[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100521168":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":31,"centralContacts":36,"locations":46,"responsibleParty":67,"collaborators":26,"id":71,"slug":72,"hasResults":73,"nctId":74,"briefTitle":75,"officialTitle":76,"acronym":26,"eligibilityCriteria":77,"healthyVolunteers":73,"sex":78,"minAge":79,"maxAge":26,"enrollmentInfo":80,"targetDuration":26,"studyType":83,"phases":84,"briefSummary":86,"conditions":87,"keywords":89,"overallStatus":49,"whyStopped":26,"lastUpdateSubmitDate":91,"lastUpdatePostDateStruct":92,"startDateStruct":95,"completionDateStruct":97,"leadSponsor":99,"locationsCount":100},{"fullName":5,"class":6},"Qassim University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Hinge Flap group","EXPERIMENTAL","Patients who will be included in this study will be treated by using hinge flap and buccal advancement flap to close their oroantral fistula. A circular incision will be performed at the oral side of the oroantral fistula. The tissues will be reflected and sutured by purse sutures. Then the tissues will be pushed up to close sinus membrane. A pyramidal flap will be reflected at the buccal tissues, then horizontal incisions will be performed at the base of the flap to allow advancement of the flap over the fistula and a tension-free suturing to the palatal tissues.",[13],"Procedure: A hinge flap will be performed to reinforce the buccal advancement flap to close the oroantral fistula at the most posterior area of the maxilla",{"label":15,"type":16,"description":17,"interventionNames":18},"Palatal Flap group","ACTIVE_COMPARATOR","Patients who will be included in this study will be treated by using he anteriorly based palatal rotational flap to close the oroantral fistula. Two paralleling incisions will be performed on the palatal side of the fistula. The distance between the two incisions will be 2 to 3 mm greater than the width of the fistula. Then the two incisions will be connected together via a circular incision at the bony end of the hard palate. The flap reflection will be performed, and the greater palatine vessels will be legated and cauterized to allow lateral repositioning of the flap over the fistula. The flap will be sutured to the buccal tissues.",[19],"Procedure: An anteriorly based palatal flap will be performed to close the oroantral fistula at the most posterior area of the maxilla",[21,27],{"type":22,"name":23,"description":24,"armGroupLabels":25,"otherNames":26},"PROCEDURE","A hinge flap will be performed to reinforce the buccal advancement flap to close the oroantral fistula at the most posterior area of the maxilla","The hinge flap is raised via circular incision around the oral side of the oroantral fistula then sutured with purse suture to close the sinus membrane perforation and it is used as an additional layer that reinforce the buccal advancement flap",[9],null,{"type":22,"name":28,"description":29,"armGroupLabels":30,"otherNames":26},"An anteriorly based palatal flap will be performed to close the oroantral fistula at the most posterior area of the maxilla","Two paralleling incisions will be performed on the palatal side of the fistula. The distance between the two incisions will be 2 to 3 mm greater than the width of the fistula. Then the two incisions will be connected together via a circular incision at the bony end of the hard palate. The flap reflection will be performed, and the greater palatine vessels will be legated and cauterized to allow lateral repositioning of the flap over the fistula. The flap will be sutured to the buccal tissues.",[15],[32],{"name":33,"affiliation":34,"role":35},"Ghada A khalifa, Professor","Department of Maxillofacial Study and Diagnostic Sciences, College of Dentistry, Qassim University","STUDY_DIRECTOR",[37,42],{"name":38,"role":39,"phone":40,"phoneExt":26,"email":41},"Ghada A Khalifa, Professor","CONTACT","0096504840248","G.Khalifa@qudent.org",{"name":43,"role":39,"phone":44,"phoneExt":26,"email":45},"Suzan A Salem, Lecturer","00966531017409","s.salem@qu.edu.sa",[47],{"facility":48,"status":49,"city":50,"state":51,"zip":52,"country":53,"countryCode":54,"cosmosGeoPoint":55,"geoPoint":60,"contacts":61},"College of Dentistry, Qassim University","RECRUITING","Buraidah","Al-Qassim Region","1162","Saudi Arabia","SA",{"type":56,"coordinates":57},"Point",[58,59],43.97497,26.32599,{"lat":59,"lon":58},[62],{"name":63,"role":39,"phone":64,"phoneExt":65,"email":66},"Dean office","0555052922","+966","dean.office@qudent.org",{"type":68,"investigatorFullName":69,"investigatorTitle":70,"investigatorAffiliation":5,"oldNameTitle":26,"oldOrganization":26},"PRINCIPAL_INVESTIGATOR","Ghada Amin Khalifa, PhD","Professor of Oral and Maxillofacial Surgery","100521168","a-hinge-flap-to-reinforce-buccal-advancement-flap-100521168",false,"NCT06066086","A Hinge Flap to Reinforce Buccal Advancement Flap","A Hinge Flap as an Additional Layer to Reinforce the Buccal Advancement Flap for Treating Chronic Oroantral Fistulae (COAF) in the Most Posterior Aspect of the Maxilla\"","Inclusion Criteria:\n\n1. Chronic oroantral fistula at the most posterior area of the maxilla\n2. Ages above 18 years\n3. Patients who are medical free\n\nExclusion Criteria:\n\n1. Oroantral communications\n2. Absence of sinus infection\n3. Oroantral fistula which are resulted from tumor resections","ALL","18 Years",{"count":81,"type":82},40,"ESTIMATED","INTERVENTIONAL",[85],"NA","Background The chronic oroantral fistulas (COAF) is an epithelized communication that is formed between the squamous epithelium of the oral cavity and the pseudo-stratified columnar ciliated epithelium of the maxillary sinus with a high recurrent rate. The use of palatal flaps has been documented for treating such fistulae. The presence of the oroantral fistula at the area of second molars or maxillary tuberosity could complicate the use of the palatal rotational flap where the arch of its rotation is increased leading to compromised blood supply. The use of the buccal flap is not advocated because it is very thin.\n\nRationale Double or triple-layer closure is indicated to avoid recurrence of the COAF. Different layers have been documented to minimize the risk of recurrence and reinforce buccal flaps. The oral tissues at the oral side of the oroantral fistula could used as an additional layer with buccal advancement flap and buccal fat to omit the use of palatal flap with its subsequent problems in the most posterior aspect of the maxilla Study objectives Therefore, this study will be conducted to evaluate the use of hinge flaps to reinforce the buccal advancement flap for surgical closure of the COAF in the most posterior area of the maxilla\n\nMethods The hinge flap will be performed at the oral side of the COAF to close the perforation in the sinus membrane. The oral side of the COAF will be closed with buccal advancement flap. The success rate, recurrence, time of surgery, postoperative complications, will be evaluated.",[88],"Oroantral Fistula",[90],"Chronic Oroantral Fistula","2026-06-05",{"date":93,"type":94},"2026-06-09","ACTUAL",{"date":96,"type":94},"2023-04-01",{"date":98,"type":82},"2028-06-30",{"name":5,"class":6},1]