Radionuclide solubility is one of the factors that can determine the 'source term' for potential migration to the far field. Hence, the mechanisms of immobilisation of radionuclides in cements need close study in order to quantify the nature of the binding. The nature of the binding forces in a cement matrix is very species sensitive, so it is difficult to produce a general description. This re...

Reinforced concrete structures exposed to aggressive environments often require repair or retrofit even though they were designed to last >50 years. This statement is especially true for structures subjected to sulfate attack. It is critical that fundamental models of life prediction be developed for durability of concrete. Based on experimental results obtained over a 40-year period, scaling a...

The aim of this work was to characterize the initial wear kinetics of two different types of glass ionomer cement used in dentistry (the conventional glass ionomer cement and the resin-modified glass ionomer cement) under sliding friction after 28-day storing in distilled water or Ringer's solution. Sliding friction was applied through a pin-on-disk tribometer, in sphere-on-plane contact condit...

PURPOSE To evaluate the fixation strength at the interface between the Kerboull-type plate and bone cement in 6 experimental conditions. METHODS Experimental materials comprised a simulated acetabular block, a simulated Kerboulltype plate, a pressuriser cover, a pressuriser arm, and bone cement. The simulated Kerboull-type plate was placed on the simulated acetabular block, with the pressuris...

Editor—We appreciate the comments fromDr Karnwal and colleagues and Dr Jain and colleagues and their interest in our recent publication. Regarding the question from Dr Karnwal and colleagues on the type of anaesthetic administered to the patients, an overwhelmingmajority of the included patients (85–90%) received spinal anaesthesia for their surgery, as also stated in Table 1. In addition, the ...

OBJECTIVE The purpose of this study was to evaluate the effects of the viscosities and curing modes on the degree of conversion (DC) of two resin cements. METHODS Eight experimental groups were evaluated (n=5), according to the dual-cured resin cements (Nexus 2/Variolink II), viscosity (low and high) and evaluation time (5 minutes and 24 hours). The resin cements were applied to surface of a ...

OBJECTIVES To comparatively assess the micro shear bond strength (MSBS) of dentin bonded surface pre-treated zirconia ceramics. MATERIALS AND METHODS Zirconia blocks were sectioned into 50 cubical blocks. The blocks were further categorized into five groups (n = 10 each). Group I: No treatment was performed on zirconia samples; Group II: The zirconia samples were sand-blasted; Group III: Grou...

1. Dental Spa Dental Clinic, Daejeon, Republic of Korea 2. Dept. of Dental Hygiene, College of Health Science, Sunmoon University, Cheonan, Republic of Korea 3. Dept. of Dentistry, U Dental Hospital, Seoul, Republic of Korea 4. Dept. of Conservative Dentistry, School of Dentistry, Seoul National University, Seoul, Republic of Korea 5. Dept. of Pediatric Dentistry, College of Dentistry, Yonsei U...

Dental cements are widely used in dentistry. Base material, temporary filling material and luting agents can all have different clinical applications. Different types of cement have also been developed for various orthodontic and endodontic treatments. In literature it is still argued that there is not ideal cement answering all purposes yet, so different materials are required for the comprehe...

Guest editors / Sajid A. Jivraj, DDS, MSEd, is chairman of the Section of Fixed Prosthodontics and Operative D e n t i s t r y , University of Southern California School of Dentistry. He also maintains a private practice limited to prosthodontics in Sherman Oaks and Torrance, Calif. Terry E. Donovan, DDS, is professor and division chair, Primary Oral Health care, University of Southern Californ...