 3 months, and 6 months after dental extraction",{"measure":19,"description":20,"timeFrame":21},"Radiographic Bone Healing at the Extraction Site","Radiographic bone healing at each study extraction site will be assessed by qualitative comparison of the 6-month cone-beam computed tomography (CBCT) scan with the pre-extraction baseline CBCT. Assessment will include the presence, absence, and extent of lytic or mixed sclerotic changes and cortical continuity at the socket crest.","Baseline to 6 months after dental extraction",{"measure":23,"description":24,"timeFrame":17},"Postoperative Pain Intensity","Pain intensity at each study extraction socket will be assessed using the 11-point Numeric Rating Scale (NRS-11), ranging from 0 to 10, where 0 represents no pain and 10 represents the worst pain imaginable. Participants will rate pain at each extraction site over the preceding 24 hours. Higher scores indicate greater pain intensity.",null,{"allocation":27,"interventionModel":28,"interventionModelDescription":25,"primaryPurpose":29,"observationalModel":25,"timePerspective":25,"maskingInfo":30},"RANDOMIZED","PARALLEL","PREVENTION",{"masking":31,"maskingDescription":25,"whoMasked":32},"DOUBLE",[33,34],"PARTICIPANT","OUTCOMES_ASSESSOR","This is a multicentre, randomized controlled trial evaluating platelet-rich fibrin (PRF) for the prevention of osteoradionecrosis (ORN) following dental extraction in adults who have previously received radiation therapy involving the jaws.\n\nEligible participants requiring extraction of one or more teeth within a previously irradiated field will be randomized in a 1:1 ratio to receive either PRF plus standard extraction care or standard extraction care alone.\n\nFor participants allocated to the intervention group, autologous PRF will be prepared chairside from venous blood using horizontal centrifugation and placed into the extraction socket(s) during the same procedure. The PRF will not be stored or transported.\n\nThe study will evaluate whether adjunctive PRF reduces the occurrence of ORN following dental extraction and will also evaluate clinical soft-tissue healing, radiographic bone healing, postoperative pain, analgesic use, postoperative complications, and adverse events.\n\nThe study will be conducted at participating centres in Winnipeg, Manitoba, and Calgary, Alberta, Canada.",[37,44],{"label":38,"type":39,"description":40,"interventionNames":41},"Platelet-Rich Fibrin (PRF) + Standard Care","EXPERIMENTAL","Participants randomized to this arm will undergo dental extraction with standard extraction care and adjunctive placement of autologous platelet-rich fibrin (PRF) into the extraction socket(s). PRF will be prepared chairside from the participant's venous blood using horizontal centrifugation and placed into the extraction socket(s) during the same procedure.",[42,43],"Procedure: Platelet-rich fibrin (PRF)","Procedure: Standard Dental Extraction Care",{"label":45,"type":46,"description":47,"interventionNames":48},"Standard Care Alone","ACTIVE_COMPARATOR","Participants randomized to this arm will undergo dental extraction with standard extraction care without placement of platelet-rich fibrin (PRF) into the extraction socket(s).",[43],[50,55],{"type":51,"name":52,"description":53,"armGroupLabels":54,"otherNames":25},"PROCEDURE","Platelet-rich fibrin (PRF)","Autologous platelet-rich fibrin (PRF) will be prepared chairside from venous blood collected from the participant. Blood will be processed using horizontal centrifugation to produce PRF. The prepared PRF will be placed into the eligible dental extraction socket(s) during the same procedure. PRF will not be stored or transported.",[38],{"type":51,"name":56,"description":57,"armGroupLabels":58,"otherNames":25},"Standard Dental Extraction Care","Participants will undergo extraction of one or more eligible teeth within a previously irradiated area of the jaw using standard dental extraction care. No platelet-rich fibrin (PRF) will be placed in the extraction socket(s) as part of this intervention.",[38,45],[60,63,66],{"name":61,"affiliation":5,"role":62},"Julia M Burgess, DMD (current OMFS Resident)","PRINCIPAL_INVESTIGATOR",{"name":64,"affiliation":5,"role":65},"Reda Elgazzar, Oral and Maxillofacial Surgeon","STUDY_DIRECTOR",{"name":67,"affiliation":68,"role":65},"Edmund Chan, DMD","University of Calgary",[70,74],{"name":61,"role":71,"phone":72,"phoneExt":25,"email":73},"CONTACT","6042206648","burges16@myumanitoba.ca",{"name":64,"role":71,"phone":75,"phoneExt":25,"email":76},"2047893634","Reda.Elgazzar@umanitoba.ca",[78,98],{"facility":79,"status":25,"city":80,"state":81,"zip":82,"country":83,"countryCode":84,"cosmosGeoPoint":85,"geoPoint":90,"contacts":91},"Arthur J.E. Child Comprehensive Cancer Centre Dental Clinic","Calgary","Alberta","T2N 5G2","Canada","CA",{"type":86,"coordinates":87},"Point",[88,89],-114.08529,51.05011,{"lat":89,"lon":88},[92,96],{"name":93,"role":71,"phone":94,"phoneExt":25,"email":95},"Dr. Edmund Chan, DMD","587-231-5676","edmund.chan@albertahealthservices.ca",{"name":97,"role":71,"phone":25,"phoneExt":25,"email":73},"Julia Burgess, DMD (Current OMFS Resident)",{"facility":99,"status":25,"city":100,"state":101,"zip":102,"country":83,"countryCode":84,"cosmosGeoPoint":103,"geoPoint":107,"contacts":108},"Health Sciences Centre Oral Surgery Clinic","Vancouver","British Columbia","V6T 1X4",{"type":86,"coordinates":104},[105,106],-123.11934,49.24966,{"lat":106,"lon":105},[109,111],{"name":97,"role":71,"phone":110,"phoneExt":25,"email":73},"204-787-3645",{"name":64,"role":71,"phone":112,"phoneExt":25,"email":76},"+12047893634",{"type":62,"investigatorFullName":114,"investigatorTitle":115,"investigatorAffiliation":5,"oldNameTitle":25,"oldOrganization":25},"Reda Elgazzar","Associate Professor","100658913","platelet-rich-fibrin-for-preventing-osteoradionecrosis-after-dental-extractions-100658913",false,"NCT07856875","Platelet-Rich Fibrin for Preventing Osteoradionecrosis After Dental Extractions","Multicentre Randomized Controlled Trial Evaluating Platelet-Rich Fibrin (PRF) for the Prevention of Osteoradionecrosis in Patients Requiring Dental Extractions After Radiation Therapy","Inclusion Criteria:\n\nAge 18 years or older. History of head and neck cancer treated with radiation therapy. Requires at least one dental extraction within an area of the jaw that was previously treated with radiation.\n\nWilling and able to attend all study follow-up visits. No minimum or maximum time since completion of radiation therapy is required.\n\nExclusion Criteria:\n\nAbscess or draining sinus tract associated with a planned study extraction site.\n\nBlood disorder affecting platelet production or function, such as thrombocytopenia, hemophilia, von Willebrand disease, or a qualitative platelet disorder.\n\nCurrent immunosuppressive therapy, including calcineurin inhibitors, antimetabolites, biologic therapy, or active cytotoxic chemotherapy.\n\nCurrent tobacco use in any form, including nicotine vaping, within the previous 30 days.\n\nKnown recurrence of head and neck cancer. Previous re-irradiation or re-irradiation currently planned. Chronic systemic corticosteroid use equivalent to at least 5 mg of prednisone daily for at least 30 consecutive days within the previous 3 months.\n\nCurrent or previous bisphosphonate therapy by any route. Denosumab within the previous 12 months or use of another antiresorptive or antiangiogenic medication.\n\nCurrent pregnancy. Therapeutic low-molecular-weight heparin or unfractionated heparin that cannot be scheduled at trough level.","ALL","18 Years",{"count":126,"type":127},112,"ESTIMATED","INTERVENTIONAL",[130],"NA","The goal of this clinical trial is to learn whether platelet-rich fibrin (PRF) can help prevent osteoradionecrosis (ORN) after dental extractions in adults who previously received radiation therapy to the head and neck. ORN is a condition in which jawbone damaged by radiation does not heal properly and may become exposed.\n\nThe main question this study aims to answer is:\n\nDoes placing PRF into dental extraction sites lower the chance of developing ORN within 6 months after extraction?\n\nPRF is made from a small sample of a participant's own blood. The blood is processed in a centrifuge to form PRF, which can then be placed into the tooth extraction site.\n\nResearchers will compare participants who receive PRF in addition to standard extraction care with participants who receive standard extraction care alone.\n\nParticipants will:\n\nHave one or more teeth removed from an area of the jaw that previously received radiation therapy.\n\nBe randomly assigned to receive either PRF plus standard care or standard care alone.\n\nReturn for follow-up visits at approximately 2 weeks, 6 weeks, 3 months, and 6 months after extraction.\n\nHave their healing, pain, any potential postoperative complications, and development of ORN assessed during follow-up.",[133],"Osteoradionecrosis of the Jaw",[135,136,137,138,139,140,141,142,143],"Osteoradionecrosis","ORN","Platelet-Rich Fibrin","PRF","Dental Extraction","Radiation Therapy","Head and Neck Radiation","Jaw","Post-Radiation Dental Extraction","NOT_YET_RECRUITING","2026-09-28",{"date":147,"type":148},"2026-10-05","ACTUAL",{"date":150,"type":127},"2027-01-01",{"date":152,"type":127},"2028-12-31",{"name":5,"class":6},2]