Since the introduction of fast diagnostic tracks in many areas of oncology, the traditional processing of bone marrow biopsies (BMB), requiring either resin embedding or lengthy fixation and decalcification, is due to an upgrade. Thanks to a growing number of new commercially available tissue processors, microwave-enhanced processing is becoming a standard tool in the pathology laboratory, allo...

In August, 1948, at the age of 1 year, this baby girl was admitted to the surgical wards of the Royal Hospital for Sick Children, Glasgow, with a red, hot and painful swelling of the left leg of 10 days' duration. The temperature was 1010 F. and the white blood count 8,000. A diagnosis of haematogenous osteitis was made, the limb was immobilized, and, after removing venous blood for culture, pe...

A method is described for isolating asbestos fibers contained in biological tissues. It consists in incinerating the biological material in activated oxygen at 150 degrees C, and attacking the ash by 1N HC1 for 18 hr. The residue is then filtered on a membrane covered with a carbon film. Electron microscope examination of the deposit makes it possible to determine fiber concentrations when the ...

The formation of white spot lesions, or enamel demineralization, around fixed orthodontic attachments is a common complication during and following fixed orthodontic treatment, which marks the result of a successfully completed case. This article is a contemporary review of the risk factors and preventive methods of these orthodontics scars. Preventive programmes must be emphasized to all ortho...

INTRODUCTION A self-etching primer (SEP) saves valuable time by eliminating the many steps required to etch, rinse, and place a sealant before application of the adhesive and placement of the bracket. The purpose of this study was to compare the effects of a conventional etch and sealant (CES) and a SEP on enamel decalcification in vivo. METHODS Twenty-five patients who required comprehensive...

OBJECTIVES To assess the re-hardening potential of enamel matrix derivatives (EMD) and self-assembling peptides in vitro, hypothesizing that these materials may increase the mineralization of artificial carious lesions and improve hardness profiles. MATERIAL AND METHODS Forty-eight enamel samples were prepared from extracted bovine lower central incisors. After embedding and polishing, nail v...

391 theories regarding the mode of action of parathyroid hormone and its relationship to the action of vitamin D. The presentation is beguiling in its logic but far from convincing in its evidence. Regarding a theory of the mechanism of decalcification in hyperparathyroidism the startling statement is made that "new equilibria are established between the intra (inter?) cellular spaces and the b...

To serve as a baseline for a future study of enamel decalcification in relation to orthodontic treatment, the pre­ valence and severity of decalcification was determined in 204 schoolchildren who had not received orthodontic treat­ ment (mean age 12.3 years), and who lived in a Jluroide deficient area. The severity of decalcification indicated by a Decalcification Index (DI) was calculated usin...

Examination of vertebral arteries is often neglected in most hospital and coroner's necropsies. This is undoubtedly a reflection of the relative inaccessibility of these vessels, but this neglect belies their pathological importance. Although there have been several pathological studies of the vertebral arteries, none of these studies described a method for removing the arteries that would be s...

This in vivo experimental study evaluated the efficacy of fluoride-releasing elastomers in the control of Streptococcus mutans levels in the oral cavity. Forty orthodontic patients were recruited and divided into two groups of 20. Fluoride-releasing elastomeric ligature ties (Fluor-I-Ties, Ortho Arch Co. Inc., USA) were used in the experimental group, and conventional elastomeric ligature ties ...