[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"dental-prosthesis-implant-supported\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:dental-prosthesis-implant-supported":26},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,2,0,[8,43],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":4,"eligibilityCriteria":15,"healthyVolunteers":11,"sex":16,"minAge":17,"maxAge":4,"enrollmentInfo":18,"targetDuration":4,"studyType":21,"phases":22,"briefSummary":24,"conditions":25,"keywords":27,"overallStatus":31,"whyStopped":4,"lastUpdateSubmitDate":32,"lastUpdatePostDateStruct":33,"startDateStruct":36,"completionDateStruct":38,"leadSponsor":40,"locationsCount":5},"100599928","additively-versus-subtractively-manufactured-implant-supported-fixed-dental-prostheses-100599928",false,"NCT07090863","Additively Versus Subtractively Manufactured Implant Supported Fixed Dental Prostheses","Additively (AM) Versus Subtractively (SM) Manufactured Implant Supported Fixed Dental Prostheses (iFDPs)","Inclusion Criteria:\n\n* Signed Informed Consent Form in English language\n* ≥ 20 years of age\n* In need of at least one definitive screw retained premolar or molar iFDP on an existing dental implant (Straumann AG)\n* Presence of at least one adjacent tooth at the implant site\n* Adequate oral hygiene\n* Capability to comply with the study procedures\n\nExclusion Criteria:\n\n* Pregnant or lactating women\n* Known or suspected non-compliance, drug or alcohol abuse\n* Severe periodontal and peri-implant disease","ALL","20 Years",{"count":19,"type":20},50,"ESTIMATED","INTERVENTIONAL",[23],"NA","This research is being done to evaluate the clinical, technical, biological, and aesthetic results of two different fabrication methods (additive and subtractive) for creating implant-supported fixed dental prostheses (iFDPs). Patients will receive an iFDP, meaning an implant-supported crown, according to regular treatment protocols. The fabrication method used to create the implant-supported crown will be decided in a randomised way. Clinical and radiological examinations will be performed prior to and when receiving the implant-supported crown and during a follow-up period of 3 years. Furthermore, technician- and patient-reported outcomes will be evaluated used questionnaires.",[26],"Dental Prosthesis, Implant-Supported",[28,29,30],"3D-printing","implant-supported prostheses","additive manufacturing","NOT_YET_RECRUITING","2025-07-31",{"date":34,"type":35},"2025-08-05","ACTUAL",{"date":37,"type":20},"2025-07-30",{"date":39,"type":20},"2029-07-20",{"name":41,"class":42},"Harvard Medical School (HMS and HSDM)","OTHER",{"id":44,"slug":45,"hasResults":11,"nctId":46,"briefTitle":47,"officialTitle":48,"acronym":49,"eligibilityCriteria":50,"healthyVolunteers":51,"sex":16,"minAge":52,"maxAge":53,"enrollmentInfo":54,"targetDuration":4,"studyType":21,"phases":56,"briefSummary":57,"conditions":58,"keywords":62,"overallStatus":72,"whyStopped":4,"lastUpdateSubmitDate":73,"lastUpdatePostDateStruct":74,"startDateStruct":76,"completionDateStruct":78,"leadSponsor":80,"locationsCount":82},"100597976","accuracy-of-standard-and-geometric-pattern-assisted-digital-scanning-for-full-arch-implant-prosthesis-frameworks-100597976","NCT07065487","Accuracy of Standard and Geometric Pattern-Assisted Digital Scanning for Full-Arch Implant Prosthesis Frameworks","Accuracy of Standard vs Geometric Pattern-Assisted Digital Scanning Techniques for Construction of Full Arch Implant Prosthesis Framework: A Crossover Study","GPA Scan","Inclusion Criteria:\n\nAdults aged 30 to 70 years\n\nCompletely edentulous mandible\n\nPresence of four osseointegrated implants in the lower jaw\n\nGood oral and general health\n\nWillingness to participate and provide written informed consent\n\nAvailability for all study appointments\n\nExclusion Criteria:\n\nSystemic diseases or conditions that affect bone healing or implant integration\n\nPresence of oral inflammation, infection, or soft tissue abnormalities at implant sites\n\nHistory of bruxism or parafunctional habits\n\nInability to understand or comply with study procedures",true,"30 Years","70 Years",{"count":55,"type":20},4,[23],"This clinical trial aims to compare three different impression techniques used to fabricate full-arch implant-supported dental prostheses. Accurate impressions are essential to ensure a passive and precise fit of the final prosthetic framework, which contributes to long-term implant success and patient comfort.\n\nIn this crossover study, participants with four osseointegrated dental implants in the lower jaw will undergo three types of impressions:\n\nConventional splinted impression using polyvinyl siloxane (PVS) material.\n\nStandard digital impression using an intraoral scanner.\n\nGeometric pattern-assisted digital impression, which incorporates a visual reference pattern to improve scan alignment and accuracy.\n\nEach participant will receive all three impression techniques in a randomized sequence, at different time points. The accuracy of each method will be assessed by evaluating the passivity of the resulting prosthetic frameworks using two methods: (1) digital superimposition analysis to measure three-dimensional (3D) spatial deviation, and (2) the clinical \"one-screw test\" to detect misfit.\n\nThe study seeks to determine whether digital scanning, particularly with geometric pattern assistance, can provide accuracy comparable to or better than conventional methods. Findings may guide improvements in digital prosthodontic workflows and support more efficient, predictable treatment outcomes.",[59,26,60,61],"Edentulous Jaw","Prosthodontics","Dental Implantation, Endosseous",[63,64,65,66,67,68,69,70,71],"Digital impression","Full-arch implant","Geometric pattern","Prosthesis framework","Intraoral scanner","Splinted impression","CAD\u002FCAM prosthodontics","Passive fit","Dental implants","RECRUITING","2025-07-13",{"date":75,"type":35},"2025-07-15",{"date":77,"type":20},"2025-09-30",{"date":79,"type":20},"2026-09-15",{"name":81,"class":42},"Mirna ashraf anis heneen",1]