History of Orthodontics in Brazil - Postgraduate Education.

Orthodontics in Brazil underwent significant transformations in the 1950s when several dentists returned to the country after completing advanced education courses in the specialty abroad. The first two orthodontic associations, in Rio de Janeiro and São Paulo, were constituted in 1955 and 1959. The specialty's first event with characteristics of a professional meeting occurred in São Paulo in 1957, and Postgraduate Orthodontic education became available.

Impact of bone-anchored maxillary protraction on the quality of life of subjects with complete unilateral cleft lip and palate.

Introduction: This study aimed to evaluate the influence of bone-anchored maxillary protraction (BAMP) on the oral health-related quality of life (OHRQOL) in subjects with complete unilateral cleft lip and palate (UCLP) and moderate-to-severe maxillary deficiency.

Methods: A longitudinal observational study was conducted with a sample of 20 patients (13 males, 7 females) aged 10-14 years (mean age, 11.8 years) with Goslon 3, 4, and 5.

History of Orthodontics in Brazil - First Brazilian Specialist.

At the beginning of the 20 century science was beginning to transform the world, including Brazil. All aspects of dentistry were considered essential to the welfare of the people and that may also have included orthodontics. It is possible then to assume that the manufacturing of some orthodontic appliances was already being taught in the educational courses.

Influence of clinical and demographic factors on the oral health-related quality of life of patients with cleft lip and palate undergoing orthodontic treatment: a systematic review and meta-analysis.

Objective: The purpose of this study was to evaluate the influence of orthodontic treatment on the oral health-related quality of life (OHRQoL) of patients with cleft lip and palate.

Search Methods: Electronic searches were conducted in Pubmed, Scopus, Web of Science, Cochrane Library, VHL, and OpenGrey databases, completed in January 2021.

Selection Criteria: Cross-sectional and longitudinal observational studies that presented an assessment of OHRQoL in cleft patients undergoing orthodontic treatment were included, according to PRISMA guidelines.

Effects of the cervical headgear in growing Angle Class II malocclusion patients: a prospective study.

Objective: Evaluate dental and skeletal changes resulting from the exclusive use of the cervical headgear for 15 ± 4 months in the treatment of patients with Class II division 1 malocclusion.

Methods: Differences between the beginning (T1) and immediately after the end of the therapy (T2) with the cervical headgear in growing patients (Experimental Group, EG, n = 23) were examined and compared, during compatible periods, with those presented by a group of untreated individuals (Control Group, CG, n =22) with similar malocclusions and chronological age. The cephalometric variables evaluated were: ANB, GoGn.

Facial growth direction after surgical intervention to relieve mouth breathing: a systematic review and meta-analysis.

Objectives: A systematic review was performed to assess the prognosis for facial growth direction documented by mandibular plane inclination and anterior face height in growing subjects who had undergone surgical intervention to relieve mouth breathing (PROSPERO database, registration no. CRD 42013005707).

Methods: PubMed, Scopus, Web of Science, the Cochrane Library and LILACS were searched based on the guidelines of the PRISMA statement.

Agreement in the determination of preformed wire shape templates on plaster models and customized digital arch form diagrams on digital models.

Introduction: The aim of this study was to verify the accuracy of preformed wire shape templates on plaster models and those of customized digital arch form diagrams on digital models.

Methods: Twenty pairs of dental plaster models were randomly selected from the archives of the Department of Orthodontics of Federal Fluminense University, Niterói, Rio de Janeiro, Brazil. All plaster model samples were scanned in a plaster model scanner to create the respective digital models.

Clinical recognition of mouth breathers by orthodontists: A preliminary study.

Introduction: A routine diagnosis of a patient's breathing status performed by an orthodontist normally includes visual assessment, medical history, clinical examination of habitual lip posture, size and shape of the nostrils, reflex control of the alar muscle and respiratory tests, and the dental mirror test. The objective of this study was to test the recognition of mouth breathers in young persons by an orthodontist and agreement with an otolaryngologist's reference diagnosis when routine assessments were carried out.

Methods: Three independent and blind evaluations were conducted on the same day by 2 orthodontists independently (anamnesis and breathing tests, respectively) and an otolaryngologist (rhinoscopy, nasal endoscopy, and visual assessment).

Accuracy of printed dental models made with 2 prototype technologies and different designs of model bases.

Introduction: The aim of this study was to compare the accuracy of printed models from intraoral scans with different designs of model bases, using 2 types of 3-dimensional printing techniques.

Methods: Three types of model base design were created: regular base, horseshoe-shaped base, and horseshoe-shaped base with a bar connecting the posterior region. The digital models were printed with the 3-dimensional printers using different techniques: stereolithography and triple jetting technology (polyjet).

Are there differences between comparison methods used to evaluate the accuracy and reliability of digital models?

Objectives: The accuracy and reliability of plaster models and digital models acquired with two different surface laser scanners were tested by means of three methods: measurement with calipers, digital measurement with proper software and superimposition of the digital models.

Methods: Thirty plaster models with permanent dentition that met the inclusion criteria were selected and scanned with two laser scanners (R700 and Xcad). Three examiners measured distances on plaster models with a digital caliper and on digital models using Ortho Analyzer software.

Accuracy and reproducibility of measurements on plaster models and digital models created using an intraoral scanner.

Aim: The purpose of the present study was to evaluate the accuracy and reproducibility of measurements made on digital models created using an intraoral color scanner compared to measurements on dental plaster models.

Methods: This study included impressions of 28 volunteers. Alginate impressions were used to make plaster models, and each volunteers' dentition was scanned with a TRIOS Color intraoral scanner.

Digital orthodontic radiographic set versus cone-beam computed tomography: an evaluation of the effective dose.

Objective: The aim of this study was to compare the equivalent and effective doses of different digital radiographic methods (panoramic, lateral cephalometric and periapical) with cone-beam computed tomography (CBCT).

Methods: Precalibrated thermoluminescent dosimeters were placed at 24 locations in an anthropomorphic phantom (Alderson Rando Phantom, Alderson Research Laboratories, New York, NY, USA), representing a medium sized adult. The following devices were tested: Heliodent Plus (Sirona Dental Systems, Bernsheim, Germany), Orthophos XG 5 (Sirona Dental Systems, Bernsheim, Germany) and i-CAT (Imaging Sciences International, Hatfield, PA, USA).

Effect of polyvinylsiloxane material and impression handling on the accuracy of digital models.

Introduction: The objective of this study was to evaluate the accuracy and reliability of measurements on digital models obtained by scanning impressions 5, 10, and 15 days after they were made from 2 soft putty polyvinylsiloxane (PVS) materials.

Methods: Thirty volunteers were selected for making impressions of their dentitions with alginate to create a plaster model and with PVS impression material to create a digital model by laser scanning. Three examiners made the plaster model measurements with digital calipers and repeated these measurements on the digital models made from the scanned PVS impressions.

Severe root resorption resulting from orthodontic treatment: prevalence and risk factors.

Objective: To assess the prevalence of severe external root resorption and its potential risk factors resulting from orthodontic treatment.

Methods: A randomly selected sample was used. It comprised conventional periapical radiographs taken in the same radiology center for maxillary and mandibular incisors before and after active orthodontic treatment of 129 patients, males and females, treated by means of the Standard Edgewise technique.

Frictional resistance of self-ligating versus conventional brackets in different bracket-archwire-angle combinations.

Objective: To compare the influence of archwire material (NiTi, beta-Ti and stainless steel) and brackets design (self-ligating and conventional) on the frictional force resistance.

Material And Methods: Two types of brackets (self-ligating brackets - Smartclip, 3M/Unitek - and conventional brackets - Gemini, 3M/Unitek) with three (0, 5, and 10 degrees) slot angulation attached with elastomeric ligatures (TP Orthodontics) were tested. All brackets were tested with archwire 0.

Evaluation of cephalometric landmark identification on CBCT multiplanar and 3D reconstructions.

Objective: To evaluate the reliability of three-dimensional (3D) landmark identification in cone-beam computed tomography (CBCT) using two different visualization techniques.

Materials And Methods: Twelve CBCT images were randomly selected. Three observers independently repeated three times the identification of 30 landmarks using 3D reconstructions and 28 landmarks using multiplanar views.