[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100647318":3},{"organization":4,"armGroups":7,"interventions":18,"overallOfficials":24,"centralContacts":25,"locations":35,"responsibleParty":44,"collaborators":24,"id":48,"slug":49,"hasResults":50,"nctId":51,"briefTitle":52,"officialTitle":53,"acronym":24,"eligibilityCriteria":54,"healthyVolunteers":50,"sex":55,"minAge":56,"maxAge":57,"enrollmentInfo":58,"targetDuration":24,"studyType":61,"phases":62,"briefSummary":64,"conditions":65,"keywords":67,"overallStatus":38,"whyStopped":24,"lastUpdateSubmitDate":72,"lastUpdatePostDateStruct":73,"startDateStruct":76,"completionDateStruct":78,"leadSponsor":80,"locationsCount":81},{"fullName":5,"class":6},"Misr University for Science and Technology","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Digital Spectrophotometer","ACTIVE_COMPARATOR","A pre-calibrated spectrophotometer (per manufacturer guidelines) independently measures tooth and shade-tab color. Measurements are reported as CIE L\\*, a\\*, b\\* values. For each tooth-tab combination, the CIEDE2000 color difference (ΔE00) is calculated; the tab yielding the minimal ΔE00 is accepted as the selected shade.",[13],"Device: Computer-Assisted Software",{"label":15,"type":10,"description":16,"interventionNames":17},"Visual Shade Matching","Under the same conditions (lighting and patient positioning), experienced assessors independently determine the matching shade.",[13],[19],{"type":20,"name":21,"description":22,"armGroupLabels":23,"otherNames":24},"DEVICE","Computer-Assisted Software","A standardized Computer-assisted photographic shade-matching workflow will be employed using a novel photo-analysis software that first receives the photos and balances each photo to suppress unrealistic colors using a standard gray reference card (WhiBal; Michael Tapes Design), with nominal colorimetric targets of L\\* =75, a\\* = 0, b\\* = 0, will be included in every photograph within the plane of the teeth.\n\nThe Photo is firstly captured with a Nikon D3400 DSLR crop-frame camera (Nikon Corp) mounted on a stable tripod to avoid movements during capturing the photo and set the proper angulation and parallelism. All camera parameters will be standardized.\n\nThe program establishes a pixel-to-metric conversion scale (cm) from known distances and overlays orthogonal reference axes to fix landmark orientation and reproducible measurement geometry. Using these guides, tooth height and width are annotated, and the region of interest is consistently defined at the central area of the middle third.",[9,15],null,[26,31],{"name":27,"role":28,"phone":29,"phoneExt":24,"email":30},"Ahmed Saleh Ali ASA Resident doctor, Bachelor degree","CONTACT","+201147965014","ahmed.msaleh@must.edu.eg",{"name":32,"role":28,"phone":33,"phoneExt":24,"email":34},"Esraa Esmeail Hussien EEH lecturer, phd holder","+201111103836","dr.esraaism@gmail.com",[36],{"facility":37,"status":38,"city":39,"state":40,"zip":41,"country":42,"countryCode":43,"cosmosGeoPoint":24,"geoPoint":24,"contacts":24},"Misr university for science and technology","RECRUITING","Sixth of October","Giza Governorate","12566","Egypt","EG",{"type":45,"investigatorFullName":46,"investigatorTitle":47,"investigatorAffiliation":5,"oldNameTitle":24,"oldOrganization":24},"PRINCIPAL_INVESTIGATOR","Ahmed Mohamed Saleh Ali Farrag","resident doctor","100647318","diagnostic-accuracy-of-innovative-photo-analysis-software-in-resin-composite-shade-matching-100647318",false,"NCT07707323","Diagnostic Accuracy of Innovative Photo-Analysis Software in Resin Composite Shade Matching","In Vivo Diagnostic Accuracy of Innovative Photo-Analysis Software and Digital Spectrophotometer Compared With Visual Technique in Resin Composite Shade Matching","Inclusion Criteria:\n\n* Age: 18-45 years.\n* Sex: Male or female.\n* General: Cooperative individuals who agree to participate and comply with study visits (written informed consent to be obtained as applicable).\n* Dentition: Presence of sound maxillary incisors that will meet the tooth-level criteria.\n\nExclusion Criteria:\n\n* Poor oral hygiene.\n* Severe systemic\u002Fmedical complications that may contraindicate elective dental care.\n* Pregnancy.\n* Heavy smokers.\n* Xerostomia.\n* Temporomandibular joint disorders.","ALL","18 Years","45 Years",{"count":59,"type":60},52,"ESTIMATED","INTERVENTIONAL",[63],"NA","This study aims to assess the agreement between new computer software using dental photographs, digital spectrophotometer and the visual technique, in achieving accurate resin composite shade matching.",[66],"Shade Matching",[68,69,70,71],"diagnostic accuracy","spectrophotometer","Computer assisted software","visual assessment","2026-07-15",{"date":74,"type":75},"2026-07-16","ACTUAL",{"date":77,"type":75},"2026-05-01",{"date":79,"type":60},"2026-10-01",{"name":5,"class":6},1]