Biomedical subjects
Publications and source records attributed to M Paolantonio.
In a short-term longitudinal study the authors intended to compare the effectiveness in controlling plaque formation and gingival inflammation of a 1% chlorhexidine gel to the one of a 0.2% chlorhexidine solution. The gel, used once a day, resulted as good as the chlorhexidine solution, but showed a localized activity.
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The authors, through a critical review of the literature, describe the effects of antiinflammatory drugs on periodontal disease as they result from experimental trials and epidemiological observations. Furthermore the authors emphasize the possible application of such pharmacological substances in the near future as an additional instrument in the therapy of periodontal disease.
The Authors, through a review of the literature, analyzed the role played by Endotoxins in the pathogenesis of the periodontal lesions. It is furthermore considered the therapeutic problem of the necessity of a complete removal of such substances from the dental root in arder to obtain a radicular surface which could allow a good healing of the periodontal lesions.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
The authors report on the clinical and histologic features of a single implant replacing a mandibular molar, which fractured after a 1-year loading period. Because of anatomic factors, the implant had been placed in an angulated position. The histologic examination showed a very high percentage of bone-implant contact. The bone located at the interface with the implant was mature, compact, and had few marrow spaces. No resorption areas were present, and no connective tissue was seen at the interface. Most likely, the lateral nonaxial forces exerted on the implant created very high bending moments. These forces produced a fracture of the implant, although no loss of osseointegration was observed at the interface.
The aim of this study was to make a comparative analysis between the bone response to machined and sandblasted implants. The sandblasting was done with 150-microns aluminum oxide particles. Under scanning electron microscopic examination, the machined implants presented typical machining grooves, while a very rough, highly irregular surface with depressions and indentations was present on the sandblasted implants. Light microscopy showed a different bone growth pattern on machined (implantopetal growth) and sandblasted (implantofugal growth) implants. No negative effects on the rate of bone growth were observed in spite of the presence of aluminum ions. The histomorphometric analysis showed that sandblasted implants presented, from the third week onwards, a significantly higher contact percentage (P < .0001). These values could point to higher osteoconductivity as a result of the higher surface roughness of sandblasted surfaces.