177,209 research outputs found
Le tetracicline nel trattamento della malattia parodontale
No full textIn these last years tetracycline have been frequently utilized in the treatment of periodontal deceases. In this article, the most important results of clinical and microbyological researches on its therapeutic effectiveness are reporte
[Importance of dental prophylaxis with hemophiliacs. Assessment of precautionary standards by health personnel].
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Importanza della profilassi odontostomatologica nei pazienti affetti da emofilia. Valutazioni sulle norme cautelative del personale sanitario
No full textFurther information is presented on the primary importance of dental prophylaxis in hemophilia patients. The precautionary measures available to regular medical staff at risk are also evaluate
Lichen Planus orale ed epatopatie croniche.Indagine clinico-statistica Matarasso S.,Dante G.,Fusco A.,Martuscelli R. Minerva Stomatologica 38,795-799
No full textStudio su di una modalità di approccio clinico-diagnostico di tipo interdisciplinare nei confronti del paziente affetto da LP orale di tipo erosiv
Small RNA-mediated influence of pyocin S3 production and UV sensitivity in Pseudomonas aeruginosa PA14
No full textPyocins are narrow-spectrum bacteriocins synthesized by most isolates of Pseudomonas aeruginosa and are presumed to play a role in niche establishment and protection in mixed populations. P. aeruginosa pyocins can be subdivided into insoluble R and F pyocins and soluble S pyocins. The majority of S-type pyocins (AP41, S1, S2, and S3) cause cell death by DNA cleavage due to an endonuclease C-terminal domain, while pyocins S4 and S5 have tRNAse and pore-forming activities, respectively. Pyocin-producing strains are protected from their own toxin by an immunity protein encoded by a gene usually located downstream the pyocin gene. Pyocin production can be induced by agents that cause DNA damage such as UV irradiation and mitomycin C.
In this study, we show that the new small RNA SPA0021, which is transcribed within the pathogenicity island PAPI-1 of P. aeruginosa strain PA14, influences positively the expression of pyocin S3 whose genetic locus comprises two structural genes, pyoS3A and pyoS3I; encoding the killing (S3A) and the immunity (S3I) proteins, respectively. Interestingly, the deletion of SPA0021 gene resulted in increased sensitivity to UV irradiation and to the fluorochinolone antibiotic ciprofloxacin. The degree of UV sensitivity displayed by the PA14 strain lacking SPA0021 was comparable to that of a strain deleted for pyoS3A pyoS3I. These results suggested an involvement of pyocin S3 in DNA damage repair and a regulatory role of SPA0021 on this function
Postoperative pain and early and late complications related to the avulsion of impacted third molars
No full textSingle tooth implant restoratin in the esthetic zone with immediate provisionalization:a clinical report
No full textObjectives: This clinical report describes a single-tooth implant restoration in a fresh extraction socket in the anterior
maxilla, with immediate provisionalization and CAD-CAM zirconia final prosthesis.
Methods and Materials: Due to a traumatic injury, an esthetically concerned 40 year-old female patient was treated
with an atraumatic extraction of a maxillary central incisor, which was immediately substituted with a single implant.
Immediate provisionalization was performed using a screw-retained resin crown. Two months after surgery, the
patient was fitted with a final all-ceramic single crown cemented on a CAD-CAM customized zirconia abutment.
Results: Healing was predictable, with the implant neither showing mobility nor presenting pain. The zirconia crown
was undamaged. The patient was pleased with treatment time and esthetic result.
Discussion: Implant treatment with immediate provisionalization offers several advantages: optimal esthetics is
achievable as bone and soft tissue architecture is maintained; patients are provided with a fixed temporary restoration
at the time of surgery; treatment time is shortened, as second stage surgery is eliminated. Furthermore, the fresh
extraction socket is a metabolically active region with good potential for bone repair and successful implant
placement.
Conclusions: Optimal mechanical performances and excellent esthetics were achieved in the anterior sites by means
of a CAD-CAM zirconia customized abutment and crown
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