Royal advertising toothpaste pot lids.

Royal patronage is not something new. Engraved images of British royalty were used by early toothpaste manufacturers, dentists and perfumiers to convey royal endorsement to boost their product sales in the nineteenth and early twentieth centuries. Packaged in high-quality ceramic pots, these toothpastes and powders promoted cleaning, beautifying and preserving the teeth and gums.

A Century of Advertising Toothpaste Pot Lids (1830-1930).

During the Victorian and Edwardian period, ceramic pots sealed with a transferred advertising lid were used by retailers in many English-speaking countries to package toothpastes and toothpowders. These pots, retrieved from former rubbish tips, have become highly collectable due to their variety and graphical appeal, as well as their historical significance. They clearly show the creativity and inventiveness of the skilled engravers who etched the copper plates to produce the transfers so these containers could be manufactured in large numbers.

Comparison of narcotic prescribing habits and other methods of pain control by oral and maxillofacial surgeons in the United States and Canada.

Purpose: A previous study of the narcotic prescribing habits and other methods of pain control used by American oral and maxillofacial surgeons (OMSs) after the removal of impacted third molars showed that they often prescribe more tablets of a narcotic than may be necessary. It has been suggested that the excess tablets could be diverted for nonmedical use. The purpose of this study was to determine whether Canadian OMSs have similar narcotic prescribing habits, because Canada has the second highest oral consumption of prescription oral narcotics in the world.

Osteomyelitis in a Paleozoic reptile: ancient evidence for bacterial infection and its evolutionary significance.

We report on dental and mandibular pathology in Labidosaurus hamatus, a 275 million-year-old terrestrial reptile from North America and associate it with bacterial infection in an organism that is characterized by reduced tooth replacement. Analysis of the surface and internal mandibular structure using mechanical and CT-scanning techniques permits the reconstruction of events that led to the pathology and the possible death of the individual. The infection probably occurred as a result of prolonged exposure of the dental pulp cavity to oral bacteria, and this exposure was caused by injury to the tooth in an animal that is characterized by reduced tooth replacement cycles.

Studies on the chronology of third molar mineralization in First Nations people of Canada.

Forensic age estimation of living subjects has become increasingly important in recent years. One main criterion for dental age estimation in the relevant age group is the evaluation of third molar mineralization. In the present study, we determined the stages of third molar mineralization in 347 female and 258 male First Nations people of Canada aged 11 to 29 years based on radiological evidence from 605 conventional orthopantomograms.

Metabolic characteristics of experimental free vascularized canine gracilis muscle transfers.

A canine gracilis model was used to study muscle energy metabolism and enzyme activities after free vascularized muscle transfer. Fifteen male mongrel dogs underwent orthotopic, free transfer of the left gracilis with microneurovascular anastomosis. After a minimum of 10 months' recovery, muscle biopsy specimens were obtained from the transfers and the contralateral controls and analyzed for relative fiber type areas and maximum activities of phosphorylase, hexokinase, phosphofructokinase, glycerol-3-phosphate dehydrogenase (GPDH), pyruvate kinase, lactate dehydrogenase, citrate synthase, succinate dehydrogenase, 3-hydroxyacyl coenzyme A dehydrogenase (HAD), and creatine phosphokinase.