Lip and tongue pressure and the functionality of oro-facial structures in healthy individuals.

Background: With the ageing process changes in the musculature of oro-facial structures take place, consequently there is a reduction in the strength and mobility of the lips, tongue and cheeks.

Objective: The aim of this study was to correlate oro-facial structures and chewing and swallowing functions among a group of senior citizens and young adults and check the influence of lip and tongue pressure of these functions.

Methods: This is an observational, cross-sectional and analytical study.

Does the initial surface roughness of different CuNiTi wires affect the frictional resistance?

This study aimed to assess and correlate initial surface roughness and frictional resistance of rectangular CuNiTi wires inserted in different self-ligating brackets. The sample consisted of 40 bracket-wire sets (rectangular CuNiTi wires of 0.017" x 0.

Temporomandibular disorder symptoms in the university context.

Objective: To assess the impact of the university context of different academic fields and class times and the sociodemographic context on the symptoms of temporomandibular disorder (TMD).

Methods: A total of 2912 university students, divided into 26 undergraduate courses distributed in the fields of biology and exact and human sciences in the day and night participated in this study. The symptoms of orofacial pain and TMD were assessed using a self-explanatory questionnaire for screening, as recommended by the American Academy of Orofacial Pain.

Upper airways after mandibular advancement orthognathic surgery: A 4-year follow-up.

Introduction: The purpose of this study was to assess the stability of changes in the upper airways 4 years after orthognathic surgery in patients with skeletal Class II malocclusion.

Methods: A retrospective clinical study was conducted including 33 cone-beam computed tomography images from 11 patients (average age of 35.91 years) followed up longitudinally for 4 years.

Women's oral health-related quality of life as a risk factor for TMD symptoms. A case-control study.

Objective: To investigate the association between temporomandibular disorder (TMD) symptoms and women's oral health-related quality of life (OHRQoL).: An observational case-control study was performed with 765 adult women aged 21.5 years on average.

Flexural strength and surface microhardness of materials used for temporary dental disocclusion submitted to thermal cycling: An in vitro study.

Objective: The objective of this study was to evaluate the effect of temperature variation on surface microhardness and resistance to flexion of different materials used for making a temporary dental disocclusion.

Methods: One hundred specimens were made of the following materials (n=20): glass ionomer cement (GIC); compomer (CP); composite resin (CR); Blue colour resin composite for temporary dental disocclusion (BTDD); ultraviolet colour resin composite for temporary dental disocclusion (UVTDD). They were stored in distilled water for 24hours and, subsequently, half of the specimens in each group were subjected to thermal cycling (n=10).

Malocclusion, facial and psychological predictors of quality of life in adolescents.

Objective: To identify clinical and psychological predictors of OHRQoL.

Methods: Cross-sectional clinical and questionnaire study with 332 adolescents aged 11-14 years. The facial profile was classified through photographs and dental malocclusion was classified by the Dental Health Component of the Index of Orthodontic Treatment Need.

Anxiety and oral habits as factors associated with malocclusion.

: The aim of this study was to associate the presence of oral habits with anxiety and malocclusion.: Cross-sectional observational study with 199 schoolchildren 6-14 years old. Malocclusion was evaluated by using the Index of Orthodontic Treatment Need (IOTN).

A retrospective cephalometric study on upper airway spaces in different facial types.

Background: Craniofacial growth pattern has been correlated with variations in size of the upper airway spaces. The objective of this study was to evaluate the nasopharyngeal, oropharyngeal, and hypopharyngeal airway spaces variations according to the craniofacial growth pattern, by comparing brachyfacial, mesofacial, and dolichofacial in Angle Class I individuals.

Methods: To measure the spaces, 45 lateral teleradiographs were used and divided into 3 groups per the craniofacial growth pattern, determined by the Tweed cephalometry angular measurements: FMA and Y-axis.

Real-time three-dimensional jaw tracking in temporomandibular disorders.

When a dysfunction occurs in any component of the stomatognathic system, temporomandibular disorders (TMD) may originate. The aim of this study was to compare the deviations, displacement and the execution speed of mandibular movements among asymptomatic participants and those with TMD. Convenience sampling was used; forty participants diagnosed by clinical evaluation following the Research Diagnostic Criteria for Temporomandibular Disorders were divided into three groups: arthropathy (GART, 10 participants, 40% men), myopathy (GMYO, 10 participants, 30% men), and the control group (CG, 20 asymptomatic participants, 25% men).

Temporomandibular disorders and quality of life among 12-year-old schoolchildren.

Objectives: The aim of this study was to investigate the association between symptoms of temporomandibular disorders (TMD), quality of life, and malocclusion.

Methods: A cross-sectional observational design study was utilized among 248 schoolchildren aged 12 years old. Symptoms of TMD were assessed using the Orofacial Pain and Temporomandibular Disorders Triage Questionnaire, and subjects were further evaluated as oral-health-related quality of life (CPQ), tooth clenching/grinding and malocclusion (Dental Aesthetic Index).

Effect of time of contraction and rest on the masseter and anterior temporal muscles activity in subjects with temporomandibular disorder.

Purpose The main objective of this study was to investigate the effect of time of contraction and rest on the masseter and temporal muscles activity. Methods 49 female subjects between 18 and 30 years of age were divided into TMD (n: 26) and control groups (n: 23). Surface electromyograph was used to evaluate the anterior temporal and masseter muscles during contraction and rest protocols.

Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: a pilot study.

Objective: By means of a photoelastic model, this study analyzed the stress caused on conventional and self-ligating brackets with expanded arch wires.

Method: Standard brackets were adhered to artificial teeth and a photoelastic model was prepared using the Interlandi 19/12 diagram as base. Successive activations were made with 0.

Influence of craniomandibular and cervical pain on the activity of masticatory muscles in individuals with Temporomandibular Disorder.

Purpose: This study aimed to establish the prevalence of pain in the craniomandibular and cervical spine region in individuals with Temporomandibular Disorders (TMD) and to analyze the effects of these disorders on the bilateral activation of anterior temporalis (AT) and masseter (MA) muscles during the masticatory cycle.

Methods: The participants were 55 female volunteers aged 18-30 years. The presence of TMD and craniomandibular and cervical spine pain was evaluated by applying the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) questionnaire and using a combination of tests for the cervical region.

Antimicrobial effect of Melaleuca alternifolia dental gel in orthodontic patients.

The aim of this study was to evaluate the antimicrobial effect and sensorial analysis of the gel developed with the essential oil of Melaleuca alternifolia. Thirty-four volunteers, divided into 2 groups, were monitored for 4 weeks. Initially, clinical biofilm (plaque index) and saliva samples (bacteria count) were collected, from which the standard values for each patient were obtained.

[Removal of sucking habits and myofunctional therapy: establishing swallowing and tongue rest position].

Background: The prolonged habit of pacifier sucking and the prolonged use of feeding bottle may cause myofunctional disorder, such as incorrect swallowing pattern and inadequate tongue rest position.

Aim: To study the effect of myofunctional therapy (MFT) associated with the removal of the habit of pacifier sucking and the use of feeding bottle (REM) on the rehabilitation of swallowing and tongue rest position.

Method: Two groups with ten children, ages ranging from four to four years and eight months, who initially presented a pacifier sucking habit and used the feeding bottle were studied.

Prevalence of pacifier-sucking habits and successful methods to eliminate them--a preliminary study.

Purpose: The goal of this study was to verify the prevalence of nutritive (breast-feeding and bottle-feeding) and non-nutritive (pacifier) sucking habits, the methods used to eliminate them, and success of these methods.

Methods: To collect the data, 502 questionnaires were distributed to parents of 0- to 6-year-old children.

Results: Bottle-feeding was used by 83% and pacifier by 63% of children.