[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100600502":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":30,"centralContacts":38,"locations":44,"responsibleParty":57,"collaborators":25,"id":61,"slug":62,"hasResults":63,"nctId":64,"briefTitle":65,"officialTitle":66,"acronym":25,"eligibilityCriteria":67,"healthyVolunteers":63,"sex":68,"minAge":25,"maxAge":25,"enrollmentInfo":69,"targetDuration":25,"studyType":72,"phases":73,"briefSummary":75,"conditions":76,"keywords":78,"overallStatus":47,"whyStopped":25,"lastUpdateSubmitDate":83,"lastUpdatePostDateStruct":84,"startDateStruct":87,"completionDateStruct":89,"leadSponsor":91,"locationsCount":92},{"fullName":5,"class":6},"Al-Azhar University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"direct 3d printed retainer of .5mm","EXPERIMENTAL","group wearing direct 3d retainer of .5 mm",[13],"Device: retainer with .5 mm thickness",{"label":15,"type":10,"description":16,"interventionNames":17},"direct 3d printed retainer of 1mm","group wearing direct 3 d retainer with thickness 1 mm",[18],"Device: retainer with 1 mm thickness",[20,26],{"type":21,"name":22,"description":23,"armGroupLabels":24,"otherNames":25},"DEVICE","retainer with .5 mm thickness","direct 3d printed retainer with .5 mm thickness",[9],null,{"type":21,"name":27,"description":28,"armGroupLabels":29,"otherNames":25},"retainer with 1 mm thickness","direct 3d printed retainer with 1 mm thickness,",[15],[31,35],{"name":32,"affiliation":33,"role":34},"Dr. Mustafa Mohamed Mahmoud Dawaba Associate Professor of Orthodontics","Faculty of Dental Medicine, Al-Azhar University Assiut Branch","STUDY_CHAIR",{"name":36,"affiliation":37,"role":34},"Dr. Mahmoud Mohamed Salah El-din Ibrahim Lecturer of Orthodontics","Faculty of Dental Medicine , Al-Azhar University Assiut Branch",[39],{"name":40,"role":41,"phone":42,"phoneExt":25,"email":43},"Norhan Ibrahim Eldsokee Master's Candidate, B.D.S","CONTACT","+20 01559921144","noureldsokee@gmail.com",[45],{"facility":46,"status":47,"city":48,"state":25,"zip":25,"country":49,"countryCode":50,"cosmosGeoPoint":51,"geoPoint":56,"contacts":25},"Faculty of Dental Medicine , Al-Azhar University","RECRUITING","Asyut","Egypt","EG",{"type":52,"coordinates":53},"Point",[54,55],31.18368,27.18096,{"lat":55,"lon":54},{"type":58,"investigatorFullName":59,"investigatorTitle":60,"investigatorAffiliation":5,"oldNameTitle":25,"oldOrganization":25},"PRINCIPAL_INVESTIGATOR","Norhan Ibrahim Eldsokee Khidr","Principal Investigator, Master's Candidate at Orthodontic department at Al-Azhar University, Assiut branch.","100600502","biological-reaction-of-direct-3d-printed-retainers-100600502",false,"NCT07098325","Biological Reaction of Direct 3d Printed Retainers","Evaluation of Biological Reaction of Direct Three Dimensional Printed Retainers","Inclusion Criteria:\n\n* -Finished fixed orthodontic therapy and seeking for retention as a part of their original treatment plan.\n* Good oral hygiene.\n* No habits (e.g., smoking)\n\nExclusion Criteria:\n\n* Medication affecting saliva.\n\n  * intrinsic tooth discoloration.\n  * Uncooperative patients.\n  * Patient with periodontitis.\n  * Learning difficulties and inability to read written instructions.","ALL",{"count":70,"type":71},26,"ESTIMATED","INTERVENTIONAL",[74],"NA","The aim of this study will be to evaluate the biological reaction of direct three dimensional printed retainers.\n\nPrimary objective is to evaluate bacterial growth and color stability between different thicknesses of 3d printed material used as a retainer .\n\nSecondary objective is to determine the optimal thickness for use in clear aligner fabrication based on biological performance.",[77],"Orthodontic Retainers",[79,80,81,82],"Different thicknesses","Direct three dimensional printed retainers","Bacterial growth","Color change","2025-07-25",{"date":85,"type":86},"2025-08-01","ACTUAL",{"date":88,"type":71},"2025-10-01",{"date":90,"type":71},"2027-06-01",{"name":5,"class":6},1]