[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100608996":3},{"organization":4,"armGroups":7,"interventions":24,"overallOfficials":37,"centralContacts":42,"locations":47,"responsibleParty":63,"collaborators":30,"id":66,"slug":67,"hasResults":68,"nctId":69,"briefTitle":70,"officialTitle":71,"acronym":30,"eligibilityCriteria":72,"healthyVolunteers":73,"sex":74,"minAge":75,"maxAge":30,"enrollmentInfo":76,"targetDuration":30,"studyType":79,"phases":80,"briefSummary":82,"conditions":83,"keywords":85,"overallStatus":49,"whyStopped":30,"lastUpdateSubmitDate":90,"lastUpdatePostDateStruct":91,"startDateStruct":94,"completionDateStruct":96,"leadSponsor":98,"locationsCount":99},{"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,"countryCode":54,"cosmosGeoPoint":55,"geoPoint":60,"contacts":61},"RECRUITING","Al Mansurah","Dakahlia Governorate","35516","Egypt","EG",{"type":56,"coordinates":57},"Point",[58,59],31.38069,31.03637,{"lat":59,"lon":58},[62],{"name":39,"role":44,"phone":45,"phoneExt":30,"email":46},{"type":41,"investigatorFullName":64,"investigatorTitle":65,"investigatorAffiliation":5,"oldNameTitle":30,"oldOrganization":30},"Shimaa Ebrahim Abo Elenin Ebrahim","Clinical demonstrator at prosthodontics department","100608996","3d-printed-implant-overdentures-comparing-impression-techniques-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":77,"type":78},16,"ESTIMATED","INTERVENTIONAL",[81],"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",[84],"Edentulism",[86,87,88,89],"3D-Printed Implant Overdenture","Impression Techniques","Chewing Efficiency","Patient Satisfaction","2026-01-27",{"date":92,"type":93},"2026-01-29","ACTUAL",{"date":95,"type":93},"2026-01-06",{"date":97,"type":78},"2027-05-31",{"name":5,"class":6},1]