This in vitro study used microcomputed tomography to evaluate the marginal fit of crowns fabricated using a chairside computer-aided design/computer-aided manufacturing (CAD/CAM) system with different methods of virtual model acquisition. Crowns were fabricated to fit in a cast containing a single human premolar. Four methods of virtual model acquisition were used: Group 1 (control), digital impressioning of a typodont; Group 2, digital impressioning of a powdered typodont; Group 3, digital impressioning of a regular impression; and Group 4, digital impressioning of a master cast. Statistically significant differences were found between the marginal gap of Group 2 and the other groups (P < 0.05); no differences were found among Groups 1, 3, and 4. The results showed that crowns fabricated using the chairside CAD/CAM system exhibited significantly smaller vertical misfit when a thin layer of powder was applied over the typodont before digital impressioning.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Real-World-Evidence of Digital Health Applications (DiGAs) in Rheumatology: Insights from the DiGAReal Registry.
Rheumatol Ther
January 2025
Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany.
Introduction: Prescribable digital health applications (DiGAs) present scalable solutions to improve patient self-management in rheumatology, however real-world evidence is scarce. Therefore, we aimed to assess the effectiveness, usage, and usability of DiGAs prescribed by rheumatologists, as well as patient satisfaction.
Methods: The DiGAReal registry includes adult patients with rheumatic conditions who received a DiGA prescription.
The Study Aims: To evaluate and compare the growth of gingiva around dental implants following the use of collagen matrices and connective tissue grafts (CTG).
Materials And Methods: The study included 80 study participants, who were divided into four groups based on the type of material used to enhance gingival thickness. Two groups utilized collagen matrices, Fibro-Gide and FibroMatrix as materials, while the other two groups utilized CTG obtained from the hard palate or tubercle area of the maxilla as controls.
Classification of Scanning Errors of Digital Scans Recorded by Using Intraoral Scanners.
J Esthet Restor Dent
January 2025
Department of Restorative Dentistry, University of Washington; Founder and Director, Kois Center, Seattle, Wash; and Private Practice, Seattle, WA, USA.
Objectives: The different scanning errors that can be caused by the operator handling an intraoral scanner (IOS) or the intraoral conditions of the patient being scanned have not been described. The purpose of this review was to describe and classify the scanning errors that can be identified in digital scans recorded by using IOSs.
Overview: The identification of scanning errors in an intraoral scan and understanding the cause of these scanning errors are fundamental procedures for successfully handling an IOS and integrating these digital data acquisition technologies in dental practices.
The effect of the guide hole height on the accuracy of implant placement: An in-vitro study.
J Stomatol Oral Maxillofac Surg
January 2025
School of Dentistry, Chonnam National University, Gwangju, Republic of Korea; Department of Oral & Maxillofacial Surgery, Chonnam National University Hospital, Gwangju, Republic of Korea. Electronic address:
Objective: Guided implant surgery using three-dimensional (3-D) planning software and 3-D printed surgical guides has become a critical tool for enhancing accuracy. This study aims to determine the minimum guide hole height necessary to maintain implant placement accuracy.
Materials And Methods: Ten maxillary models with edentulous areas were created using CT and optical scan data.
A randomized clinical trial comparing retention of complete dentures and oral health quality of life of patients with conventional and bioelectric impressions.
J Oral Biol Craniofac Res
December 2024
Department of Prosthodontics, School of Dental Sciences, Manav Rachna International Institute of Research and Studies, Faridabad, Haryana, India.
Aim: The aim of the present study was to comparatively evaluate the retention of complete dentures and oral health-related quality of life (OHRQoL) of patients with conventional and bioelectric impressions or transcutaneous electric nerve stimulation (TENS).
Materials And Methods: A total of thirty (n = 30) completely edentulous patients were randomly distributed into two groups: Group-C (n = 15) (Conventional) and Group-T (n = 15) (bioelectric). In Group C, border molding was performed using the manual manipulation of borders, and the final impression was made using zinc-oxide eugenol.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!