[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100625027":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":25,"centralContacts":25,"locations":25,"responsibleParty":30,"collaborators":25,"id":32,"slug":33,"hasResults":34,"nctId":35,"briefTitle":36,"officialTitle":37,"acronym":25,"eligibilityCriteria":38,"healthyVolunteers":34,"sex":39,"minAge":40,"maxAge":25,"enrollmentInfo":41,"targetDuration":25,"studyType":44,"phases":45,"briefSummary":47,"conditions":48,"keywords":25,"overallStatus":50,"whyStopped":25,"lastUpdateSubmitDate":51,"lastUpdatePostDateStruct":52,"startDateStruct":55,"completionDateStruct":57,"leadSponsor":59,"locationsCount":25},{"fullName":5,"class":6},"Universitat Internacional de Catalunya","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"ultra-short implants","EXPERIMENTAL","4mm long implants",[13],"Device: Ultra short implants",{"label":15,"type":6,"description":16,"interventionNames":17},"long implants with bone augmentation","8mm long implants after transcrestal sinus floor elevation with bone augmentation",[18],"Device: Long implants with bone augmentation",[20,26],{"type":21,"name":22,"description":23,"armGroupLabels":24,"otherNames":25},"DEVICE","Ultra short implants","Placement of an ultra short implant of 4mm in the posterior atrophic maxilla without any bone regeneration procedure",[9],null,{"type":21,"name":27,"description":28,"armGroupLabels":29,"otherNames":25},"Long implants with bone augmentation","Placement of long implants of 8mm in the posterior atrophic maxilla alongside bone augmentation",[15],{"type":31,"investigatorFullName":25,"investigatorTitle":25,"investigatorAffiliation":25,"oldNameTitle":25,"oldOrganization":25},"SPONSOR","100625027","clinical-and-patient-outcomes-of-4-mm-ultra-short-vs-8-mm-implants-with-bone-augmentation-in-the-back-upper-jaw-100625027",false,"NCT07417293","Clinical and Patient Outcomes of 4 mm Ultra-Short vs. 8 mm Implants With Bone Augmentation in the Back Upper Jaw","Clinical- and Patient-related Outcomes of 4 mm Ultra-short Implants Compared to 8 Mm-long Implants With Bone Augmentation for the Rehabilitation of Posterior Atrophic Maxilla: a Randomized Controlled Clinical Trial.","inclusion criteria:\n\n* Inform consent signed.\n* Adult patients (≥18 years old).\n* No pregnant women or without the desire to stay.\n* Periodontal and peri-implant health in a pristine or reduced periodontium.\n* Full mouth plaque score \\\u003C 20% (O'Leary, 1972)\n* Maxillary multiple posterior maxillary healed sites at least 4 months after extraction (with antagonist teeth with a good prognosis (Lindhe et al. 2008)) presenting ≥ 6.5 mm of bone width and 5-6 mm in height from the bone crest to the floor of the sinus.\n* Need for a multiple splinted implant supported restoration with distal adjacent teeth or distal free-end in the posterior maxilla\n\nexclusion criteria\n\n* Patients with uncontrolled systemic diseases.\n* Smoker patients (≥10 cig\u002Fday).\n* Patients taking medications that affect bone metabolism or immunologic disorders.\n* Patients allergic to penicillin.\n* Patients presenting acute or chronic maxillary sinus lesions.\n* Advanced vertical crestal bone atrophy in the posterior maxilla (Type V and IV, Cawood-Howell Classification)\n* Vertical space of \\\u003C 6 mm for a screw-retained implant restoration.\n* Patients referring allergy to titanium or to any component of the implant\u002Frestoration.\n* No previous attempts of implant installation in the same surgical site.\n* Pregnant or lactating women.\n* Patients willing to start or in course of an orthodontic therapy.","ALL","18 Years",{"count":42,"type":43},35,"ESTIMATED","INTERVENTIONAL",[46],"NA","This study aims to compare 2 different groups of patients with both a healed site in the upper posterior sector after extractions, one treated with ultra-short implants, and another with long implants with bone regeneration. The objective is to evaluate if short-implants are superior in terms of better clinical outcomes, survival rates and safety, reduced surgical time, postoperative discomfort, and complication risk compared to conventional implants and bone regeneration.",[49],"Posterior Atrophic Maxilla","NOT_YET_RECRUITING","2026-02-10",{"date":53,"type":54},"2026-02-18","ACTUAL",{"date":56,"type":43},"2026-02-20",{"date":58,"type":43},"2029-07-01",{"name":5,"class":6}]