The aim of this study is to assess the precision of the complete crown technique employed for the superimposition of 3D models, specifically in the quantitative volumetric evaluation of gingival tissues. This technique was initially introduced in an in-vitro study by Dritsas et al. (2023) as a means to achieve an accurate, reproducible, and simple method for quantification of gingival recession.
Patients aged 18 years or older.
Patients requiring esthetic crown lengthening.
Full-mouth plaque and bleeding score not exceeding 20%.
Presence of at least 2.5 mm keratinized tissue width (Pontoriero & Carnevale, 2001).
Systemic health conditions that contraindicate or affect healing of periodontal surgery.
Patients requiring prosthetic crowns or restorations in the esthetic zone.
Gummy smile with normal tooth proportions.
Patients treated with medications known to affect the gingiva (Phenytoin, Cyclosporine and Nifedipine).
Single group
Group I
Diagnostic testComplete Crown technique of superimposition
Group II
Diagnostic testGold standard technique of superimposition
Superimposition accuracy
Using Geomagic Software (RMS) in Millimeter(mm)
Soft tissue volumetric Changes
Digital using intraoral scanner and blenderfordental software in Millimeter(mm)
Gingival Margin level change
Digital using intraoral scanner and blenderfordental software in Millimeter(mm)
Intra-Inter Assessor reliability
Intraclass correlation coefficient
Operator's satisfaction
Questionnaire
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British University In Egypt
Lead sponsor
Cairo University
Collaborator
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