1,256 results match your criteria dam isolation


Management of Intracanal Separated File Fragment in a Four-Rooted Mandibular Third Molar.

Case Rep Dent 2021 30;2021:5547062. Epub 2021 Jun 30.

Department of Conservative Dentistry and Endodontics, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India.

The success of endodontic therapy is attributed to complete arbitration of the bound entities concealed within the complexity and absolute disinfection of the root canal system, thus, deeming it mandatory to effectively negotiate and overcome the challenges posed by obstruction, either iatrogenic or anatomic. To achieve this, considerable depth of knowledge and expertise with reference to variations in root canal morphology and clinical mishap management is substantially as important as developing fine observation skills in conjunction with an appropriate armamentarium and a keen sense of determination, thereby enhancing one's clinical acumen by several folds. In the present case, following rubber dam isolation, the temporary restoration was removed, and the remaining carious dentin was excavated. Read More

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Association between cervical dysplasia and female genital schistosomiasis diagnosed by genital PCR in Zambian women.

BMC Infect Dis 2021 Jul 17;21(1):691. Epub 2021 Jul 17.

Department of Clinical Research, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK.

Background: Female genital schistosomiasis (FGS) is a neglected tropical gynaecological disease that affects millions of women in sub-Saharan Africa (SSA). FGS is caused by Schistosoma haematobium, a parasitic carcinogen involved in the pathogenesis of squamous cell carcinoma of the bladder. Cervical cancer incidence and mortality are highest in SSA, where pre-cancerous cervical dysplasia is often detected on screening with visual inspection with acetic acid (VIA). Read More

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sp. nov., an acidophilic, metal-resistant sulfate-reducing bacterium from acid mine drainage.

Int J Syst Evol Microbiol 2021 Jul;71(7)

Laboratory of Molecular Biology and Biochemistry, Tomsk State University, Tomsk 634050, Russia.

A novel, spore-forming, acidophilic and metal-resistant sulfate-reducing bacterium, strain OL, was isolated from a microbial mat in a tailing dam at a gold ore mining site. Cells were slightly curved immotile rods, 0.5 µm in diameter and 2. Read More

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An internet-mediated investigation into the reported clinical use of rubber dam isolation by GDPs in the UK - part 2: clinical applications.

Br Dent J 2021 Jul 8. Epub 2021 Jul 8.

Honorary Professor, Centre for Professional Practice, Medway Campus, University of Kent, Medway Maritime, Kent, ME4 4AG, UK.

Aims To investigate the reported clinical applications of rubber dam isolation by UK general dental practitioners (GDPs) using an internet-mediated approach.Methods The data were collected in 2019, using an online (SurveyMonkey) questionnaire that was distributed to GDPs in a private group on Facebook. The percentages are based on the number of respondents who answered each question. Read More

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What makes Dutch youth comply with preventive COVID-19 measures? An explorative study.

J Community Psychol 2021 Jul 7. Epub 2021 Jul 7.

Research Institute of Child Development and Education, University of Amsterdam, Amsterdam, The Netherlands.

The measures to contain the spread of COVID-19 are challenging for youth, especially the social isolation measures. These measures are antagonistic to healthy youth development, which requires sufficient social contact with peers and adults. This explorative study examined what factors are associated with adherence to COVID-19 measures in a sample of Dutch youth (N = 263; 79. Read More

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Solar energy and regional coordination as a feasible alternative to large hydropower in Southeast Asia.

Nat Commun 2021 07 6;12(1):4159. Epub 2021 Jul 6.

Pillar of Engineering Systems and Design, Singapore University of Technology and Design, Singapore, Singapore.

Strategic dam planning and the deployment of decentralized renewable technologies are two elements of the same problem, yet normally addressed in isolation. Here, we show that an integrated view of the power system capacity expansion problem could have transformative effects for Southeast Asia's hydropower plans. We demonstrate that Thailand, Laos, and Cambodia have tangible opportunities for meeting projected electricity demand and CO emission targets with less hydropower than currently planned-options range from halting the construction of all dams in the Lower Mekong to building 82% of the planned ones. Read More

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Comparative Study of Clinical and Ultrasound Parameters for Defining a Difficult Airway in Patients with Obesity.

Obes Surg 2021 Jul 5. Epub 2021 Jul 5.

São Domingos Hospital, São Luís, Brazil.

Introduction: Patients with obesity have anatomical changes due to increased adipose tissue that negatively affect airway accessibility, making it difficult to establish an advanced airway through orotracheal intubation. This article aims to evaluate the correlation of clinical and sonographic parameters as predictors of difficult airway management (DAM) in patients with obesity and to establish the predictive value of the skin-epiglottis distance as an indicator of a probable DAM.

Methods: This is an observational, prospective study of 100 patients with obesity who underwent bariatric surgery over a 12-month period. Read More

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Printing Microbial Dark Matter: Using Single Cell Dispensing and Genomics to Investigate the Patescibacteria/Candidate Phyla Radiation.

Front Microbiol 2021 16;12:635506. Epub 2021 Jun 16.

Institute for Biological Interfaces 5, Karlsruhe Institute of Technology, Karlsruhe, Germany.

As of today, the majority of environmental microorganisms remain uncultured. They are therefore referred to as "microbial dark matter." In the recent past, cultivation-independent methods like single-cell genomics (SCG) enabled the discovery of many previously unknown microorganisms, among them the Patescibacteria/Candidate Phyla Radiation (CPR). Read More

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An internet-mediated investigation into the reported clinical use of rubber dam isolation by GDPs in the UK - part 1: factors influencing rubber dam use.

Br Dent J 2021 Jun 25. Epub 2021 Jun 25.

Honorary Professor, Centre for Professional Practice, Medway Campus, University of Kent, Medway Maritime, Kent, ME4 4AG, UK.

Aims To investigate the reported use of rubber dam isolation by UK general dental practitioners (GDPs), utilising an internet-mediated (SurveyMonkey) questionnaire reporting the demographic profile of respondents and the attitudes and factors influencing rubber dam use.Methods A piloted questionnaire was distributed to a random sample of GDPs in a private Facebook group, investigating respondent demographics, clinical applications, and attitudes towards and factors influencing rubber dam use. The data were analysed using descriptive statistics along with chi-squared and pairwise Mann-Whitney U tests. Read More

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Effect of pre-cooling agent on intensity of pricking pain at intraoral injection site in adults: An experimental study.

J Pak Med Assoc 2021 May;71(5):1379-1383

Department of Operative Dentistry, Dr. Ishrat ul Ebad Khan Institute of Oral Health Sciences, Karachi, Pakistan.

Objective: To determine the effect of pre-cooling agent on the intensity of pricking pain at the intraoral injection site in adult patients.

Methods: The in-vivo interventional study was conducted at the Department of Operative Dentistry, Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi, from September 2018 to August 2019, and comprised adult patients of either gender. Read More

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Digital scan over dental dam: workflow for successful clinical outcome.

Quintessence Int 2021 Jul;52(8):660-665

Although the use of intraoral scanners is becoming more popular, dental professionals are still presented with the challenge of obtaining precise imaging of the preparation margins. Deep preparation margins, saliva contamination, or bleeding during the scanning procedures can impair the accuracy of the digital scan. Dental dam placement can significantly improve the quality and efficiency of the digital scan, while simultaneously providing a clean restorative field and serving as a barrier to the spread of infections for the protection of dental professionals. Read More

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Comparison of Fissure Sealant Chair Time and Patients' Preference Using Three Different Isolation Techniques.

Children (Basel) 2021 May 25;8(6). Epub 2021 May 25.

Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia.

This randomized clinical trial aimed to evaluate the patient's preference and chair time needed during pit and fissure sealant placement under three isolation techniques (Isolite system, rubber dam isolation, and cotton roll isolation). Participants, aged 6-15 years and requiring four sealants on the first or second permanent molars, attending the pediatric dental clinics at King Saud University in Saudi Arabia were enrolled according to the inclusion criteria. Each participant received sealants on three random first or second permanent molars using three isolation techniques. Read More

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Protocol for Indirect Restoration Intraoral Scanning Under Dental Dam Isolation: A Dental Technique.

J Prosthodont 2021 May 19. Epub 2021 May 19.

Department of Restorative Dentistry, School of Dentistry, International University of Catalunya, Barcelona, Spain.

This paper aims to describe an intraoral scanning protocol for indirect restorations utilizing dental dam isolation. This technique consists of the initial scan of both arches and their occlusion. Then, after necessary dental preparation is performed under isolation with a dental dam, intraoral scanning of preparations is performed, maintaining the dental dam in place. Read More

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Digital scanning under rubber dam: An innovative method for making definitive impressions in fixed prosthodontics.

J Esthet Restor Dent 2021 May 18. Epub 2021 May 18.

Private practice, Barcelona, Spain; and Chairman and Professor, Department of Restorative Dentistry, School of Dentistry, International University of Catalunya, Barcelona, Spain.

Objective: To provide a comprehensive protocol for final impressions making under rubber dam isolation by using an intraoral scanner.

Clinical Consideration: Impression making after tooth preparation with rubber dam isolation are impossible with conventional physical impressions, which are not with intraoral scanners. Digital technologies have disrupted dentistry in the last decades, bringing new, straightforward, and more time-efficient protocols for dental practice. Read More

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Rubber dam isolation for restorative treatment in dental patients.

Cochrane Database Syst Rev 2021 05 17;5:CD009858. Epub 2021 May 17.

State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China.

Background: The effective control of moisture and microbes is necessary for the success of restoration procedures. The rubber dam, as an isolation method, has been widely used in dental restorative treatments. The effects of rubber dam usage on the longevity and quality of dental restorations still require evidence-based discussion. Read More

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Resin Bonding of a Lithium-Disilicate Crown Using a Ligated Rubber Dam: A 2-Year Case Report.

Compend Contin Educ Dent 2021 Apr;42(4):188-191

Professor, Department of Restorative Sciences, Dental College of Georgia, Augusta University, Augusta, Georgia.

Enduring glass-ceramic restorations greatly depend on the quality of adhesion of the crown to enamel and dentin. Proper isolation is vital to the success of bonded ceramic restorations. The rubber dam has long been considered the primary method of preventing contamination of the operating field, a crucial requisite for adhesion. Read More

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DETECTION OF DEER ATADENOVIRUS A DNA IN DAM AND OFFSPRING PAIRS OF ROCKY MOUNTAIN MULE DEER (ODOCOILEUS HEMIONUS HEMIONUS) AND ROCKY MOUNTAIN ELK (CERVUS CANADENSIS NELSONI).

J Wildl Dis 2021 04;57(2):313-320

Wyoming State Veterinary Laboratory, University of Wyoming, 1174 Snowy Range Road, Laramie, Wyoming 82070, USA.

Adenovirus hemorrhagic disease affects primarily mule deer (Odocoileus hemionus), white-tailed deer (Odocoileus virginianus), Rocky Mountain elk (Cervus canadensis nelsoni), and moose (Alces alces) in their first year of life. The method by which the causative virus, Deer atadenovirus A, is maintained in the environment and transmitted to neonates is unknown. In this study, we investigated the potential transmission of the virus from dam to offspring in Rocky Mountain mule deer (Odocoileus hemionus hemionus) and elk in western Wyoming, US. Read More

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Four new species of Serranochromis (Teleostei: Cichlidae) from the Cuanza and Okavango river systems in Angola, including a preliminary key for the genus.

Zootaxa 2021 Jan 13;4908(1):zootaxa.4908.1.4. Epub 2021 Jan 13.

Penn State University, 432 Forest Resources Building, University Park, Pennsylvania 16802, USA., 2Honorary Research Associate, South African Institute for Aquatic Biodiversity, Makhanda, RSA. South African Institute for Aquatic Biodiversity, Private Bag 1015, Makhanda, 6140, RSA.

The present study describes Serranochromis alvum n. sp., Serranochromis swartzi n. Read More

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January 2021

Associations between antimicrobial susceptibility/resistance of Neisseria gonorrhoeae isolates in European Union/European Economic Area and patients' gender, sexual orientation and anatomical site of infection, 2009-2016.

BMC Infect Dis 2021 Mar 18;21(1):273. Epub 2021 Mar 18.

WHO Collaborating Centre for Gonorrhoea and other STIs, National Reference Laboratory for Sexually Transmitted Infections, Department of Laboratory Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.

Background: The emergence and spread of antimicrobial resistance (AMR) in Neisseria gonorrhoeae, nationally and internationally, is a serious threat to the management and control of gonorrhoea. Limited and conflicting data regarding the epidemiological drivers of gonococcal AMR internationally have been published. We examined the antimicrobial susceptibility/resistance of gonococcal isolates (n = 15,803) collected across 27 European Union/European Economic Area (EU/EEA) countries in 2009-2016, in conjunction to epidemiological and clinical data of the corresponding patients, to elucidate associations between antimicrobial susceptibility/resistance and patients' gender, sexual orientation and anatomical site of infection. Read More

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Clinical performance of high-viscosity glass ionomer and resin composite on minimally invasive occlusal restorations performed without rubber-dam isolation: a two-year randomised split-mouth study.

Clin Oral Investig 2021 Mar 8. Epub 2021 Mar 8.

Department of Restorative Dentistry, Faculty of Dentistry, Izmir Katip Celebi University, Izmir, Turkey.

Objective: The aim of this clinical trial was to evaluate the 2-year clinical performances of high-viscosity glass ionomer and nanohybrid resin composite restorations performed without rubber dam isolation.

Materials And Methods: Occlusal carious lesions on the right and left mandibular second molars of 56 patients (26 female, 30 male patients) were restored in a split-mouth design. High-viscosity glass ionomer (Hv-GIC) (Equia, GC) and nanohybrid resin composite (GrandioSO, Voco) were used as restorative materials. Read More

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Performance of prediction models for short-term outcome in COVID-19 patients in the emergency department: a retrospective study.

Ann Med 2021 12;53(1):402-409

Department of Internal Medicine, Division of General Internal Medicine, Section Acute Medicine, Maastricht University Medical Center, Maastricht, The Netherlands.

Introduction: Coronavirus disease 2019 (COVID-19) has a high burden on the healthcare system. Prediction models may assist in triaging patients. We aimed to assess the value of several prediction models in COVID-19 patients in the emergency department (ED). Read More

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December 2021

Obsessive-Compulsive Symptoms and Other Symptoms of the At-risk Mental State for Psychosis: A Network Perspective.

Schizophr Bull 2021 Jul;47(4):1018-1028

Department of Psychology, Psychological Methods, University of Amsterdam, Amsterdam, the Netherlands.

Background: The high prevalence of obsessive-compulsive symptoms (OCS) among subjects at Ultra-High Risk (UHR) for psychosis is well documented. However, the network structure spanning the relations between OCS and symptoms of the at risk mental state for psychosis as assessed with the Comprehensive Assessment of At Risk Mental States (CAARMS) has not yet been investigated. This article aimed to use a network approach to investigate the associations between OCS and CAARMS symptoms in a large sample of individuals with different levels of risk for psychosis. Read More

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Systemic coccidioidomycosis in a llama cria native to Missouri.

J Vet Diagn Invest 2021 May 15;33(3):587-590. Epub 2021 Feb 15.

Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia, MO.

A 3-mo-old male llama was examined because of a 4-wk history of lethargy and ill thrift. Clinical examination revealed subcutaneous masses in the left prescapular and right inguinal regions, mild ataxia, a slight head tilt to the right, and right ear droop. The cria died before clinical workup was complete. Read More

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Impact of COVID-19 on Pakistani dentists: a nationwide cross sectional study.

BMC Oral Health 2021 02 10;21(1):59. Epub 2021 Feb 10.

Operative Dentistry Department, Islamabad Medical and Dental College, Main Murree Road, Bharakahu, Islamabad, Pakistan.

Background: The COVID-19 outbreak which developed into a public health crisis has raised concerns regarding infection control among health care workers particularly dentists all over the world. The aim of this survey was to assess awareness, fear and compliance with practice modification according to CDC guidelines during COVID-19 pandemic among Pakistani dentists.

Methods: A cross-sectional study was conducted using an online survey questionnaire. Read More

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February 2021

Genome analysis of Salmonella enterica serovar Typhimurium bacteriophage L, indicator for StySA (StyLT2III) restriction-modification system action.

G3 (Bethesda) 2021 01;11(1)

Research Department, New England Biolabs, Ipswich, MA 01938-2723, USA.

Bacteriophage L, a P22-like phage of Salmonella enterica sv Typhimurium LT2, was important for definition of mosaic organization of the lambdoid phage family and for characterization of restriction-modification systems of Salmonella. We report the complete genome sequences of bacteriophage L cI-40 13-am43 and L cII-101; the deduced sequence of wildtype L is 40,633 bp long with a 47.5% GC content. Read More

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January 2021

Impact of preweaning stress on long-term neurobehavioral outcomes in Sprague-Dawley rats: Differential effects of barren cage rearing, pup isolation, and the combination.

Neurotoxicol Teratol 2021 Mar-Apr;84:106956. Epub 2021 Jan 29.

Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA; Division of Neurology, Cincinnati Children's Research Foundation, Cincinnati, OH, USA. Electronic address:

Two developmental stressors were compared in preweaning rats exposed to either one stressor or both. Stressors were barren cage rearing or maternal separation (pup isolation). 40 gravid Sprague-Dawley CD/IGS rats were randomly assigned to two cage conditions: standard (Std) cage or barren cage (Bar), 20 litters/condition throughout gestation and lactation. Read More

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January 2021

Preprocedural Pool Testing Strategy for Dentistry during the COVID-19 Pandemic.

Authors:
F Umer A Arif

JDR Clin Trans Res 2021 04 21;6(2):139-144. Epub 2021 Jan 21.

Department of Surgery, Aga Khan University Hospital, Karachi, Pakistan.

Introduction: Aerosol-generating procedures (AGPs) put the dental health care professionals (DHCPs) at a greater risk for acquiring severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. In late June 2020, the Centers for Disease Control and Prevention advised elective dental procedures provision to asymptomatic patients while mandating strict infection control protocol and suggested the use of preprocedural testing as an adjunct. A cost-effective method for mass preprocedural testing is pool testing, which has specificity and sensitivity similar to polymerase chain reaction. Read More

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Koala Retrovirus in Northern Australia Shows a Mixture of Stable Endogenization and Exogenous Lineage Diversification within Fragmented Koala Populations.

J Virol 2021 Jan 20. Epub 2021 Jan 20.

GeneCology Research Centre, University of the Sunshine Coast, Sippy Downs, Queensland, Australia

The koala population in northern Australia has become increasingly fragmented due to natural and man-made barriers and interventions. This situation has created a unique opportunity to study both endogenous and exogenous koala retrovirus (KoRV). To determine the impact that population isolation has had on KoRV diversity in Queensland, 272 koalas from six fragmented koala populations were profiled for their KoRV provirus across two natural biogeographical barriers (the St Lawrence Gap and the Brisbane Valley Barrier), one man-made geographical barrier (the city of Brisbane) and two translocation events (the single movement of koalas to an island and the repeated movement of koalas into a koala sanctuary). Read More

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January 2021

The Impacts of Dam Construction and Removal on the Genetics of Recovering Steelhead () Populations across the Elwha River Watershed.

Genes (Basel) 2021 01 13;12(1). Epub 2021 Jan 13.

Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 2725 Montlake Boulevard East, Seattle, WA 98112, USA.

Dam construction and longitudinal river habitat fragmentation disrupt important life histories and movement of aquatic species. This is especially true for that exhibits both migratory (steelhead) and non-migratory (resident rainbow) forms. While the negative effects of dams on salmonids have been extensively documented, few studies have had the opportunity to compare population genetic diversity and structure prior to and following dam removal. Read More

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January 2021

Acid mine drainage at the Bahia Gold Belt (Brazil): microbial isolation and characterization.

Environ Monit Assess 2021 Jan 13;193(2):60. Epub 2021 Jan 13.

Department of Materials Science and Technology, Federal University of Bahia, Rua Aristides Novis, n.2, Salvador, BA, 40210-630, Brazil.

Acid mine drainage occurs due to the chemical and microbiological oxidation of sulfide minerals and can be a source of potentially toxic elements contamination of groundwater and surface water. The objective of this study was to identify microorganisms involved in sulfide oxidation in the tailings of a Bahia Gold Belt mine (Brazil). Samples of solids and water were collected at the mine tailings dam and characterized. Read More

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January 2021