Bacterial contamination of new dental unit waterlines and efficacy of shock disinfection.

Background: Bacterial contamination of outlet water from dental unit waterlines (DUWLs) may lead to healthcare-associated infection. The aim of this study was to evaluate the contamination of DUWLs from new dental chairs before and after their initial shock disinfection with ICX Renew® and to determine the efficacy of this method of shock disinfection.

Methods: The microbiological quality of water samples obtained from the DUWLs of 17 new dental chairs installed at the University Hospital of Nancy, France, was assessed.

Co-Designing of Preventive Materials Between Dental Students and Primary School Teachers to Promote Oral Health: Impact on Professional Practices for French Dental Students.

Introduction: This paper is aiming to present an experiment involving odontology students, teachers and pupils in elementary grades to investigate the potential benefits of co-design activities to create preventive materials to promote oral health in schools.

Materials And Methods: A total of, 110 fourth-year students, 47 volunteers teachers and 698 pupils in Grades 1 and 2 participated in the study. This work led to the creation and distribution to teachers of appropriate tools on the dental health.

A first step towards the detection of damage processes in endodontic Ni-Ti alloy files, using acoustic emission.

Despite major instrumental developments over the last decade, endodontic files are still not infallible. It is well known that NiTi rotary files can break without any visible sign of deformation. Instrument breakage under combined flexion-torsion loading is still common in clinical practice.

Initial waterline contamination by in newly installed dental chairs.

Unlabelled: Water contamination in dental unit waterlines (DUWLs) is a potential source of healthcare-associated infection during dental care. The aim of this study was to evaluate the microbiological quality of DUWLs water from newly installed dental chairs in a French University Hospital. The microbiological quality of water from 24 new DUWLs initially disinfected by ICX Renew-prior to use of the dental units for patient treatment-was assessed for total culturable aerobic bacteria at 22°C and 36°C, sp.

Influence of endodontic motors on the behaviour of root canal shaping instruments: an in vitro comparative study.

Aims: The endodontic literature reports a lot of comparative study on endodontic instruments, concerning as well their geometry, instrumental dynamics, material, mechanical behavior or heat treatment. However, to our knowledge, no study has focused on the influence of endodontic motors on the shaping abilities of endodontic instruments. Thus, the aim of this study was to analyze the influence of the endodontic motors on root canal shaping instruments.

Distinguishing skill levels with haptic simulation in restorative dentistry: Myth or reality?

Introduction: This study aims to validate that haptic simulator assistance could distinguish skill levels with haptic simulation in restorative dentistry.

Materials And Methods: This work was carried out with 93 first-year, 87 third-year and 44 fifth-year dental students. The promotions of first- and fifth-year dental students made one session to represent the negative and the positive controls, respectively.

Virtual aids and students' performance with haptic simulation in implantology.

Objetives: This study aims to validate that haptic simulator assistance could improve drilling ability in implantology and that the repetition of training session could highlight a learning curve.

Methods: This work was carried out with 88 first-year dental students. After randomization, students were divided into two groups.

Analysis of ergonomic occupational accidents and near misses in a large Belgian university hospital.

Introduction: Health-care organizations are facing a high burden of ergonomic occupational accidents, and prevention is a continuous point of interest. In this manuscript, we describe the characteristics of ergonomic accidents in a large Belgian university hospital and discuss the value of near misses.

Methods: Combining databases, we identified the frequency [number of accidents × 10 hours worked per year], severity (number of days off work × 10 hours worked per year), and profile of the victims of occupational ergonomic accidents (with absence from work) or incidents or near-misses (without absence from work).

Ethical reflections on Covid-19 vaccines.

Objectives: More than 1 year after the start of the Covid-19 pandemic it is becoming increasingly clear that vaccines will prove to be essential in combating this global pandemic. The demand for such vaccines is great (since nearly everyone is a candidate for vaccination) yet supplies are currently limited. This raises clear ethical questions regarding the current and future Covid-19 vaccines.

Ethical issues in managing the COVID-19 pandemic.

The COVID-19 pandemic has had an immense and worldwide impact. In light of future pandemics or subsequent waves of COVID-19 it is crucial to focus on the ethical issues that were and still are raised in this COVID-19 crisis. In this paper, we look at issues that are raised in the testing and tracing of patients with COVID-19.

Contribution of Haptic Simulation to Analogic Training Environment in Restorative Dentistry.

The aim of this study was to evaluate the contribution of virtual reality to the conventional analogic training environment and show the complementarity of conventional techniques and virtual reality in the learning of dental students. All 88 first-year dental students at a dental school in France in early 2019 were randomly assigned to one of two groups: group 1 (n = 45) was assigned to cavity preparations on a haptic simulator (Virteasy) and group 2 (n = 43) was assigned to conventional practical work on plastic analogue teeth (Kavo). Following three training sessions, the students in group 1 took a final exam on the same plastic analogue teeth exercise.

Challenges in turning a great idea into great health policy: the case of integrated care.

Background: In the organization of health care and health care systems, there is an increasing trend towards integrated care. Policy-makers from different countries are creating policies intended to promote cooperation and collaboration between health care providers, while facilitating the integration of different health care services. Hopes are high, as such collaboration and integration of care are believed to save resources and improve quality.

Methodological Approach to the Endodontic Treatment of First Premolars with Three Root Canals: Two Case Reports.

Aim: The aim of this article was to promote a methodology in the endodontic management of complex premolars with multiple root canals Background: The success of endodontic treatment depends on a meticulous clinical and radiographic analysis, the creation of a suitable access cavity and chemical and mechanical preparation, followed by three-dimensional filling of the entire root canal system. Consequently, it is essential to look for the presence of additional root canals to prevent endodontic treatment failure Case description: Two cases are presented. The first case concerned a 50-year-old male patient of North African origin who consulted in the context of a global prosthetic restoration including endodontic treatment of the maxillary left first premolar (tooth no.

Past, present and future of university hospitals.

: Health care systems worldwide are changing and taking new forms. The old, more hierarchically oriented, model with individual institutional and bilateral interactions between primary, secondary, tertiary and quaternary care is being replaced by an integrated and dynamic network model. We aim to look at what role university hospitals will play in this future organization of health care.

Organizing Health Care Networks: Balancing Markets, Government and Civil Society.

Much is changing in health care organization today. A perspective or paradigm that is gaining ever increasing momentum is that of translational, extramural and integrated care. Current research suggests many potential benefits for integrated care and health care networks but the ethical issues are less frequently emphasized.

The patient perspective in health care networks.

Background: Health care organization is entering a new age. Focus is increasingly shifting from individual health care institutions to interorganizational collaboration and health care networks. Much hope is set on such networks which have been argued to improve economic efficiency and quality of care.

In Defence of Moral Pluralism and Compromise in Health Care Networks.

The organisation of health care is rapidly changing. There is a trend to move away from individual health care institutions towards transmural integrated care and interorganizational collaboration in networks. However, within such collaboration and network there is often likely to be a pluralism of values as different health care institutions often have very different values.

Porosity of flowable resin composites is not influenced by applicator tip diameter.

Purpose: To assess the influence of applicator tip diameter on the inclusion of porosities in three different flowable resin composites.

Methods: The initial porosity of three syringes [Filtek Supreme XTE Flowable (XTE), Grandio Flow (GRF), Gradia Direct Flo (GDF)] was determined by 3D tomography. 25 samples per syringe, i.

The role of hospitals in bridging the care continuum: a systematic review of coordination of care and follow-up for adults with chronic conditions.

Background: Multiple studies have investigated the outcome of integrated care programs for chronically ill patients. However, few studies have addressed the specific role hospitals can play in the downstream collaboration for chronic disease management. Our objective here is to provide a comprehensive overview of the role of the hospitals by synthesizing the advantages and disadvantages of hospital interference in the chronic discourse for chronically ill patients found in published empirical studies.

Dynamic thermo-mechanical properties of various flowable resin composites.

Background: This study compared the storage modulus (E'), the loss modulus (E'') and the loss tangent (tan δ) of various flowable resin composites.

Material And Methods: Grandio Flow (GRF), GrandioSo Heavy Flow (GHF), Filtek Supreme XTE (XTE) and Filtek Bulk Fill (BUL) flowable resins and Clinpro Sealant (CLI) ultra-flowable pit and fissure sealant resin were used. 25 samples were tested using a dynamical mechanical thermal analysis system in bending mode.

Full-mouth adhesive rehabilitation in a case of amelogenesis imperfecta: a 5-year follow-up case report.

Amelogenesis imperfecta (AI) is a hereditary disorder caused by mutations of genes primarily involved in the enamel formation. Several different types of AI have been identified, based on the phenotype and on the mode of inheritance. Regardless of the type, the dental treatment tends to be the same, favoring the complete removal of the compromised enamel late in the patient's life.

The ethical and clinical importance of measuring consciousness in continuously sedated patients.

Continuous sedation at the end of life is a practice that has attracted a great deal of attention. An increasing number of guidelines on the proposed correct performance of the practice have been drafted. All of the guidelines stress the importance of using sedation in proportion to the severity of the patient's symptoms, thus to reduce the patient's consciousness no more than is absolutely necessary.

Mathematical method to build an empirical model for inhaled anesthetic agent wash-in.

Background: The wide range of fresh gas flow - vaporizer setting (FGF - FD) combinations used by different anesthesiologists during the wash-in period of inhaled anesthetics indicates that the selection of FGF and FD is based on habit and personal experience. An empirical model could rationalize FGF - FD selection during wash-in.

Methods: During model derivation, 50 ASA PS I-II patients received desflurane in O2 with an ADU® anesthesia machine with a random combination of a fixed FGF - FD setting.

The performance of compartmental and physiologically based recirculatory pharmacokinetic models for propofol: a comparison using bolus, continuous, and target-controlled infusion data.

Background: With the growing use of pharmacokinetic (PK)-driven drug delivery and/or drug advisory displays, identifying the PK model that best characterizes propofol plasma concentration (Cp) across a variety of dosing conditions would be useful. We tested the accuracy of 3 compartmental models and 1 physiologically based recirculatory PK model for propofol to predict the time course of propofol Cp using concentration-time data originated from studies that used different infusion schemes.

Methods: Three compartmental PK models for propofol, called the "Marsh," the "Schnider," and the "Schüttler" models, and 1 physiologically based recirculatory model called the "Upton" model, were used to simulate the time course of propofol Cp.

Early phase pharmacokinetics but not pharmacodynamics are influenced by propofol infusion rate.

Background: Conventional compartmental pharmacokinetic models wrongly assume instantaneous drug mixing in the central compartment, resulting in a flawed prediction of drug disposition for the first minutes, and the flaw affects pharmacodynamic modeling. This study examined the influence of the administration rate and other covariates on early phase kinetics and dynamics of propofol by using the enlarged structural pharmacokinetic model.

Methods: Fifty patients were randomly assigned to one of five groups to receive 1.