[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100652831":3},{"organization":4,"armGroups":7,"interventions":24,"overallOfficials":39,"centralContacts":43,"locations":49,"responsibleParty":68,"collaborators":30,"id":71,"slug":72,"hasResults":73,"nctId":74,"briefTitle":75,"officialTitle":76,"acronym":30,"eligibilityCriteria":77,"healthyVolunteers":73,"sex":78,"minAge":79,"maxAge":80,"enrollmentInfo":81,"targetDuration":30,"studyType":84,"phases":85,"briefSummary":87,"conditions":88,"keywords":92,"overallStatus":52,"whyStopped":30,"lastUpdateSubmitDate":98,"lastUpdatePostDateStruct":99,"startDateStruct":102,"completionDateStruct":104,"leadSponsor":106,"locationsCount":107},{"fullName":5,"class":6},"Mansoura University","OTHER",[8,14,19],{"label":9,"type":10,"description":11,"interventionNames":12},"Group I: IO-Connect","ACTIVE_COMPARATOR","Patients received complete-arch implant-supported frameworks fabricated using digital impressions obtained with IO-Connect non-calibrated splinted scan bodies.",[13],"Procedure: IO-Connect Digital Impression",{"label":15,"type":10,"description":16,"interventionNames":17},"Group II: Reverse Scan Body","Patients received complete-arch implant-supported frameworks fabricated using digital impressions obtained with the Reverse Scan Body (RSB) technique.",[18],"Procedure: Reverse Scan Body Digital Impression",{"label":20,"type":10,"description":21,"interventionNames":22},"Group III: Conventional Impression","Patients received complete-arch implant-supported frameworks fabricated using a conventional splinted open-tray impression technique.",[23],"Procedure: Conventional Splinted Impression",[25,31,35],{"type":26,"name":27,"description":28,"armGroupLabels":29,"otherNames":30},"PROCEDURE","IO-Connect Digital Impression","Digital impression of the mandibular arch obtained using IO-Connect non-calibrated splinted scan bodies to fabricate the implant-supported framework for Group I.",[9],null,{"type":26,"name":32,"description":33,"armGroupLabels":34,"otherNames":30},"Reverse Scan Body Digital Impression","Digital impression obtained using the Reverse Scan Body (RSB) technique, involving extraoral scanning of scan bodies and superimposition with intraoral tissue scans, to fabricate the implant-supported framework for Group II.",[15],{"type":26,"name":36,"description":37,"armGroupLabels":38,"otherNames":30},"Conventional Splinted Impression","Conventional splinted open-tray impression using polyvinyl siloxane material and Type IV dental stone to fabricate the implant-supported framework for Group III.",[20],[40],{"name":41,"affiliation":5,"role":42},"Fatma A El-Waseef, PhD","STUDY_CHAIR",[44],{"name":45,"role":46,"phone":47,"phoneExt":30,"email":48},"Ahmed H Hazem Elsayed Helmi Atwa, BDS","CONTACT","+20 1092758696","ahmedhazem@mans.edu.eg",[50],{"facility":51,"status":52,"city":53,"state":54,"zip":30,"country":55,"countryCode":56,"cosmosGeoPoint":57,"geoPoint":62,"contacts":63},"Faculty of Dentistry, Mansoura University","RECRUITING","Al Mansurah","Dakahlia Governorate","Egypt","EG",{"type":58,"coordinates":59},"Point",[60,61],31.38069,31.03637,{"lat":61,"lon":60},[64,65],{"name":45,"role":46,"phone":47,"phoneExt":30,"email":48},{"name":66,"role":67,"phone":30,"phoneExt":30,"email":30},"Ahmed Hazem Elsayed Helmi Atwa, BDS","PRINCIPAL_INVESTIGATOR",{"type":67,"investigatorFullName":69,"investigatorTitle":70,"investigatorAffiliation":5,"oldNameTitle":30,"oldOrganization":30},"Ahmed Hazem Elsayed Helmi","Clinical Demonstrator, Department of Removable Prosthodontics, Faculty of Dentistry, Mansoura University","100652831","passive-fit-of-implant-supported-frameworks-digital-vs-conventional-impressions-100652831",false,"NCT07778199","Passive Fit of Implant-Supported Frameworks: Digital vs Conventional Impressions","Passive Fit Evaluation of Full-Arch Implant-supported Frameworks Using Digital and Conventional Impression Techniques: Crossover Study","Inclusion Criteria:\n\n* Completely edentulous patients requiring full-arch implant-supported fixed prosthesis\n* Age 35-70 years\n* Adequate mandibular bone to place at least four implants without major grafting\n* Ability to undergo digital scanning and radiographic evaluation\n* Signed informed consent\n\nExclusion Criteria:\n\n* Systemic conditions affecting healing (uncontrolled diabetes, immunosuppression)\n* History of head\u002Fneck radiotherapy or bisphosphonate therapy\n* Active oral infection or severe bruxism\n* Strong gag reflex preventing accurate scanning\n* Poor compliance or unwillingness to attend follow-up visits","ALL","35 Years","70 Years",{"count":82,"type":83},8,"ESTIMATED","INTERVENTIONAL",[86],"NA","This randomized crossover clinical trial compares the passivity of fit of complete-arch mandibular implant-supported frameworks fabricated using three impression techniques: a non-calibrated splinted digital scan body system (IO-Connect), a Reverse Scan Body (RSB) digital impression technique, and a conventional splinted open-tray impression technique. Eight completely edentulous patients each receiving four mandibular implants will be included. Passivity of fit will be evaluated clinically using the Sheffield one-screw test and radiographically using intraoral periapical radiographs obtained with the parallel technique.",[89,90,91],"Dental Implants","Edentulous Jaw","Passive Fit",[93,94,95,96,97],"Passive fit","Implant-supported framework","Digital impression","Full-arch implant prosthesis","Crossover study","2026-08-20",{"date":100,"type":101},"2026-08-21","ACTUAL",{"date":103,"type":101},"2026-01-25",{"date":105,"type":83},"2027-01-25",{"name":5,"class":6},1]