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1.
Rev. estomat. salud ; 31(1): 1-6, 20230123.
Article in Portuguese | LILACS-Express | LILACS | ID: biblio-1435261

ABSTRACT

Focal fibrous hyperplasia (FFH) is a pathology characterized by tissue enlargement as a result of increasing the number of inflammatory cells which receive chronic mechanical stimuli of low intensity that may affect gums, lip, palate, jugal mucosa and tongue.The aim of this article is to report a case of FFH on the lateral border on both sides of the tongue associated with the use of the Hyrax appliance in a hebiatric patient, whose chief complaint was chewing discomfort. This case was diagnosed clinically and by histopathology analysis and treated by surgical excision as well as the removal of Hyrax appliances. Follow-up care provided the recovery of the patient's quality of life.


La hiperplasia fibrosa focal (HFF) es una patología caracterizada por el aumento de tamaño de los tejidos como consecuencia del aumento del número de células inflamatorias que reciben estímulos mecánicos crónicos de baja intensidad que pueden afectar a encías, labio, paladar, mucosa yugal y lengua. El objetivo de este artículo es reportar un caso de FFH en el borde lateral a ambos lados de la lengua asociado al uso del aparato Hyrax en un paciente hebiátrico, cuyo principal motivo de consulta era la molestia masticatoria. Este caso fue diagnosticado clínicamente y por análisis histopatológico y tratado mediante escisión quirúrgica así como la retirada de los aparatos de Hyrax. La atención de seguimiento permitió la recuperación de la calidad de vida del paciente

2.
Rev. medica electron ; 40(1): 192-199, ene.-feb. 2018. ilus
Article in Spanish | LILACS, CUMED | ID: biblio-902280

ABSTRACT

RESUMEN La disyunción maxilar rápida es un procedimiento ortopédico en el que se realizan una serie de activaciones diarias a un tornillo de expansión que actúa sobre la sutura palatina media y provoca la apertura de la misma en un breve período de tiempo, puede acompañarse de excesiva sintomatología en los pacientes. El objetivo de este trabajo es mostrar los beneficios aportados por la disyunción palatina del maxilar al aplicar solamente una activación diaria (1/4 de vuelta). Para ello se empleó un tornillo tipo Hyrax en un paciente masculino de 14 años de edad que presentaba una maloclusión dental de Clase III de Angle (Sindrómica Clase I), acompañada de un micrognatismo transversal superior mayor de 4 mm, una mordida cruzada posterior bilateral y presencia de curva de Monzón, que indica endognasia del maxilar. En un período de tiempo de siete semanas se logró la apertura de la sutura palatina media y por consiguiente, el incremento de la longitud del arco dentario, la eliminación del apiñamiento además de la corrección de la mordida cruzada anterior y posterior bilateral, con escasa sintomatología referida por el paciente (AU).


ABSTRACT The rapid maxillary disjunction is an orthopedic procedure in which an expansion screw acting upon the medial palatal suture, is activated every day and causes its aperture in a short period of time, accompanied by an excessive symptomatology in the patients. The aim of this paper is showing the benefits provided by the maxillary palatal disjunction when activated only once a day (1/4 turn). A Hyrax type screw was used in a 14 years-old male patient who had an Angle´s Class III malocclusion (Syndromic Class I) together with a transversal superior micrognathism larger than 4 mm and a posterior bilateral cross bite with a Monzon´s curve indicating maxillary endognathia. The results showed the expansion of the medial palatal suture in seven weeks and as a consequence the expansion of the dental arch, the alleviation of dental crowding, and the correction of the anterior and posterior bilateral cross bite and what is most important, the distress caused to the patient was minimal AU).


Subject(s)
Humans , Male , Adolescent , Orthodontics, Corrective , Palatal Expansion Technique , Extraoral Traction Appliances , Orthodontics , Surgical Procedures, Operative , Cephalometry , Models, Dental , Orthodontic Anchorage Procedures , Malocclusion, Angle Class III
3.
Dental press j. orthod. (Impr.) ; 23(1): 37-45, Jan.-Feb. 2018. tab, graf
Article in English | LILACS | ID: biblio-891117

ABSTRACT

ABSTRACT Introduction: The force applied to the teeth by fixed orthopaedic expanders has previously been studied, but not the force applied to the orthodontic mini-implant (OMI) used to expand the maxilla with Hyrax hybrid expanders (HHE). Objective: The aim of this article was to evaluate the clinical safety of the components (OMI, abutment and double wire arms) of three different force-transmitting systems (FTS) for conducting orthopaedic maxillary expansion: Jeil Medical & Tiger Dental™, Microdent™ and Ortholox™. Methods: For the realization of this in vitro study of the resistance to mechanical load, three different abutment types (bonded, screwed on, and coupling) and three different OMIs' diameters (Jeil™ 2.5 mm, Microdent™ 1.6 mm and Ortholox™ 2.2 mm) were used. Ten tests for each of these three FTS were carried out in a static lateral load in artificial bone blocks (Sawbones™) by a Galdabini universal testing machine, then comparing its performance. Comparisons of loads, deformations and fractures were carried out by means of radiographs of FTS components in each case. Results: At 1- mm load and within the elastic deformation, FTS values ranged from 67 ± 13 N to 183 ± 48 N. Under great deformations, Jeil & Tiger™ was the one who withstood the greatest loads, with an average 378 ± 22 N; followed by Microdent™, with 201 ± 18 N, and Ortholox™, with 103 ± 10 N. At 3 mm load, the OMIs shaft bends and deforms when the diameter is smaller than 2.5 mm. The abutment fixation is crucial to transmit forces and moments. Conclusions: The present study shows the importance of a rigid design of the different components of HHEs, and also that HHEs would be suitable for maxillary expansion in adolescents and young adults, since its mean expansion forces exceed 120N. Furthermore, early abutment detachment or smaller mini-implants diameter would only be appropriate for children.


RESUMO Introdução: a força aplicada sobre os dentes por expansores ortopédicos fixos já foi estudada antes, mas não a força aplicada sobre os mini-implantes ortodônticos (MIOs) usados para expandir a maxila com expansores do tipo Hyrax híbrido (EHH). Objetivo: o objetivo desse artigo foi avaliar a segurança clínica dos componentes (MIO, abutment de fixação, e braços de fio duplo) de três sistemas de transmissão de força (STF) usados para expansão ortopédica da maxila: Jeil Medical & Tiger Dental™, Microdent ™ e Ortholox ™. Métodos: para realizar esse estudo in vitro sobre a resistência à carga mecânica, foram usadas três tipos de sistema de fixação (colado, aparafusado e coupling) e MIOs de três diâmetros diferentes (Jeil™ 2,5 mm; Microdent™ 1,6 mm e Ortholox™ 2,2 mm), com suas respectivas mecânicas de STF. Foram realizados 10 testes para cada STF, usando uma carga lateral estática em blocos de osso artificial (Sawbones™), com uma máquina universal de testes e, depois, comparou-se, por meio de radiografias, os desempenhos, levando-se em consideração as cargas, deformações e fraturas dos componentes de cada STF. Resultados: com a carga a 1 mm e sem exceder o limite de deformação elástica, os valores dos STFs variaram de 67 ± 13 N a 183 ± 48 N. Sob deformações maiores, o sistema Jeil & Tiger™ foi o que apresentou maior resistência às cargas elevadas, com valor de 378 ± 22 N; seguido pelo Microdent™, com 201 ± 18 N, e Ortholox™, com 103 ± 10 N. Com a carga a 3 mm, o eixo do MIO se dobrou e deformou quando seu diâmetro era menor que 2,5 mm. O abutment de fixação é crucial para a transmissão das forças e momentos. Conclusões: o presente estudo evidenciou a importância da rigidez no design dos diferentes componentes dos STFs dos EHH. Também revelou que eles são adequados para a expansão da maxila em adolescentes e adultos jovens, pois as forças de expansão, em média, excederam os 120N. Além disso, a desconexão precoce do abutment ou o uso de mini-implantes de menor diâmetro no design do STF seriam apropriados apenas em crianças.


Subject(s)
Humans , Adolescent , Palatal Expansion Technique/instrumentation , Orthodontic Appliance Design , Orthodontic Appliances, Fixed , In Vitro Techniques , Materials Testing
4.
INSPILIP ; 1(1): 1-18, ene.-jun 2017.
Article in Spanish | LILACS | ID: biblio-987896

ABSTRACT

La fisura labio palatina es una malformación congénita que afecta al paciente y a su familia de muchas maneras, por lo que se requiere la intervención multidisciplinaria de diversas áreas de la salud. Esta condición causa problemas estéticos, fonéticos, auditivos, maloclusiones, anomalías y ausencias dentarias, colapso trasversal del maxilar y compromisos afectivos. Las deficiencias transversales son comunes en este tipo de pacientes (1). La expansión maxilar es necesaria en el tratamiento de estos pacientes (2) (3). La combinación ortodóntica-quirúrgica nos ayuda para expandir el maxilar en adultos. El proceso consiste en el corte de la sutura palatina media, seguida de la aplicación de un tornillo hyrax para conseguir la expansión (4).


The cleft lip is a congenital malformation that affects the patient and his family in many ways, so that multidisciplinary intervention in various areas of health is required. This malformation causes besides physical problems and cosmetics, phonics, hearing problems, malocclusions, anomalies and missing teeth, maxillary transverse collapse, emotional and psychological problems. Maxillary expansion often necessary to treat these patients. Orthodontic-surgical combination helps us to expand the maxilla in adults. The process involves cutting the mid palatal suture followed by application of a Hyrax screw to achieve expansion. The separation of the suture is confirmed with an oclusal radiograph and the presence of a diastema between the maxillary central incisors.


Subject(s)
Humans , Female , Young Adult , Palatal Obturators , Congenital Abnormalities , Tooth Abnormalities , Dental Fissures , Anodontia , Maxilla
5.
Dental press j. orthod. (Impr.) ; 21(3): 85-93, tab, graf
Article in English | LILACS | ID: lil-787906

ABSTRACT

ABSTRACT Objective: The aim of this study was to introduce a new method for bilateral distal movement of the entire maxillary posterior segment. Case report: A 17-year-old girl with Class I skeletal malocclusion (end-to-end molar relationships, deviated midline and space deficiency for left maxillary canine) was referred for orthodontic treatment. She did not accept maxillary first premolars extraction. A modified Hyrax appliance (Dentaurum Ispringen, Germany) was used for bilateral distalization of maxillary posterior teeth simultaneously. Expansion vector was set anteroposteriorly. Posterior legs of Hyrax were welded to first maxillary molar bands. All posterior teeth on each side consolidated with a segment of 0.017 × 0.025-in stainless steel wire from the buccal side. Anterior legs of Hyrax were bent into eyelet form and attached to the anterior palate with two mini-screws (2 × 10 mm) (Jeil Medical Corporation Seoul, South Korea). Hyrax opening rate was 0.8 mm per month. Lateral cephalometric radiographs were used to evaluate the extent of distal movement. 3.5-mm distalization of posterior maxillary teeth was achieved in five months. Results: A nearly bodily distal movement without anchorage loss was obtained. Conclusion: The mini-screw-supported modified Hyrax appliance was found to be helpful for achieving en-masse distal movement of maxillary posterior teeth.


RESUMO Objetivo: o objetivo do presente estudo foi apresentar um novo método para a distalização bilateral de todo o segmento posterior superior. Relato do caso: uma jovem de 17 anos de idade, com má oclusão esquelética de Classe I (relação de molares em topo a topo, linha média desviada e deficiência de espaço para o canino superior esquerdo) foi encaminhada para tratamento ortodôntico, mas recusou-se a autorizar a extração dos primeiros pré-molares superiores. Um aparelho Hyrax modificado (Dentaurum, Ispringen, Alemanha) foi utilizado para a distalização bilateral simultânea dos dentes posteriores superiores. O vetor de expansão foi definido no sentido anteroposterior. As barras de conexão posteriores do Hyrax foram soldadas às bandas dos primeiros molares superiores. Em cada um dos lados, todos os dentes posteriores foram agrupados com um segmento de fio de aço inoxidável de calibre 0,017" x 0,025" passando por vestibular. As barras de conexão anteriores do Hyrax foram dobradas em forma de loop e conectadas à região anterior do palato por meio de dois mini-implantes (2 x 10mm) (Jeil Medical Corporation, Seoul, Coreia do Sul). A taxa de abertura do Hyrax foi de 0,8mm / mês. Telerradiografias laterias foram usadas para avaliar a extensão dos movimentos de distalização. Resultados: em um prazo de cinco meses, foi obtida uma distalização de 3,5mm dos dentes posteriores superiores. O movimento realizado foi praticamente de corpo (translação), sem qualquer perda de ancoragem. Conclusão: o aparelho Hyrax modificado suportado por mini-implantes mostrou-se útil para efetuar o movimento de distalização em massa dos dentes posteriores superiores.


Subject(s)
Humans , Female , Adolescent , Tooth Movement Techniques/instrumentation , Orthodontic Anchorage Procedures , Malocclusion, Angle Class I/therapy , Radiography, Dental , Cephalometry , Orthodontic Appliance Design , Malocclusion, Angle Class I/diagnostic imaging
6.
Journal of Practical Stomatology ; (6): 207-211, 2016.
Article in Chinese | WPRIM | ID: wpr-486038

ABSTRACT

Objective:To study the dental and skeletal changes after orthodontic treatment for malocclusion patients with rapid maxil-lary and mandibular expansion companied with fixed appliance.Methods:36 patients underwent the treatment with rapid maxillary and mandibular expansion companied with straight wire appliance.Pre-and post-treatment dental casts and lateral cephalometric radiographs were measured and compared.Results:After treatment,the maxillary and mandibular arch width perimeters increased(P 0.05).U1-SN and U1-NA decreased,L1-MP and L1-NB increased(P <0.05).Conclusion:Dental crowding can be solved effectively and occlusion re-lationship can be kept well with rapid maxillary and mandibular expansion companied with straight wire appliance without influence on the vertical skeletal relationship.

7.
Article in English | IMSEAR | ID: sea-140126

ABSTRACT

Aim and Objectives: Rapid Maxillary Expansion constitutes a routine clinical procedure in orthodontics, involving separation of mid-palatine suture which is usually done with help of the Hyrax screw. However, because of its high cost, the use has been limited, especially in institutions. So, the purpose of this study was to construct an economical device which can expand the maxillary arch in growing patients. Materials and Methods: Six patients having constricted maxilla and posterior skeletal crossbite were randomly selected from the Department of Orthodontics. A unique, easy and simple alternative device for expanding the maxillary arch called economic Rapid Maxillary Expander (eRME) has been fabricated at about one-tenth the cost of the conventional Hyrax. Pre- and post-treatment effects were statistically tested by using paired t-test at 0.05 level of significance. Results and Conclusion: The study results showed an average expansion in canine, premolar and molar regions of 4.4 mm, 6.8 mm and 9.4 mm, respectively, having significant difference pre-and post-treatment. Thus, it shows that maxillary expansion is efficiently possible with the application of this newly constructed device named eRME. This appliance also acts as a fixed retainer to avoid relapse, hence negating the need for a separate retainer.


Subject(s)
Acrylic Resins/economics , Bicuspid , Cephalometry , Child , Costs and Cost Analysis , Cuspid , Dental Arch/pathology , Dental Materials/economics , Dental Soldering , Female , Follow-Up Studies , Humans , Male , Malocclusion/pathology , Malocclusion/therapy , Maxilla/pathology , Molar , Orthodontic Appliance Design/economics , Orthodontic Appliances/economics , Orthodontic Brackets/economics , Orthodontic Retainers/economics , Orthodontic Wires/economics , Palatal Expansion Technique/economics , Palatal Expansion Technique/instrumentation
8.
Arq. ciências saúde UNIPAR ; 10(3): 177-180, set.-dez. 2006. ilus
Article in Portuguese | LILACS | ID: lil-498955

ABSTRACT

A atresia maxilar é um problema encontrado com muita freqüência na população, devido a fatores negativos relacionados às alterações da oclusão. Dentre as opções para a correção desta atresia, temos a expansão rápida da maxila, que consiste na sua correção óssea transversa. Para obter uma boa expansão do maxilar, é necessário que haja a disjunção da sutura palatina através de aparelhos ortopédicos, que realizam este trabalho. É bom lembrar que a expansão dos arcos dentários pode ser produzida por uma variedade de tratamentos ortodônticos e ortopédicos. A expansão rápida da maxila é uma técnica importante para que o ortodontista possa intervir em eventuais problemas de atresia de maxila. O presente trabalho tem como objetivo relatar uma expansão rápida de maxila em criança, utilizando um aparelho fixo denominado Hyrax. Concluiu-se que o aparelho foi eficiente na promoção da disjunção maxilar.


The maxillary constriction is a problem often found due to negative aspects related to constriction alterations. Among the choices for the correction of such constriction, there is the rapid maxillary expansion consisting of correcting the transversal bone. In order to obtain a good maxillary expansion, there should be a disjunction of the suture palatiny through orthopedics appliances which do that. It is good to remember that the dental arch expansion may be the result of a number of orthodontic and orthopedic treatments. Rapid maxillary expansion is an important technique as the orthodontist may intervene in possible maxillary constriction problems. The present article aims at describing rapid maxillary expansion in a child by using a Hyrax apparatus. In conclusion the aparatus was efi ccient concerning promoting maxillary disjuncion.


Subject(s)
Humans , Child , Orthodontics , Palatal Expansion Technique , Orthodontic Appliances
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