93,154 research outputs found
Immediate loading of dental implants placed in severely resorbed edentulous mandibles reconstructed with autogenous calvarial grafts
No full textObjective: The aim of this prospective study was to present the clinical outcome of
immediately loaded dental implants placed in edentulous, severely atrophied mandibles,
after reconstruction with autogenous multilayered calvarial grafts.
Materials and methods: Six patients, two males and four females, aged 40–67 years (mean:
56 years) presenting with severely atrophied edentulous mandibles (Cawood and Howell
class VI), were reconstructed with multilayered calvarial bone grafts placed in the
intraforaminal area of the mandible. Five to 8 months afterwards, 23 dental implants were
placed in the reconstructed areas (three to four implants per patient) and immediately
loaded with implant-supported overdentures. Patients were followed with clinical and
radiographic controls annually.
Results: Recovery after the reconstruction was uneventful in all patients. All 23 implants
were osseointegrated 1–3 years after the start of immediate loading. The survival and
success rates of implants were 100% and 95.7%, respectively.
Conclusion: Results from this study showed that immediate loading of dental implants
placed in severely atrophied edentulous mandibles reconstructed with calvarial bone grafts
is a predictable procedure, which permits a successful dental rehabilitation with a
shortening of treatment times.
In the last decade, immediate loading of
dental implants has confirmed to be a
reliable means for the rehabilitation of
partially or totally edentulous patients (Balshi
& Wolfinger 1997; Chiapasco et al.
1997, 2001; Schnitman 1997; Tarnow
et al. 1997; Gatti et al. 2000; Jaffin et al.
2000; Malo` et al. 2000; Chiapasco 2004).
The shortening of treatment times without
jeopardizing the long-term survival of
dental implant
Optimum filters for detector charge measurements in presence of 1/f noise
No full textThe optimum shape of the weighting function for detector charge measurements, in the presence of series 1/f noise superimposed on parallel and series white noises, is investigated. The corresponding theoretical limits in charge resolution for finite or infinite processing times have been calculated, and compared with the values obtained using traditional cusplike weighting functions optimum for white noises onl
Unemployment and Innovation Patterns. The role of business coordination and market Competition
No full textValidation and Performance Comparison of Two Scoring Systems Created Specifically to Predict the Risk of Deep Sternal Wound Infection after Bilateral Internal Thoracic Artery Grafting
No full textBackground: The Gatti and the bilateral internal mammary artery (BIMA) scores were created to predict the risk of deep sternal wound infection (DSWI) after bilateral internal thoracic artery (BITA) grafting. Methods: Both scores were evaluated retrospectively in two consecutive series of patients undergoing isolated multi-vessel coronary surgical procedures - i.e., the Trieste (n = 1,122; BITA use, 52.1%; rate of DSWI, 5.7%) and the Besançon cohort (n = 721; BITA use, 100%; rate of DSWI, 2.5%). Baseline patient characteristics were compared between the two validation samples. For each score, the accuracy of prediction and predictive power were assessed by the area under the receiver-operating characteristic curve (AUC) and the Goodman-Kruskal gamma coefficient, respectively. Results: There were significant differences between the two series in terms of age, gender, New York Heart Association functional class, chronic lung disease, left ventricular function, surgical priority, and the surgical techniques used. In the Trieste series, accuracy of prediction of the Gatti score for DSWI was higher than that of the BIMA score (AUC, 0.729 vs. 0.620, p = 0.0033). The difference was not significant, however, in the Besançon series (AUC, 0.845 vs. 0.853, p = 0.880) and when only BITA patients of the Trieste series were considered for analysis (AUC, 0.738 vs. 0.665, p = 0.157). In both series, predictive power was at least moderate for the Gatti score and low for the BIMA score. Conclusions: The Gatti and the BIMA scores seem to be useful for pre-operative evaluation of the risk of DSWI after BITA grafting. Further validation studies should be performed
Can electron delocalization be revealed through the Source Function?
No full textThe Source Function (SF) [1,2] enables one to view chemical bonding and other chemical paradigms under a new perspective and using only information from the electron density observable, rho, and its derivatives. Being completely independent from the tools used to get rho, the SF represents a very useful descriptor, able in many cases to bridge the gap between the rich information ine gains from an ab-initio wavefunction of an ideal system and that, quite often more limited, but referred to a real system, obtained from an experimental rho derived from X-ray diffraction data.
The potential uses of SF are, however, not fully explored. In this lecture we discuss our recent work where the question of wheter the SF is or not capable to reveal electron delocalization has been addressed [3,4].
[1] R. F. W. Bader, C. Gatti, Chem. Phys. Lett. 1998, 287, 233-238. [2] C. Gatti, C. Cargnoni et al., J. Comput. Chem. 2003, 24, 422-436. [3] C. Gatti, Struct. Bond. 2011, 1, DOI: 10.1007/430_2010_31 [4] E. Monza, C. Gatti, L. Lo Presti, E. Ortoleva, J. Phys. Chem. Article ASAP DOI: 10.1021/jp204000d, Richard Bader's Festchrifte issu
I gatti romani di Saša Černyj. Analisi linguistico-stilistica del racconto "Il pensionato per gatti"
No full textLo studio ricostruisce l'ambientazione del racconto romano di Saša Čërnyj "Il pensionato per gatti" e delinea le principali caratteristiche letterarie e formali del genere della fiaba per adulti che l'autore coltivò nell'emigrazione
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