Clinical trials: Trueness
Dental Occlusion, Occlusal Analysis
Trueness of Digital Occlusal Analysis
The aims of this observational study are to evaluate the trueness of two different digital occlusal analyzers; handheld occlusal analyzer versus intraoral scanner in comparison to conventional methods in identifying true occlusal…
- Trial name
- NCT06672627
- Where
- Egypt
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Alexandria University
Truness of Impression Techniques in All on x Cases, Trueness of Full Arch Implant Prosthesis Impression
Truness of Full Arch Impressions in All on x Cases
This study aims to compare the trueness and precision of three impression methodologies photogrammetry, digital intraoral scanning with splinted scan bodies, and conventional open tray impressions in the context of the All-on-X…
- Trial name
- NCT07550725
- Testing
- photogrammetry based full arch impression, Digital Impression Using Splinted Scan Bodies, Conventional Open-Tray Implant Impression
- Where
- Egypt
- Volunteers
- 11 people
- Sponsor
- October 6 University
Edentulous Jaw
Trueness of Intra-Oral Scanners Compared to an Extra-Oral Scanner for Scanning of Mandibular Edentulous Impressions
the relative accuracy of different intraoral scanner types specifically for capturing the complex morphology of edentulous arches, including peripheral borders and mobile tissues, remains an area of investigation, with…
- Trial name
- NCT07740798
- Testing
- Digital impression of the mandibular edentulous arch
- Volunteers
- 9 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Accuracy of Digital Dental Model
Accuracy of Digital Models Using Open-access Software Programs
Background: Despite the clear drive toward digital model transformation, there are limitations to some paid software necessary for digital model production.
- Trial name
- NCT06035432
- Testing
- Bluesky software, 3D slicer software, OnDemand software
- Where
- Egypt
- Volunteers
- 18 people
- Sponsor
- Hams Hamed Abdelrahman
Tooth Defect
Occlusal Contact Trueness Affected by Six Chairside CAD/CAM Ceramic Materials
The aim of this clinic self-control study was to evaluate the trueness of occlusal contact affected by six ceramic materials during chairside fabricating process and offer recommendations for occlusal offset according to…
- Trial name
- NCT05346744
- Testing
- Chairside CAD/CAM ceramic materials for dental restoration
- Where
- China
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Fujian Medical University
Acquired Maxillary Defect
Accuracy of Intraoral Scanners in Patients With Maxillary Defects
This clinical study evaluated the trueness of two intraoral scanners in patients with acquired maxillary defects. Eight patients with unilateral maxillary defects were included.
- Trial name
- NCT07873775
- Testing
- Medit i700, TRIOS 3
- Where
- Egypt
- Volunteers
- 8 people
- Sponsor
- Ain Shams University
Adaptation of Different Types of Clear Aligners
Randomized In-Vivo Comparison of 3D-Printed and Thermoformed Clear Aligners: A Multi-Subject, Time-Dependent Analysis of Adaptation and Trueness
This prospective clinical study aims to evaluate and compare the in vivo adaptation and trueness of clear aligners fabricated using thermoforming and direct three-dimensional (3D) printing technologies.
- Trial name
- NCT07639515
- Testing
- Device: Invisalign Passive Clear Aligner, Spark Passive aligners, Zendura passive aligner
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Florida
Trueness, Intraoral Scanner
Cut-out-Rescan Procedure Under Different Rubber-Dam Isolation
Aim: This clinical study investigated the effect of the "cut-out-rescan" procedure under different rubber dam isolation (blue and black) on restorative scanning trueness of two intraoral scanners.
- Conditions
- Trueness, Intraoral Scanner, Rubberdam, Color
- Trial name
- Cut-out-rescan (NCT06893263)
- Testing
- Taking images from the right lower jaw with an intraoral scanner, Clamp placement on canine and 2nd molar teeth and rubberdam rubber band insertion
- Where
- Turkey (Türkiye)
- Volunteers
- 20 people
- Sponsor
- Marmara University
Facial Neoplasms
A Comparison of Accuracy Between Different Facial Scanning Techniques
Conventional alginate impressions are still a burden to both the patient and the operator especially in extraoral maxillofacial rehabilitations cases.
- Trial name
- NCT07557212
- Testing
- portable scanning, stationery scanning, mobile app scanning
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Digitalization Accuracy
Accuracy and Scannability of Implant-Supported Framework Materials
The present study aims to clinically evaluate and compare the scanning accuracy and the scannability of 2 different materials used in constructing frameworks for implant-supported prosthesis (titanium and PEEK).
- Trial name
- NCT06423482
- Testing
- PEEK bar, Titanium bar
- Where
- Egypt
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- Nourhan Samy
Denture, Complete Edentulism
Trueness of Full Arch Scans and Generated Digital Implant Models
The goal of this clinical trial study is to evaluate the accuracy of the full digital workflow for four-implant, screw-retained mandibular hybrid prostheses in patients with completely edentulous mandible.
- Trial name
- NCT06281002
- Testing
- conventional impression stone casts digitization, digital scanning with coupled scanning aiding device, Digital Implant Model assessment of accuracy
- Volunteers
- 9 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Trueness, Intraoral Scanner
Cut-out-Rescan Procedure Under Rubber-Dam Isolation
Aim: This clinical study investigated the effect of the "cut-out-rescan" procedure under rubber dam isolation on restorative scanning trueness of four intraoral scanners.
- Conditions
- Trueness, Intraoral Scanner, Rubberdam
- Trial name
- NCT06689384
- Testing
- Taking images from the right lower jaw with an intraoral scanner, Clamp placement on canine and 2nd molar teeth and rubberdam rubber band insertion
- Where
- Turkey (Türkiye)
- Volunteers
- 20 people
- Sponsor
- Marmara University
Tooth Diseases
Repetition Improves Precision and Trueness of Digital Intraoral Scans
The objectives of this study were to compare the precision of two digital intraoral scanners from a series of repeat scan images, and to investigate the effect of the learning curve on changes in trueness when scanning the full…
- Trial name
- NCT02868957
- Testing
- impression data from reference scanner, iTero, Trios
- Where
- South Korea
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Seoul National University Gwanak Dental Hospital
Complete Edentulism, Maxillary Complete Denture Rehabilitation
3D Printing Orientation and Film Thickness for Maxillary Complete Dentures
This randomized crossover clinical trial aims to evaluate the effect of different three-dimensional (3D) printing orientations and layer thicknesses on the trueness, dimensional accuracy, and patient satisfaction of maxillary…
- Conditions
- Complete Edentulism, Maxillary Complete Denture Rehabilitation, Prosthodontics, 3d Printing
- Trial name
- NCT07740278
- Testing
- 0° 3D-Printed Maxillary Complete Denture, 45° 3D-Printed Maxillary Complete Denture, 90° 3D-Printed Maxillary Complete Denture
- Where
- Egypt
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Tanta University
Denture Hyperplasia
Trueness and Dimensional Deviation of 3D Printed Nanocomposite Maxillary Denture Base Resin (In Vivo Study)
Purpose: To evaluate the effect of adding nano ZrO2 and nano TiO2 nanoparticles on trueness and dimensional deviation of maxillary 3D printed denture base resin on completely edentulous patients.
- Trial name
- dimensions (NCT06959576)
- Testing
- nanoparticles
- Where
- Egypt
- Volunteers
- 24 people
- Sponsor
- Tanta University