Background: Transverse deficiencies of the maxillary basal bone have been treated in adult patients using miniscrew-assisted rapid palatal expansion (MARPE) therapy. However, the midpalatal suture's degree of ossification may affect the upper airway dimensions. This study compared the volumetric changes of the total upper, retropalatal, retroglossal airways, and the minimal transverse airway constriction after MARPE therapy in patients with midpalatal suture in the last stages of ossification.
View Article and Find Full Text PDFBMC Oral Health
August 2021
Background: Among the methods currently available to provide fluoride in population levels, fluoridated water is the most successful for presenting high efficacy, safety and good cost-benefit. However, recent studies on external control have shown great variability of fluoride concentrations in the water from treatment stations in Brazilian cities, which must present concentration between 0.6 and 0.
View Article and Find Full Text PDFRheumatology (Oxford)
September 2020
Objectives: Cytokines released by infiltrating T cells may promote mechanisms leading to fibrosis in scleroderma. The aim of this study was to investigate the role of the Th2 cytokine IL-31, and its receptor IL-31RA, in scleroderma skin and lung fibrosis.
Methods: IL-31 was measured by ELISA of plasma, and by immunochemistry of fibrotic skin and lung tissue of scleroderma patients.
Context: Bracket debonding is a common problem during orthodontic treatment. This type of failure is associated to masticatory forces, poor adhesion, and the need for repositioning the piece.
Aims: The objective of this work was to compare the shear bond strength of debonded brackets that were reconditioned using different protocols (alumina blasting versus hydrofluoric etching).
Background: This study aimed to analyze six commercial brands of latex elastics regarding force degradation based on the time factor, in time intervals of 12, 24, 48, and 72 hours.
Methods: The elastics were stretched by three times their diameter, measured, immersed in artificial saliva at 37° C, and stored in a glass container. Data obtained were described by mean parameters, standard deviation, degradation rate, and coefficient of variation and Tukey's post-hoc Test (P<0.
Study Objectives: Although volumetric changes of the upper airway occur following surgical advancement of the maxilla, few studies investigated these changes using three-dimensional imaging techniques. Thus, the goal of this study was to verify whether the surgical advancement of the maxilla affects the volume of the upper airway and to determine any association of these volume changes with sex and age.
Methods: Preoperative and postoperative cone-beam computed tomography (CBCT) scans of 14 patients (8 male and 6 female) who underwent maxillary advancement to correct skeletal class III deformities were assessed to determine the postoperative volumetric changes in the upper airway.
Eur Arch Otorhinolaryngol
January 2017
Background: this study aimed to analyze, six commercial brands of latex elastics regarding force degradation according to time, immediately and in time intervals of 12, 24, 48, and 72 hours.
Methods: the elastics were stretched by three times their diameter, measured, immersed in artificial saliva at 37 °C, and stored in a glass container. Data obtained were described by mean parameters, standard deviation, degradation rate, and coefficient of variation and Tukey's post hoc test (p<0.
Eur Arch Otorhinolaryngol
January 2017
Postsurgical changes of the airways have become a great point of interest because it has been reported that maxillomandibular advancement surgery can improve or eliminate obstructive sleep apnea; however, its treatment effectiveness is still controversial. The purpose of this systematic review and meta-analysis was to assess the effectiveness of maxillomandibular advancement surgery to increase upper airway volume in adults, comparing before and after treatment. Bibliographic searches of observational studies with no restriction of year or language were performed in the electronic databases PubMed, Scopus, ScienceDirect and SciELO for articles published up to April 2015.
View Article and Find Full Text PDFObjective: To analyze a possible correlation between different measures in the definition of vertical facial types.
Materials And Methods: This is an analytical observational study about 95 lateral teleradiographs of Caucasian individuals with normal occlusion, of which 54 were male (56.84%) and 41 female (43.
Objective: This study was aimed to evaluate the perception of orthodontists and of lay people about the facial profile and its possible correlation with cephalometrics parameters.
Materials And Methods: A total of 20 evaluators were divided into two groups (10 orthodontists and 10 people with no relation to such area - lay people). They were asked to evaluate the photographs of 25 young males and of 25 young females, aged 17-24-year-old (mean age of 22.
An increasingly number of patients with Angle Class II has been seeking orthodontic clinics to have their malocclusion treated. Herein, it is presented a new method of promote distal movements in maxillary molars with a combination of limp-bumper (LB) and mini screw. This technique was proven to be fast, practical and with low-cost, thus favoring both the professional and the patient.
View Article and Find Full Text PDFPurpose: The aim of this study was to test the null hypothesis that there is no change in the lower anterior teeth's crown size when measured just after the treatment with Frankel-2's orthopedic appliance and in a long-term posttreatment follow-up.
Materials And Methods: The sample was composed of 34 plaster models belonging to 9 male and 8 female individuals, treated at the College of Health, Methodist University of São Paulo, São Bernardo do Campo, São Paulo, Brazil, with mean age of 12 years and 6 months (standard deviation [SD] =7 months) at T1 (end of the treatment with Frankel-2's function regulator), and 19 years and 8 months (SD = 7 months) at T2 (7.11 years after the end of the treatment).
Fixed protruding appliances are interesting tools for correction of Class II dental malocclusion in adult and growing patients. The appliances most commonly used for this purpose are: Herbst, Forsus and Jasper Jumper. The present clinical case report shows an alternative called Twin Force Bite Corrector which was used for 3 months by a patient aged 10 years and 6 months associated with the Andrews prescription fixed appliance (Abzil 3M).
View Article and Find Full Text PDFIntroduction: After promulgation and wider dissemination of the Code of Consumer Protection (CCP), there was an increase in the number of legal conflicts between patients and dentists, leading these health professionals to increasingly guard themselves from possible lawsuits. As such, it becomes critical the preparation of an adequate and complete clinical record, even though the keeping time remains uncertain.
Objective: To review the literature and discuss the keeping time of orthodontic records versus the legal time for their prescription, as well as to propose a model of a Term upon Completion of Dental Treatment.
Rheumatology (Oxford)
February 2011
Objectives: B cells play an important role in the perpetuation of RA, particularly as autoantibody-producing cells. The ICs that further develop deposit in the joints and aggravate the inflammatory process. However, B-cell contribution in the very early stage of the disease remains unknown.
View Article and Find Full Text PDFIntroduction: Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease characterized by sustained synovitis. Recently, several studies have proposed neutrophils and Th17 cells as key players in the onset and perpetuation of this disease. The main goal of this work was to determine whether cytokines driving neutrophil and Th17 activation are dysregulated in very early rheumatoid arthritis patients with less than 6 weeks of disease duration and before treatment (VERA).
View Article and Find Full Text PDFIschemia-reperfusion of the intestine produces a set of inflammatory mediators, the origin of which has recently been shown to involve pancreatic digestive enzymes. Matrix metalloproteinase-9 (MMP-9) participates in a variety of inflammatory processes including myocardial, hepatic, and pancreatic ischemia-reperfusion. In the present study, we explore the role of neutrophil-derived MMP-9 in acute intestinal ischemia-reperfusion and its interaction with pancreatic trypsin.
View Article and Find Full Text PDFBackground: Sepsis is accompanied by severe inflammation whose mechanism remains uncertain. We recently demonstrated that pancreatic proteases in the ischemic intestine have the ability to generate powerful inflammatory mediators that can be detected in the portal vein and in the general circulation. This study was designed to examine several circulatory and inflammatory indices during experimental endotoxemia and intraintestinal pancreatic protease inhibition.
View Article and Find Full Text PDFShock is associated with a dramatic rise in the level of inflammatory mediators found in plasma. The exact source of these mediators has remained uncertain. We recently examined a previously undescribed mechanism for production of inflammatory mediators in shock involving pancreatic digestive enzymes.
View Article and Find Full Text PDFUnlabelled: Previous reports have shown several hemorheological and hemostatic abnormalities in acute coronary syndrome survivors. Some of these abnormalities were related to cardiovascular events during a 24-month follow-up. The aim of the present work is to evaluate, in transmural myocardial infarction survivors, the long-term (60 months) prognostic value of the biohemorheological profile determined at hospital discharge.
View Article and Find Full Text PDFIntestinal ischemia contributes to shock-induced multiple organ failure. Our recent evidence suggests that pancreatic proteases may be involved in the formation of inflammatory activators within an ischemic intestine. These inflammatory mediators are released early into the circulation and may contribute to the severe systemic inflammatory response syndrome (SIRS) during shock.
View Article and Find Full Text PDFIntroduction: Previous reports have shown several biohemorheological disturbances in acute myocardial infarction (AMI), either in the acute phase and after hospital discharge. There is no clearly established relationship between these parameters and the patients' clinical outcome.
Objective: To evaluate in transmural AMI survivors, a relationship between biohemorheological parameters and the cardiovascular events curve during a 24 month follow-up period.