[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100554730":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":34,"centralContacts":34,"locations":35,"responsibleParty":58,"collaborators":34,"id":61,"slug":62,"hasResults":63,"nctId":64,"briefTitle":65,"officialTitle":66,"acronym":34,"eligibilityCriteria":67,"healthyVolunteers":68,"sex":69,"minAge":70,"maxAge":34,"enrollmentInfo":71,"targetDuration":34,"studyType":74,"phases":75,"briefSummary":77,"conditions":78,"keywords":34,"overallStatus":38,"whyStopped":34,"lastUpdateSubmitDate":80,"lastUpdatePostDateStruct":81,"startDateStruct":84,"completionDateStruct":86,"leadSponsor":88,"locationsCount":89},{"fullName":5,"class":6},"Cairo University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"The intervention group","EXPERIMENTAL","Use bonded retainer combined with vacuum formed retainer",[13],"Procedure: combined protocol of retention (bonded lingual retainer and vacuum formed retainers)",{"label":15,"type":16,"description":17,"interventionNames":18},"The comparator group","ACTIVE_COMPARATOR","Use bonded retainer",[19],"Procedure: Bonded lingual retainer",[21,28],{"type":22,"name":23,"description":24,"armGroupLabels":25,"otherNames":26},"PROCEDURE","combined protocol of retention (bonded lingual retainer and vacuum formed retainers)","Combined bonded retainer and vacuum formed retainer",[9],[27],"Fixed lingual retainer and vacuum formed retainer",{"type":22,"name":29,"description":30,"armGroupLabels":31,"otherNames":32},"Bonded lingual retainer","Bonded retainer",[15],[33],"Fixed lingual retainer",null,[36],{"facility":37,"status":38,"city":39,"state":34,"zip":40,"country":41,"countryCode":42,"cosmosGeoPoint":43,"geoPoint":48,"contacts":49},"Faculty of oral and dental medicine, Cairo university","RECRUITING","Cairo","11553","Egypt","EG",{"type":44,"coordinates":45},"Point",[46,47],31.24967,30.06263,{"lat":47,"lon":46},[50,55],{"name":51,"role":52,"phone":53,"phoneExt":34,"email":54},"Orthodontic Department","CONTACT","0020223638755","ortho@dentistry.cu.edu.eg",{"name":56,"role":57,"phone":34,"phoneExt":34,"email":34},"Abdelaziz Taha Malek","PRINCIPAL_INVESTIGATOR",{"type":57,"investigatorFullName":59,"investigatorTitle":60,"investigatorAffiliation":5,"oldNameTitle":34,"oldOrganization":34},"Abdelaziz Taha Abdelaziz Malek","Dentist","100554730","evaluation-of-the-stability-of-orthodontic-treatment-after-first-premolar-extraction-using-combined-retention-protocol-100554730",false,"NCT06502886","Evaluation of The Stability of Orthodontic Treatment After First Premolar Extraction Using Combined Retention Protocol","Evaluation of The Stability of Orthodontic Treatment After First Premolar Extraction in Adult Patients Using Bonded Retainer Versus Bonded Retainer Combined With Vacuum Formed Retainer : A Randomized Clinical Trial","Inclusion Criteria:\n\n1. Adult patients at the end of comprehensive orthodontic treatment after extraction of upper and lower first premolars and requiring subsequent application of a lingual and palatal bonded retainers\n2. Good oral hygiene\n3. Patients whom the pre-treatment records (models) are available\n4. Good finishing criteria (ABO grading system)\n\nExclusion Criteria:\n\n1. Non-extraction orthodontic treatment\n2. Poor oral hygiene\n3. Dental\u002Fcongenital anomalies ex: Missing laterals, transposed canines, Cleft lip and palate\u002Fcraniofacial syndromes\n4. Poor finishing criteria (ABO grading system)",true,"ALL","18 Years",{"count":72,"type":73},24,"ESTIMATED","INTERVENTIONAL",[76],"NA","The aim of this study is to compare between the stability of anterior and posterior segments in both arches using bonded lingual retainers versus a combined protocol of retention (bonded lingual retainer and vacuum formed retainers). The effect of different treatment changes achieved on the post-treatment stability will be studied in both groups.\n\nHypothesis: No difference between BR and BR+VFR regarding the stability of anterior segment alignment and posterior segment alignment and interdigitation",[79],"Orthodontic Appliance Complication","2024-07-09",{"date":82,"type":83},"2024-07-16","ACTUAL",{"date":85,"type":83},"2024-03-10",{"date":87,"type":73},"2025-03-01",{"name":5,"class":6},1]