[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"severe-alveolar-bone-atrophy-of-the-posterior-maxilla-with-residual-bone-height-4-mm\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:severe-alveolar-bone-atrophy-of-the-posterior-maxilla-with-residual-bone-height-4-mm":44},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,1,0,[8],{"id":9,"slug":4,"hasResults":10,"nctId":11,"briefTitle":12,"officialTitle":13,"acronym":14,"eligibilityCriteria":15,"healthyVolunteers":10,"sex":16,"minAge":17,"maxAge":18,"enrollmentInfo":19,"targetDuration":4,"studyType":22,"phases":23,"briefSummary":25,"conditions":26,"keywords":28,"overallStatus":32,"whyStopped":4,"lastUpdateSubmitDate":33,"lastUpdatePostDateStruct":34,"startDateStruct":37,"completionDateStruct":39,"leadSponsor":41,"locationsCount":5},"100638909",false,"NCT07619846","Using Chin Bone Rings for Sinus Lifting and Dental Implants in One Surgery","Evaluation of Effectiveness of Bone Ring Technique in One Stage Surgery of External Maxillary Sinus Lifting With Implantation: A Prospective Case Series","BRT-SINUS","Inclusion Criteria:\n\n* Need for dental implant in posterior maxilla (premolar\u002Fmolar).\n* Residual alveolar bone height ≤4 mm on preoperative CBCT.\n* Age ≥18 years.\n* Controlled systemic health.\n* Able to comply with procedures and follow up.\n* Good oral hygiene.\n* Signed written informed consent.\n\nExclusion Criteria:\n\n* Uncontrolled systemic disease.\n* Head\u002Fneck radiotherapy.\n* Bisphosphonate therapy \\>3 years.\n* Autoimmune disease affecting healing.\n* Pregnancy\u002Flactation.\n* Active maxillary sinus pathology (sinusitis, cysts, polyps, tumours).\n* Heavy smoking (\\>10 cigarettes\u002Fday).\n* Severe bruxism.","ALL","18 Years","70 Years",{"count":20,"type":21},10,"ESTIMATED","INTERVENTIONAL",[24],"NA","This study evaluates the Bone Ring Technique, a single stage procedure that combines external sinus floor elevation and dental implant placement using an autogenous bone ring harvested from the chin. Ten patients with residual alveolar bone height ≤4 mm in the posterior maxilla will be enrolled. Implant stability (ISQ), vertical bone gain, peri implant bone density, and implant survival will be assessed over 6 months. The aim is to reduce treatment time and surgical interventions compared to traditional two stage approaches.",[27],"Severe Alveolar Bone Atrophy of the Posterior Maxilla With Residual Bone Height ≤4 mm",[29,30,31],"Bone Ring Technique","Maxillary Sinus Floor Elevation","Dental Implant","NOT_YET_RECRUITING","2026-06-03",{"date":35,"type":36},"2026-06-04","ACTUAL",{"date":38,"type":21},"2026-05-31",{"date":40,"type":21},"2027-03-21",{"name":42,"class":43},"Damascus University","OTHER",""]