Using feldspathic ceramic masses in frontal group restorations

Scop: Scopul acestui studiu a fost de a alege și aplica metoda cea mai optimă de tratament a pacienţilor cu dereglări estetice a grupului frontal de dinţi. Materiale și metode: În studiu au participat 15 pacienţi, dintre care 8 pacienţi de sex F și 7 de sex M , ulterior ei au fost divizaţi în două loturi: — în primul lot au fost incluși 10 pacienţi trataţi cu microproteze fixe (coroane) integral ceramice, în cel de al doilea grup au fost incluși 5 pacienţi trataţi cu ajutorul vinirilor feldspatice. Microprotezele au fost prelucrate cu acid ortofosforic 38% și fixate cu ciment adeziv. Evaluarea clinică a restaurărilor s-a realizat la momentul iniţial și după 3,6 ,12 luni de la tratament. Au fost analizate următoarele criterii: integritatea marginală, sensibilitatea dinţilor, fracturile restaurărilor. Rezultate: Reabilitările funcţionale și estetice au fost realizate cu ajutorul a microprotezelor fixe integral ceramice și vinirelor feldspatice. Integritatea marginală a fost păstrată la pacienţii cu ambele tipuri de restaurări. Pe parcursul timpului evaluat ţesuturile moi nu au prezentat nici o modificare. Apariţia cariilor nu a fost observată, precum și nici o modificare patologică periapicală si nici o sensibilitate. La un pacient tratat cu vinire feldspatice, unghiul incizal distal a fost fracturat. Nu s-au observat modificări semnificative între cele două grupuri de studiu. Concluzie: Satisfacţia pacientului și o bună integrare a restaurărilor indirecte au confirmat succesul acestei reabilitari. Cimentarea în limitele smalţului e mai rezistentă la fracturare decît cimentarea în limitele dentinei. Ambele tipuri de restaurări posedă o capacitate de durabilitate în timp.Purpose: The purpose of this study was to choose and apply optimal method of the treatment in patients with esthetic disorders. Materials and Methods: 15 patients were examined and treated, 8 of them were males and 7 — females. These patients were divided into two groups: — the first group included 10 patients treated with full ceramic crowns, and second group included 5 patients treated by feldspathic veneers. All restorations were etched, silanized and adhesively luted using a self-etching, dual-cure, fluoride-releasing cement. Clinical evaluation of the restorations was performed at baseline and 3,6,12 months after luting, where were analyzed following criteria: marginal integrity, sensitivity of teeth, fractures restorations. Results: Functional and aesthetic rehabilitation were achieved using a full ceramic crowns and feldspathic veneers. Marginal integrity has been preserved in patients with both types of restorations. During evaluated time soft tissues didn’t present any changes. No caries recurrence, no periapical pathology, no sensitivity were observed. In a patient with feldspathic veneers restoration, distal incisal angle was fractured. No significant changes were observed between these two groups of study. Conclusion: The patient satisfaction and good integration of indirect restorations confirmed the success of this rehabilitation. Luting ceramic to enamel provided higher fracture resistance than luting to dentin. Both, and porcelain veneers, and dental crowns are lifelong commitment

Particularitățile încărcării protetice progresive a implantelor osteointegrate în tratamentul protetic al edentațiilor parțiale intercalate

Rezumat. Rolul încărcării protetice progresive este de a minimaliza sarcinile transmise implantelor endoosoase și o maturizare optimă a interfeţei osimplant. Scopul acestui studiu a fost de a evalua densitatea osului disponibil prin intermediul computertomografiei cu aprecierea etapelor destinate încărcării protetice progresive în cadrul tratamentelor implanto-protetice a edentaţiilor parţiale intercalate. Au fost examinaţi complex și selectaţi 12 pacienţi cu vârsta cuprinsă între 28-56 ani cu edentaţii parţiale intercalate. În dependenţă de topografia edentaţiilor, pacienţii au fost sistematizaţi în 3 loturi de studiu. Pacienţilor li s-au efectuat tratamente implanto-protetice cu implante endoosoase de stadiul II de tipul „Alpha-Bio“. Evaluarea preimplantară a densităţii osoase a stat la baza planificării etapelor încărcării protetice progresive recomandate de către Misch. În dependenţă de topografia edentaţiilor parţiale s-au realizat contacte ocluzale respectînd conceptele ocluzale specifice implantologiei orale. Monitorizarea computertomografică la distanţă de 1 an posttratament a relevat rezorbţii osoase neînsemnate.Summary. Prosthetic loading progressive role is to minimize the tasks submitted endosseus implants and bone maturation optimal interface/implant. The purpose of this study was to evaluate bone density available through computertomography appreciation for charging stagesin the progressive prosthetic implant-prosthetic treatment of edentulous partial interspersed Complex were examined and selected 12 patients aged 28-56 years with partial edentulous interspersed.Depending on the topography toothless,patients were grouped in three study groups.Patients were performed to implant prosthetic implant treatment stage endobones type II Alpha-Bio.Preimplantation assessment of bone density behind the planning stages of progressive proshetic load recommended by Misch. Depending on the topography of partial edentulous occlusal contacts were made respecting the specific occlusal concepts of oral implantology. Remote Monitoring C.T. scan 1 year post-treatment revealed resorbsion

The Dynamics of Network Topology

Network monitoring is vital to ensure proper network operation over time, and is tightly integrated with all the data intensive processing tasks used by the LHC experiments. In order to build a coherent set of network management services it is very important to collect in near real-time information about the network topology, the main data flows, traffic volume and the quality of connectivity. A set of dedicated modules were developed in the MonALISA framework to periodically perform network measurements tests between all sites. We developed global services to present in near real-time the entire network topology used by a community. For any LHC experiment such a network topology includes several hundred of routers and tens of Autonomous Systems. Any changes in the global topology are recorded and this information is can be easily correlated with traffic patterns. The evolution in time of global network topology is shown a dedicated GUI. Changes in the global topology at this level occur quite frequently and even small modifications in the connectivity map may significantly affect the network performance. The global topology graphs are correlated with active end to end network performance measurements, done with the Fast Data Transfer application, between all sites. Access to both real-time and historical data, as provided by MonALISA, is also important for developing services able to predict the usage pattern, to aid in efficiently allocating resources globally

Azimuthal anisotropy of charged jet production in root s(NN)=2.76 TeV Pb-Pb collisions

We present measurements of the azimuthal dependence of charged jet production in central and semi-central root s(NN) = 2.76 TeV Pb-Pb collisions with respect to the second harmonic event plane, quantified as nu(ch)(2) (jet). Jet finding is performed employing the anti-k(T) algorithm with a resolution parameter R = 0.2 using charged tracks from the ALICE tracking system. The contribution of the azimuthal anisotropy of the underlying event is taken into account event-by-event. The remaining (statistical) region-to-region fluctuations are removed on an ensemble basis by unfolding the jet spectra for different event plane orientations independently. Significant non-zero nu(ch)(2) (jet) is observed in semi-central collisions (30-50% centrality) for 20 <p(T)(ch) (jet) <90 GeV/c. The azimuthal dependence of the charged jet production is similar to the dependence observed for jets comprising both charged and neutral fragments, and compatible with measurements of the nu(2) of single charged particles at high p(T). Good agreement between the data and predictions from JEWEL, an event generator simulating parton shower evolution in the presence of a dense QCD medium, is found in semi-central collisions. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Peer reviewe

Production of He-4 and (4) in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

Results on the production of He-4 and (4) nuclei in Pb-Pb collisions at root(NN)-N-S = 2.76 TeV in the rapidity range vertical bar y vertical bar <1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0-10% central events are found to be dN/dy4(He) = (0.8 +/- 0.4 (stat) +/- 0.3 (syst)) x 10(-6) and dN/dy4 = (1.1 +/- 0.4 (stat) +/- 0.2 (syst)) x 10(-6), respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (T-chem = 156 MeV) as for light hadrons. The measured ratio of (4)/He-4 is 1.4 +/- 0.8 (stat) +/- 0.5 (syst). (C) 2018 Published by Elsevier B.V.Peer reviewe

Forward-central two-particle correlations in p-Pb collisions at root s(NN)=5.02 TeV

Two-particle angular correlations between trigger particles in the forward pseudorapidity range (2.5 2GeV/c. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B. V.Peer reviewe

Event-shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at root(NN)-N-S=2.76 TeV

Peer reviewe

Elliptic flow of muons from heavy-flavour hadron decays at forward rapidity in Pb-Pb collisions at root s(NN)=2.76TeV

The elliptic flow, v(2), of muons from heavy-flavour hadron decays at forward rapidity (2.5 <y <4) is measured in Pb-Pb collisions at root s(NN)= 2.76TeVwith the ALICE detector at the LHC. The scalar product, two- and four-particle Q cumulants and Lee-Yang zeros methods are used. The dependence of the v(2) of muons from heavy-flavour hadron decays on the collision centrality, in the range 0-40%, and on transverse momentum, p(T), is studied in the interval 3 <p(T)<10 GeV/c. A positive v(2) is observed with the scalar product and two-particle Q cumulants in semi-central collisions (10-20% and 20-40% centrality classes) for the p(T) interval from 3 to about 5GeV/c with a significance larger than 3 sigma, based on the combination of statistical and systematic uncertainties. The v(2) magnitude tends to decrease towards more central collisions and with increasing pT. It becomes compatible with zero in the interval 6 <p(T)<10 GeV/c. The results are compared to models describing the interaction of heavy quarks and open heavy-flavour hadrons with the high-density medium formed in high-energy heavy-ion collisions. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V.Peer reviewe