Biomedical subjects
Publications and source records attributed to R J Cresson.
A comparison of bactericidal activity of two surface disinfectants showed that both were highly effective. The glutaraldehyde-based disinfectant showed higher efficacy on roughed surfaces than the alcohol-based disinfectant. The study used a novel, and generally applicable, method to evaluate the surface killing potential of disinfectants.
OBJECTIVE: To determine whether an intra-oral photograph could supplant the need for either a plaster model or occlusal radiograph in pre-implant tomographic assessment with the Imaging Sciences 1S-2000 system. METHODS: Instant photographs obtained with the CU-5 instant Polaroid camera of 25 patients' maxillary or mandibular arches were scanned into the computer in lieu of a plaster cast or occlusal radiograph. Tomographs were then exposed and evaluated by the referring dentists. RESULTS: Implant tomographs of diagnostic quality were obtained for all 25 patients. CONCLUSIONS: The CU-5 system offers the clinician a simpler, faster technique to produce dental implant tomographs than is currently available.
This study indicates that a growing number of dental schools are now using individual selection criteria to determine which radiographs, if any, are required for screening new and recall patients. A majority of Canadian schools are in compliance with CDA's Guidelines For the Control Of Radiation In the Dental Office, which state that the frequency of radiological examination is a matter of clinical judgment, and that it should not be considered as a routine procedure. In general, most schools support the use of individual selection criteria prior to requesting radiographs. The results of this study also indicate that more U.S. dental schools now follow the U.S. Food and Drug Administration's (FDA) recommendations on radiation exposure than at any other time in history. However, both the FDA recommendations and the American Association of Dental Schools' guidelines for prescribing radiographs are only recommendations, which are subject to clinical judgment, and may not be applied universally to all patients.