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1.
Cureus ; 16(4): e57845, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38590979

ABSTRACT

Orthodontic treatment during adolescence can contribute to the development of problematic eating disorders. This case study presents the situation of a 12-year-old male patient who experienced a prolonged period of dietary limitation, showed signs of chronic illness, and underwent a significant weight loss because of wearing dental braces. These circumstances triggered the emergence of atypical eating behaviors and complicated the therapeutic process. A case report highlights the effectiveness of conducting psychological evaluations for patients with braces who experience significant weight loss to address possible eating disorders. It also addressed the effectiveness of psychoeducation supportive therapy and nutritional rehabilitation for establishing regular eating patterns during orthodontic treatment. This case also illustrates the significant role of parents in offering emotional support and enhancing professional care. However, conducting extensive longitudinal studies is imperative to fully explore the relationship between orthodontic treatment and eating disorders.

2.
Braz. dent. j ; 31(5): 540-547, Sept.-Oct. 2020. graf
Article in English | LILACS, BBO - Dentistry | ID: biblio-1132326

ABSTRACT

Abstract The aim of this study was to analyze the influence of orthodontic bracket type (metallic or ceramic) and mouthguard on biomechanical response during impact. Two-dimensional plane-strain models of a patient with increased positive overjet of the maxillary central incisor was created based on a CT scan, simulating the periodontal ligament, bone support, gingival tissue, orthodontic brackets (metallic or ceramic) and mouthguard. A nonlinear dynamic impact finite element analysis was performed in which a steel object hit the model at 1 m/s. Stress distributions (Von Mises and Modified Von Mises) and strain were evaluated. Stress distributions were affected by the bracket presence and type. Models with metallic and ceramic bracket had higher stresses over a larger buccal enamel impact area. Models with ceramic brackets generated higher stresses than the metallic brackets. Mouthguards reduced the stress and strain values regardless of bracket type. Mouthguard shock absorption were 88.37% and 89.27% for the metallic and ceramic bracket, respectively. Orthodontic bracket presence and type influenced the stress and strain generated during an impact. Ceramic brackets generated higher stresses than metallic brackets. Mouthguards substantially reduced impact stress and strain peaks, regardless of bracket type.


Resumo O objetivo deste estudo foi analisar a influência da presença e tipo de bráquete ortodôntico (metálico ou cerâmico), e a presença de protetor bucal na resposta biomecânica durante impacto. Modelos bidimensionais em estado plano de deformação de paciente com incisivo central superior com overjet positivo acentuado foram criados baseados em tomografia computadorizada, simulando ligamento periodontal, suporte ósseo, tecido gengival, bráquetes ortodônticos (metálico e cerâmico) e o protetor bucal. Análise de elementos finitos não-linear de impacto foi realizada na qual uma esfera de aço atingiu o modelo a 1m/s. A distribuição de tensões (Von Mises e Von Mises modificado) e a deformação foram avaliadas. As distribuições de tensões foram afetadas pela presença e tipo de bráquete. Modelos com bráquete metálico e cerâmico produziram maiores valores de tensões sobre maior área do esmalte vestibular. Modelos com bráquetes cerâmicos geraram maiores tensões do que metálicos. O protetor bucal reduziu as tensões e deformações geradas independentemente do tipo de bráquete. A capacidade de absorção de choques foi de 88.37 e 89.27% para os bráquetes metálicos e cerâmicos, respectivamente. A presença e o tipo de bráquete influenciou a distribuição de tensões e deformações durante o impacto. Bráquetes cerâmicos geraram maiores valores de tensão do que metálicos. Protetor bucal reduziu significativamente os picos de tensão e deformação.


Subject(s)
Humans , Orthodontic Brackets , Mouth Protectors , Stress, Mechanical , Materials Testing , Ceramics , Orthodontic Appliance Design , Finite Element Analysis , Dental Stress Analysis , Incisor
3.
Ortho Sci., Orthod. sci. pract ; 13(50): 76-83, 2020. ilus, tab
Article in Portuguese | BBO - Dentistry | ID: biblio-1118932

ABSTRACT

Resumo O caso apresentado demonstra uma opção de posicionamento de bráquete que facilita e auxilia na obtenção de torque adequado, salientando a importância da escolha do bráquete para auxiliar na mecânica ortodôntica. A paciente reportada foi diagnosticada como face curta e apresentava espaços nos arcos superior e inferior para serem fechados e uma pronunciada inclinação lingual dos incisivos inferiores, que não seria beneficiada pela mecânica necessária para o fechamento dos espaços. Com uma combinação de bráquetes com torque negativo dos incisivos inferiores posicionados invertidos e mecânica de retração com fios de alto calibre e rígidos, os espaços foram fechados com melhora do torque dos incisivos, mesmo em situação adversa e uma boa oclusão e estética do sorriso foram possíveis de obter. Conclui-se que a individualização no posicionamento do bráquete ajuda sobremaneira na obtenção de um resultado satisfatório, compensando dificuldades de controle de torque pela combinação fio/bráquete (AU)


Abstract This case report demonstrates an option to get the proper torque, by changing the bracket placement and highlight the importance of bracket choice for mechanics. The case reported is a short face patient with spaces to close and had a pronounced lingual inclination of the lower incisors that was not benefited by the necessary mechanics. Through the combined use of brackets with -6 degrees of torque, placed upside down and sliding mechanics with a rigid wire, the spaces were closed improving torque instead of worsening it, and a proper occlusion with a pleasant smile could be achieved. Some individualization on bracket placement can help mechanics to get the desired tooth position, overcoming an inadequate torque control by the bracket/archwire combination (AU)


Subject(s)
Humans , Female , Adult , Orthodontic Brackets , Torque , Prescriptions
4.
Braz. dent. j ; 29(2): 128-132, Mar.-Apr. 2018. tab, graf
Article in English | LILACS | ID: biblio-951540

ABSTRACT

Abstract Patients undergoing radiotherapy treatment present more susceptibility to dental caries and the use of an orthodontic device increases this risk factor due to biofilm accumulation around the brackets. The objective of this study was to evaluate the shear bond strength to irradiated permanent teeth of orthodontic brackets bonded with conventional glass ionomer cement and resin-modified glass ionomer cement due to the fluoride release capacity of these materials. Ninety prepared human premolars were divided into 6 groups (n=15), according to the bonding material and use or not of radiation: CR: Transbond XT composite resin; RMGIC: Fuji Ortho LC conventional glass ionomer cement; GIC: Ketac Cem Easymix resin-modified glass ionomer cement. The groups were irradiated (I) or non-irradiated (NI) prior to bracket bonding. The specimens were subjected to a fractioned radiation dose of 2 Gy over 5 consecutive days for 6 weeks. After the radiotherapy, the brackets were bonded on the specimens with Transbond XT, Fuji Ortho LC and Ketac Cem Easymix. After 24 h, the specimens were subjected to shear bond strength test. The image of enamel surface (classified by Adhesive Remnant Index - ARI) was also evaluated and its frequency was checked among groups/subgroups. The shear bond strength variable was evaluated with ANOVA and Tukey's post-hoc test. GIC group showed the lowest adhesion values among the groups (p<0.05). There was no statistically significant difference among non-irradiated and irradiated groups (p>0.05). As for the ARI, the CR-I group showed the highest material retention on enamel surface among the irradiated groups. RMGIC group showed the highest values for shear bond strength and presented ARI acceptable for clinical practices.


Resumo Pacientes submetidos a tratamento radioterápico apresentam maior suscetibilidade à cárie dentária e o uso de aparelho aumenta esse fator de risco devido ao acúmulo de biofilme dental ao redor dos bráquetes. Assim, o objetivo deste estudo foi avaliar a resistência ao cisalhamento de bráquetes ortodônticos colados com cimento de ionômero de vidro convencional (CIV) e o modificado por resina (CIVMR), devido à capacidade de liberação de flúor desse material em dentes permanentes irradiados. Noventa pré-molares humanos foram divididos em 6 grupos (n=15), de acordo com o materila de colagem e com o uso ou não de radiação: RC: Transbond XT; CIVMR: Fuji Ortho LC; RMGIC: Ketac Cem Easymix. Os grupos for irradiados (I) ou não-irradiados (NI) previamente à colagem dos bráquetes. Os espécimes foram submetidos a doses fracionadas de radiação de 2 Gy/dia, durante 5 dias consecutivos, por 6 semanas. Depois da termociclagem e radioterapia, os bráquetes foram colados sobre os espécimes com Transbond XT, Fuji Ortho LC e Ketac Cem Easymix. Depois de 24 h, os espécimes foram sumetidos ao teste de resistência ao cisalhamento. A imagem da superfície do esmalte (classificado pelo Índice de Remanescente Adesivo-IRA) também foi avaliada. O IRA foi distribuido em tabelas de contingência e analisado quanto à frequência entre grupos/subgrupos. O teste de resistência ao cisalhamento foi avaliado por ANOVA e pós-teste de Tukey. CIVMR apresentou os menores valores de adesão entre os grupos (p<0,05). Entre os grupos irradiados e não-irradiados não houve diferença estatística significante (p>0,05). Quanto ao IRA, RC-I apresentou maior retenção de compósito na superfície do esmalte do que os demais subgrupos. CIVMR pode ser utilizado para colagem de bráquetes metálico e apresentou IRA aceitável para práticas clínicas.


Subject(s)
Humans , Bicuspid/radiation effects , Dental Bonding , Orthodontic Brackets , Glass Ionomer Cements , Neoplasms/radiotherapy , Radiation, Ionizing , Acid Etching, Dental , In Vitro Techniques , Composite Resins/chemistry , Dental Enamel , Shear Strength
5.
Clin Oral Investig ; 21(4): 1037-1046, 2017 May.
Article in English | MEDLINE | ID: mdl-27270902

ABSTRACT

OBJECTIVES: The aims were to evaluate the levels of bacterial species in saliva and in situ and to assess whether the design of brackets influences the risk of developing periodontal disease. MATERIALS AND METHODS: Twenty patients (13.3 mean age) were bonded with self-ligating brackets and a conventional bracket. Saliva was collected before bonding and 30 and 60 days after bonding. One sample of each bracket was removed 30 and 60 days after bonding. The analysis was determined by checkerboard DNA-DNA hybridization. The data was evaluated by the non-parametric test. RESULTS: A significant increase in the levels of bacterial species in the saliva occurred in 15 of the 22 analyzed species. The self-ligating brackets presented the highest incidence percentages for the orange and red complexes 60 days after bonding. In situ analyses showed different patterns according to the bracket design. The levels of Campylobacter rectus showed significant differences (p = 0.011) 60 days after bonding among the three brackets; the highest values were observed in the In-Ovation®R bracket. CONCLUSIONS: The bracket design seems to influence the levels of bacterial species involved in periodontal disease. Considering the wide variety of bacterial species, additional studies are needed to aid in the establishment of effective protocols to prevent the development of periodontal disease during orthodontic treatment. CLINICAL RELEVANCE: A dynamic alteration in the oral microbiota may lead to inflammatory reactions in the supporting soft and hard tissues. The different types of brackets interfere with bacterial adherence. Bracket design should be considered in orthodontic treatment.


Subject(s)
Orthodontic Brackets/microbiology , Saliva/microbiology , Adolescent , Brazil , DNA Probes , Dental Bonding , Female , Humans , Male , Orthodontic Appliance Design
6.
Ortodontia ; 49(6): 592-596, nov.-dez 2016. ilus, tab
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-875449

ABSTRACT

The first Edgewise brackets were utilized with gold wire and the slot designed with 0.022" high to present sufficient rigidity. When gold was replaced by stainless steel, cheaper and stiffer, it was proposed to reduce the slot size to 0.018". The two different sizes of brackets are used in contemporary orthodontics and many clinical orthodontists are unaware of the advantages they may have. The aim of this paper is to present, based on the orthodontic literature, the main characteristics influenced by the brackets slot size and compile data to drive orthodontists in choosing the bracket that best meets their clinical needs.


Os primeiros braquetes Edgewise eram utilizados com fios de ouro e concebidos com o slot de 0,022" de altura, para que apresentassem rigidez suficiente. Com a substituição do ouro pelo aço inoxidável, mais barato e mais rígido, foi proposta a redução do slot para 0,018". As duas diferentes dimensões de braquetes são utilizadas na Ortodontia contemporânea e muitos ortodontistas clínicos desconhecem suas vantagens. O objetivo deste artigo foi apresentar, baseando-se na literatura ortodôntica, as principais características influenciadas pelo tamanho do slot dos braquetes e compilar os dados para direcionar o ortodontista na escolha do braquete que melhor atenda às suas necessidades clínicas.


Subject(s)
Orthodontic Brackets , Orthodontics/instrumentation , Torque
7.
Ortho Sci., Orthod. sci. pract ; 7(28): 464-468, 2014. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-743128

ABSTRACT

Atualmente os bráquetes autoligados estão se tornando cada vez mais comuns nos tratamentos ortodônticos devido às inúmeras vantagens proporcionadas por estes. Hoje a movimentação dentária é realizada com bráquetes passivos ou com interativos, sendo que cada sistema apresenta suas vantagens individuais em determinadas etapas do tratamento. A proposta deste trabalho foi apresentar um novo bráquete ortodôntico autoligado, o qual visa proporcionar inúmeras movimentações dentárias de forma simples e eficiente aproveitando a técnica que o ortodontista domina, pois esta filosofia de tratamento agrega inúmeros conceitos em uma única peça.


Self-ligating brackets are becoming more common in orthodontic treatments due to numerous advantages offered by them. Currently tooth movement can be performed with passive or interactive brackets, and each system has its advantages in certain stages of treatment. The purpose of this study was to introduce a new self-ligating orthodontic bracket that aims to provide several dental movements in a simple and efficient way, leveraging the knowledge of the professional on its technique, since this philosophy of treatment combines many concepts in one piece.


Subject(s)
Orthodontic Brackets , Orthodontics
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