Evaluation of clinical performance and survival rate of Straumann dental implants in Saudi Population based on cross-sectional study.

Risk indicators of peri-implantitis is still contradictory and somehow unclear in present literature therefore efforts should be done for better understanding of the exact etiology of peri-implant disease progression. The present study aimed to assess risk indicators associated with peri-implantitis by observing the changes in several periodontal parameters after implant placement. This cross-sectional study included 213 female and 271 male patients aged 26-87 years, who received 484 titanium implants (Straumann, Switzerland) at King Saud University's Dental College, Saudi Arabia.

Fracture Strength of Interim CAD/CAM and Conventional Partial Fixed Dental Prostheses.

Purpose:  To compare the fracture strength of three-unit provisional partial fixed dental prostheses (FDPs) fabricated by an indirect-direct technique from poly(methylmethacrylate) (PMMA) through digital and conventional workflows, and FDPs fabricated by a direct technique using Bisacryl (BisA) and externally reinforced BisA.

Materials And Methods:  Forty partially edentulous typodonts with a missing mandibular left first molar and standard preparations on mandibular left second premolar and molar were used to fabricate three-unit provisional FDPs. Two materials and two techniques were used to fabricate a total of forty provisional FDPs: (1) BisA; (2) BisA reinforced with glass fiber strips [BisA-GFR]; (3) conventionally fabricated PMMA shell relined with PMMA [C-PMMA]; (4) CAD/CAM fabricated PMMA shell relined with PMMA [CAD/CAM-PMMA].

Rehabilitating simulated worn dentition by using a complete digital workflow and five anatomic guidelines.

This report describes the rehabilitation of worn dentition by using a complete digital workflow on a nonhinged simulated patient. A dentiform was used to represent an individual with loss of occlusal vertical dimension. Interim restorations were designed following the simulated patient's midline, interpupillary line, and ala-tragus line and a defined central incisal edge position, posterior maxillary teeth central groove, and buccal cusp position of posterior maxillary teeth.

Audience and Presenter Comparison of Live Web-Based Lectures and Traditional Classroom Lectures During the COVID-19 Pandemic.

Purpose: The purpose of the study was to assess participants' and presenters' perceptions of a live web-based lecture series in comparison to traditional in-person lectures.

Materials And Methods: A virtual lecture series was organized by the---from March 25th until June 3rd of 2020. Twenty-five postgraduate prosthodontics programs and 81 presenters participated.

Damage sensitivity of dental zirconias to simulated occlusal contact.

Objective: Mechanical damages can occur from dental restoration processing and fitting, or while it is in-service. This study evaluates the damage sensitivity of translucent zirconia (5Y-PSZ) relative to conventional 3Y-PSZ following mouth-motion simulations at various loads.

Methods: 5Y-PSZ and 3Y-PSZ discs were adhesively bonded to a dentin-like substrate and divided into groups according to the load (50 N or 200 N) and number of cycles (up to 10) used in the chewing simulation.

Effect of zirconia etching solution on the shear bond strength between zirconia and resin cement.

Statement Of Problem: The bond between resin cement and zirconia is essential to the long-term retention of a zirconia crown. However, it is unclear if the existing methods provide a long-term bond between resin cement and zirconia.

Purpose: The purpose of this in vitro study was to evaluate the effects of a zirconia etching solution on the shear bond strength between zirconia and resin cement.

Comparative Analysis of Biofilm Formation on Materials Used for the Fabrication of Implant-Supported Prostheses.

The purpose of this study was to compare biofilm formation on materials used for the fabrication of implant-supported dental prostheses. Twenty discs (D=15 mm, H=3 mm) were fabricated from one of the following restorative materials: yttria tetragonal zirconia polycrystal (Y-TZP); commercially pure titanium (CP-Ti); or heat-cured polymethyl methacrylate (PMMA). Specimens were polished following standard protocols.

AAID White Paper: Management of the Dental Implant Patient During the COVID-19 Pandemic and Beyond.

The scientific community's understanding of how the SARS-CoV-2 virus is transmitted and how to best mitigate its spread is improving daily. To help protect patients from acquiring COVID-19 from a dental office nosocomial infection, many state or local governments have classified dental treatments as "nonessential" and have paused routine dental care. Dentists have been instructed to perform only procedures designated as emergencies.

Neutrophil Extracellular Traps (NETs): An unexplored territory in renal pathobiology, a pilot computational study.

In the age of modern medicine and artificial intelligence, image analysis and machine learning have revolutionized diagnostic pathology, facilitating the development of computer aided diagnostics (CADs) which circumvent prevalent diagnostic challenges. Although CADs will expedite and improve the precision of clinical workflow, their prognostic potential, when paired with clinical outcome data, remains indeterminate. In high impact renal diseases, such as diabetic nephropathy and lupus nephritis (LN), progression often occurs rapidly and without immediate detection, due to the subtlety of structural changes in transient disease states.

Pain Sensitivity Modifies Risk of Injury-Related Temporomandibular Disorder.

This study evaluates contributions of jaw injury and experimental pain sensitivity to risk of developing painful temporomandibular disorder (TMD). Data were from the Orofacial Pain: Prospective Evaluation and Risk Assessment (OPPERA) nested case-control study of incident painful TMD. Injury and subsequent onset of painful TMD were monitored prospectively for ≤5 y in a community-based sample of 409 US adults who did not have TMD when enrolled.

Assessment of Teeth Prepared by Senior Dental Students for CAD/CAM Restorations.

The aim of this study was to evaluate teeth prepared for computer-aided design/computer-aided manufacturing (CAD/CAM) restorations by senior dental students using recently developed rubrics. The rubrics used evaluation criteria based on four factors: retention or resistance form; marginal or internal adaption or manufacturing process; biology, esthetics, or durability of restorative material; and intraoral scanner impression. In academic year 2018-19, four faculty members used the rubrics to assess 111 first maxillary right premolars (tooth no.

Enhancing Skin Grafts with Primed Gingival Mesenchymal Stromal Cells.

Injuries of the largest anatomical organ, the skin, resulting from trauma, burns, or inflammatory disorders can lead to devastating health effects. Modern approaches to re-establishing critical barrier functions have evolved from simple biomaterial dressings to sophisticated skin grafts. A report by Magne et al.

Psychometric properties of an instrument to assess critical thinking disposition and metacognition in dental students.

Objective: The purpose of this study was to determine the psychometric properties of instruments designed to assess the critical thinking domains of disposition and metacognition in a dental student population.

Methods: Two instruments originally developed to assess disposition and metacognition domains in undergraduate student populations were administered to dental students from 3 classes in the Spring of 2019. The overall response rate was 73%.

Adolescent and Young Adult Oral Maxillofacial Tumors: A Single-Institution Case Series and Literature Review.

Adolescent and young adult (AYA) oral maxillofacial tumors are rare and account for ∼12% of all AYA cancers. Due to the low incidence of these malignancies, diagnostic considerations, therapeutic approaches, and factors affecting prognosis have been difficult to characterize. Given the anatomic structures located within the head and neck, patients are at risk for treatment-related morbidity that may adversely impact their quality of life.

Photodynamic and peptide-based strategy to inhibit Gram-positive bacterial biofilm formation.

The self-produced extracellular polymeric matrix of biofilms renders them difficult to eliminate once they are established. This makes the inhibition of biofilm formation key to successful treatment of biofilm infection. Antimicrobial photodynamic therapy (aPDT) and antimicrobial peptides offer a new approach as antibiofilm strategies.

Acquisition of Skills in Operative Dentistry Following a Contemporary Technique Skills Course: A Retrospective Study.

The aim of this study was to evaluate the impact of a contemporary preclinical technique skills course on early dental student performance in a preclinical operative course. Ivorine teeth prepared for Class I resin restorations by the Classes of 2020 and 2021 in one U.S.

Agreement Between Faculty and %Comparison for Preparation Depth Assessment in a Dental Technique Skills Course.

The aim of this retrospective study was to assess agreement between faculty and virtual assessment software in depth evaluation of rounded rectangular preparations in non-anatomical teeth prepared by second-year dental students. A total of 184 non-anatomical ivorine mandibular first molars prepared by second-year students were retrospectively evaluated in 2018. Each tooth was prepared to a depth of 1.

A Systematic Review of Critical Thinking Instruments for Use in Dental Education.

Critical thinking is widely recognized as an essential competency in dental education, but there is little agreement on how it should be assessed. The aim of this systematic review was to determine the availability of instruments that could be used to measure critical thinking in dental students and to evaluate psychometric evidence to support their use. In January 2017, an electronic search of both the medical and education literature was performed on nine databases.

Impact of Occlusal Intercuspal Angulation on the Quality of CAD/CAM Lithium Disilicate Crowns.

Purpose: Modification of intercuspal angulation (ICA) influences the amount of tooth structure removal, which may impact the retention and resistance form of the preparation. This study evaluated the impact of ICA on the marginal gap of CAD/CAM crowns and the influence that tooth structure removal, caused by variation of ICA, has on the resistance and retention form of the preparation.

Materials And Methods: Sixty ivorine molars were manufactured with various ICAs (100°, 110°, 120°, 140°, 160°, and 180°; 10 per group).

Effect of Fabrication Technique on the Marginal Discrepancy and Resistance of Lithium Disilicate Crowns: An In Vitro Study.

Purpose: To evaluate the impact of fabrication technique on the marginal fit and resistance of lithium disilicate crowns.

Materials And Methods: Twelve ivorine molars were prepared to receive lithium disilicate crowns. The preparations were digitally recorded using an intraoral scanner, and the crowns were designed following the anatomy of an unprepared tooth using a design software.

Periodontal biotype modification using a volume-stable collagen matrix and autogenous subepithelial connective tissue graft for the treatment of gingival recession: a case series.

Purpose: The purpose of this study was to propose a technique for periodontal biotype modification through thickening of the entire facial aspect using a volume-stable collagen matrix and autogenous subepithelial connective tissue graft (CTG) for the treatment of gingival recession.

Methods: Four systemically healthy patients showing Miller class I or class II gingival recession in the mandibular incisor area were included in this study. Full-mouth scaling and root planing procedures were performed at least 4 weeks prior to periodontal plastic surgery.