[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100550670":3},{"organization":4,"armGroups":7,"interventions":23,"overallOfficials":28,"centralContacts":37,"locations":43,"responsibleParty":62,"collaborators":28,"id":66,"slug":67,"hasResults":68,"nctId":69,"briefTitle":70,"officialTitle":71,"acronym":28,"eligibilityCriteria":72,"healthyVolunteers":73,"sex":74,"minAge":75,"maxAge":76,"enrollmentInfo":77,"targetDuration":28,"studyType":80,"phases":81,"briefSummary":83,"conditions":84,"keywords":86,"overallStatus":46,"whyStopped":28,"lastUpdateSubmitDate":92,"lastUpdatePostDateStruct":93,"startDateStruct":96,"completionDateStruct":98,"leadSponsor":100,"locationsCount":101},{"fullName":5,"class":6},"Mansoura University","OTHER",[8,13,18],{"label":9,"type":6,"description":10,"interventionNames":11},"Group I Stainless steel crowns (control group)","It will include 17 molars that will be restored by a stainless steel crown.",[12],"Other: Preformed stainless steel crown.",{"label":14,"type":6,"description":15,"interventionNames":16},"Group II: Preformed zirconia crown (study group)","It will include 17 molars that will be restored by Zirconia crowns.",[17],"Other: Preformed zirconia crown",{"label":19,"type":6,"description":20,"interventionNames":21},"Group III: Preformed BioFlx crown (study group)","It will include 17 molars that will be restored by BioFlx crowns.",[22],"Other: Preformed BioFlx crown",[24,29,33],{"type":6,"name":25,"description":26,"armGroupLabels":27,"otherNames":28},"Preformed stainless steel crown.","A well-fitted preformed stainless-steel crown will be chosen by measuring the mesiodistal dimension of the tooth or its contralateral counterpart, using a graduated periodontal probe for guidance. (6) Tooth preparation will be carried out with #835 diamond fissure bur to reduce occlusal surface up to 1 to 1.5 mm. The interproximal reduction will be made mesially and distally using #169 L tapered diamond bur around 0.5 mm to clear the contact area creating a feather edge finish line. The selected crown size will be checked, and a trial fit will be done before cementation. The crown will be cemented using self-cured RMGI luting cement. The excess will be removed, and proper occlusion will be checked.",[9],null,{"type":6,"name":30,"description":31,"armGroupLabels":32,"otherNames":28},"Preformed zirconia crown","The material for crown restoration for this group is the preformed zirconia crown. Tooth preparation will be started by occlusal reduction (1 to 1.5 mm) using #835 diamond fissure bur. The interproximal reduction will be done mesially and distally with #169 L tapered diamond bur in such a way that a straight probe passes freely through the contact area. Rounding of line angles will be done and a knife-edge finish margin of the proximal surface will be obtained avoiding any ledge formation. The selected crown will be placed and checked for a passive fit. Consistent firm finger pressure will be applied during cementation with self-cured RMGI luting cement. Finally, crown placement will be checked.",[14],{"type":6,"name":34,"description":35,"armGroupLabels":36,"otherNames":28},"Preformed BioFlx crown","The prefabricated BioFlx crown will be used in this group. A similar-sized preformed crown will be selected. Tooth preparation will be carried out similarly to traditional SSCs with #835 diamond fissure bur for occlusal reduction by 1-1.5 mm including the central groove. The proximal preparation will be done mesially and distally with #169 L tapered diamond bur around 0.5 mm to clear the contact area creating a feather edge finish line. Placement of the crown will be achieved by a snug fit. Crown cementation will be carried out using self-cured RMGI luting cement and the excess cement will be removed using a floss or an explorer. (13) Finally, crown placement will be checked",[19],[38],{"name":39,"role":40,"phone":41,"phoneExt":28,"email":42},"Heba 0. Elbadry","CONTACT","+201116121999","Hebaaelbadry@mans.edu.eg",[44],{"facility":45,"status":46,"city":47,"state":48,"zip":49,"country":50,"countryCode":51,"cosmosGeoPoint":52,"geoPoint":57,"contacts":58},"Faculty of Dentistry, Mansoura University.","RECRUITING","Al Mansurah","Dakahlia Governorate","35516","Egypt","EG",{"type":53,"coordinates":54},"Point",[55,56],31.38069,31.03637,{"lat":56,"lon":55},[59],{"name":60,"role":40,"phone":61,"phoneExt":28,"email":42},"Heba O Elbadry, B.D.S & M.D.S","+0201116121999",{"type":63,"investigatorFullName":64,"investigatorTitle":65,"investigatorAffiliation":5,"oldNameTitle":28,"oldOrganization":28},"PRINCIPAL_INVESTIGATOR","Heba Elbadry","Assistant lecturer, peadiatric dentistry department","100550670","comparative-clinical-evaluation-of-bioflx-zirconia-and-stainless-steel-crowns-in-primary-molars-100550670",false,"NCT06450093","Comparative Clinical Evaluation of BioFlx, Zirconia, and Stainless-Steel Crowns in Primary Molars","Comparative Clinical Evaluation of BioFlx, Zirconia, and Stainless-Steel Crowns in Primary Molars: A Randomized Controlled Clinical Trial","Inclusion Criteria:\n\n* Children who are free from any systemic disease.\n* Children with a carious lower primary molar indicated for crown restoration.\n* Teeth with an intact antagonist and neighboring primary molar.\n* Cooperative children with scores 1 and 2 (positive or definitely positive) according to Frankl's behavior rating scale.\n\nExclusion Criteria:\n\n* Children with extremely poor oral hygiene.\n* Teeth showing radiographical furcation involvement or root resorption.\n* Children with para-functional habits, bruxism, or deep bite.\n* Teeth with inadequate non-restorable crown structure.",true,"ALL","4 Years","7 Years",{"count":78,"type":79},51,"ESTIMATED","INTERVENTIONAL",[82],"NA","This study will be conducted to:\n\nEvaluate and compare the clinical success, periodontal changes, and wear of antagonist teeth for three types of prefabricated crowns in primary molars: BioFlx crowns, Zirconia crowns, and Stainless Steel crowns.",[85],"Dental Restoration",[87,88,89,90,91],"Bioflx Crowns","Wear","Zirconia Crowns","stainless steel Crowns","periodontal changes","2024-06-06",{"date":94,"type":95},"2024-06-10","ACTUAL",{"date":97,"type":95},"2024-04-04",{"date":99,"type":79},"2026-06-01",{"name":5,"class":6},1]