Treatment of adult patient with hyperdivergent retrognathic phenotype and anterior open bite: report of a case with non-surgical orthodontic approach
ABSTRACT Adult patients with anterior open bite and hyperdivergent retrognathic phenotype demand complex treatments, as premolar extractions, molar intrusion or orthognathic surgery. In the present clinical case, a young adult patient without significant growth, with Class I and anterior open bite, was treated with four premolar extractions. The therapeutic result shows good intercuspation, good facial esthetic, good function balance, and stability in a two-year post-fixed treatment follow-up.RESUMO Pacientes adultos com mordida aberta anterior e fen ótipo hiperdivergente retrognata demandam tratamentos complexos, com ext...
Source: Dental Press Journal of Orthodontics - September 21, 2020 Category: Dentistry Source Type: research

The ability of orthodontists and maxillofacial surgeons in predicting spontaneous eruption of mandibular third molar using panoramic serial radiographs
Conclusions: Orthodontists and OMFS were not able to predict the eruption of the third molars that have erupted spontaneously. Both indicated extractions around half of the third molars. A follow-up analysis, including one more radiograph, did not improve the accuracy of prognosis among orthodontists and worsened for OMFS.RESUMO Objetivo: Avaliar a habilidade de ortodontistas e cirurgi ões bucomaxilofaciais (CBMF) em propor um prognóstico para terceiros molares inferiores. Métodos: Foram analisados 22 pacientes tratados ortodonticamente sem extração, cujos terceiros molares inferiores irrompidos espontaneamente (n...
Source: Dental Press Journal of Orthodontics - September 21, 2020 Category: Dentistry Source Type: research

Effect of surface treatments on the adhesive properties of metallic brackets on fluorotic enamel
Conclusions: The application of NaOCl or sandblasting associated to phosphoric acid improved the SBS of the brackets in fluorotic enamel without compromising the CD of the resin cement, with improving of enamel interprismatic conditioning.RESUMO Objetivo: Comparar a efetividade do pr é-tratamento com jateamento e desproteinização com NaOCl na resistência de união (SBS), grau de conversão in situ (GC) dos braquetes metálicos ao esmalte fluorótico e o padrão de condicionamento do esmalte. Métodos: Foi utilizado um total de 90 pré-molares superiores livres de cárie. O s dentes foram divididos em seis grupos ex...
Source: Dental Press Journal of Orthodontics - September 21, 2020 Category: Dentistry Source Type: research

Evaluation of zinc-oxide nanocoating on the characteristics and antibacterial behavior of nickel-titanium alloy
Conclusion: ZnO nanocoating may improve the antibacterial effects of NiTi wires and reduce the frictional resistance. Coating may be implanted in orthodontic practice for faster and safer treatment.RESUMO Objetivos: Avaliar o efeito do nanorrevestimento de óxido de zinco (ZnO) sobre as propriedades mecânicas e propriedades antibacterianas de fios ortodônticos de NiTi. Métodos: Fios 0,016 ” x 0,022 ” de NiTi foram revestidos com nanopart ículas de ZnO por meio de um método de deposição eletroquímica com um sistema de três eletrodos a 0,1M Zn(NO3)2. Uma máquina universal de testes foi utilizada para avali...
Source: Dental Press Journal of Orthodontics - September 21, 2020 Category: Dentistry Source Type: research

Von Mises stresses on Mushroom-loop archwires for incisor retraction: a numerical study
ABSTRACT Objective: To perform a numerical simulation using FEM to study the von Mises stresses on Mushroom archwires. Methods: Mushroom archwires made of titanium-molybdenum alloy with 0.017 x 0.025-in cross-section were used in this study. A YS of 1240 MPa and a Young ’ s modulus of 69 GPa were adopted. The archwire was modeled in Autodesk Inventor software and its behavior was simulated using the finite element code Ansys Workbench (Swanson Analysis Systems, Houston, Pennsylvania, USA). A large displacement simulation was used for non-linear analysis. The archwires were deformed in their extremities with 0 ° and 4...
Source: Dental Press Journal of Orthodontics - September 21, 2020 Category: Dentistry Source Type: research

Indication of clear aligners in the early treatment of anterior crossbite: a case series
Conclusions: Due to the perceived shortcomings of alternative approaches, the use of clear aligners for correcting AC in mixed dentition should be considered as a comfortable and well tolerated appliance for young patients.RESUMO Introdu ção: A mordida cruzada anterior (MCA) é definida como uma relação sagital reversa entre os incisivos superiores e inferiores. De acordo com a evidência científica, o tratamento da MCA é indicado em casos em que a interferência oclusal favorece o crescimento mandibular em direção a um pad rão de Classe III. A literatura descreve diversos aparelhos removíveis e fixos para a co...
Source: Dental Press Journal of Orthodontics - September 21, 2020 Category: Dentistry Source Type: research

Cephalometric and occlusal changes of Class III malocclusion treated with or without extractions
Conclusions: Orthodontic treatment of Class III malocclusion patients with fixed appliances improved the sagittal relationships, with greater incisor retrusion in the extraction group. Both the extraction and non-extraction treatments significantly decreased the initial malocclusion severity, with adequate and similar occlusal outcomes of treatment.RESUMO Objetivos: O objetivo desse estudo retrospectivo foi avaliar as altera ções cefalométricas e oclusais de pacientes com má oclusão de Classe III tratados ortodonticamente. Método: Os grupos experimentais compreenderam 37 pacientes Classe III tratados: 19 com extra...
Source: Dental Press Journal of Orthodontics - September 21, 2020 Category: Dentistry Source Type: research

Negligible tooth resorptions after anterior open bite treatment using skeletal anchorage with miniplates
Conclusion: The most important thing to prevent root resorption in orthodontic practice, besides being concerned with the intensity of the applied forces, is to be careful with its distribution along the roots of each tooth, in the dental arch and in the bone that supports the teeth.RESUMO Introdu ção: Quando são utilizadas miniplacas como ancoragem para a mecânica ortodôntica de correção da mordida aberta anterior por meio da retração dos dentes anteriores e intrusão e retração dos dentes posteriores, as reabsorções radiculares apicais externas inflamatórias induzidas ortodont icamente são clinicamente ir...
Source: Dental Press Journal of Orthodontics - September 21, 2020 Category: Dentistry Source Type: research

Why is clinical decision making not always efficient?
(Source: Dental Press Journal of Orthodontics)
Source: Dental Press Journal of Orthodontics - September 21, 2020 Category: Dentistry Source Type: research

Comprehensive approach to simultaneous molar intrusion and canine retraction in the treatment of Class II anterior open bite using miniscrew anchorage
Conclusion: The presented treatment shows the potential to shorten the treatment duration and to contribute to the long-term stability for open bite correction.RESUMO Introdu ção: A mordida aberta anterior é um dos tipos de má oclusão mais difíceis de se corrigir no tratamento ortodôntico. A intrusão de molares usando ancoragem em mini-implantes foi desenvolvida como uma nova estratégia para a correção da mordida aberta. Entretanto, ainda há preocupações qu anto à longa duração desse tratamento em pacientes com discrepâncias anteroposteriores, já que os dentes anteriores são movimentados em etapa disti...
Source: Dental Press Journal of Orthodontics - August 20, 2020 Category: Dentistry Source Type: research

Adult mesenchymal stem cells and their possibilities for Dentistry: what to expect?
ABSTRACT Introduction: Stem cells obtained from the pulp of human deciduous teeth are highly proliferative and plastic multipotent cells, which makes them a relevant model of stem cells, applied in several biomedical areas, with different purposes. Objective: Based on a brief review of the literature, the present work intends to present from conceptual aspects about stem cells, classifications, potential (in vitro and in vivo) applications in dental practice, cell culture, cryopreservation and its importance, ethical and regulatory aspects, as well as the role of the dental surgeon as the endorser responsible for the ent...
Source: Dental Press Journal of Orthodontics - August 20, 2020 Category: Dentistry Source Type: research

Surgically-assisted rapid maxillary expansion (SARME): indications, planning and treatment of severe maxillary deficiency in an adult patient
This study discusses the indications, characteristics and effects of SARME, and presents a clinical case of transverse and sagittal skeletal maxillary discrepancy treated using SARME and orthodontic camouflage.RESUMO Introdu ção: A atresia maxilar, ou deficiência transversa da maxila, pode estar associada à mordida cruzada posterior, além de outras alterações funcionais, especialmente respiratórias. Em pacientes adultos, devido à maturação óssea e fusão da sutura palatina mediana, a expansão rápida da ma xila precisa ser associada a um procedimento cirúrgico prévio, para liberar as áreas de resistência...
Source: Dental Press Journal of Orthodontics - August 20, 2020 Category: Dentistry Source Type: research

Complications encountered during Forsus Fatigue Resistant Device therapy
Conclusions: FFRD is an efficient appliance for treatment of Class II malocclusion; however, different complications were encountered during the appliance therapy. A focus on taking precautions and applying preventive measures can help to avoid such problems, reducing the number of emergency appointments and enhancing the treatment experience with the appliance.RESUMO Introdu ção: Os aparelhos funcionais fixos são uma solução para o tratamento da má oclusão de Classe II em pacientes não colaboradores. Porém, o ortodontista deve estar ciente das complicações inesperadas decorrentes do seu uso. Métodos: Cinque...
Source: Dental Press Journal of Orthodontics - August 20, 2020 Category: Dentistry Source Type: research

Orthodontic treatment of unilateral cleft lip and palate associated with maxillary canine/premolar transposition: case report
ABSTRACT Introduction: The cleft lip and palate is the most frequent craniofacial anomaly and as a consequence of this malformation some inadequate occlusal relationship between the arches are observed. Furthermore, dental absences, individual positioning changes of teeth as rotations, and in more rare situations the transpositions may be found as well. Description: In this context, in this article is reported a case of a 9-year-old patient with unilateral cleft lip and palate, with anterior and posterior crossbite on the left side, absence of the maxillary left lateral incisor, and transposition of the maxillary left c...
Source: Dental Press Journal of Orthodontics - August 20, 2020 Category: Dentistry Source Type: research

Effect of three different attachment designs in the extrusive forces generated by thermoplastic aligners in the maxillary central incisor
Conclusion: The attachment design 3 presents the best distribution of forces for extrusion movement, generating almost null forces on X and Y axes, and lower intensity of force on the Z axis.RESUMO Introdu ção: O uso de alinhadores ortodônticos tem aumentado na Odontologia. Porém, para a realização de movimentos complexos, como a extrusão, é necessário usar attachments para se obter as forças desejadas. Apesar disso, há poucos estudos que tenham avaliado o desempenho biomecânico dos alinh adores e de seus attachments. Objetivo: O objetivo do presente estudo foi avaliar nos três eixos (X, Y e Z) as forças ...
Source: Dental Press Journal of Orthodontics - August 20, 2020 Category: Dentistry Source Type: research