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1.
Prog Orthod ; 25(1): 19, 2024 May 27.
Article in English | MEDLINE | ID: mdl-38797777

ABSTRACT

BACKGROUND: Skeletal anterior open bite (SAOB) represents one of the most complex and challenging malocclusions in orthodontics. Orthodontic treatment supported by miniplates enable to reduce the need for orthognathic surgery. Transverse dimension may be affected by intrusion biomechanics. This study aims to assess transverse bone alterations in patients with SAOB who underwent orthodontic treatment with absolute anchorage using four miniplates. METHODS: A total of 32 patients of both sexes, with an average age of 33.8 years, diagnosed with SAOB and treated orthodontically with four miniplates (one in each hemiarch), were selected for this study. Tomographic examinations were performed before (T1) and after (T2) orthodontic treatment. Linear measurements (width of the maxillary base, maxillary alveolar, maxillary root, maxillary dental cusp, mandibular alveolar) and angular measurements (maxillary intermolar angle) were assessed in these images. The Shapiro-Wilks normality tests were applied to verify data distribution, and the paired t-test was used to compare the initial and final measures obtained. RESULTS: Among the evaluated parameters, the maxillary alveolar width, maxillary dental cusp width, mandibular alveolar cusp width, and intermolar angle showed statistically significant differences between T1 and T2 (p < 0.05). However, maxillary base and maxillary root widths showed no significant difference (p > 0.05). CONCLUSIONS: Intrusion and distalization with miniplates in SAOB therapy may lead to significant expansive changes, due to molars cusps width and buccal inclination increase restricted at the alveolar level.


Subject(s)
Bone Plates , Mandible , Open Bite , Orthodontic Anchorage Procedures , Humans , Orthodontic Anchorage Procedures/instrumentation , Orthodontic Anchorage Procedures/methods , Male , Female , Open Bite/therapy , Open Bite/diagnostic imaging , Adult , Mandible/diagnostic imaging , Maxilla/diagnostic imaging , Cephalometry , Alveolar Process/diagnostic imaging , Tooth Movement Techniques/instrumentation , Tooth Movement Techniques/methods , Tomography, X-Ray Computed/methods , Young Adult , Orthodontic Appliance Design
2.
Cranio ; : 1-11, 2022 Nov 23.
Article in English | MEDLINE | ID: mdl-36419355

ABSTRACT

OBJECTIVE: The main goal of this work was to address craniomorphological characteristics of patients with bruxism when compared to those without bruxism using cone beam computed tomography (CBCT) imaging. METHODS: Seventy CBCT images of an equal number (n = 35) of orthodontic patients with and without bruxism (age range, 18-44 years) were retrospectively analyzed. Sagittal evaluation, mandibular shape, and skeletal asymmetry were systematically assessed in both groups. RESULTS: Significant differences (p < 0.05) were observed between groups for Right Articular Fossa (AF) - Axial Plane (AP) and Left AF - AP (B > NB), Right Gonial Angle (GA), Left GA, Sella-Nasion and Occlusal Plane (B < NB). Age (13%), Condyle-Gonion (18%), AF to AP (67%), and Mental-AP (16%) had the greatest impact on bruxers. CONCLUSION: In this study, the CBCT 3D image showed significant differences in craniofacial morphology, particularly in the mandibular structure of bruxers compared with non-bruxers.

3.
Am J Orthod Dentofacial Orthop ; 162(5): 656-667, 2022 Nov.
Article in English | MEDLINE | ID: mdl-35948464

ABSTRACT

INTRODUCTION: Multiple force vector applications may be indicated when an arch segment or en masse intrusion is needed. This finite element method study aimed to evaluate the total deform the stress yielded in the bone and the miniplate when forces with different directions and magnitudes were applied. METHODS: First, the prototyped skull model was fabricated on the basis of computed tomography (CT) scans. On this model, the miniplate was fixed, and orthodontic appliances were attached. Then, a 3-dimensional finite element model was constructed by reproducing the characteristics of the physical model. Seven situations were investigated, which diverged in the point of force application, the direction and the number of force vectors, and the force magnitudes. RESULTS: When the force was applied at 1 point, similar behavior could be observed concerning the deformation and the stress in the miniplate, the maxilla, and the screw holes. Most deformation and stress appeared in the transmucosal arm below the step bend and at the force application point. The angled vectors (-45° and 30°) presented smaller values concerning the vertical vectors. Similar or better performances could be observed when the forces were simultaneously applied at the 2 points. CONCLUSIONS: The newly designed miniplate showed similar or improved performances when multiple vectors were applied at the 2 points simultaneously compared with the force applied at 1 point. This newly designed miniplate may present improved performance in a clinical situation when multiple forces are demanded.

4.
Dental Press J Orthod ; 27(3): e22ins3, 2022.
Article in English | MEDLINE | ID: mdl-35792793

ABSTRACT

INTRODUCTION: Induced tooth-bone movement occurs by a synchronicity of dental and bone phenomena, thanks to the osteocytic network, which is a three-dimensional network that controls the bone shape or design. OBJECTIVE: To describe the tooth-bone movement induced by enhanced anchorage, divided into three distinct moments: zero, start and stop. QUESTION: From this description, the main question arises: with the use of mini-implants/miniplates, what changes in the biology of induced tooth-bone movement? The answer is: nothing changes, either biologically or microscopically. CONCLUSION: This technique optimizes the treatment time, and the range of therapeutic possibilities is broadened, thanks to the synchronicity of phenomena - which remain the same, in all teeth and bones, yet in a synchronized manner. Bone anchorage represents synchronicity in induced tooth-bone movement.


Subject(s)
Orthodontic Anchorage Procedures , Tooth Movement Techniques , Biology , Bone and Bones , Humans , Orthodontic Anchorage Procedures/methods , Osteocytes , Tooth Movement Techniques/methods
5.
Dental press j. orthod. (Impr.) ; 27(3): e22ins3, 2022. graf
Article in English | LILACS-Express | LILACS, BBO - Dentistry | ID: biblio-1384694

ABSTRACT

ABSTRACT Introduction: Induced tooth-bone movement occurs by a synchronicity of dental and bone phenomena, thanks to the osteocytic network, which is a three-dimensional network that controls the bone shape or design. Objective: To describe the tooth-bone movement induced by enhanced anchorage, divided into three distinct moments: zero, start and stop. Question: From this description, the main question arises: with the use of mini-implants/miniplates, what changes in the biology of induced tooth-bone movement? The answer is: nothing changes, either biologically or microscopically. Conclusion: This technique optimizes the treatment time, and the range of therapeutic possibilities is broadened, thanks to the synchronicity of phenomena - which remain the same, in all teeth and bones, yet in a synchronized manner. Bone anchorage represents synchronicity in induced tooth-bone movement.


RESUMO Introdução: A movimentação osseodentária induzida ocorre meio de uma sincronicidade de fenômenos dentários e ósseos, graças à rede osteocítica, uma rede tridimensional de controle do formato ou design ósseo. Objetivo: Descrever a movimentação osseodentária induzida com ancoragem ampliada, dividindo-a em três momentos distintos: zero, start e stop. Questionamento: Dessa descrição origina-se a principal pergunta: com o uso de mini-implantes/miniplacas, o que muda na biologia da movimentação osseodentária induzida? A resposta é: não muda nada, nem biologicamente, nem microscopicamente. Conclusão: O que se otimiza, com essa técnica, é o tempo de tratamento, e se amplia o leque de possibilidades terapêuticas, graças à sincronicidade dos fenômenos - que continuam sendo os mesmos, em todos os dentes e nos ossos, só que de forma sincronizada. A ancoragem óssea representa a sincronicidade na movimentação osseodentária induzida.

6.
Dental Press J Orthod ; 26(5): e21ins5, 2021.
Article in English | MEDLINE | ID: mdl-35640084

ABSTRACT

OBJECTIVE: Biologically explain some of the bone mechanisms involved in the intrusion, or intrusive effect, of teeth submitted to skeletal open bite correction using four miniplates. METHODS: The results of dental intrusion were measured and compared in 3D reconstructions of cone beam computed tomography scans taken before and after treatment of 20 patients with skeletal open bite, aged between 18 and 59 years. RESULTS: The results allow deducing that the compression and traction forces biologically promoted deformation or deflection of the osteocyte network that controls bone design, and these effects involved the external and internal surfaces of the bone, with the formation of new layers, including the cervical portion of the alveolar bone crest. This helps understanding how dental intrusion occurs in intrusive mechanics, whose forces are of inclination rather than intrusion. The root resorptions caused by the use of miniplates were insignificant, due to the more homogeneous distribution of forces in the several teeth simultaneously involved. CONCLUSION: Imaging studies in CT scans tend to capture in details the subperiosteal and endosteal phenomena of dental intrusion - before and after the application of intrusive mechanics -, in the form of a set of modifications called dental intrusion or intrusive effect .


Subject(s)
Open Bite , Orthodontic Anchorage Procedures , Root Resorption , Tooth , Adolescent , Adult , Humans , Middle Aged , Open Bite/therapy , Orthodontic Anchorage Procedures/methods , Tooth Movement Techniques/methods , Young Adult
7.
Dental press j. orthod. (Impr.) ; 26(5): e21ins5, 2021. graf
Article in English | LILACS, BBO - Dentistry | ID: biblio-1345941

ABSTRACT

ABSTRACT Objective: Biologically explain some of the bone mechanisms involved in the intrusion, or intrusive effect, of teeth submitted to skeletal open bite correction using four miniplates. Methods: The results of dental intrusion were measured and compared in 3D reconstructions of cone beam computed tomography scans taken before and after treatment of 20 patients with skeletal open bite, aged between 18 and 59 years. Results: The results allow deducing that the compression and traction forces biologically promoted deformation or deflection of the osteocyte network that controls bone design, and these effects involved the external and internal surfaces of the bone, with the formation of new layers, including the cervical portion of the alveolar bone crest. This helps understanding how dental intrusion occurs in intrusive mechanics, whose forces are of inclination rather than intrusion. The root resorptions caused by the use of miniplates were insignificant, due to the more homogeneous distribution of forces in the several teeth simultaneously involved. Conclusion: Imaging studies in CT scans tend to capture in details the subperiosteal and endosteal phenomena of dental intrusion - before and after the application of intrusive mechanics -, in the form of a set of modifications called dental intrusion or intrusive effect .


RESUMO Objetivo: Explicar, biologicamente, alguns dos mecanismos ósseos envolvidos na intrusão, ou efeito intrusivo, de dentes submetidos à correção da mordida aberta esquelética por meio do uso de quatro miniplacas. Métodos: Foram mensurados, em reconstruções 3D de tomografias computadorizadas de feixe cônico, os resultados da intrusão dentária, comparando-se o antes e o depois em 20 pacientes com mordida aberta esquelética, com idades entre 18 e 59 anos. Resultados: Os resultados permitem deduzir que as forças de compressão e de tração promovem, biologicamente, deformação ou deflexão da rede osteocítica controladora do design ósseo, e esses efeitos envolvem as superfícies externas e internas do osso, com formação de novas camadas, incluindo a parte cervical da crista óssea alveolar. Isso ajuda a compreender como ocorre a intrusão dentária nas mecânicas intrusivas cujas forças são de inclinação, e não de intrusão. As reabsorções radiculares promovidas pelo uso de miniplacas são insignificantes, em função da distribuição mais homogênea das forças nos vários dentes simultaneamente envolvidos. Conclusão: Os estudos imagiológicos tendem a captar, nas tomografias, cada vez mais detalhadamente os fenômenos subperiosteais e endosteais da intrusão dentária nos pacientes - antes e depois da aplicação das mecânicas intrusivas -, na forma de um conjunto de modificações que se chama intrusão dentária ou efeito intrusivo.


Subject(s)
Humans , Adolescent , Adult , Young Adult , Root Resorption , Tooth , Open Bite/therapy , Orthodontic Anchorage Procedures/methods , Tooth Movement Techniques/methods , Middle Aged
8.
Dental Press J Orthod ; 25(4): 16-22, 2020.
Article in English | MEDLINE | ID: mdl-32965382

ABSTRACT

INTRODUCTION: When miniplates are used as anchoring for orthodontic mechanics for anterior open bite correction by retraction of anterior teeth and posterior teeth intrusion and retraction, orthodontically induced inflammatory external apical root resorption is clinically negligible. METHODS: A homogeneous sample of 32 patients was used, and the roots of the teeth were compared on CT scans performed before and after orthodontic treatment. RESULTS: The observed root resorption was minimal, and this can be explained by the uniform distribution of forces in several teeth, simultaneously, in the set of the dental arch and in the bone that supports the teeth. 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.


Subject(s)
Open Bite/diagnostic imaging , Open Bite/therapy , Orthodontic Anchorage Procedures , Root Resorption/diagnostic imaging , Root Resorption/etiology , Tooth Resorption , Humans , Tooth Movement Techniques/adverse effects
9.
Dental press j. orthod. (Impr.) ; 25(4): 16-22, July-Aug. 2020. graf
Article in English | LILACS, BBO - Dentistry | ID: biblio-1133678

ABSTRACT

ABSTRACT Introduction: When miniplates are used as anchoring for orthodontic mechanics for anterior open bite correction by retraction of anterior teeth and posterior teeth intrusion and retraction, orthodontically induced inflammatory external apical root resorption is clinically negligible. Methods: A homogeneous sample of 32 patients was used, and the roots of the teeth were compared on CT scans performed before and after orthodontic treatment. Results: The observed root resorption was minimal, and this can be explained by the uniform distribution of forces in several teeth, simultaneously, in the set of the dental arch and in the bone that supports the teeth. 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 Introdução: 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 ortodonticamente são clinicamente irrelevantes. Métodos: Usou-se uma amostra homogênea de 32 pacientes, e comparou-se as raízes dos dentes em tomografias realizadas antes e depois do tratamento ortodôntico. Resultados: As reabsorções radiculares observadas foram mínimas, e isso pode ser explicado pela distribuição uniforme das forças em vários dentes, simultaneamente, no conjunto da arcada dentária e no osso que suporta os dentes. Conclusão: O mais importante para se prevenir as reabsorções radiculares na prática ortodôntica, além de se preocupar com a intensidade das forças aplicadas, é tomar cuidado com a sua distribuição ao longo das raízes de cada dente, na arcada dentária e no osso que suporta os dentes.


Subject(s)
Humans , Root Resorption/etiology , Root Resorption/diagnostic imaging , Tooth Resorption , Open Bite/therapy , Open Bite/diagnostic imaging , Orthodontic Anchorage Procedures , Tooth Movement Techniques/adverse effects
10.
J Clin Exp Dent ; 10(12): e1177-e1183, 2018 Dec.
Article in English | MEDLINE | ID: mdl-30697376

ABSTRACT

BACKGROUND: A cross-sectional survey was conducted to gather information regarding the opinion of Brazilian specialists in both orthodontics and implantology on multidisciplinary oral rehabilitation in partially edentulous patients with malocclusion. MATERIAL AND METHODS: A total of 305 specialists participated in a telephone survey and answered an ad hoc 10-item questionnaire, including the request of total skull cone-beam tomographies (CBCT) and the use of 3D digital planning software, the best moment of treatment to place dental implants, and the integration of orthodontics in implantology. RESULTS: Most participants did not request CBCT (90.8%) or 3D digital planning software images (92.3%) to diagnose and plan multidisciplinary oral rehabilitation. By contrast, 91.1% of participants would use an already dental implant as anchorage for orthodontics, 73.8% had already used implants for this purpose, 47.9% selected 4 months as the waiting time between implant placement and its use as anchorage, and 58.4% had already placed dental implants having in mind using them as anchorage for orthodontics and anticipating the oral rehabilitation process. Moreover, 93.4% of participants stated to avoid applying orthodontic forces in implants with unfavourable prognosis. A total of 67.9% of participants got the degree of specialist in Orthodontics before that of specialist in Implantology. The main reason for obtaining the other specialty degree was to be able to thoroughly exercise the two specialties. CONCLUSIONS: The use of technological advances, such as CBCT and 3D digital planning software was limited. Most dental specialists would wait the osseointegration recommended time before applying orthodontic forces and thus using them as anchorage for orthodontics. The majority of interviewed dentists sought the other specialty to acquire multidisciplinary knowledge. Key words:Cross-sectional study, orthodontics, implantology, partially edentulous, malocclusion, oral rehabilitation.

11.
Ortho Sci., Orthod. sci. pract ; 11(42): 68-73, 2018. ilus
Article in Portuguese | BBO - Dentistry | ID: biblio-908953

ABSTRACT

Uma tomografia de feixe cônico total do crânio associada a um software tridimensional de planejamento digital permite um diagnóstico mais completo e a simulação de diferentes planos de tratamento para a reabilitação oral multidisciplinar de pacientes adultos edêntulos parciais portadores de má oclusão. Um total de 305 cirurgiões-dentistas especialistas, simultaneamente em Ortodontia e em Implantodontia, foram entrevistados e responderam a um questionário com o objetivo de coletar informações importantes sobre a integração da Ortodontia com a Implantodontia para a instalação de implantes dentários em pacientes adultos edêntulos parciais que também necessitam de tratamento ortodôntico. Este estudo foi dividido em uma trilogia de artigos científicos. Esta, a Parte 1, refere-se a perguntas sobre a solicitação de uma tomografia de feixe cônico total do crânio e o uso de softwares tridimensionais de planejamento digital para diagnosticar e planejar reabilitações orais multidisciplinares em pacientes adultos edêntulos parciais portadores de má oclusão. Como a tecnologia já está disponível, era de se esperar uma maior solicitação de tomografias de feixe cônico total do crânio e um maior uso de softwares tridimensionais de planejamento digital por cirurgiões-dentistas, especialistas simultaneamente em Ortodontia e em Implantodontia, mas os resultados mostram o contrário.(AU)


A total skull cone beam tomography associated to a three-dimensional digital planning software permits a more complete diagnostic and the simulation of different treatment plans for the multidisciplinary oral rehabilitation of partially edentulous adult patients with malocclusion. A total of 305 dental specialists in both orthodontics and implantology were interviewed and answered a questionnaire in order to collect relevant information about the integration of orthodontics to implantology for the placement of dental implants on partially edentulous adult patients that also need orthodontic treatment. This study was divided in a trilogy of scientific articles. This, the Part 1, refers to questions about the request of a total skull cone beam tomography and the use of three-dimensional planning softwares to diagnose and plan a multidisciplinary oral rehabilitation for partially edentulous adult patients with malocclusion. As technology is already available, it was expected a higher number of dental specialists in both orthodontics and implantology requesting a total skull cone beam tomography and a greater use of three-dimensional digital planning softwares. But results show the opposite. (AU)


Subject(s)
Cone-Beam Computed Tomography , Immediate Dental Implant Loading , Orthodontics, Corrective
12.
Ortho Sci., Orthod. sci. pract ; 11(43): 78-84, 2018. ilus, graf
Article in Portuguese | BBO - Dentistry | ID: biblio-916255

ABSTRACT

Para se conduzir uma reabilitação oral multidisciplinar em um paciente adulto edêntulo parcial portador de má oclusão deve haver uma equipe de cirurgiões-dentistas especialistas trabalhando sincronizadamente. Juntos, devem definir qual é o melhor plano de tratamento que integre a Ortodontia com a Implantodontia para a obtenção de uma oclusão estável e harmonização facial. No entanto, se um único cirurgião-dentista pretende conduzir uma reabilitação oral multidisciplinar em um paciente adulto edêntulo parcial portador de má oclusão, ele deve reunir habilidades multidisciplinares para competentemente diagnosticar, planejar e conduzir o caso. Um total de 305 cirurgiões-dentistas especialistas simultaneamente em Ortodontia e em Implantodontia foram entrevistados e responderam a um questionário para coletar importantes informações sobre a integração da Ortodontia com a Implantodontia para a instalação de implantes dentários em pacientes adultos edêntulos parciais, que também necessitam de tratamento ortodôntico. Este estudo foi dividido em uma trilogia de artigos científicos. Esta, a Parte 3, refere-se às perguntas sobre a primeira formação especializada desses cirurgiões-dentistas e os motivos que os levaram a cursar outra especialidade para integrar a Ortodontia com a Implantodontia. Os resultados demonstraram que a maioria dos cirurgiões-dentistas entrevistados buscou adquirir conhecimentos multidisciplinares, mas que a busca por maiores ganhos financeiros também foi um dos principais motivos para a obtenção de outro título de especialista.(AU)


In pursuance of conducting a multidisciplinary oral rehabilitation for a partially edentulous adult patient with malocclusion, there must be a dental specialist team working synchronically. Together they must define the most suitable treatment plan to accomplish stable occlusion and facial harmonization. However, if one single dentist intends to conduct a multidisciplinary oral rehabilitation for a partially edentulous adult patient with malocclusion, he should have the expertise in multiple specialties to competently diagnose, plan and conduct the case. A total of 305 dental specialists in both orthodontics and implantology were interviewed and answered a questionnaire in order to collect relevant information about the integration of orthodontics to implantology to place dental implants on partially edentulous adult patients that also need orthodontic treatment. This study was divided in a trilogy of scientific articles. This, the Part 3, refers to questions about their first post graduate training and the reasons that led them to get another specialist title to integrate orthodontics to implantology. The results showed that the majority of interviewed dentists sought to acquire multidisciplinary knowledge. But the surch for greater financial gains was also one of the main reasons for obtaining another specialist title.(AU)


Subject(s)
Dental Implants , Malocclusion , Mouth Rehabilitation , Orthodontics, Corrective
13.
Ortho Sci., Orthod. sci. pract ; 10(39): 244-264, 2017. ilus, tab
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-868273

ABSTRACT

As más oclusões de Classe III são consideradas desafiadoras no tratamento ortodôntico, por apresentarem um componente genético forte. O retrognatismo maxilar, o prognatismo mandibular e a combinação dessas discrepâncias caracterizam os problemas esqueléticos. A terapia ortodôntica mais recomendada, usualmente, para o tratamento da Classe III em fase de crescimento é a protração maxilar, associada ou não à disjunção da sutura palatina mediana. Vem sendo muito considerada, também, uma técnica com auxílio de miniplacas. Entretanto existem desvantagens nessas técnicas, quanto à colaboração do paciente, à possível instabilidade na fixação das miniplacas devido à faixa etária, dentre outras considerações que estimularam o desenvolvimento de outro sistema para o tratamento da Classe III em pacientes jovens, o Ertty Gap III®. O objetivo desse artigo foi apresentar essa nova forma de tratamento da Classe III em indivíduos jovens. O novo sistema é composto, na dentição mista, por um Hyrax invertido na arcada superior, Placa Lábio Ativa e Barra Lingual Fundida na arcada inferior e por elástico de Classe III. Em casos de dentadura permanente, o elástico de Classe III é colocado no bráquete do canino inferior. Foi alcançado um excelente resultado clínico no caso ilustrado, pois se obteve melhora no perfil facial, correção dentoalveolar da Classe III e redirecionamento do crescimento maxilomandibular. Sendo assim, o Ertty Gap III® é uma técnica viável de ser aplicada. Além disso, é um sistema estético de baixo custo e apresenta uma mecânica ortopédica e/ou ortodôntica simples, que o torna de fácil entendimento e domínio profissional durante sua aplicação (AU)


Class III malocclusions are considered challenging in orthodontic treatment, because they present a strong genetic component. Maxillary retrognathism, mandibular prognathism and the combination of these discrepancies characterize skeletal problems. The most commonly recommended orthodontic therapy for the treatment of Class III in the growth phase is maxillary protraction, associated or not with the disjunction of the medial palatine suture. A technique with the aid of miniplates has also been greatly considered. However, there are drawbacks in these techniques, such as patient collaboration, possible instability in fixation of miniplates due to age, among other considerations that stimulated the development of another system for the treatment of Class III in young patients, the Ertty Gap III® . The aim of this article was to present this new form of Class III treatment in young individuals. The new system is composed, in the mixed dentition, by an inverted Hyrax in the upper arch, a Lip-Active Plate and a Fused Lingual Bar in the lower arch and by Class III elastic. In cases of permanent dentures, the Class III elastic is placed in the lower canine bracket. An excellent clinical result was achieved in the clinical case presented, as improvement in the facial profile, dentoalveolar Class III correction and redirection of the maxillomandibular growth were obtained. Therefore the Ertty Gap III® is a viable technique to be applied. In addition, it is an aesthetic system with low cost, and it presents simple orthopedic and/or orthodontic mechanics, which makes it easy for both understanding and professional domain during its application.(AU)


Subject(s)
Humans , Male , Female , Child , Diagnosis , Malocclusion, Angle Class III , Orthodontics , Orthopedics
14.
Dental Press J Orthod ; 19(4): 80-8, 2014.
Article in English | MEDLINE | ID: mdl-25279525

ABSTRACT

INTRODUCTION: Lateral cephalometric radiographs are traditionally required for orthodontic treatment, yet rarely used to assess asymmetries. OBJECTIVE: The objective of the present study was to use lateral cephalometric radiographs to identify existing skeletal and dentoalveolar morphological alterations in Class II subdivision and to compare them with the existing morphology in Class I and II relationship. MATERIAL AND METHODS: Ninety initial lateral cephalometric radiographs of male and female Brazilian children aged between 12 to 15 years old were randomly and proportionally divided into three groups: Group 1 (Class I), Group 2 (Class II) and Group 3 (Class II subdivision). Analysis of lateral cephalometric radiographs included angular measurements, horizontal linear measurements and two indexes of asymmetry that were prepared for this study. RESULTS: In accordance with an Index of Dental Asymmetry (IDA), greater mandibular dental asymmetry was identified in Group 3. An Index of Mandibular Asymmetry (IMA) revealed less skeletal and dental mandibular asymmetry in Group 2, greater skeletal mandibular asymmetry in Group 1, and greater mandibular dental asymmetry in Group 3. CONCLUSION: Both IDA and IMA revealed greater mandibular dental asymmetry for Group 3 in comparison to Groups 1 and 2. These results are in accordance with those found by other diagnostic methods, showing that lateral cephalometric radiography is an acceptable method to identify existing skeletal and dentoalveolar morphological alterations in malocclusions.


Subject(s)
Cephalometry/methods , Facial Asymmetry/diagnostic imaging , Malocclusion, Angle Class II/diagnostic imaging , Malocclusion, Angle Class I/diagnostic imaging , Adolescent , Alveolar Process/diagnostic imaging , Child , Chin/diagnostic imaging , Dental Arch/diagnostic imaging , Facial Asymmetry/classification , Facial Bones/diagnostic imaging , Female , Humans , Incisor/diagnostic imaging , Male , Malocclusion, Angle Class II/classification , Mandible/diagnostic imaging , Maxilla/diagnostic imaging , Molar/diagnostic imaging , Nasal Bone/diagnostic imaging , Palate/diagnostic imaging , Radiography , Retrognathia/classification , Retrognathia/diagnostic imaging , Sella Turcica/diagnostic imaging
15.
Dental press j. orthod. (Impr.) ; 19(4): 80-88, Jul-Aug/2014. tab, graf
Article in English | LILACS | ID: lil-725414

ABSTRACT

INTRODUCTION: Lateral cephalometric radiographs are traditionally required for orthodontic treatment, yet rarely used to assess asymmetries. OBJECTIVE: The objective of the present study was to use lateral cephalometric radiographs to identify existing skeletal and dentoalveolar morphological alterations in Class II subdivision and to compare them with the existing morphology in Class I and II relationship. MATERIAL AND METHODS: Ninety initial lateral cephalometric radiographs of male and female Brazilian children aged between 12 to 15 years old were randomly and proportionally divided into three groups: Group 1 (Class I), Group 2 (Class II) and Group 3 (Class II subdivision). Analysis of lateral cephalometric radiographs included angular measurements, horizontal linear measurements and two indexes of asymmetry that were prepared for this study. RESULTS: In accordance with an Index of Dental Asymmetry (IDA), greater mandibular dental asymmetry was identified in Group 3. An Index of Mandibular Asymmetry (IMA) revealed less skeletal and dental mandibular asymmetry in Group 2, greater skeletal mandibular asymmetry in Group 1, and greater mandibular dental asymmetry in Group 3. CONCLUSION: Both IDA and IMA revealed greater mandibular dental asymmetry for Group 3 in comparison to Groups 1 and 2. These results are in accordance with those found by other diagnostic methods, showing that lateral cephalometric radiography is an acceptable method to identify existing skeletal and dentoalveolar morphological alterations in malocclusions. .


INTRODUÇÃO: as telerradiografias laterais são tradicionalmente solicitadas para planejamento ortodôntico, mas raramente utilizadas para avaliar assimetrias. OBJETIVO: o objetivo do presente estudo foi utilizar as telerradiografias laterais para identificar as alterações morfológicas esqueléticas e dentoalveolares existentes na má oclusão de Classe II subdivisão e compará-las com a morfologia existente nas más oclusões de Classe I e II. MÉTODOS: noventa telerradiografias laterais iniciais de adolescentes brasileiros de ambos os sexos, com idade cronológica entre 12 e 15 anos, foram divididas em três grupos randomizados e proporcionais: Grupo 1 (Classe I), Grupo 2 (Classe II) e Grupo 3 (Classe II subdivisão). A análise das telerradiografias laterais envolveu mensurações angulares, mensurações lineares horizontais e dois índices de assimetria, estipulados para o presente estudo. RESULTADOS: foi identificada, de acordo com o Índice de assimetria dentária (IAD), uma maior assimetria dentária inferior no Grupo 3. O Índice de assimetria mandibular (IAM) revelou menor assimetria esquelética e dentária no Grupo 2, maior assimetria esquelética no Grupo 1 e maior assimetria dentária inferior no Grupo 3. CONCLUSÃO: o IAD e o IAM mostraram maior assimetria dentária inferior no Grupo 3 do que nos Grupos 1 e 2. Esses resultados estão de acordo com os encontrados em outros métodos de diagnóstico, indicando que a telerradiografia lateral é um método aceitável para avaliar alterações morfológicas esqueléticas e dentoalveolares nas más oclusões. .


Subject(s)
Adolescent , Child , Female , Humans , Male , Cephalometry/methods , Facial Asymmetry , Malocclusion, Angle Class I , Malocclusion, Angle Class II , Alveolar Process , Chin , Dental Arch , Facial Asymmetry/classification , Facial Bones , Incisor , Malocclusion, Angle Class II/classification , Mandible , Maxilla , Molar , Nasal Bone , Palate , Retrognathia/classification , Retrognathia , Sella Turcica
16.
Rev. Clín. Ortod. Dent. Press ; 11(5): 68-77, out.-nov. 2012. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-855896

ABSTRACT

Introdução: a má oclusão de Classe II é caracterizada por um inadequado relacionamento maxilomandibular anteroposterior. Essa má oclusão maxilar e/ou mandibular pode ter origem esquelética e/ou dentoalveolar. Para corrigir a má oclusão esquelética de Classe II com retrognatismo mandibular em pacientes adultos, é necessária a realização de cirurgia ortognática, além do tratamento ortodôntico. Assimetrias dentárias, quando associadas a essa má oclusão, devem ser corrigidas no preparo ortodôntico pré-cirúrgico. Objetivo: apresentar um novo método de preparo ortocirúrgico ilustrado por um caso clínico de paciente com má oclusão de Classe II esquelética com retrognatismo mandibular, associada a assimetria dentária inferior. Métodos: miniplacas de titânio foram usadas como ancoragem temporária para obter maior controle durante a movimentação dos dentes nas arcadas dentárias. Resultados: a assimetria dentária inferior foi facilmente corrigida com a mecânica utilizada, em curto período de tempo e sem efeitos colaterais indesejados. Subsequentemente, o avanço mandibular e a mentoplastia foram realizados cirurgicamente. Após a finalização ortodôntica, executou-se a reanatomização dentária. Conclusão: esse caso clínico demonstra a importância das miniplacas e da abordagem multidisciplinar (Ortodontia, Cirurgia e Odontologia Estética) para obter sucesso no resultado final do tratamento.


Subject(s)
Humans , Female , Adult , Esthetics, Dental , Interprofessional Relations , Malocclusion, Angle Class II/surgery , Orthodontic Anchorage Procedures/methods
17.
Rev. Clín. Ortod. Dent. Press ; 11(4): 98-113, ago.-set. 2012.
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-855887

ABSTRACT

Introdução: o Ertty System® é um sistema intrabucal de forças biomecânicas para movimentação dentária no sentido anteroposterior. A aplicação de forças do sistema resulta na distalização do molar e de todo o segmento lateral do lado a ser distalizado, incluindo pré-molares e canino, com consequente remodelação óssea alveolar. O sistema é indicado para correção da má oclusão de Classe II dentária maxilar em dentição permanente, uni- ou bilateral, tanto em pacientes jovens quanto em adultos. É contraindicado em caso de assimetrias esqueléticas, biprotrusão dentária, Classe II esquelética e Classe II subdivisão com desvio da linha média dentária inferior. O objetivo deste trabalho foi descrever o Ertty System® e apresentar dois casos clínicos de pacientes com má oclusão de Classe II, subdivisão, e desvio da linha média dentária superior tratados com esse sistema. Resultado: obteve-se um correto alinhamento e nivelamento, relação dentária de Classe I e correção da linha média superior. Conclusão: o sucesso e a estabilidade dos resultados confirmaram o correto diagnóstico e tratamento.


Subject(s)
Humans , Female , Adolescent , Adult , Malocclusion, Angle Class II/therapy , Orthodontic Appliance Design , Orthodontic Appliances , Temporomandibular Joint
18.
Rev. Clín. Ortod. Dent. Press ; 2(3): 45-60, jun.-jul. 2003. ilus
Article in Portuguese | BBO - Dentistry | ID: biblio-856087

ABSTRACT

O propósito deste artigo é apresentar um novo método de tratamento das maloclusões de Classe II dentárias uni ou bilaterais, em pacientes jovens ou adultos, sem a necessidade de utilização, em nenhum momento, do aparelho extrabucal. Este sistema de forças biomecânicas, totalmente intra-oral, é de confecção laboratorial e simples adaptação, sendo bem aceito entre os pacientes. Pretendemos, neste artigo, ilustrar o mecanismo de ação do sistema desde a sua construção até a obtenção do resultado esperado, por meio de fotografias e desenhos esquemáticos


Subject(s)
Humans , Male , Female , Adolescent , Biomechanical Phenomena , Malocclusion, Angle Class II/therapy , Molar , Tooth Movement Techniques/adverse effects , Tooth Movement Techniques/methods , Outcome Assessment, Health Care
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