[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100608996":3},{"organization":4,"armGroups":7,"interventions":24,"overallOfficials":37,"centralContacts":42,"locations":47,"responsibleParty":62,"collaborators":30,"id":65,"slug":30,"hasResults":66,"nctId":67,"briefTitle":68,"officialTitle":69,"acronym":30,"eligibilityCriteria":70,"healthyVolunteers":71,"sex":72,"minAge":73,"maxAge":30,"enrollmentInfo":74,"targetDuration":30,"studyType":77,"phases":78,"briefSummary":80,"conditions":81,"keywords":83,"overallStatus":49,"whyStopped":30,"lastUpdateSubmitDate":88,"lastUpdatePostDateStruct":89,"startDateStruct":92,"completionDateStruct":94,"leadSponsor":96,"locationsCount":97},{"fullName":5,"class":6},"Mansoura University","OTHER",[8,14,19],{"label":9,"type":10,"description":11,"interventionNames":12},"conventional open -tray impression","EXPERIMENTAL","Mandibular implant overdenture fabricated using the conventional open tray impression technique at the implant level.",[13],"Procedure: Conventional open -tray impression",{"label":15,"type":10,"description":16,"interventionNames":17},"Functionally generated reline impression","Mandibular implant overdenture fabricated using functionally generated reline impression technique.",[18],"Procedure: Functionally generated reline impression",{"label":20,"type":10,"description":21,"interventionNames":22},"Mucostatic base with functional borders impression","Mandibular implant overdenture fabricated using mucostatic base and functional borders impression technique.",[23],"Procedure: Mucostatic base with functional borders impression",[25,31,34],{"type":26,"name":27,"description":28,"armGroupLabels":29,"otherNames":30},"PROCEDURE","Conventional open -tray impression","Primary impression with irreversible hydrocolloid, custom tray with open window, and final impression with silicone material around impression copings to fabricate a 3D-printed implant overdenture",[9],null,{"type":26,"name":15,"description":32,"armGroupLabels":33,"otherNames":30},"Interim prosthesis relieved and reline impression taken during centric closure with border molding, scanned to construct a 3D-printed implant overdenture",[15],{"type":26,"name":20,"description":35,"armGroupLabels":36,"otherNames":30},"Intraoral scan of edentulous arch, 3D-printed baseplates for occlusion rim, functional border molding, and digital workflow to fabricate 3D-printed implant overdenture",[20],[38],{"name":39,"affiliation":40,"role":41},"Shimaa E Aboelenin","Faculty of Dentistry, Mansoura University","PRINCIPAL_INVESTIGATOR",[43],{"name":39,"role":44,"phone":45,"phoneExt":30,"email":46},"CONTACT","01113786860","shimaaaboelenin@mans.edu.eg",[48],{"facility":40,"status":49,"city":50,"state":51,"zip":52,"country":53,"cosmosGeoPoint":54,"geoPoint":59,"contacts":60},"RECRUITING","Al Mansurah","Dakahlia Governorate","35516","Egypt",{"type":55,"coordinates":56},"Point",[57,58],31.38069,31.03637,{"lat":58,"lon":57},[61],{"name":39,"role":44,"phone":45,"phoneExt":30,"email":46},{"type":41,"investigatorFullName":63,"investigatorTitle":64,"investigatorAffiliation":5,"oldNameTitle":30,"oldOrganization":30},"Shimaa Ebrahim Abo Elenin Ebrahim","Clinical demonstrator at prosthodontics department","100608996",false,"NCT07208812","3D-Printed Implant Overdentures: Comparing Impression Techniques","Impact of Impression Techniques on Patient Satisfaction and Chewing Efficiency in 3D-Printed Implant Overdentures: A Crossover Study","Inclusion Criteria:\n\n* Healthy patients, free from systemic diseases that affect bone resorption (e.g., uncontrolled diabetes, osteoporosis)\n* Residual alveolar ridges covered with healthy, firm mucosa\n* Adequate mandibular bone length and width to accommodate standard implant sizes.\n* Angle's Class I maxillo-mandibular relationship.\n\nExclusion Criteria:\n\n* Absolute contraindications to implant placement (e.g., active cancer, immune system diseases)\n* History of head and neck irradiation or chemotherapy within the past 3 years\n* Metabolic bone diseases such as uncontrolled diabetes, osteoporosis, or hyperparathyroidism\n* Parafunctional habits such as bruxism or clenching\n* Smoking or alcoholism\n* Any physical or medical condition that may interfere with study follow-up or implant success",true,"ALL","45 Years",{"count":75,"type":76},16,"ESTIMATED","INTERVENTIONAL",[79],"NA","This randomized crossover clinical trial aims to compare three different impression techniques for the construction of 3d-printed mandibular implant overdentures in completely edentulous patients. Sixteen patients will receive two mandibular implants and three overdentures fabricated using:(1) conventional open-tray implant level impression (2) functionally generated reline impression, and (3)mucostatic base with functional borders impression. Each overdenture will be worn for three months with a washout period between interventions.\n\nThe primary outcome is masticatory efficiency, assessed using a color -mixing ability test at 3,6, and9 months.\n\nSecondary outcome is patient satisfaction, assessed using a Visual Analog Scale (VAS) at the same intervals. the study hypothesis is that the impression technique influences both chewing efficiency and patient satisfaction",[82],"Edentulism",[84,85,86,87],"3D-Printed Implant Overdenture","Impression Techniques","Chewing Efficiency","Patient Satisfaction","2026-01-27",{"date":90,"type":91},"2026-01-29","ACTUAL",{"date":93,"type":91},"2026-01-06",{"date":95,"type":76},"2027-05-31",{"name":5,"class":6},1]