[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100641584":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":26,"centralContacts":29,"locations":35,"responsibleParty":52,"collaborators":26,"id":54,"slug":55,"hasResults":56,"nctId":57,"briefTitle":58,"officialTitle":59,"acronym":26,"eligibilityCriteria":60,"healthyVolunteers":61,"sex":62,"minAge":63,"maxAge":64,"enrollmentInfo":65,"targetDuration":26,"studyType":68,"phases":69,"briefSummary":71,"conditions":72,"keywords":77,"overallStatus":37,"whyStopped":26,"lastUpdateSubmitDate":79,"lastUpdatePostDateStruct":80,"startDateStruct":83,"completionDateStruct":85,"leadSponsor":87,"locationsCount":88},{"fullName":5,"class":6},"Gulf Medical University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"crown lengthening using Er:YAG Laser","EXPERIMENTAL","Er:YAG laser is used for both soft and hard tissue recontouring according to the manufacturer's guidelines. In the case of gingivectomy and soft tissue recontouring, 4x17mm, 0.6x17mm, and 1.3x17mm tips are used, and the soft tissue mode is selected on the device screen, which sets the device parameters to 100mJ x 20Hz. The tip is in direct contact with the soft tissue until the desired soft tissue level is achieved. For bone contouring, the hard tissue option is selected on the device's screen, setting the parameters to 150mJ x 20Hz. A non-contact approach is used to reshape the underlying bone.",[13],"Procedure: crown lengthening using Er:YAG Laser",{"label":15,"type":16,"description":17,"interventionNames":18},": conventional surgical crown lengthening by opening envelop flap","ACTIVE_COMPARATOR","Bevel incision with number 15 blades is place on the margin following with sulcular incision and excess gingival tissues are removed using Gracey currets .in case if any granulation tissues are seen it should be removed and washed with saline.\n\nFollowing with bone recontouring and reshaping after periosteal elevator is used to expose the underlying bone. fissure burs or coarse diamond stones are used until thing bone tissues are left over the root and rest can be removed with scaler to prevent damage to the tooth.\n\nResorbable sutures are place after the surgery and the case is followed up for 3 months period.\n\nIn the case of conventional surgical crown lengthening, after delivering the local anesthetic solution to the surgical area, soft tissue recontouring starts. This procedure, which involves excising the soft tissue with a gingivectomy, is typically done to improve aesthetics or create more space for better restoration seating. The gingival border is typically 1 mm coronal to the CEJ",[19],"Procedure: conventional surgical crown lengthening by opening envelop flap",[21,27],{"type":22,"name":23,"description":24,"armGroupLabels":25,"otherNames":26},"PROCEDURE","conventional surgical crown lengthening by opening envelop flap","Bevel incision with number 15 blades is place on the margin following with sulcular incision and excess gingival tissues are removed using Gracey currets .in case if any granulation tissues are seen it should be removed and washed with saline.\n\nFollowing with bone recontouring and reshaping after periosteal elevator is used to expose the underlying bone. fissure burs or coarse diamond stones are used until thing bone tissues are left over the root and rest can be removed with scaler to prevent damage to the tooth.\n\nResorbable sutures are place after the surgery and the case is followed up for 3 months period.\n\nIn the case of conventional surgical crown lengthening, after delivering the local anesthetic solution to the surgical area, soft tissue recontouring starts. This procedure, which involves excising the soft tissue with a gingivectomy, is typically done to improve aesthetics or create more space for better restoration seating. The gingival border is typically 1 mm coronal to the CEJ.",[15],null,{"type":22,"name":9,"description":11,"armGroupLabels":28,"otherNames":26},[9],[30],{"name":31,"role":32,"phone":33,"phoneExt":26,"email":34},"Nesma Shemais","CONTACT","0529961988","dr.nesma@gmu.ac.ae",[36],{"facility":5,"status":37,"city":38,"state":39,"zip":40,"country":41,"countryCode":42,"cosmosGeoPoint":43,"geoPoint":48,"contacts":49},"RECRUITING","Ajman","Ajman Emirate","00000","United Arab Emirates","AE",{"type":44,"coordinates":45},"Point",[46,47],55.47878,25.40177,{"lat":47,"lon":46},[50],{"name":51,"role":32,"phone":33,"phoneExt":26,"email":34},"Nesma Shemais, PhD",{"type":53,"investigatorFullName":26,"investigatorTitle":26,"investigatorAffiliation":26,"oldNameTitle":26,"oldOrganization":26},"SPONSOR","100641584","comparison-of-eryag-assisted-laser-crown-lengthening-against-surgical-crown-lengthening-100641584",false,"NCT07653802","Comparison of Er:YAG Assisted Laser Crown Lengthening Against Surgical Crown Lengthening","Comparison of Er:YAG Assisted Laser Crown Lengthening Against Surgical Crown Lengthening: a Longitudinal Study.","* Inclusion criteria:\n\n  1. Teeth indicated for crown lengthening procedure either in the maxillary or mandibular arch.\n  2. Patients in the age group of 18-75 years.\n* Exclusion criteria:\n\n  1. Patients with uncontrolled diabetes mellitus. Uncontrolled diabetes mellitus diagnosed with HbA1C ≥ 7% will be an exclusion criterion.\n  2. Smokers (considered as smoking ≥ 10 cigarettes\u002Fday)\n  3. Pregnant women\n  4. Patients with uncontrolled systemic diseases that may affect the healing of soft and hard tissues of the periodontium will be excluded.",true,"ALL","20 Years","70 Years",{"count":66,"type":67},26,"ESTIMATED","INTERVENTIONAL",[70],"NA","Crown lengthening is a clinical procedure that involves reshaping the gingiva, and sometimes bone, in order to expose more of tooth's structure. The procedures is performed for both functional and aesthetic reasons. In certain instances, this procedure is performed to This procedure is commonly performed for both functional and aesthetic reasons, such as to prepare a tooth for a crown or to enhance the appearance of a smile. Traditional crown lengthening techniques typically involve surgical methods that can be invasive, leading to extended recovery times and postoperative discomfort in this study we compare traditional versus the laser aided crown lengthening to compare the periodontal parameters in both cases.",[73,74,75,76],"Crown Lengthening","Crown Lengthening Procedure With Ostectomy","Laser","Piezoelectric Technique",[78],"crown lengthening","2026-06-16",{"date":81,"type":82},"2026-06-17","ACTUAL",{"date":84,"type":82},"2025-07-01",{"date":86,"type":67},"2026-09-30",{"name":5,"class":6},1]