Dentoskeletal effects of miniscrew-anchored maxillary protraction: Evaluating the role of mandibular anchorage bar and night facemask.

Introduction: This study evaluated the dentoskeletal effects of miniscrew-anchored maxillary protraction, which included a mandibular anchorage bar and a night facemask in adolescents.

Methods: A total of 20 growing patients with Class III malocclusion and maxillary deficiency were treated with a hybrid hyrax expander with 2 miniscrews in the maxilla and a mandibular anchor bar supported in 2 miniscrews in the anterior region of the mandible. Class III elastics were used from the maxillary first molars to the mandibular anchorage bar, joining the mandibular miniscrews installed between permanent incisors and canines.

Three-dimensional analysis of posterior tooth inclinations in transverse and sagittal relationships: A cross-sectional study.

Objective: To compare tooth inclinations in different sagittal skeletal patterns and transverse maxillary relationships three-dimensionally.

Methods: A cross-sectional study carried out with 132 three-dimensional digital models in the complete permanent dentition divided into six groups (n=22); three groups with maxillary atresia: G1- skeletal class I, G2- skeletal class II and G3-skeletal class III; three groups without maxillary atresia: G4- skeletal class I; G5- skeletal class II and G6- skeletal class III. The comparison between the skeletal pattern was performed by the non-parametric tests of Kruskal Wallis and Dunn and between the groups by the non-parametric test of Mann Whitney.

The effects of miniscrew-assisted rapid palatal expansion on the upper airway of adults with midpalatal suture in the last two degrees of ossification.

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.

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.

Should midline diastema in mixed dentition be an aesthetic concern?

Background: Mixed dentition determines an important period of occlusion development in childhood.

Objective: This study aimed to evaluate the aesthetic impact of the midline diastema cut-off point in mixed dentition.

Design: A cross-sectional study was performed with 257 children aged 8-10 years in late mixed dentition, with midline diastema of 1-5 mm and normal maxillary overjet.

Correlation between malocclusion and history of bullying in vulnerable adolescents.

Objectives: To assess the correlation between malocclusion and a history of bullying.

Materials And Methods: A cross-sectional study of 494 adolescents aged 12 to 15 years was conducted. The National School Health Survey questionnaire (PeNSE 1 and 2) was used to determine history of bullying by identifying the victim and the abuser.

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.

Orthodontists' preferences regarding the difference of bracket bonding height between the maxillary incisors.

Introduction: The vertical position of orthodontic brackets in maxillary incisors may influence the incisal step between the anterior teeth and thereby interfere with the smile esthetics. Even so, esthetic standards have been modified over time and consistently required technical adjustments.

Objective: This study analyzed orthodontists' preferences regarding the difference of bracket bonding height between the maxillary central incisors (MCI) and maxillary lateral incisors (MLI), and further determined whether the orthodontist sex, age and time of specialization have association to their choices.

Impact of facial profile on young adults' oral health-related quality-of-life item levels: A hierarchical analysis.

Objective: To assess the impact of facial profile on young adults' oral health-related quality of life (OHRQoL) item levels.

Methods: A cross-sectional study was carried out with a population-based sample of 205 young adults, with a mean age of 23.1 years.

The influence of elastomeric ligatures pigmentation on smile aesthetics during orthodontic treatment.

Aim: To assess the influence of elastomeric ligatures, subjected to a previous in vitro pigmentation process using different substances, on smile aesthetics during orthodontic treatment, from the perception of students and professionals.

Methods: Eight elastomeric ligatures of five commercial brands (3M/Unitek, American Orthodontics, Morelli, Ortho Technology, and Orthometric) (n=8) were immersed in coffee, Coca-Cola, and red wine for one minute per day, for 28 days; and another group of ligatures was immersed in artificial saliva. All samples were photographed and subsequently analyzed using the Adobe Photoshop software, by the RGB method.

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.

Influence of the growth pattern on cortical bone thickness and mini-implant stability.

Introduction: Controversial reports suggest a relationship between growth pattern and cortical alveolar bone thickness, and its effect in the use of mini-implants.

Objective: The main purpose of this study was to assess the influence of the growth pattern on the cortical alveolar bone thickness and on the stability and success rate of mini-implants.

Methods: Fifty-six mini-implants were inserted in the buccal region of the maxilla of 30 patients.

Association between 2 indexes for evaluating malocclusion in the mixed dentition.

Introduction: This study aimed to associate 2 indexes for evaluating malocclusion in the mixed dentition.

Methods: A population-based cross-sectional study was conducted involving 743 children aged 8-10 years, divided into early and late mixed dentition. The Dental Aesthetic Index (DAI) and criteria proposed by Grabowski were used to evaluate malocclusion.

Anti-inflammatory and antimicrobial effects of Zingiber officinale mouthwash on patients with fixed orthodontic appliances.

Introduction: This study aimed to assess the anti-inflammatory and antimicrobial effects of mouthwashes with 0.12% chlorhexidine (CLX) and 0.5% Zingiber officinale essential oil (ZOEO).

Light Activation and Thermocycling Methods on the Shear Bond Strength of Brackets Bonded to Porcelain Surfaces.

The present study was evaluated the effect of different light activation and thermocycling methods on the shear bond strength (SBS) and on the adhesive remnant index (ARI) of metal brackets bonded to feldspathic ceramic. Hundred metal brackets were bonded to 20 porcelain cylinders, divided into four groups (n=25) based on light activation and thermocycling processes. The cylinders were etched with 10% hydrofluoric acid for 60 s and coated with two layers of silane.

Evaluation of miniscrew angulation in the posterior maxilla using cone-beam computed tomographic image.

Objective: This study aimed at evaluating whether changes in the insertion angle is a determining factor in the positioning of the miniscrews body in a region with larger interradicular space in the posterior maxilla.

Methods: Analysis of 60 posterior maxillary quadrants were made using images obtained by means of cone-beam computed tomographic image (CBCT), with 0.076-mm voxel, which presented a real miniscrew inserted in the mesial region of the maxillary first molars, serving as reference point for the placement of the virtual miniscrews.

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.

Evaluation of opening pattern and bone neoformation at median palatal suture area in patients submitted to surgically assisted rapid maxillary expansion (SARME) through cone beam computed tomography.

Surgically assisted rapid maxillary expansion (SARME) is the treatment of choice to adult patients even with severe transversal maxillary discrepancies. However, the adequate retention period to achieve the bone remodeling, thus assuring treatment stability, is controversial.Objective To evaluate the opening pattern and bone neoformation process at the midpalatal suture in patients submitted to surgically assisted (SARME) through cone beam computed tomography (CBCT).