Showing 1-30 of 57 results for "

12056

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Massimo Peruffo et al.
Physical chemistry chemical physics : PCCP, 15(6), 1956-1965 (2012-12-22)
Dissolution processes at single crystal surfaces often involve the initial formation and expansion of localized, characteristic (faceted) etch-pits at defects, in an otherwise comparatively unreactive surface. Using natural gypsum single crystal as an example, a simple but powerful morphological analysis...
Anand Rajapur et al.
The journal of contemporary dental practice, 13(6), 824-829 (2013-02-14)
While literature demonstrates that the optimum accuracy is obtained with the custom trays, the use of stock trays for elastomeric impressions appears to be popular in general practice. The aim of the study was to evaluate the effect of thickness...
So-Yeun Kim et al.
The International journal of prosthodontics, 26(2), 161-163 (2013-03-12)
The purpose of this investigation was to measure the accuracy of digital impressions (DIs) compared to conventional impressions (CIs). Using the iTero system, a master cast was scanned to produce stereolithography dies. As a control group, silicone impressions were taken...
D Barlow et al.
Annals of the Royal College of Surgeons of England, 95(2), 107-109 (2013-03-15)
Plaster of Paris (PoP) impregnated bandages have been used to maintain the position of bones and joints for over a century. Classically, wool dressing is applied to the limb before the PoP, which can then be moulded to the desired...
Rawaa Ammar et al.
Environmental science and pollution research international, 20(12), 9014-9025 (2013-06-15)
One of the most important sources of solid waste in the Mediterranean Basin ecosystem originated from the phosphate fertilizer industries, which discharge phosphogypsum (PG) directly into aquatic environments or are stacked on stockpiles. The present study investigates metal release from...
Deep dermal burns following the application of a plaster of Paris backslab.
Tam Quinn et al.
ANZ journal of surgery, 82(5), 380-381 (2013-01-12)
C M Belfiore et al.
Environmental science and pollution research international, 20(12), 8848-8859 (2013-06-08)
Black crusts are recognized to have been, up to now, one of the major deterioration forms affecting the built heritage in urban areas. Their formation is demonstrated to occur mainly on carbonate building materials, whose interaction with an SO2-loaded atmosphere...
Kelin Wang et al.
Journal of environmental sciences (China), 25(9), 1858-1864 (2014-02-14)
The mercury flux in soils was investigated, which were amended by gypsums from flue gas desulphurization (FGD) units of coal-fired power plants. Studies have been carried out in confined greenhouses using FGD gypsum treated soils. Major research focus is uptakes...
Malesh Pujari et al.
The Journal of oral implantology, 40(2), 137-145 (2014-01-25)
Movement of impression copings inside the impression material using a direct (open tray) impression technique during clinical and laboratory phases may cause inaccuracy in transferring the 3-dimensional spatial orientation of implants intraorally to the cast. Consequently, the prosthesis may require...
John V Gentile et al.
Journal of pediatric orthopedics, 33(3), 254-261 (2013-03-14)
Multiple treatment modalities exist for unicameral bone cysts (UBC), including steroid injection, autologous bone marrow injection, mechanical decompression, intramedullary fixation, curettage, and bone grafting. All have their own potential limitations such as high recurrence rates, cyst persistence, need for multiple...
Heike Rudolph et al.
The International journal of prosthodontics, 27(4), 366-375 (2014-07-11)
Fast-setting impression materials may be prone to inaccuracies due to accidental divergence from the recommended mixing protocol. This prospective randomized clinical trial aimed to assess three-dimensional (3D) deviations in the reproduction of subgingival tooth surfaces and to determine the effect...
V G Tudakova et al.
Voprosy kurortologii, fizioterapii, i lechebnoi fizicheskoi kultury, (3)(3), 41-44 (2013-07-04)
This paper was designed to report the results of investigations into the therapeutic effectiveness of "Kluchi" sulfate magnesiumcalcium mineral water used to treat 194 patients presenting with chronic acalculous cholecystitis and different types of biliary tract dysfunction. The control group...
Kathryn A Dooley et al.
The Analyst, 138(17), 4838-4848 (2013-06-27)
In situ chemical imaging techniques are being developed to provide information on the spatial distribution of artists' pigments used in polychrome works of art such as paintings. The new methods include reflectance imaging spectroscopy and X-ray fluorescence mapping. Results from...
Ahmad Kutkut et al.
Journal of the International Academy of Periodontology, 15(4), 113-124 (2013-12-25)
The aim of this report was to clinically and radiographically evaluate changes to the hard and soft tissues around implants placed in extraction sockets grafted with medical grade calcium sulfate hemihydrate (MGCSH) mixed with platelet-rich plasma (PRP) and a collagen...
Catherine Hui et al.
Canadian journal of surgery. Journal canadien de chirurgie, 57(4), 247-253 (2014-08-01)
The Ponseti method of congenital idiopathic clubfoot correction has traditionally specified plaster of Paris (POP) as the cast material of choice; however, there are negative aspects to using POP. We sought to determine the influence of cast material (POP v....
Zalilah Tapsir et al.
The journal of contemporary dental practice, 14(1), 47-50 (2013-04-13)
To evaluate and compare the microleakage of various restorative materials used as coronal barriers between endodontic appointments. Eighty extracted human permanent posterior teeth were prepared for standardized access cavities with dimensions of 4 × 4 × 4 mm. The teeth...
Laboratory work for restorative dentistry: model pouring and die preparation.
Bruce W Small
General dentistry, 60(6), 457-460 (2012-12-12)
Angela R Roper et al.
Health physics, 104(3), 264-269 (2013-01-31)
Coal combustion residues from coal-fired power plants can be advantageous for use in building and construction materials. These by-products contain trace quantities of naturally occurring radionuclides from the uranium and thorium series, as well as other naturally occurring radionuclides such...
Clovis Monteiro Bramante et al.
Journal of applied oral science : revista FOB, 21(1), 32-36 (2013-04-06)
To evaluate the biocompatibility and the setting time of Portland cement clinker with or without 2% or 5% calcium sulfate and MTA-CPM. Twenty-four mice (Rattus norvegicus) received subcutaneously polyethylene tubes filled with Portland cement clinker with or without 2% or...
Usama Nassar et al.
The Journal of prosthetic dentistry, 109(3), 172-178 (2013-03-26)
A new elastomeric impression material, a vinyl polyether silicone, has been commercially introduced. Its dimensional stability at different pouring times has not been reported. The purpose of this study was to evaluate the dimensional stability of vinyl polyether silicone (VPES)...
Simple design for an aeroplane plaster of Paris splint in the immobilisation of axillary skin grafts.
A Salibi et al.
Annals of the Royal College of Surgeons of England, 95(4), 298-298 (2013-05-17)
Joon Im et al.
American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics, 145(4), 434-442 (2014-04-08)
The aim of this study was to compare the virtual and manual tooth setups with digital and plaster models in extraction cases by measuring various occlusal parameters and applying the American Board of Orthodontics objective grading system. Linear intra-arch and...
Zonggang Chen et al.
Materials science & engineering. C, Materials for biological applications, 45, 94-102 (2014-12-11)
The nHAC/CSH composite is an injectable bone repair material with controllable injectability and self-setting properties prepared by introducing calcium sulfate hemihydrate (CSH) into mineralized collagen (nHAC). When mixed with water, the nHAC/CSH composites can be transformed into mineralized collagen/calcium sulfate...
Ivančica Ternjej et al.
Environmental pollution (Barking, Essex : 1987), 189, 229-238 (2014-04-01)
The aim of our study was to investigate how exposure to heavy metal-rich waters from gypsum mining affects the morphology and levels of primary DNA damage in Gammarus balcanicus. Chemical analysis revealed increased concentrations of metals in water and sediment...
Calcium sulfate dihydrate (gypsum) scale formation on heat exchanger surfaces: The influence of scale inhibitors.
Amjad Z.
Journal of Colloid and Interface Science, 123(2), 523-536 (1988)
M Inglis et al.
The bone & joint journal, 95-B(9), 1285-1289 (2013-09-03)
Fractures of the forearm (radius or ulna or both) in children have traditionally been immobilised in plaster of Paris (POP) but synthetic cast materials are becoming more popular. There have been no randomised studies comparing the efficacy of these two...
Denture impressions.
C Jooste
SADJ : journal of the South African Dental Association = tydskrif van die Suid-Afrikaanse Tandheelkundige Vereniging, 66(9), 428-429 (2012-12-01)
Dominique Claveau-Mallet et al.
Water research, 47(4), 1512-1520 (2013-01-12)
The objective of this work was to evaluate the capacity of steel slag filters to treat a gypsum mining leachate containing 11-107 mg P/L ortho-phosphates, 9-37 mg/L fluoride, 0.24-0.83 mg/L manganese, 0.20-3.3 zinc and 1.7-8.2 mg/L aluminum. Column tests fed...
P Kashi Vishwanathan et al.
The journal of contemporary dental practice, 13(6), 773-781 (2013-02-14)
To compare the fracture resistance of teeth prepared with rotary system and filled with single cone guttapercha followed by lateral condensation with different sealers like zinc oxide eugenol and resin based (AH26) to that of resilon. A total number of...
The crystallization of calcium sulfate dihydrate.
Smith BR and Sweett F.
Journal of Colloid and Interface Science, 37(3), 612-618 (1971)