1,721,006 research outputs found
Antonio Garlini, Studi sulla tradizione antica e medievale del Fedone
No full textdes Places Edouard. Antonio Garlini, Studi sulla tradizione antica e medievale del Fedone. In: L'antiquité classique, Tome 42, fasc. 1, 1973. pp. 234-235
Key Factors for Predictable Aesthetics in Single Tooth Immediate Implantation with Provisionalization
No full textEarly implant placement is one treatment option for implant therapy following a single-tooth extraction in the anterior maxilla. In this article some key factors are presented to analyze and follow in an effort to obtain a predictable and acceptable esthetic result. The creation of predictable peri-implant esthetics requires proper preservation of the osseous and soft tissues around the failing teeth, proper 3-D implant placement and proper understanding of the prosthetic management. The surgical technique presented here is characterized by tooth extraction without flap elevation, implant placement in a correct three-dimensional position, simultaneous contour augmentation on the facial aspect with connective tissue grafting combined with heterologous bone chips filled into the implant bone gap
Maxillary sinus floor augmentation with vegetal hydroxyapatite “versus” demineralized bovine bone : a randomized clinical study with a split-mouth design
Full text linkPurpose: The objective of this paper was to compare histologically and histomorphometrically a
hydroxyapatite originated by algae (Algipore) versus demineralized bovine bone (Bio-Oss Geistlich
Pharma, Wolhusen, Switzerland) utilised as bone substitutes in maxillary sinus floor elevation with
a split-mouth design.
Materials and Methods: Five healthy patients underwent a bilateral maxillary sinus floor elevation
procedure under local anesthesia. In each case, residual posterior maxillary bone height was between 2 mm and 5 mm. The original bone was augmented with a split-mouth design with 100% Algipore on the test side and 100% Bio-Oss on the contralateral control side. After a healing period of 6-8 months during the re-opening surgery biopsies were retrieved and Xive Implants (Dentsply Implants, Mannheim, Germany) were placed.
Results: At microscopic level both Bio-Oss and Algipore blocks resulted well osseointegrated,
without inflammatory infiltrate, with an high level of mineralization, without gap between the bone
and biomaterial interfaces that resulted indistinguishable. A close contact between the two faces was
observed without the presence of slits. Histomorphometrical analysis showed that, on average, the
percentage of medullary space was higher for the Bio-Oss compared with Algipore (38.61% ±8.90%
vs. 29.23% ±7.89%). In contrast, the mean value of residual particles of biomaterials was higher in
Algipore than in Bio-Oss specimens (42.86% ±18.61% vs. 22.30% ±6.40% respectively).
Conclusions: The data confirmed that sinus lift carried out with Algipore performed in a similar way
of that carried out with Bio-Oss and that this material is safe, predictable and without invasiveness
Dynamic Resource Allocation for Deadline-Constrained Neural Network Training
Full text linkNeural networks (NN) serve as the backbone for various applications, including computer vision, speech recognition, and natural language processing. Due to their iterative nature, training NNs is a highly compute-intensive task that is typically executed using a statically allocated set of devices (e.g., CPUs or GPUs). This static allocation prevents adjusting priorities, making it impossible to reassign resources to urgent tasks, and potentially causing high-priority training jobs to miss their expected completion times. This paper proposes DECOR-NN (DEadline COnstrained Resource allocation for Neural Networks), a control mechanism for NN training that dynamically allocates resources according to a user-defined deadline (i.e., a Service Level Agreement), ensuring that the training phase completes within the specified time. The solution leverages control theory and has been developed on top of PyTorch, a widely-used framework for training NNs. DECOR-NN dynamically allocates either GPUs or fractions of CPUs to meet user deadlines and also allows users to modify the deadline at runtime to accommodate changes in job priorities. A comprehensive empirical evaluation using three benchmark applications demonstrates that DECOR-NN successfully completes training jobs with an average deviation from the deadline of only 1.75 %
Granular deproteinized bovine bone for horizontal ridge augmentation: a non-conventional clinical technique (Impiego di osso bovino deproteinizzato granulare negli incrementi orizzontali: presentazione di una tecnica non convenzionale)
No full textMaxillary sinus elevation with an alloplastic material and implants: 11 years of clinical and radiologic follow-up
No full textPurpose: The aim of this retrospective study was to determine the clinical and radiologic results, over an 11-year period, of resorbable hydroxyapatite used as a bone substitute in maxillary sinus elevation. Materials and Methods: Between 1996 and 2007, we treated 26 patients with maxillary sinus elevation (27 sinuses) using resorbable hydroxyapatite and simultaneous insertion of 47 titanium implants. Patients were recruited, screened, and accepted or rejected sequentially based on specific inclusion/exclusion criteria. Ten months later, 2-stage surgery and prosthetic rehabilitation were performed. Results: During the 11-year follow-up period (mean, 6 years), all the implants appeared clinically and radiologically integrated. The cumulative survival rate was 100%. During the observation period, the resorption of the graft apically to the implant was 1.8 mm on average. Conclusion: The posterior area of the maxilla often represents a challenging clinical situation because of either the lack of alveolar bone or the structural characteristics of the trabeculae in that specific area. The high survival rate of the implants and the stability of the mineralization of the graft confirmed that resorbable hydroxyapatite was a suitable material for sinus grafting
- …
