Abstract
The authors conducted a study to determine the validity of two commercially available in-office dental unit waterline test kits compared to the gold standard, R2A agar. Samples were collected from the air/water syringes of dental units and cultured on HPC Samplers, Petrifilm AC Plates, and R2A agar...
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PMID: 21121503
PDF is available here.
Abstract
The use of magnification devices in endodontics is becoming more and more common, with the aim of improving the quality of treatment. The common magnification systems used in modern endodontics are the surgical operation microscope, fiber-optic endoscope, and surgical loupes. The benefits of using ma...
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PMID: 21485416
PDF is available here.
Abstract
Manufacturers of dental units have responded positively to the challenge from the American Dental Association (ADA) and the subsequent guidelines issued by the Centers for Disease Control and Prevention (CDC) to deliver patient treatment water that is at least as pure as drinking water. Dental units...
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PMID: 20737988
PDF is available here.
Abstract
A significant problem with most field dental units is that their suction is too weak to effectively remove debris from the mouth. The purpose of this study was to determine the minimum clinically acceptable suction level for routine dentistry. A vacuum pump was connected to a high-volume dental evac...
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PMID: 20446505
PDF is available here.
Abstract
135 (69%) samples were positives by the morphological study with morpholypical diversity. The predominant morphotype was the monopodial (39.2%). 18 strains of Acanthamoeba spp. were detected in DUW (13.%) and three strains in tap water (10%). The amplification of 18S rDNA gene of these strains of Ac...
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PMID: 20387741
PDF is available here.
Abstract
The aim of this study was to evaluate the effectiveness of manual and rotary instrumentation techniques for removing root fillings after different storage times. Twenty-four canals from palatal roots of human maxillary molars were instrumented and filled with gutta-percha and zinc-oxide eugenol-base...
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PMID: 20640362
PDF is available here.
Abstract
This article describes a simple technique for positioning an intraoral x-ray sensor in patients who are undergoing procedures such as endodontic treatment or post fitting for a crown. By placing a wooden tongue depressor and sensor inside an infection control barrier, the patient is able to hold the...
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PMID: 20591766
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Abstract
A cross-sectional study was carried out to assess standard precaution practices among dental personnel and to investigate microbial counts in indoor air samples collected from a hospital dental clinic before and during dental works.
Thirty dental personnel who voluntarily participated were interview...
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PMID: 20232568
PDF is available here.
Abstract
The prevalence of work-related musculoskeletal disorders in practising oral hygienists in South Africa appears to be similar to that in developed countries. Significant determinants of musculoskeletal disorders may be immobile operator stools, poorly adjustable patient chairs and excessive hand-scal...
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PMID: 20411834
PDF is available here.
Abstract
Temporomandibular disorders (TMD) is a joint term that encompasses a number of clinical symptoms that involve the teeth, masticatory musculature and temporomandibular joints (TMJ). They are a frequent cause of orofacial medical conditions. The aetiology of disorders is complex and individual etiolog...
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PMID: 19860114
PDF is available here.
Abstract
Distances between the file tip and the major apical foramen were not significantly different between the file systems and the two EALs. In cases treated with FlexMaster significantly larger distances between file tip and minor apical foramen were found compared to M(two) and ProTaper. No significant...
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PMID: 19220512
PDF is available here.
Abstract
Three dental units with self-contained water systems in an outpatient teaching dental clinic were treated with a proprietary chlorine dioxide waterline cleaner. Three similar units were used as controls. After four weeks, test and control units were crossed over. Water samples were taken from each l...
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PMID: 19548488
PDF is available here.
Abstract
Improved compliance with recommended infection control procedures is required for all dentists evaluated in the present survey. Continuing education programs and short-time courses about cross-infection and infection control procedures are suitable to improve the knowledge of dentists....
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PMID: 20027427
PDF is available here.
Abstract
Dentists Horace Wells and later William Morton introduced the world to general anesthesia with nitrous oxide and ether, respectively. During the latter half of the 1800s, some of their colleagues actually redefined anesthetic gas mixtures as ones including either room air or oxygen as a carrier gas....
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PMID: 20222218
PDF is available here.
Abstract
In talking with dentists, the awareness level of the opportunity provided by the American Recovery and Reinvestment Act seems to be rather low. The Act provides tax breaks for dental practice owners to create jobs by making it attractive to invest in their practices. However, lower taxes should not...
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PMID: 19757644
PDF is available here.
Abstract
The highest percentage shortfall was 20.5% at a set torque of 11.4 Ncm (absolute deviation of -2.4 Ncm). The highest percentage by which a torque was exceeded was 54.6% (absolute deviation of 5.5 Ncm). The lowest value for absolute shortfall was found to be -5.6 Ncm at a set torque of 45 Ncm. The hi...
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PMID: 19587869
PDF is available here.
Abstract
The specific structure of dental units favours the presence of biofilm and microbial contamination of the dental unit waterlines (DUWL) water. The ability of bacteria to colonize surfaces and to form biofilm in water supply tubes, including DUWL, is a common phenomenon, which has been well documente...
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PMID: 19061251
PDF is available here.
Abstract
Bacteriological air sampling was conducted at 25 dental units during restorative treatment sessions before and after disinfection of dental unit waterlines (DUWL) with hydrogen peroxide. Air samples for determining the concentration and species composition of aerobic and facultatively anaerobic bact...
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PMID: 19061267
PDF is available here.
Abstract
We collected water samples from DUWLs of 20 private dental offices. We have determined that only 2 (3.4%) out of 59 dental unit water samples were found to meet the standard (<200 CFU.ml(-1)) for DUWLs water quality by American Dental Association (ADA). Of the 59 water samples examined, 14 (24%) wer...
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PMID: 18210208
PDF is available here.
Abstract
The relationship between dental practice and international standards is described together with an account of the way in which standards are drafted and published. The United Kingdom participates in the process through the British Standards Institution, which is a Member Body of the International St...
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PMID: 19192693
PDF is available here.
Abstract
The accuracy of Root ZX II (J. Morita, Kyoto, Japan) to control the apical extent of rotary canal instrumentation in vivo was assessed. Twenty-four premolars with a single canal were selected. The roots were divided in two groups according to the calibration of the automatic apical reverse mechanism...
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PMID: 18928843
PDF is available here.
Abstract
In past years, the significance of microbial resistance to biocides has increased. Twenty biocide-resistant bacterial strains were isolated from dental-unit water line biofilm. All strains resisted high biocide concentrations (up to 100 microg ml(-1)): sodium dodecyl sulphate, hydrogen peroxide, sod...
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PMID: 18661180
PDF is available here.
Abstract
The aim of this study was to evaluate the kinetics of conversion of Scotchbond Multi-purpose Plus (3M ESPE, St Paul, MN) and Prime&Bond NT (Dentsply De Trey, Konstanz, Germany) used in light-cured, self-cured, or dual-cured versions. The adhesive systems were used in the light-cured version (without...
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PMID: 18718377
PDF is available here.
Abstract
With respect to ergonomics in dentistry, more people are becoming aware of occupational hazards and paying more attention to the prevention of hazards. Dutch law on health and safety at work requires dentists to protect the health and safety of their employees and educational institutions to protect...
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PMID: 18751483
PDF is available here.
Abstract
Our results indicated with strong correlation (r = 0.90) that shorter endodontists used the microscope more often than taller endodontists. The OM was used most frequently for root-end inspection, locating canal orifices, and root-end filling, respectively. Of the practitioners who used the OM, 59%...
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PMID: 18570983
PDF is available here.
Abstract
The risk of infectious disease transmission is an inherent part of dental practice. Fortunately, such risks can be greatly reduced through modern infection control practices. Such practices include the use of various measures, including administrative, engineering, and work practice controls. Such m...
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PMID: 18501738
PDF is available here.
Abstract
BACKGROUND: The Vector system is an ultrasonic instrument that was introduced in 1999, and treatment outcomes with Vector have been compared with those achieved with the "gold standard" of scaling and root planing with Gracey curettes as well as conventional ultrasonic scalers. The aim of this paper...
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PMID: 18410394
PDF is available here.
Abstract
Facility response rate was 32% (n = 129). Sixty-three per cent of facilities had a written dental care plan primarily co-ordinated by nursing staff and social workers. Stationary dental equipment was available in 3% of facilities. Thirty-eight per cent stated an examination by a dentist was provided...
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PMID: 18201186
PDF is available here.
Abstract
Soft-tissue lasers have numerous applications in orthodontics, including gingivectomy, frenectomy, operculectomy, papilla flattening, uncovering temporary anchorage devices, ablation of aphthous ulcerations, exposure of impacted teeth, and even tooth whitening. As an adjunctive procedure, laser surg...
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PMID: 18407017
PDF is available here.
Abstract
The aim of this study was to evaluate in vitro the effectiveness of TCM Endo V and Tri Auto ZX handpieces in detecting simulated horizontal and vertical root fractures. Forty extracted maxillary incisor teeth were randomly divided into 2 groups as simulated incomplete horizontal and vertical root fr...
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PMID: 18291283
PDF is available here.
Abstract
The present work is the second part of a study on the stability and reproducibility of the energy and spectral emission of some light curing units (LCUs). In this part, Part II, LED LCUs were investigated. Results revealed that these devices presented high stability and reproducibility in terms of t...
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PMID: 18540406
PDF is available here.
Abstract
The results of this in vitro study suggest that light polymerization of the resin cement (Variolink II) used in this study is an important factor for the color of the definitive restoration and should be considered during shade selection and fabrication....
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PMID: 18241969
PDF is available here.
Abstract
The present study, divided into two parts, analyses the stability and reproducibility of the spectral and energy emission of the present light-curing units (LCUs), quartz tungsten halogen (QTH) and light-emitting diodes (LEDs). In part I, QTH LCUs were studied. The results showed that the QTH LCUs s...
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PMID: 18540405
PDF is available here.
Abstract
Despite good clinical acceptance, photoinitiating systems based on camphorquinone and amines raise concerns in terms of yellowing, aging, toxicity, or degradation in low pH conditions. This study aimed to prove whether CQ could be successfully replaced by alternative initiators in adhesive systems....
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PMID: 18540396
PDF is available here.
Abstract
This study evaluated the tensile bond strengths of three adhesive/composite core materials to bovine dentin using three different curing units. Bovine dentin surfaces were ground with 600-grit SiC paper. Bonding area was demarcated with a vinyl tape (4-mm-diameter hole). Three adhesive/composite cor...
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PMID: 18540391
PDF is available here.