ABSTRACT
Why we only infrequently detect or report two or more respiratory viruses co-infecting an adult host is poorly understood. We report a rare case where influenza B and SARS-CoV-2 caused viral pneumonia in a 74-year-old man diagnosed during the UK winter epidemic/pandemic for these organisms and discuss concepts of co-infection.
Subject(s)
Coinfection , Coronavirus Infections , Influenza B virus , Influenza, Human , Pandemics , Pneumonia, Viral , Aged , Betacoronavirus , COVID-19 , Community-Acquired Infections , Continuous Positive Airway Pressure , Humans , Lung/diagnostic imaging , Lung/pathology , Male , SARS-CoV-2ABSTRACT
Objectives: Accurate impressions are essential in fabricating dental restorations and fixed dental prostheses. During the last decade, digital impression systems have improved substantially. The objective of this narrative review is to discuss the recent research on intraoral scanners with regards to it's technology, accuracy and applications for fabrication of dental restorations and fixed dental prostheses. Materials and methods: A search strategy was performed in MEDLINE/PubMed, Scopus and Google Scholar with keywords - intraoral scanners, accuracy, applications, dentistry. Results: 395 articles were retrieved. After hand search a total of 415 articles were identified. Ultimately, 30 articles were selected and summarized and discussed as they met the selection criteria. Conclusion: Within the scope of this review, reported literature showed that digital intra-oral impressions have presented an achievement in the dental market as they reduce time required and simplify the clinical procedures with better communication with the technician and the patient. The current intraoral scanners (IOS) are sufficiently accurate for capturing impressions for fabrication of prosthetic restorations (inlays/onlays, copings and frameworks, single crowns and fixed partial dentures) on both natural teeth and implants; in addition, they can be used for smile design, and to fabricate posts and cores, removable partial prostheses, obturators, orthodontic aligners and custom made devices. The use of IOS in long-span restorations with natural teeth or implants is still a challenge.
ABSTRACT
Introduction: The demand for metal free restorations may it be fixed or removable has increased manifold in the recent past. BioHPP is one such material that has been introduced recently in the field of prosthodontics. Aim: The aim of this narrative review is to discuss the properties of BioHPP (Biocompatible High Performance Polymer) material and its applications in the field of prosthodontics Materials and Methods: A search strategy was performed on PubMed and Google Scholar with key words: Modified PEEK, BioHPP, Prosthodontic applications. Results: Seventy nine articles were retrieved. After hand search and along with cross reference a total of 84 articles were identified. Ultimately 18 articles were selected and discussed as they met the selection criteria. Conclusion: Within the scope of this review, reported literature showed that BioHPP has proven to be a boon to the field of prosthodontics as a result of its excellent biocompatibility as well as mechanical properties. BioHPP offers a wide range of applications may it be in removable or fixed prosthodontics. With an increase in the number of clinical trials and long term follow up studies, BioHPP might prove to be a material of choice for a variety of prosthodontic applications.
