Publications by authors named "Elena Sicilia"
Statement Of Problem: Intraoral scanners (IOSs) provide a digital alternative to conventional implant impression techniques. However, the effect of the supramucosal height of the scan body and implant angulation on the accuracy of IOSs remains unclear.
Purpose: The purpose of this in vitro study was to measure the impact of the supramucosal height of the scan body and implant angulation on the accuracy (trueness and precision) of intraoral digital implant scans in partially edentulous models.
Purpose: To assess the accuracy of fit of complete-arch printed prosthesis prototypes generated with a digital workflow protocol for completely edentulous jaws.
Materials And Methods: Forty-five edentulous jaws (35 patients) underwent intraoral complete-arch digital scans with the double digital scanning (DDS) technique and the generated standard tessellation language (STL) files were superimposed and imported into computer-aided design software. After STL merging, each master STL file was used for printing a prosthesis prototype.
Article Synopsis
- This study compares the accuracy of full-arch digital scans and conventional implant impressions for patients with no teeth in their upper or lower jaws.
- It involved 27 patients and analyzed the 3D deviations between digital scans and traditional stone casts to determine which method is more precise.
- Results showed that both methods had similar accuracy, with 3D deviations well within acceptable limits, and no significant difference was found between the maxillary and mandibular jaws.
Purpose: To analyze the influence of the restorative material type (definitive and interim) and its surface treatment (polished or glazed) on the scanning accuracy of an intraoral scanner.
Material And Methods: A mandibular dental typodont containing 3 typodont teeth (left second premolar and left first and second molars) was used for testing. Ten groups were created based on the crown material: typodont tooth (control group), gold (G group), zirconia (Z group), lithium disilicate (LD group), hybrid ceramic (HC group), composite resin (CR group), conventional PMMA (CNV-PMMA group), bis-acryl composite resin (CNV-BA group), milled PMMA (M-PMMA group), and additively manufactured bis-acryl-based polymer (AM-BA group).
Statement Of Problem: Cutting off and rescanning procedures have been shown to affect the accuracy of intraoral scanning; however, the clinical impact of tooth cutting off and rescanning of mesh holes on accuracy remains unclear.
Purpose: The purpose of this clinical study was to evaluate the influence of the tooth location of the rescanned mesh holes (with or without modifying the preexisting intraoral digital mesh with the rescanning procedures) on intraoral scanning accuracy.
Material And Methods: A maxillary right quadrant digital scan was acquired (control scan) on a dentate participant by using an intraoral scanner (TRIOS 4).
Objectives: To evaluate whether the cutting-off and rescanning procedures have an impact on the accuracy (trueness and precision) of the intraoral digital scan.
Methods: A right quadrant digital scan (reference scan) of a participant was obtained using an intraoral scanner (IOS) (TRIOS 4; 3Shape A/S, Copenhagen, Denmark). The reference scan was duplicated 135 times and divided into 3 groups based on the number of rescanned mesh areas: 1 (G1 group), 2 (G2 group), and 3 (G3 group) mesh holes.
The purpose of this clinical report is to present a complete digital workflow for the fabrication of complete arch fixed zirconia implant restorations. An intraoral scanner was used to capture the implants' position at the abutment level and also the patient's existing interim prostheses with the double digital scanning technique. A novel scan body and impression pin were utilized throughout the scanning process which allowed for the accurate and reproducible superimposition of the generated Standard Tesselation Language (STL) files.
View Article and Find Full Text PDFPurpose: To assess the accuracy of template-guided implant surgery for edentulous arches.
Materials And Methods: The stone master casts of 25 edentulous arches treated with either 4 or 6 implants with CBCT generated template-guided surgery were included in this observational cohort study. The stone casts generated from the surgical templates (group one) prior to implant placement were digitized into Standard Tesselation (STL) files with a reference scanner.