The Effect of Average Value Mounting and Facebow Transfer on Condylar Guidance Settings in a Semi-Adjustable Articulator - A Comparative Study using Digital Lateral Cephalographs in Edentulous Patients.

Background: While we attempt to restore occlusion in completely edentulous patients there is a consensus among clinicians to articulate the cast using average value and avoid performing facebow transfer. Various studies question the application of facebow transfer in the fabrication of removable complete denture fabrication.

Aim: This study was therefore aimed to study the effect on condylar guidance with casts mounted by the facebow method, Bonwill's method, and radiographic method.

Taxonomic discordance of immersive realities in dentistry: A systematic scoping review.

Objectives: This review aimed to map taxonomy frameworks, descriptions, and applications of immersive technologies in the dental literature.

Data: The Preferred reporting items for systematic reviews and meta-analyses extension for scoping reviews (PRISMA-ScR) guidelines was followed, and the protocol was registered at open science framework platform (https://doi.org/10.

Prevalence and Variation of Medical Comorbidities in Oral Surgery Patients: A Retrospective Study at Jazan University.

BACKGROUND An aged population is susceptible to chronic diseases, which impacts oral surgery treatment procedures. This retrospective study aimed to evaluate the incidence of medical comorbidities in 640 oral surgery patients treated at the College of Dentistry, Jazan University. MATERIAL AND METHODS This single-center observational study investigated medical records of outpatients who visited Jazan University Dental College Hospital in a 1-year period (2018-2019).

Dental implant placement with immersive technologies: A preliminary clinical report of augmented and mixed reality applications.

A preliminary clinical report of implant placements with 2 immersive reality technologies is described: augmented reality with head mounted display and mixed reality with a tablet PC. Both immersive realities are promising and could facilitate innovative dental applications. However, mixed reality requires further development for clinical optimization.

Potential therapeutic applications of mesenchymal stem cells in the oral and maxillofacial tissues.

Over the past decades, we have noted that the study of stem cells is of interest to scientists because it offers great promise for the development of cell-based therapies and establishes basic models for studying the pathogenesis of diseases, overcoming all the challenges it encounters. The majority of craniofacial tissues are derived from mesenchymal tissues, so it makes the mesenchymal stem cells (MSCs) an attractive candidate for regenerating damaged or diseased craniofacial structures. Mesenchymal stem cells (MSCs) do not have the same obstacles as embryonic stem cells.

Oral chemical ulceration due to iatrogenic hydraulic oil leakage from the dental unit of a surgical handpiece: A case report.

Oral chemical ulceration is a rare condition. The causes differ from misuse of dental material by dentists and over-the-counter drugs (OTC) to the herbal ingredients in our foods. Detailed patient history helps to explore the diagnosis and further management of such a lesion, which extend from no intervention in mild cases to surgical intervention in severe cases.

Virtual patient representation with silicone guide and a 3D scanner accessory for a user-friendly facial scanning workflow: A clinical report of smile design and ceramic veneers.

Digital smile design and ceramic veneers are described with virtual patient representation. The procedure included facial scanning with a 3D scanner accessory (Structure sensor pro; Occipital Inc) mounted on a tablet computer (iPad; Apple Inc) and an innovative chairside silicone guide to replace the intraoral scan body for a straightforward and user-friendly workflow.

Additively manufactured CAD-CAM complete dentures with intraoral scanning and cast digitization: A controlled clinical trial.

Purpose: To assess, clinically, patient satisfaction of additively manufactured complete dentures with intraoral scanning and hybrid cast digitization in comparison with conventional complete dentures.

Materials And Methods: Participants who were edentulous in both arches were recruited and received three types of complete dentures (CDs): conventionally manufactured with conventional impression (CC), additively manufactured with intraoral scanning (AMI), and additively manufactured with cast digitization (AMH). Definitive impressions of the edentulous arches were made with medium viscosity polyvinyl siloxane (Hydrorise Monophase; Zhermack, Italy) for the CC group, intraoral scanning (TRIOS 4; 3Shape, Copenhagen, Denmark) for the AMI group, and laboratory scanning of the definitive casts (Ceramill Map400 AMANNGIRRBACH, Pforzheim, Deutschland) for the AMH group.

Evaluation of Marginal and Internal Fit of Ceramic Laminate Veneers Fabricated with Five Intraoral Scanners and Indirect Digitization.

The long-term success of ceramic laminate veneers (CLVs) is influenced by the marginal and internal fit of the restorations. However, studies comparing the fit of CLVs using different intraoral scanners or the indirect digitization technique are lacking. The purpose of this study was therefore to assess the marginal and internal fit of CAD/CAM-milled CLVs using different intraoral scanners and the indirect digitalization technique.

Trueness of intraoral scanning of edentulous arches: A comparative clinical study.

Purpose: To compare the accuracy of intraoral scanning (IOS) of the edentulous arch with the hybrid protocol of cast digitization (CD), and to investigate the effect of arch type and area on trueness.

Materials And Methods: Participants that were edentulous in both arches were recruited. Two impression protocols were used; the IOS as the test protocol with an IOS device (TRIOS 4; 3Shape, Denmark), and the CD as the control, including tracing compound (TRACING STICKS; Kemdent, UK) for border molding, polyvinyl siloxane (Hydrorise Monophase; Zhermack, Italy) for impression, and cast digitization with a laboratory scanner (ceramill® map400, AMANNGIRRBACH, Germany).

Additive Manufacturing of Dental Ceramics: A Systematic Review and Meta-Analysis.

Purpose: The purpose of this systematic review and meta-analysis was to evaluate the effect of using additive manufacturing (AM) for dental ceramic fabrication in comparison with subtractive manufacturing (SM), and to evaluate the effect of the type of AM technology on dental ceramic fabrication.

Materials And Methods: A search was conducted electronically in MEDLINE (via PubMed), EBSCOhost, Scopus, and Cochran Library databases, and also by other methods (table of contents screening, backward and forward citations, and grey literature search) up to February 12, 2022, to identify records evaluating additive manufacturing of ceramics for dental purposes in comparison with subtractive manufacturing. A minimum of 2 review authors conducted tstudy selection, quality assessment, and data extraction.

I See Faces! A Review on Face Perception and Attractiveness with a Prosthodontic Peek at Cognitive Psychology.

A human face contains a wealth of information about an individual, with which an observer can instinctively make a judgment on the attractiveness of the face. However, despite the profuse literature on facial and smile attractiveness, their origins, determinants, and perceptions remain controversial. The axiom in face processing research is that a face is perceived as an amalgamation of its features, and is referred to as "whole" or "holistic" perception.

Analysis of the effect magnitude of different parameters on smile attractiveness.

Objective: To evaluate the effect magnitude of different parameters on smile attractiveness.

Materials And Methods: A reference and 13 images were produced by manipulating 13 parameters. Image rating was performed with a 4-point Likert scale from least attractive (1) to most attractive (4).

Telemedicine Among Oral Medicine Practitioners During COVID-19 Pandemic and Its Future Impact on the Specialty.

Background: The coronavirus disease 2019 (COVID-19) pandemic necessitated widespread changes in delivery of dental care. Telemedicine utilization increased overnight during this pandemic because of its ability to enhance access to oral healthcare, easily link to remote area, time management, low cost, etc. We aimed to identify the utilization of telemedicine among oral medicine practitioners in Saudi Arabia during COVID-19 pandemic and identify future impacts, potential challenges and barriers hindering the implementation of telemedicine.

Effect of CAD/CAM Bur Deterioration on the Surface Roughness of Ceramic Crowns.

Purpose: To evaluate the effect of repetitive milling on the surface roughness of ceramic crowns.

Materials And Methods: Twenty feldspathic ceramic crowns (VITABLOCS Mark II; Vita Zahnfabrik, Bad Säckingen, Germany) milled with hard milling protocol, and 20 zirconia crowns (5Y-TZP, inCoris TZI; Dentsply Sirona, York, PA) milled with soft milling protocol, using a 5-axis milling machine (inLab MC X5; Dentsply Sirona) were investigated. Atomic force microscopy (SPM SmartSPM™-1000) was used for surface roughness measurements (Ra, RMS).

Effect of CAD-CAM tool deterioration on the trueness of ceramic restorations.

Statement Of Problem: Tools will gradually deteriorate with repetitive milling. However, tool lifetime can vary depending on the type of milling machine, the hardness of the ceramic material, and the size of the restoration. Studies evaluating the effect of tool deterioration on the trueness of milled restorations are lacking.

Biosafety Level 2 cabinet UV-C light exposure of sports antidoping human urine samples does not affect the stability of selected prohibited substances.

The current study examined the stability of several antidoping prohibited substances analytes in urine after 15-min exposure to UV-C light in a Biosafety Level 2 cabinet. The urine matrices were exposed within the original antidoping bottles with the aim to destroy DNA/RNA and possible SARS CoV-2. The analytes small molecules Phase I and Phase II metabolites and peptides, in total 444, endogenous, internal standards, and prohibited substances, pH, and specific gravity in urine were studied.

Effect of Milling Protocols on Trueness and Precision of Ceramic Crowns.

Purpose: To investigate the effect of different milling protocols for different ceramic materials on the trueness and precision of milled ceramic crowns.

Materials And Methods: A definitive impression from a patient requiring a ceramic crown was used to fabricate forty glass ceramic crowns (VITABLOCS mark II, Vita Zahnfabrik) milled with wet, hard milling protocol, and 40 zirconia crowns (inCoris TZI, Dentsply, Sirona) milled with dry, soft milling protocol, using a 5-axis milling machine (inLab MC X5; Dentsply Sirona). Trueness and precision for different crown areas were evaluated with a 3D evaluation software (Geomagic Control X, 3D systems).

A novel mixed living high training low intervention and the hematological module of the athlete biological passport.

Exposure to either natural or simulated hypoxia induces hematological adaptations that may affect the parameters of the Athlete Biological Passport (ABP). The aim of the present study was to examine the effect of a novel, mixed hypoxic dose protocol on the likelihood of producing an atypical ABP finding. Ten well-trained middle-distance runners participated in a "live high, train low and high" (LHTLH) altitude training camp for 14 days.

Learning curve of intraoral scanning by prosthodontic residents.

Statement Of Problem: The use of intraoral scanning (IOS) to replace conventional impressions has become popular. However, the learning time required to use these devices effectively is unknown.

Purpose: The purpose of this in vitro study was to investigate the learning rate, plateau, and difficulty level over repetitive IOS among prosthodontic residents.

Surface Roughness of Monolithic and Layered Zirconia Restorations at Different Stages of Finishing and Polishing: An In Vitro Study.

Purpose: To evaluate surface roughness and topography of different zirconia-based restorations at various steps of finishing and polishing.

Materials And Methods: Seventy-five zirconia discs were fabricated and divided into 3 layered and 2 monolithic groups: layered conventional (VM9; Vita), layered pressed (PM9; Vita), layered digital (TriLuxe Forte; Vita), opaque monolithic (Ceramill Zi; Amann Girrbach), and translucent monolithic (Zolid FX; Amann Girrbach). Surface roughness testing (Ra, Rz) and scanning electron microscopy were performed at the glazed, unglazed, finished, polished, super-polished, and super-polished with diamond paste steps.

Comparison of the Accuracy of Fit of Metal, Zirconia, and Lithium Disilicate Crowns Made from Different Manufacturing Techniques.

Purpose: To evaluate the accuracy of fit of metal, lithium disilicate, and zirconia crowns, which were produced using different manufacturing techniques.

Materials And Methods: Ten patients in need of a molar crown were recruited. Eight crowns were fabricated for each patient: 2 zirconia, 3 lithium disilicate (e.

The Effect of Ceramic Type and Background Color on Shade Reproducibility of All-Ceramic Restorations.

Purpose: To investigate the effects of background color on shade reproduction using CAD/CAM zirconia and lithium disilicate ceramics.

Materials And Methods: A plastic tooth was prepared for an all-ceramic crown and scanned. Tooth-shaped light background dies were manufactured.