Zinc Phosphate Cement
Dental Prosthesis Retention
Post and Core Technique
Tooth Preparation, Prosthodontic
Dental Stress Analysis
Zinc Oxide-Eugenol Cement
Giant Cell Tumor of Bone
Dental Prosthesis Design
Glass Ionomer Cements
Dental Restoration Failure
Denture, Partial, Fixed
Dental Marginal Adaptation
Root Canal Preparation
Bisphenol A-Glycidyl Methacrylate
Dental Restoration, Permanent
Acid Etching, Dental
Radiological factors influencing femoral and acetabular failure in cemented Charnley total hip arthroplasties. (1/386)We have made a retrospective review of 185 cemented Charnley total hip arthroplasties performed between 1970 and 1974 to determine the relationships between radiological variables and failure of the femoral and acetabular components. We measured the acetabular wear, the orientation of the cup, the thickness and consistency of acetabular and femoral cement mantles, radiolucency and femoral alignment. The mean follow-up was for 11.7 years. Femoral loosening was demonstrable radiologically in 15 hips (8.1%), ten (5.4%) of which were revised during the period of follow-up. Only when the first postoperative radiograph showed a thin cement mantle in Gruen zone 5 was there a significant association with failure of the femoral component. There were 12 loose acetabular components (6.5%), nine (4.8%) of which were revised. When the initial radiograph after operation showed radiolucency in DeLee and Charnley zone 1, the incidence of acetabular loosening was 28.21%. If such radiolucency was not present, the incidence of acetabular loosening was only 0.69%. Our findings emphasise the importance of careful cementing. (+info)
Influence of composite inlay/onlay thickness on hardening of dual-cured resin cements. (2/386)This investigation evaluated the effect of resin composite inlay/onlay thickness on the hardness of a group of eight dual-cure resin-based cements. Fourteen disc specimens measuring 6 mm in diameter and 2.5 mm thick were prepared from each of eight dual-cure cements: Adherence, Choice, Duolink, Enforce, Lute-It, Nexus, Resinomer and Variolink. Two specimens from each material were directly light-cured while the remainder of the specimens were light-cured through resin composite spacers varying in thickness from 1 mm to 6 mm. Curing through the spacers always resulted in a decrease in the Knoop hardness number. For some cements, hardness values were reduced by 50% or more when the resin composite spacer thickness was 4 mm or greater even when measurements were made one week after dual-curing. Low hardness values indicate the presence of a weak chemical-curing mechanism that may compromise cement quality in areas of the cavity not readily accessible to the curing light. (+info)
A survey of the delegation of orthodontic tasks and the training of chairside support staff in 22 European countries. (3/386)This paper reports on a survey which was undertaken to investigate the delegation of orthodontic tasks and the training of chairside support staff in Europe. Two questionnaires were posted to all members of the EURO-QUAL BIOMED II project together with an explanatory letter. The first dealt with the delegation of nine clinical tasks during orthodontic treatment. The second with the types of chairside assistant employed in each country and the training that they are given. Completed questionnaires, which were subsequently validated, were returned by orthodontists from 22 countries. They indicated that there was no delegation of clinical tasks in six of the 22 countries and delegation of all nine tasks in five countries. The most commonly delegated tasks were taking radiographs (in 14 of the 22 countries) and taking impressions (in 13 of the 22 countries). The least commonly delegated tasks were cementing bands (in five of the 22 countries) and trying on bands (in six of the 22 countries). Seven of the 22 countries provided chairside assistants with training in some clinical orthodontic tasks. Eighteen of the 22 countries provided general training for chairside assistants and offered a qualification for chairside assistants. Four of these 18 countries reported that they only employed qualified chairside assistants. Of the four countries which reported that they did not provide a qualification for chairside assistants, two indicated that they employed chairside assistants with no formal training and two that they did not employ chairside assistants. It was concluded that there were wide variations within Europe as far as the training and employment of chairside assistants, with or without formal qualifications, and in the delegation of clinical orthodontic tasks to auxiliaries was concerned. (+info)
Restoration of endodontically treated teeth with carbon fibre posts--a prospective study. (4/386)BACKGROUND: A prospective study was started in 1995 to evaluate the success of carbon fibre reinforced epoxy resin (CFRR) posts used to restore endodontically treated teeth. All the teeth in the study had lost more than 50% of their coronal structure. METHODS: Fifty-nine carbon fibre Composiposts cemented with Metabond and built up with Core Paste cores were placed into the teeth of 47 patients. Each tooth received a full-coverage restoration (porcelain fused to metal crown) and was followed for 6.7-45.4 months (average = 28.0 months, standard deviation = 10.7). RESULTS: Results for 52 teeth in 42 patients were analyzed. There were no fractures. The overall failure rate was 7.7% and the cumulative survival rate was 89.6% at the end of the follow-up period. The only statistically significant finding (p = 0.04) was that posts in lower premolars were at higher risk of failure. CONCLUSION: CFRR posts are among the most predictable systems available today. CFRR posts in the upper anterior teeth are associated with a higher success rate and longer life than those placed in premolars, especially lower premolars. This study contributes to the growing body of evidence that supports the use of CFRR posts in the restoration of endodontically treated teeth. (+info)
All-polyethylene versus metal-backed and stemmed tibial components in cemented total knee arthroplasty. A prospective, randomised RSA study. (5/386)We studied the quality of fixation of the tibial component using radiostereometric analysis (RSA) in 40 patients who had undergone a cemented Freeman-Samuelson total knee arthroplasty. They were prospectively randomised to either a stemmed metal-backed (MB) or non-stemmed all-polyethylene (AP) tibial component. The articulating geometry of the implants was identical, as was the operative technique and the postoperative regime. The study showed no complications of fixation using AP tibial components, and the migration was the same as that of their metal-backed counterparts. There was no bony collapse or increased subsidence of any part of the tibial component or increased incidence of radiolucent lines in the knees with AP components. Most AP implants were stable between one and two years after surgery, a finding known to be of positive prognostic significance when predicting future aseptic loosening. (+info)
Radiological features predictive of aseptic loosening in cemented Charnley femoral stems. (6/386)The radiological features of the cement mantle around total hip replacements (THRs) have been used to assess aseptic loosening. In this case-control study we investigated the risk of failure of THR as predictable by a range of such features using data from patients recruited to the Trent Regional Arthroplasty Study (TRAS). An independent radiological assessment was undertaken on Charnley THRs with aseptic loosening within five years of surgery and on a control group from the TRAS database. Chi-squared tests were used to test the probability of obtaining the observed data by chance, and odds ratios were calculated to estimate the strength of association for different features. Several features were associated with a clinically important increase (>twofold) in the risk of loosening, which was statistically significant for four features (p < 0.01). Inadequate cementation (Barrack C and D grades) was the most significant feature, with an estimated odds ratio of 9.5 (95% confidence interval 3.2 to 28.4, p < 0.0001) for failure. (+info)
Changes in proximal femoral strain after insertion of uncemented standard and customised femoral stems. An experimental study in human femora. (7/386)We have compared the changes in the pattern of the principal strains in the proximal femur after insertion of eight uncemented anatomical stems and eight customised stems in human cadaver femora. During testing we aimed to reproduce the physiological loads on the proximal femur and to simulate single-leg stance and stair-climbing. The strains in the intact femora were measured and there were no significant differences in principal tensile and compressive strains in the left and right femora of each pair. The two types of femoral stem were then inserted randomly into the left or right femora and the cortical strains were again measured. Both induced significant stress shielding in the proximal part of the metaphysis, but the deviation from the physiological strains was most pronounced after insertion of the anatomical stems. The principal compressive strain at the calcar was reduced by 90% for the anatomical stems and 67% for the customised stems. Medially, at the level of the lesser trochanter, the corresponding figures were 59% and 21%. The anatomical stems induced more stress concentration on the anterior aspect of the femur than did the customised stems. They also increased the hoop strains in the proximomedial femur. Our study shows a consistently more physiological pattern of strain in the proximal femur after insertion of customised stems compared with standard, anatomical stems. (+info)
Esthetic option for the implant-supported single-tooth restoration -- treatment sequence with a ceramic abutment. (8/386)A single implant-supported restoration is one treatment alternative to consider for the replacement of a missing tooth. Technological advances in materials and machining have led to the development of a densely sintered aluminum oxide ceramic abutment, designed and machined using CAD/CAM technology. This manufacturing method improves management of the subgingival depth of the crown/abutment interface and enhances the esthetic qualities of the restoration. However, since this ceramic abutment has less mechanical resistance than metal abutments, its use should be confined to the restoration of incisors and premolars not subjected to excessive occlusal forces. (+info)
The hallmark of GCTB is its large size, with tumors often measuring several centimeters in diameter. The tumor cells are giant cells, which are larger than normal osteoblasts, and they have a distinctive "salt and pepper" appearance under the microscope due to the mixture of light and dark-staining cytoplasmic granules.
The clinical presentation of GCTB varies depending on the location and size of the tumor. Large tumors can cause symptoms such as pain, swelling, and limited mobility in the affected limb. Smaller tumors may not cause any symptoms and may be incidentally discovered on imaging studies performed for other reasons.
GCTB is a slow-growing tumor, and the exact cause of its development is unknown. Genetic mutations have been identified in some cases, but the exact mechanisms underlying GCTB remain unclear. Treatment options for GCTB include surgery, radiation therapy, and chemotherapy, depending on the size and location of the tumor and the patient's overall health.
In conclusion, giant cell tumor of bone is a rare and benign bone tumor that can occur in any bone of the body. It is characterized by its large size and distinctive histopathological features. Treatment options vary depending on the size and location of the tumor and the patient's overall health.
Some common types of bone neoplasms include:
* Osteochondromas: These are benign tumors that grow on the surface of a bone.
* Giant cell tumors: These are benign tumors that can occur in any bone of the body.
* Chondromyxoid fibromas: These are rare, benign tumors that develop in the cartilage of a bone.
* Ewing's sarcoma: This is a malignant tumor that usually occurs in the long bones of the arms and legs.
* Multiple myeloma: This is a type of cancer that affects the plasma cells in the bone marrow.
Symptoms of bone neoplasms can include pain, swelling, or deformity of the affected bone, as well as weakness or fatigue. Treatment options depend on the type and location of the tumor, as well as the severity of the symptoms. Treatment may involve surgery, radiation therapy, chemotherapy, or a combination of these.
Cementation furnace, Sheffield
John Alexander Agnew
Cleveland Bridge & Engineering Company
Robert G. Ritter
The Queen's Award for Enterprise: International Trade (Export) (2002)
1951 New Year Honours
East West Metro Tunnel
Kolkata Metro Line 2
Inlays and onlays
ITD Cementation India Ltd, ITDCEM:NSI profile - FT.com
Appointment of Geologist Increases Competitive Advantage at Murray & Roberts Cementation - Mining Technology
British Library EThOS: Mass transfer behaviour for a packed bed copper cementation system.
Immediate Dentin Sealing for Adhesive Cementation of Indirect Restorations: A Systematic Review and Meta-Analysis - PubMed
Experimental study on the cementation level in an artificial rock with crushable grains<...
Impact of thermal regime on quartz cementation in Cambrian sandstones of Lithuania<...
A new model for hauling ore: Cementation develops injection hoisting technology for transporting ore to surface - by Lindsay...
Vertical effective stress and temperature as controls of quartz cementation in sandstones : evidence from North Sea fulmar and...
Adhesive cementation of fiber reinforced posts
Why Cementation • Cementation
Cementation facility of radioactive waste treatment facility at Khmelnytskyi NPP | Nuvia Group
The Pulpal Response to Crown Preparation and Cementation. | J Endod;49(5): 462-468, 2023 May. | MEDLINE
Cementation scenarios for New Zealand Cenozoic nontropical limestones
NORA Mining Sector Council Members | NIOSH | CDC
Crown Cementation - Doctors in Satara - Book Appointment - See Profile - Read Reviews
Denu Temporary Cementation Non-eugenol - Bio Link Medical Surgical Equipment & Instruments Trading
ITD Cementation awards contract for underground Chennai Metro Rail - Metro Rail News
Effects of Photodynamic Therapy on the Adhesive Interface of Fiber Posts Cementation Protocols
View of Benefits of Using Dual Allcem in the Cementation of Fiberglass Posts
Free Dental CE - Permanent Cementation: A Key Component to Restoration Longevity - 6/23/15
After Crown/Inlay Cementation New York NY, Dr. Stephen P. Bowne & Dr. Anthony S. Chi
News & Articles
Contrasting intensity of aragonite dissolution and dolomite cementation in glacial versus interglacial intervals of a...
More than a feeling?-Overruling the preoperatively templated offset option leads to a minor offset increase in short stem total...
National extraction | Fair Work Commission
JPE scales up aggregates business with Doosan deal | Construction Enquirer News
University of Glasgow - Postgraduate research students - Amanda Rebecca Stubbs
Everything You've Ever Wanted to Know About Getting Veneers, Answered by Dentists
- Vertical effective stress and temperature as controls of quartz cementation in sandstones : evidence from North Sea fulmar and Gulf of Mexico Wilcox sandstones. (dur.ac.uk)
- Oye, Olakunle J. and Aplin, Andrew C. and Jones, Stuart J. and Gluyas, Jon G. and Bowen, Leon and Harwood, Joseph and Orland, Ian J. and Valley, John W. (2020) 'Vertical effective stress and temperature as controls of quartz cementation in sandstones : evidence from North Sea fulmar and Gulf of Mexico Wilcox sandstones. (dur.ac.uk)
- The Company's subsidiaries include ITD Cementation Projects India Limited, ITD Cemindia JV and ITD Cem-Maytas Consortium. (ft.com)
- ITD Cementation India Limited is an India-based engineering and construction company. (ft.com)
- ITD Cementation India Limited has been awarded contracts to build twin tunnels and ten underground stations between Lighthouse at Marina Beach and the Kodambakkam overpass, according to officials. (metrorailnews.in)
- To understand the influence of the cementation, uncemented samples were reconstituted from a mixture of crushable grains and cement (not hydrated) in the same percentage by weight as the cemented (hydrated) samples, in order to obtain the same fraction of fines. (lu.se)
- The aim of this article is to review the existing literature regarding FRCP, the available cement options and their adhesive strategy, along with the inherent difficulties to root canal cementation. (bvsalud.org)
- temporary cementation with noneugenol cement and 3. (who.int)
- temporary cementation with eugenol cement. (who.int)
- 3M ESPE, St Paul, MN) or self-adhesive (Relyx U200, 3M ESPE) after the glass fiber post cementation. (unesp.br)
- 05). Conclusions PDT presented negative effects on the bond strength to dentin in the cervical third after cementation using Relyx ARC and on the dentinal penetrability of the etch-and-rinse adhesive system in the cervical and apical thirds of the prosthetic space. (unesp.br)
- The adhesive, and/or the tooth cleansing process prior to cementation, may result in some temporary sensitivity. (bowne-chi.com)
- Let's face it - the final cementation procedure needs to be performed predictably and easily, setting the stage for long-term restoration performance and success. (vivalearning.com)
- Following the cementation procedure, the gingival tissues (gums) are usually irritated and may be sore for two or three days. (bowne-chi.com)
- The Pulpal Response to Crown Preparation and Cementation. (bvsalud.org)
- His appointment will have a number of benefits for Murray & Roberts Cementation in terms of the expertise he will bring to its operation with his thorough knowledge of geology and understanding of exploration projects. (mining-technology.com)
- After cementation of the fiber posts, the roots were cross sectioned, and then specimens from the cervical, middle, and apical thirds of the prosthetic space were obtained. (unesp.br)
- The specimens were submitted to the pushout test and dentinal penetration evaluation of the cementation protocol using laser confocal microscopy. (unesp.br)
- Vital to every dental practice is the final cementation of an indirect restoration. (vivalearning.com)
- A new technology developed by Cementation in North Bay is holding promise as an alternative for bringing ore mined underground up to the surface. (republicofmining.com)
- With a vision to change the way things are done in our industry for the benefit of all stakeholders and a firm belief in safety at work and at home as the first and most important change, it has been evident from the start that Cementation cares about people. (cementation.com)
- Bevelander reports: ' Murray & Roberts Cementation is in the process of upgrading its fleet of exploration drill rigs to fill this need in the market. (mining-technology.com)
- Cementation Canada has been recognized numerous times as one of Canada's Top 100 Employers (by Mediacorp) and one of Canada's Safest Employers (by Canadian Occupational Safety Magazine - a Thomson Reuters business), as well as one of The Financial Post's Ten Best Companies to Work For. (cementation.com)
- Cementation USA has been recognized as one of Utah's Best Companies to Work For and a Fast 50 company (by Utah Business Magazine). (cementation.com)
- Cementation president Roy Slack said the technology has real potential to bring substantial value to the industry. (republicofmining.com)
- 26th July 2022 for Immediate Release SALT LAKE CITY, UTAH Cementation Americas (Cementation) is pleased to announce the completion of the full faced raise bored raise at Solvay Chemicals #5 shaft in Green River, Wyoming. (cementation.com)
- He has extensive experience in the mining exploration environment, and has worked for high-profile mining houses including Goldfields, JCI, Durban Roodepoort Deep and Anglo Platinum prior to joining Murray & Roberts Cementation. (mining-technology.com)
- in this case, the supply of silica rather than the precipitation of quartz becomes an important control on the rate and extent of cementation. (dur.ac.uk)
- One-step fiber post cementation and core build-up in endodontically treated tooth: A clinical case report. (bvsalud.org)
- This clinical case report addresses the step-by-step of the application of a core-and-post system that uses a single resin composite material to fiber post cementation and core build-up in a maxillary left central incisor . (bvsalud.org)
- The purpose of this study was to detect the change in size of the trial plastic insert needed to achieve maximal coronal plane stability in total knee arthroplasty (TKA) with the knee in full extension before and after cementation of the final components. (medscape.com)
- In 64 consecutive primary total knee arthroplasties, the sizes of the plastic trial inserts fulfilling the above criteria were recorded before and the after cementation of the final components using a definite cementation technique that ensures proper seating of the components in a fully extended knee. (medscape.com)
- Such a cementation technique would ensure proper seating of the components in the fully extended knee so that the extension gap would accommodate a thicker polyethylene insert than the trial plastic insert used in trial reduction, with maintenance of coronal plane stability of the fully extended knee. (medscape.com)
- The aim of this study was to detect the change in size of the trial plastic insert needed to achieve maximal coronal plane stability with the knee in full extension before and after cementation of the final components in total knee arthroplasty. (medscape.com)
- 4. Articular degeneration after subchondral cementation for giant cell tumors at the knee. (nih.gov)
- We concluded that proper seating of the components with our cementation technique would leave an extra space of 2 mm to the residual extension gap. (medscape.com)
- [ 3 ] In the current study, we hypothesized that additional tibial bone stock could be preserved if a definite cementation technique were used. (medscape.com)
- The use of different materials for post cementation and core build-up requires more steps, which increases the chair- time and number of interfaces among the materials. (bvsalud.org)
- Critical) This program presents three dental cements used for final cementation and the advantages and disadvantages of each. (nih.gov)
- En odontología, se emplea para el proceso de unir partes de un diente o para unir a un diente natural el material de restauración, o para fijar las bandas ortodóncicas a los dientes por medio de un adhesivo. (bvsalud.org)
- Here we report on two cases of adverse local reaction to eugenol, contained within a temporary restorative material and a temporary cementation material respectively, which illustrate these problems. (nih.gov)
- Fixer Cem is due to its especial gel-consistency and uncommonly strong adhesion to the hard dental tissues the first material of your choice for cementation. (royaldentisrael.com)