51
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Clarke-Martin JA, Brady JM. Successful use of sealants in the dental office. JOURNAL OF THE MARYLAND STATE DENTAL ASSOCIATION 1988; 31:11-2. [PMID: 3183530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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52
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Redouty LJ, Brady JM. Considering the psychosocial aspects of AIDS. MICHIGAN HOSPITALS 1986; 22:17-21. [PMID: 10277697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
People with AIDS have great needs--not only physical due to the effects of the disease on their bodies, but psychological as well. In addition, fear and repugnance of the disease and its victims has started another epidemic dubbed AFRAIDS.
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Levin LS, Rosenbaum KN, Brady JM, Dorst JP. Osteogenesis imperfecta lethal in infancy: case report and scanning electron microscopic studies of the deciduous teeth. AMERICAN JOURNAL OF MEDICAL GENETICS 1982; 13:359-68. [PMID: 7158636 DOI: 10.1002/ajmg.1320130403] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Radiologic evaluation of the skeleton and scanning electron microscopic studies of the teeth were performed on an infant boy with a lethal osteogenesis imperfecta (OI) syndrome who died at 10 mo of pneumonia. The skeletal findings included ribs that were focally expanded by fracture calluses, flat vertebral bodies, and wide limb bones. On fractured tooth surfaces, the enamel and dentin were normal as was the dentin calcification front. Although microscopic abnormalities have been noted in teeth from previously reported infants with lethal OI, a few studies also report infants with normal teeth. These differences in dental findings may indicate heterogeneity in OI lethal in infancy. Results of our study indicate that, until the primary biochemical defects in the OI syndromes are elucidated, examination of teeth from other infants with lethal OI and detailed evaluation of other clinical and skeletal features will aid in delineating heterogeneity and variation in expression in lethal OI.
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Hollinger JO, Moore EM, Brady JM, Lorton L. Clinical and laboratory comparison of three adhesive resins for restoring noncarious cervical lesions. GENERAL DENTISTRY 1981; 29:504-9. [PMID: 6459970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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55
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56
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Cutright DE, Huget EF, Brady JM. Asbestos: a subtle carcinogen in the dental laboratory. GENERAL DENTISTRY 1980; 28:46-50. [PMID: 6936328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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57
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Liggett WR, Brady JM, Tsaknis PJ, Del Rio CE. Light microscopy, scanning electron microscopy, and microprobe analysis of bone response to zinc and nonzinc amalgam implants. ORAL SURGERY, ORAL MEDICINE, AND ORAL PATHOLOGY 1980; 49:254-62. [PMID: 6928311 DOI: 10.1016/0030-4220(80)90057-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Freshly mixed, unset zinc-free and zinc-containing analgam was implanted in the right tibia of 32 rats. Half of the specimens were examined by the light microscope and the other half by the scanning electron microscope and x-ray microprobe analysis. It was found that amalgam is well tolerated by the rat osseous tissue, and there were no histologic reaction differences between zinc and zinc free amalgam. The surfaces of the implants were covered by an organic film at 3 weeks and with bone at later intervals. Very little corrosion products containing sulfur were observed on the amalgam surface at all intervals. Bone adjacent to the amalgam contained tin and sulfur irrespective of the presence of zinc in the alloy, indicating outward migration of specific components of the alloy.
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58
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Levin LS, Brady JM, Melnick M. Scanning electron microscopy of teeth in dominant osteogenesis imperfecta: support for genetic heterogeneity. AMERICAN JOURNAL OF MEDICAL GENETICS 1980; 5:189-99. [PMID: 7395911 DOI: 10.1002/ajmg.1320050213] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Scanning electron microscopic studies were performed on 25 deciduous and permanent teeth from members of 7 kindreds with dominant nonlethal osteogenesis imperfects (OI). Two families had normal teeth on clinical and radiological examination; five families had blue or brown opalescent teeth with specific radiologic findings. Enamel surfaces and prism organization were normal on all teeth. On fractured surfaces, the dentin tubules of normal teeth from patients with OI were evenly distributed and coursed regularly to the dentin-enamel junction. Opalescent teeth had few tubules and those present were short, narrow, and tortuous. Dentin calcification fronts of normal teeth were composed of many nodules with regularly spaced openings on their surfaces. Calcification fronts of opalescent teeth were composed of irregularly spaced, small nodules, which varied greatly in size and the nodules lacked tubule openings on their surfaces. The results of this study support the concept that at least two dominant forms of OI exist--one in which all individuals with IO have normal teeth, and the other in which all with OI have blue or brown opalescent teeth with characteristic changes on SEM.
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59
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Allen AL, Brady JM. Periodontosis: a case report with scanning electron microscopic observations. J Periodontol 1978; 49:415-8. [PMID: 288908 DOI: 10.1902/jop.1978.49.8.415] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A tooth and associated periodontal tissues from a patient with the diagnosis of periodontosis was subjected to scanning electron microscopic evaluation after reflection of the soft tissue portion of the lingual defect. The cemental surface of the apical portion of the lesion was found to be populated by markedly similar rod-shaped organisms. The microorganisms were observed to be continuously present in a coronal-apical direction as the transition from cementum to the attached soft tissues at the base of the defect were examined. These findings provide additional evidence that the lesion of periodontosis is characterized by a rather distinct microbial population of rod-shaped organisms located predominately at the base of the defect.
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60
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Webber RT, del Rio CE, Brady JM, Segall RO. Sealing quality of a temporary filling material. ORAL SURGERY, ORAL MEDICINE, AND ORAL PATHOLOGY 1978; 46:123-30. [PMID: 277870 DOI: 10.1016/0030-4220(78)90446-2] [Citation(s) in RCA: 95] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Endodontic access cavities were prepared in forty extracted human teeth. The access cavities were obturated with Cavit and tested for leakage with methylene blue. The data suggested that at least a 3.5 mm. thickness of Cavit should be used in order to prevent leakage. Examination under the scanning electron microscope showed areas in which the constituents of Cavit were improperly mixed, which may lead to increased penetration.
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61
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Segall RO, del Rio CE, Brady JM, Ayer WA. Evaluation of débridement techniques for endodontic instruments. ORAL SURGERY, ORAL MEDICINE, AND ORAL PATHOLOGY 1977; 44:786-91. [PMID: 270074 DOI: 10.1016/0030-4220(77)90388-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Files, reamers, and Hedström files were used to instrument both wet and dry canals and then cleansed by a chairside technique. Statistical analysis of the various cleansing techniques showed that 2 by 2 inch gauze wipes, either wet or dry, cleansed the instruments of debris better than any other means tested.
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Miller RA, Brady JM, Cutright DE. Degradation rates of oral resorbable implants (polylactates and polyglycolates): rate modification with changes in PLA/PGA copolymer ratios. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH 1977; 11:711-9. [PMID: 893490 DOI: 10.1002/jbm.820110507] [Citation(s) in RCA: 435] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This study determined the difference in rate of degradation between pure polymers of lactic acid (pla), glycolic acid (PGA), and various ratios of copolymers of these two substances. Fast-cured and slow-cured polyglycolide was compared with copolymers of glycolide/lactide intermixed in ratios of 75:25, 50:50, and 25:75, as well as pure polylactide. A total of 420 rats were implanted with carbon-14 and tritium-labeled polymers in bone and soft tissue. At intervals of 1, 2, 3, 5, 7, 9, and 11 months, groups of five animals with the implants in bone and five with the implants in the abdominal wall were sacrificed. The implant area as well as tissue from the liver, spleen, kidney, lung and some muscle tissue was analyzed for radioactivity along with the urine and feces collected throughout the experiment. Half-lives of the different polymers and copolymers were calculated from the radioactivity present in the implant area for each time interval. Half-life of the polymers and copolymers decreased from 5 months for 100% PGA to 1 week with 50:50 PGA:PLA copolymer and rapidly increased to 6.1 months for 100% PLA. Fast-cured PGA had a half-life in tissue of 0.85 months. No difference in rate of degradation was seen in soft tissue or bone. No significant radioactivity was detected in urine, feces, or tissue samples. From this study, it is concluded that control of degradation rate of the implant could best be attained by varying the composition of PLA and PGA between 75% and 100% PLA along with a corresponding 25% to 0% PGA. This would provide a half-life range of the implant of from 2 weeks to 6 months.
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Segall RO, del Rio CE, Brady JM, Ayer WA. Evaluation of endodontic instruments as received from the manufacturer: the demand for quality control. ORAL SURGERY, ORAL MEDICINE, AND ORAL PATHOLOGY 1977; 44:463-7. [PMID: 269342 DOI: 10.1016/0030-4220(77)90417-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Two hundred seventy new files, reamers, and Hedström files from three different manufacturers were evaluated for debris and defects. Statistical analysis of the new instruments showed that one company's instruments were cleaner than the other two but still contained defects. A standard for quality is proposed.
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64
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Brady JM, Goozh W. Factors influencing the registered nurse's role. JOURNAL - AMERICAN HEALTH CARE ASSOCIATION 1977; 3:76-7. [PMID: 10621686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
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65
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Brady JM, Gray WA, Caldwell MA. The electron microscopy of bacteriophage-like particles in dental plaque. J Dent Res 1977; 56:991-3. [PMID: 270498 DOI: 10.1177/00220345770560082901] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The morphology of bacteriophage-like particles contained in samples of dental plaque is described. The phage-like particles were observed within fusiform-shaped bacteria and in clumps between bacteria. The particles were hexagonal in cross section, approximately 1,100 nm in diameter and contained an electron-dense core. In areas of cell lysis tail forms were observed both free and in association with the particles. Occasional particles were attached to bacterial cell walls by means of shortened tailpieces.
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66
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Dupont AA, Brady JM, del Rio CE. Scanning microscopic evaluation of canal débridement as compared to present methods. ORAL SURGERY, ORAL MEDICINE, AND ORAL PATHOLOGY 1977; 44:113-24. [PMID: 267869 DOI: 10.1016/0030-4220(77)90252-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Ninety-one samples of root canal contents were obtained from thirty-one teeth. The paper point samples were evaluated for exudate, subjected to bacteriologic analysis, and/or examined with the scanning electron microscope. A comparison was made between the presence or absence of exudate, positive and negative cultures, and the presence or absence of contaminants as examined under the SEM. All three methods of evaluation showed some degree of correlationmscanning electron microscopy appears to be a more sensitive test for canal status.
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Abstract
The dentitions of 900 dentists were examined for the presence of cervical erosion. Of these, 48 individuals of 5.3% had obserable erosion. Silicone impressions were made of the eroded labial surfaces in a typical quadrant, and epoxy resin models were constructed. These were examined in the scanning electron microscope. Cross sections of the replicas were examined in the light microscopy. Of the 48 replicas (24 of the maxilla and 24 of the mandible), the most severe erosion was found on the first premolars in 62% of the individuals, on second premolars in 19% on cuspids in 12%, and on first molars in 6%. The margin of the defect toward the gingiva was level with or just below and parallel to the gingival crest. The erosion pattern was distinguished by two shapes--an angular lesion with a flattened floor associated with deep lesions (68%), and a rounded, smaller defect with no sharp interior angles and less tooth damage (32%). It is postulated that cervical erosion may result from two different mechanisms--a more common, destructive process, angular and deep; and a less severe, shallow process with rounded form.
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Abstract
Scanning electron microscopy was used to examine factory-sharpened, dulled, and resharpened scalers. The following observations were made: 1. The factory sharpened scalers exhibited metallic extensions from the lateral surface (wire edges). 2. The machine-resharpened instruments resulted in nonfunctional wire edges from the facial surface. Honing produced an exact meeting of facial and lateral surfaces. 3. Hand sharpening, using an Arkansas stone (grit 500) against the lateral surface away from the cutting edge, effected an exact meeting of the facial and lateral surfaces and no evidence of wire edges. 4. From this study an optimum cutting edge for a scaler is characterized as having a smooth, contiguous meeting of the facial and lateral surfaces free of wire edges. If a wire edge is present, it should be functional.
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69
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Brady JM, Cutright DE. Osteogenesis in ceramic implantation--a radioisotope study. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH 1976; 10:977-9. [PMID: 993233 DOI: 10.1002/jbm.820100616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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70
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71
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Brady JM, Cutright DE, Beasley JD, Perez B. Findings in 1,724 buccal smears from dentists. J Am Dent Assoc 1976; 92:1211-2. [PMID: 1064644 DOI: 10.14219/jada.archive.1976.0169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
No changes were found in the epithelial cells from the buccal mucosa of dentists with the use of the light microscope, electron microscope, or electron probe that could be correlated with mercury exposure under the conditions of this test. In a normal population it can be expected that at least 0.01% of the population will show class 2 atypical smears. Patients with class 2 smears have fewer highly matured epithelial cells (tendency toward keratinization) of the buccal mucosa and hence a thinner epithelium.
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72
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Tinanoff N, Brady JM, Gross A. The effect of NaF and SnF2 mouthrinses on bacterial colonization of tooth enamel: TEM and SEM studies. Caries Res 1976; 10:415-26. [PMID: 1066185 DOI: 10.1159/000260234] [Citation(s) in RCA: 84] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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73
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Brady JM, Gray WA, Bhaskar SN. Electron microscopic study of the effect of water jet lavage devices on dental plaque. LE JOURNAL DENTAIRE DU QUEBEC 1976; 13:8-12, 18-22. [PMID: 829834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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74
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Zielke DR, Brady JM, del Rio CE. Corrosion of silver cones in bone: a scanning electron microscope and microprobe analysis. J Endod 1975; 1:356-60. [PMID: 10697486 DOI: 10.1016/s0099-2399(75)80210-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Sections of silver cones were implanted in tibial bone wounds in 36 Sprague-Dawley rats. Groups of six rats each were killed at monthly intervals, and the specimens were examined by scanning electron microscopy and by X-ray microanalysis. The silver cones had corroded rapidly, but they were well tolerated by the tissues. Elements of silver, chlorine, and sulfur were found in the tissues adjacent to the implants.
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75
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Zurbriggen T, del Rio CE, Brady JM. Postdebridement retention of endodontic reagents: a quantitative measurement with radioactive isotope. J Endod 1975; 1:298-9. [PMID: 10697480 DOI: 10.1016/s0099-2399(75)80137-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Forty freshly extracted human teeth were biomechanically prepared for endodontic obturation using a radioisotopically labeled EDTA-urea peroxide-Carbowax compound. The amount of radiolabeled mixture remaining in the canals after through cleansing was about 3.8% of that originally applied. The amount of residue did not decrease with reinstrumentation and irrigation.
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