Factores de riesgo asociados a trastornos temporomandibulares

Temporomandibular disorders are highly frequent, are a major health problem worldwide and are of multifactorial etiology. An observational analytical study of cases and controls was carried out at the Manuel Cedeño Stomatological Specialist Clinic of Bayamo, Granma from March 2015 to December 2016, with the aim of identifying the association of some risk factors with the appearance of temporomandibular disorders in patients with 20 to 59 years old. The universe was constituted by 167 patients and it was shown by 90 individuals, 30 cases and 60 controls. We used binary logistic regression or univariate analysis. The variables used were age, sex, temporomandibular disorders, occlusal conditions, stress and traumas. The age group of 44 to 51 years and the female sex were the most affected by temporomandibular disorders. Occlusal conditions, emotional stress and traumas were highly significant risk factors. There was no risk factor with protective character.Los trastornos temporomandibulares son altamente frecuentes, constituyen un importante problema de salud a nivel mundial y son de etiología multifactorial. Se realizó un estudio analítico observacional tipo casos y controles en la Clínica de Especialidades Estomatológicas Manuel Cedeño de Bayamo, Granma desde marzo 2015 hasta diciembre 2016, con el objetivo de identificar la asociación de algunos factores de riesgo con la aparición de trastornos temporomandibulares en pacientes de 20 a 59 años de edad. El universo estuvo constituido por 167 pacientes y la muestra por 90 individuos, 30 casos y 60 controles. Se utilizó la regresión logística binaria o análisis univariado. Las variables empleadas fueron edad, sexo, trastornos temporomandibulares, condiciones oclusales, estrés y traumas. El grupo de edad de 44 a 51 años y el sexo femenino fueron los más afectados por los trastornos temporomandibulares. Las condiciones oclusales, el estrés emocional y los traumas constituyeron factores de riesgo altamente significativos. No hubo factor de riesgo con carácter protector

Centrality evolution of the charged-particle pseudorapidity density over a broad pseudorapidity range in Pb-Pb collisions at root s(NN)=2.76TeV

Peer reviewe

Production of inclusive ϒ(1S) and ϒ(2S) in p–Pb collisions at √sNN = 5.02 TeV

We report on the production of inclusive Υ(1S) and Υ(2S) in p-Pb collisions at sNN−−−√=5.02 TeV at the LHC. The measurement is performed with the ALICE detector at backward (−4.46<ycms<−2.96) and forward (2.03<ycms<3.53) rapidity down to zero transverse momentum. The production cross sections of the Υ(1S) and Υ(2S) are presented, as well as the nuclear modification factor and the ratio of the forward to backward yields of Υ(1S). A suppression of the inclusive Υ(1S) yield in p-Pb collisions with respect to the yield from pp collisions scaled by the number of binary nucleon-nucleon collisions is observed at forward rapidity but not at backward rapidity. The results are compared to theoretical model calculations including nuclear shadowing or partonic energy loss effects

Coherent ψ(2S) photo-production in ultra-peripheral PbPb collisions at √sNN=2.76 TeV

We have performed the first measurement of the coherent ψ(2S) photo-production cross section in ultra-peripheral PbPb collisions at the LHC. This charmonium excited state is reconstructed via the ψ(2S)→l+l− and ψ(2S)→J/ψπ+π− decays, where the J/ψ decays into two leptons. The analysis is based on an event sample corresponding to an integrated luminosity of about 22 μb−1. The cross section for coherent ψ(2S) production in the rapidity interval −0.9<y<0.9 is dσψ(2S)coh/dy=0.83±0.19(stat+syst) mb. The ψ(2S) to J/ψ coherent cross section ratio is 0.34−0.07+0.08(stat+syst). The obtained results are compared to predictions from theoretical models

Beauty production in pp collisions at √s = 2.76 TeV measured via semi-electronic decays

The ALICE collaboration at the LHC reports measurement of the inclusive production cross section of electrons from semi-leptonic decays of beauty hadrons with rapidity |y|<0.8 and transverse momentum 1<pT<10 GeV/c, in pp collisions at s√= 2.76 TeV. Electrons not originating from semi-electronic decay of beauty hadrons are suppressed using the impact parameter of the corresponding tracks. The production cross section of beauty decay electrons is compared to the result obtained with an alternative method which uses the distribution of the azimuthal angle between heavy-flavour decay electrons and charged hadrons. Perturbative QCD calculations agree with the measured cross section within the experimental and theoretical uncertainties. The integrated visible cross section, σb→e=3.47±0.40(stat)+1.12−1.33(sys)±0.07(norm)μb, was extrapolated to full phase space using Fixed Order plus Next-to-Leading Log (FONLL) predictions to obtain the total bb¯ production cross section, σbb¯=130±15.1(stat)+42.1−49.8(sys)+3.4−3.1(extr)±2.5(norm)±4.4(BR)μb

Measurement of pion, kaon and proton production in proton-proton collisions at √s = 7 TeV

The measurement of primary π±, K±, p and p¯¯¯ production at mid-rapidity (|y|< 0.5) in proton-proton collisions at s√=7 TeV performed with ALICE (A Large Ion Collider Experiment) at the Large Hadron Collider (LHC) is reported. Particle identification is performed using the specific ionization energy loss and time-of-flight information, the ring-imaging Cherenkov technique and the kink-topology identification of weak decays of charged kaons. Transverse momentum spectra are measured from 0.1 up to 3 GeV/c for pions, from 0.2 up to 6 GeV/c for kaons and from 0.3 up to 6 GeV/c for protons. The measured spectra and particle ratios are compared with QCD-inspired models, tuned to reproduce also the earlier measurements performed at the LHC. Furthermore, the integrated particle yields and ratios as well as the average transverse momenta are compared with results at lower collision energies