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1.
Dental press j. orthod. (Impr.) ; 27(5): e22ins5, 2022. graf
Article in English | LILACS-Express | LILACS, BBO | ID: biblio-1421342

ABSTRACT

ABSTRACT Introduction: In clinical practice, submerged roots are found with high frequency, and their presence can change the planning of dental movements and implant placement. Objectives: To provide explanations of possible developments in the area involved, according to the evolutionary stage of the process, at the time of diagnosis. Discussion: After atrophy of the periodontal ligament and epithelial remnants of Malassez, ankylosis of the bone with the submerged root occurs, and initiates a process of replacement resorption. Until this process reaches the most advanced stage, this area represents an increased "bone" density, and if some care is not taken, this can generate resorption problems in the tooth to be moved. Whereas implants can be placed, despite the presence of the submerged root, irrespective of the stage of evolution. Conclusion: It is natural for the onset of alveolodental ankylosis and tooth replacement resorption to occur in submerged roots, and its stage of evolution will be decisive in the approach to be adopted in clinical planning.


RESUMO Introdução: A frequência, na prática clínica, das raízes submersas é elevada, e sua presença pode modificar o planejamento de movimentações osteodentárias e da instalação de implantes. Objetivo: Apresentar as explicações das possíveis evoluções na área envolvida, de acordo com o estágio evolutivo do processo, no momento do diagnóstico. Discussão: Depois da atrofia do ligamento periodontal e dos restos epiteliais de Malassez, o osso anquilosa-se com a raiz submersa, e se inicia a reabsorção por substituição. Até se chegar ao estágio mais avançado, essa área representa uma densidade "óssea" aumentada, o que pode gerar problemas reabsortivos no dente a ser movimentado, caso alguns cuidados não sejam tomados. Por outro lado, os implantes podem ser aplicados, apesar da presença da raiz submersa, independentemente da fase evolutiva. Conclusão: É natural que, em raízes submersas, se instale a anquilose alveolodentária e a reabsorção dentária por substituição, e o seu estágio evolutivo será determinante na conduta a ser adotada no planejamento clínico.

2.
Dental press j. orthod. (Impr.) ; 27(3): e22ins3, 2022. graf
Article in English | LILACS-Express | LILACS, BBO | 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.

3.
Int. j. med. surg. sci. (Print) ; 7(4): 1-11, dic. 2020. ilus, tab
Article in Spanish | LILACS | ID: biblio-1151711

ABSTRACT

Según la literatura científica, ¿El láser de baja potencia propicia la aceleración de los movimientos dentarios durante el tratamiento ortodóntico? El objetivo de este trabajo buscasistematizar sobre la capacidad del láser de baja potencia en la aceleración de los movimientos dentarios durante el tratamiento ortodóncico. Para ello, se realizó una revisión sistemática, una búsqueda empleando buscadores booleanos en la plataforma de PubMed. Las palabras clave empleadas para fueron: orthodontic movement, orthodontic tooth movement, orthodontic, orthodontic treatment, low level laser therapy, low level laser,laser therapy y la combinación entre ellos. Las investigaciones incluidas trataron el tema de la aceleración del movimiento dentario durante el tratamiento de ortodoncia empleando láser de baja potencia. Se incluyeron en este estudio publicaciones de revistas indexadas en PubMed, ensayos clínicos, en idioma inglés y que correspondieran a artículos publicados desde el año 2000 a la fecha. A si también,se realizó evaluación del riesgo de sesgo. Las variables analizadas fueron: autor principal, título, año, tipo de artículo, revista, país de investigación y si los artículos demuestran que el láser de baja potencia aumenta el movimiento dentario durante el tratamiento ortodóncico. Los resultados arrojaron que el 60% de los estudios incluidos concluyen que el láser de baja potencia acelera el movimiento dentario durante el tratamiento de ortodoncia; el 30% de estos no encontraron cambios significativos con relación a los grupos estudiados con los de control y un 10% resultó en conclusiones dudosas. Por lo tanto, a pesar de que los resultados son alentadores por la tendencia en que el láser de baja potencia si acelera los movimientos ortodónticos, sería necesaria la presencia de un número superior de estudios clínicos aleatorizados para un esclarecimiento específico de las bondades que aporta esta terapia al sector.


According to scientific literature, does low-power laser promote acceleration of tooth movements during orthodontic treatment? The objective for this work seeksto systematize the ability of the low-power laser to accelerate tooth movements during orthodontic treatment.For this,a systematic review was carried out, a search using Boolean search engines on the PubMed platform. The keywords used for were: orthodontic movement, orthodontic tooth movement, orthodontic, orthodontic treatment, low level laser therapy, low level laser, laser therapy and the combination between them. The included investigations dealt with the issue of acceleration of tooth movement during orthodontic treatment using low-power laser, were from journals indexed in PubMed, clinical trials, in English, and corresponded to articles published since 2000 to date. Assessment of risk of bias was performed. The variables analyzed were: main author, title, year, type of article, journal, country of research, and whether the articles show that low-power laser increases tooth movement during orthodontic treatment.The results showed that 60% of the included studies conclude that the low-power laser accelerates tooth movement during orthodontic treatment, 30% of these did not find significant changes in relation to the groups studied with those of control and 10% resulted in dubious conclusions. Thus, although the results are encouraging due to the trend in which the low-power laser does accelerate orthodontic movements, the presence of a higher number of randomized clinical studies would be necessary for a specific clarification of the benefits that this therapy brings to the patient. sector.


Subject(s)
Orthodontics , Tooth Movement Techniques , Low-Level Light Therapy
4.
J. appl. oral sci ; 28: e20190766, 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1134790

ABSTRACT

Abstract Objective To compare two corticotomy surgical protocols in rats to verify whether they alter conventional orthodontic movement. Methodology Sixty Wistar rats were divided into three groups - orthodontic movement (CG), orthodontic movement and corticotomy (G1) and orthodontic movement with corticotomy and decortication (G2) - and euthanized after 7 and 14 days. Tooth movement (mm), bone volume fraction and bone volume ratio to total volume (BV/TV), and bone mineral density (BMD) were evaluated by micro-CT. The total amount of bone was measured in square millimeters and expressed as the percentage of bone area in the histomorphometry. The number of positive TRAP cells and RANK/RANKL/OPG interaction were also investigated. Results Day 14 showed a statistically significant difference in orthodontic tooth movement in CG compared with G1 (7.52 mm; p=0.009) and G2 (7.36 mm; p=0.016). A micro-CT analysis revealed a difference between CG, G1 and G2 regarding BV/TV, with G1 and G2 presenting a lower BV/TV ratio at 14 days (0.77 and 0.73 respectively); we found no statistically significant differences regarding BMD. There was a difference in the total amount of bone in the CG group between 7 and 14 days. At 14 days, CG presented a significantly higher bone percentage than G1 and G2. Regarding TRAP, G2 had more positive cells at 7 and 14 days compared with CG and G1. Conclusion Corticotomy accelerates orthodontic movement. Decortication does not improve corticotomy efficiency.


Subject(s)
Animals , Rats , Tooth Movement Techniques , Alveolar Process , Periodontium , Rats, Wistar , X-Ray Microtomography
5.
Dental press j. orthod. (Impr.) ; 24(5): 20-28, Sept.-Oct. 2019. graf
Article in English | LILACS | ID: biblio-1039666

ABSTRACT

ABSTRACT The replacement of natural teeth that have extreme external apical root resorption, induced by orthodontic treatment, with osseointegrated implants is not justifiable biologically or clinically. These teeth should be preserved and keep their normal functions, as there is no greater mobility, pain or color change. They may undergo usual procedures, such as bleaching, restorations with veneers and other esthetic procedures that may be necessary along life. The pulp of these teeth is normal. If mobility of a tooth with extreme resorption is identified, the cause of mobility should be investigated, as it is not associated with resorption, not even at advanced stages. Tooth mobility may be associated with recent removal of orthodontic appliance, occlusal trauma, chronic inflammatory periodontal disease, or even severe cervical bone loss. In such cases, the cause of mobility should be eliminated and possible sequelae should be corrected, because these, and not root resorption, may actually require retention.


RESUMO A troca de dentes naturais com reabsorções inflamatórias externas apicais extremas, induzidas ortodonticamente, por implantes osseointegráveis não se justifica, biológica ou clinicamente. Esses dentes devem ser mantidos, cumprindo suas funções normais, pois não apresentam aumento de mobilidade, nem dor ou alteração de cor, podendo ser submetidos a procedimentos comuns, como clareamento, facetas e outras abordagens estéticas necessárias ao longo da vida. A polpa desses dentes é normal. Se os dentes com reabsorção extrema se apresentarem com mobilidade, deve-se buscar a causa dessa mobilidade, que não está associada à reabsorção, mesmo quando avançada. A mobilidade dentária deve estar relacionada com a recente remoção do aparelho ortodôntico, trauma oclusal, doença periodontal inflamatória crônica ou, ainda, com perda óssea cervical severa. Nesses casos, para eliminar a mobilidade, deve-se eliminar a causa e corrigir as sequelas, que - essas sim - podem necessitar de contenção, mas não pela reabsorção radicular.


Subject(s)
Humans , Root Resorption , Tooth Mobility , Tooth Injuries , Dental Pulp , Esthetics, Dental
6.
Dental press j. orthod. (Impr.) ; 22(5): 25-29, Sept.-Oct. 2017. graf
Article in English | LILACS | ID: biblio-891096

ABSTRACT

ABSTRACT The low prevalence of gingival recessions observed in orthodontic clinical practice may be assigned to the fact that in studies in which dehiscences and bone fenestrations are described as frequent, they were diagnosed based on: 1) dry skull studies; 2) areas with periosteal reflection together with flap; and 3) imaging techniques with low sensitivity to detect these defects, which have a delicate structure and function. In areas of pseudo-dehiscences and fenestrations, the periosteum and the alveolar cortical bone are very thin; also, they either have been removed during preparation of the dry specimens in the areas for analysis, or, alternatively, have not been investigated using an ideal imaging method.


RESUMO A ausência de prevalência elevada das recessões gengivais relacionadas à prática clínica ortodôntica se explica, provavelmente, porque, nos trabalhos em que as deiscências e fenestrações ósseas são descritas como frequentes, essas foram diagnosticadas a partir de: 1) estudos em crânios secos; 2) áreas com rebatimento periosteal junto com o retalho; e 3) uso de métodos imagiológicos que falham em sensibilidade para captá-las, pela sua delicadeza estrutural e funcional. Nessas áreas de pseudodeiscências e fenestrações, existe periósteo e cortical óssea alveolar muito fina, que foram eliminados nos procedimentos de preparação dos espécimes secos, nas áreas para a análise ou, então, não se aplicou um método imagiológico ideal.


Subject(s)
Humans , Alveolar Bone Loss/pathology , Alveolar Bone Loss/diagnostic imaging , Dental Research/methods , Alveolar Process/pathology , Alveolar Process/diagnostic imaging , Orthodontics , Periosteum/pathology , Periosteum/diagnostic imaging , Diagnostic Errors/prevention & control , Gingival Recession
7.
Article in Spanish | LILACS | ID: biblio-900280

ABSTRACT

RESUMEN: En la actualidad, el trabajo interdisciplinario es fundamental para la resolución de casos complejos. En el tratamiento de las alteraciones bucales, distintas especialidades pueden aportar a la resolución de un caso. Muchas veces la ortodoncia y periodoncia actúan en combinación para devolver el estado de salud oral al paciente. El caso que se presenta a continuación corresponde al reporte clínico de una pieza dentaria que, encontrándose fuera del reborde alveolar, fue ubicada a través del tratamiento de ortodoncia en la posición adecuada, permitiendo así una recuperación ósea en la zona que mejora el pronóstico de la pieza y del implante en caso de requerirse un reemplazo.


ABSTRACT: Multidisciplinary work is currently very relevant for the resolution of complex cases. In the buccal alterations treatment, many dental specialties can contribute to resolve a case. Orthodontic and periodontic treatments work often together to recover the oral health of a patient. The following case is a report of a tooth with its apical portion outside the alveolar bone. It was repositioned by orthodontic treatment, resulting in bone recovery in that area. This improved the prognosis of the tooth and the implant in case a replacement was needed.


Subject(s)
Humans , Female , Adolescent , Tooth Movement Techniques/methods , Orthognathic Surgical Procedures/methods , Alveolar Process , Bone Regeneration
8.
Dental press j. orthod. (Impr.) ; 22(3): 21-25, May-June 2017. graf
Article in English | LILACS | ID: biblio-891075

ABSTRACT

ABSTRACT Obesity is a wide-spread condition directly or indirectly connected with an increase in the prevalence of a variety of human diseases. It affects over 50% of the western overall population. In 2017, a thorough analysis of 204 studies on obesity and cancer revealed that the condition increases the risk of the following types of cancer: stomach, colon, rectal, bile duct, pancreatic, esophagus, breast, endometrial, ovarian, kidney and multiple myeloma. The first study aiming at establishing a connection between obesity and the rate of induced orthodontic tooth movement was conducted by Saloom et al; however, it could not effectively nor significantly reveal any direct influence or effect. Despite being identified during the first week, differences could not be explained and treatment time remained unchanged. In spite of lack of studies in the literature on the connection between obesity and the rate of induced tooth movement, in clinical practice, courses or specialized training, we should not have protocols changed nor adopt any measures or expect significant differences between normal-weight and obese individuals. It should be emphasized that unsuccessful cases or cases of root resorption associated with treatment should not be assigned to obesity, since scientific data is insufficient to do so.


RESUMO A obesidade representa uma epidemia que afeta mais de 50% da população ocidental e está, direta ou indiretamente, relacionada com o aumento na prevalência de algumas doenças humanas. Em 2017, em uma análise minuciosa de 204 trabalhos sobre a obesidade e o câncer, observou-se que ela aumenta os riscos de câncer de estômago, cólon, reto, vias biliares, pâncreas, esôfago, mama, endométrio, ovário, rim e mieloma múltiplo. O primeiro trabalho que procurou relacionar a obesidade com a velocidade de movimentação dentária ortodôntica foi apresentado por Saloom et al., mas não conseguiu demonstrar, de forma efetiva e significativa uma influência ou efeito direto. As diferenças ocorreram apenas na primeira semana, e sem explicação, mas o tempo total do tratamento não foi alterado. Na prática clínica, em aulas ou nos treinamentos de especialistas, não devemos - tendo em vista a ausência na literatura que correlacione a obesidade e a velocidade da movimentação dentária induzida - mudar protocolos, adotar medidas ou ter expectativas de diferenças significativas entre pessoas com peso normal e obesas. Ressalta-se, ainda, que casos de insucesso e/ou de reabsorções radiculares associadas ao tratamento nesses pacientes não devem ser atribuídos à obesidade, pois não há base científica para isso.


Subject(s)
Humans , Root Resorption , Tooth Movement Techniques , Obesity/complications
9.
Int. j. odontostomatol. (Print) ; 11(2): 133-140, June 2017.
Article in English | LILACS | ID: biblio-893241

ABSTRACT

The aim of this report was to analyze the majority of publications referred to orthodontic movement Biological basis, principally strain- pressure theory taking account contemporaneous methodological study designs. The literature published in Pubmed from 1967 to 2014 was reviewed, in addition to well-known scientific reports that were not classified under this database like classical manuscripts since 1839. The comment items are: Limitations of animal models, Histological slices, what to watch for, Rats as an experimental model in orthodontics, Strain­pressure, the force used in these studies that fundament this theory, Reevaluation studies about strain-pressure theory in biology movement using contemporaneous models, Up to date concepts, Theory reevaluation the first step to understanding new acceleration concepts and Movement biology research, present and future. After analyzing those items we concluded: A 3D perspective is essential for a complete understanding of events in tooth movement involves two interrelated processes: the bending of alveolar bone and remodeling of the periodontal tissues. It's important to start, and acknowledge that the PDL cannot be divided into two different areas that react independently to an applied force. It´s a continuous periodontal compartment in OTM, rather than a pressure side and a tension side. When an orthodontic force is applied there are two simultaneous effects that correlate. Alveolar bone flexion and remodeling of the periodontal tissues. Alveolar Bone deformation compromising the main structures (PDL, bone and cement), compression and tension can coexist in different directions. The magnitudes of compression and tension are typically different in different directions. As the majority of research and studies indicate that fundamental movement biology are made on animal models, it is important to know that their results and conclusions, under the actual evidenced based practice guidelines do not allow to make clinical decisions even if they are included on systematic reviews.


El objetivo de esta revisión es analizar la mayoría de las publicaciones relacionadas a la fundamentación sobre el movimiento de ortodoncia, principalmente la teoría presión-tensión, teniendo en cuenta los diseños de estudios metodológicos contemporáneos. Se revisó la literatura publicada en la base de datos de MEDLINE, 1967-2013 , además de los informes conocidos que no fueron clasificados en esta base de datos como manuscritos clásicos desde 1839. Los temas principales en los que se divide el artículo son: Limitaciones de los modelos animales, cortes histológicos, las ratas como modelo experimental en ortodoncia, la fuerza utilizada en los estudios que fundamentan esta teoría, reevaluación sobre los estudios de la teoría presión ­tensión en modelos contemporáneos, conceptos actuales en biología del movimiento, reevaluación de la teoría: el primer paso para entender los nuevos métodos en aceleración del movimiento, conceptos e investigaciones en biología del movimiento: presente y futuro. Una perspectiva 3D es esencial para una comprensión completa de los acontecimientos. El movimiento dental implica dos procesos interrelacionados: la curvatura del hueso alveolar y la remodelación de los tejidos periodontales. Es importante empezar, y reconocer que el PDL no puede ser dividido en dos áreas diferentes que reaccionan de forma independiente a una fuerza aplicada. Está en un compartimiento continuo periodontal , en lugar de un lado de presión y un lado de tensión. Al aplicar una fuerza de ortodoncia hay dos efectos simultáneos: la flexión del hueso Alveolar y la remodelación de los tejidos periodontales. La deformación del hueso compromete las estructuras principales (PDL, hueso y cemento) y la compresión y la tensión pueden coexistir en diferentes direcciones.


Subject(s)
Humans , Dental Research , Low-Level Light Therapy/methods , Tooth Movement Techniques/methods , Biological Products/therapeutic use , Acceleration
10.
Rev. odontol. mex ; 21(1): 8-12, ene.-mar. 2017. tab, graf
Article in Spanish | LILACS | ID: biblio-902712

ABSTRACT

Resumen: El objetivo del estudio fue determinar la asociación del tipo de movimiento ortodóntico y recesiones gingivales luego del tratamiento ortodóntico. Material y métodos: Serie de casos clínicos que incluyó a 15 pacientes jóvenes a quienes se evaluó la condición del periodonto de protección de los dientes anterosuperiores y anteroinferiores antes y después del tratamiento ortodóntico. El tipo de recesión gingival fue evaluado a través de la clasificación de Miller; el tipo de movimiento ortodóntico fue clasificado como: movimientos de vestibularización, protrusión, retrusión, intrusión, extrusión y movimientos combinados. Resultados: De un total de 180 piezas dentarias evaluadas, el 22.2% evidenció recesiones gingivales Miller clase I. El 27.5% de recesiones gingivales fueron asociadas con movimientos de vestibularización. No se encontró asociación entre el tipo de movimiento ortodóntico y la presencia de recesiones gingivales (p > 0.05). Conclusión: La cantidad de recesiones gingivales postoperatorias al tratamiento ortodóntico es pequeña y no posee asociación con el tipo de movimiento ortodóntico.


Abstract: The objective of the present study was to determine association between orthodontic movement type and gingival recession after orthodontic treatment. Material and methods: A series of clinical cases of 15 young patients. Circumstances of the protective periodontium of anterior upper and lower teeth were assessed before and after orthodontic treatment. Gingival recession type was assessed with Miller's classification, orthodontic movement type was classiル ed into: vestibular inclination, protrusion, retrusion, intrusion, extrusion and combined movements. Results: Out of 180 teeth examined, 22.2% exhibited Miller class I gingival recession; 27.5% of all gingival recessions were associated to vestibular inclination movements. No association was found between type of orthodontic movement and presence of gingival recession (p > 0.05). Conclusion: The amount of postoperative gingival recessions observed after orthodontic treatment was negligible and did not show association with orthodontic movement type.

11.
Int. j. odontostomatol. (Print) ; 10(3): 483-490, dic. 2016. ilus
Article in English | LILACS | ID: biblio-840999

ABSTRACT

The aim of this study was to assess whether the application of low-level laser therapy (LLLT) during the first stage of orthodontic treatment has an effect on local bone resorption and is detectable at the systemic level by measuring deoxypyridinoline levels (Pyrilinks) in urine. This was a randomized (1:1), double-blind, active-controlled, parallel-group trial. 28 adult patients who were going to start orthodontic treatment were randomly divided into the control group (n: 13) and the experimental group (n: 15), the latter of which received LLLT. All of the subjects underwent testing of urine samples: the first one on the day before the beginning of orthodontic treatment (T0), and the second one 5 days after bracket placement to measure Pyrilinks values (Dpd/Cr) in urine. Group differences were evaluated with Student's paired t-test. At the beginning of the study, the Pyrilinks were in the normal range for 53.57 % of the patients, and 46.43 % had elevated values according to the normal ranges. Only taking into account the normal values at (T0), the average Pyrilinks for control group (T0) were 5.75± 1.20 nM/mM, (T1): 6.02±3.00 nM/mM. For experimental group, (T0) was 5.71± 0.72, and it was 6.63± 0.73 in (T1).There were no significant differences in the Pyrilinks changes. (p= 0.75). In the experimental group levels raised statistically significant (p = 0.009). LLLT on patients starting orthodontic treatment with normal Pyrilinks levels have a statistically significant increment on their levels 5 days post irradiation.


El objetivo de este trabajo fue evaluar si la aplicación de la terapia láser de bajo nivel (TLBN) durante la primera etapa del tratamiento ortodóncico tiene un efecto sobre la resorción ósea local y es detectable a nivel sistémico midiendo los niveles de desoxipiridinolina en la orina. Se trató de un ensayo aleatorizado (1:1), doble ciego, controlado de forma activa y paralelo. 28 pacientes adultos que iban a iniciar el tratamiento de ortodoncia se dividieron al azar en el grupo control (n: 13) y el grupo experimental (n: 15), el último de los cuales recibió TLBN. Todos los sujetos fueron sometidos a pruebas de muestras de orina: la primera en el día anterior al inicio del tratamiento ortodóncico (T0) y la segunda 5 días después de la colocación del bracket para medir los valores de Pyrilinks (Dpd / Cr) en la orina. Las diferencias grupales se evaluaron con la prueba t de Student pareada. Al inicio del estudio, los Pyrilinks estaban en el rango normal para 53,57 % de los pacientes, y 46,43 % tenían valores elevados según los rangos normales. Sólo teniendo en cuenta los valores normales en (T0), los Pyrilinks medios para el grupo de control (T0) fueron 5,75 ± 1,20 nM / mM, (T1): 6,02 ± 3,00 nM / mM. Para el grupo experimental, (T0) fue de 5,71 ± 0,72, y fue de 6,63 ± 0,73 en (T1). No hubo diferencias significativas en los cambios de Pyrilinks. (P = 0,75). En el grupo experimental los niveles aumentaron estadísticamente (p = 0,009). LLLT en los pacientes que comienzan el tratamiento ortodóncico con niveles normales de Pyrilinks tienen un incremento estadísticamente significativo en sus niveles 5 días después de la irradiación.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Young Adult , Bone Resorption/urine , Low-Level Light Therapy , Tooth Movement Techniques/methods , Amino Acids/urine
12.
ImplantNewsPerio ; 1(7): 1395-1400, out.-nov. 2016. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-848038

ABSTRACT

A retração gengival é comum em pacientes de ambos os sexos e de idades variadas, e é caracterizada pela migração apical da margem gengival com exposição da superfície radicular. A resolução dessa alteração tem sido considerada um dos principais objetivos da terapia cirúrgica periodontal com a intenção de atingir um completo recobrimento radicular. No presente caso clínico, o paciente possuía uma retração gengival classe II de Miller na região do elemento 41, decorrente da movimentação ortodôntica feita no mesmo. A realização de uma análise minuciosa do caso é importante para selecionar a técnica cirúrgica, que neste relato foi a de enxerto de tecido conjuntivo subepitelial. O acompanhamento pós-cirúrgico foi realizado, constatando o aumento da gengiva queratinizada, com um bom recobrimento radicular e uma melhora significativa, tanto na estética como na higiene.


Gingival recession is common in patients of both genders and various ages, being characterized by apical migration of the gingival margin exposing the root surface. The resolution of this change has been considered a major goal of periodontal surgical therapy with the intention of achieving complete root coverage. In the present clinical case reported the patient had a Miller class II gingival recession in the region of element 41, due to the orthodontic movement. A detailed analysis of this case provided the subepithelial connective tissue graft as the best solution. At the follow-up, the band of keratinized tissue increased along with a good root coverage and signifi cant improvements on esthetics and hygiene aspects.


Subject(s)
Humans , Male , Adult , Connective Tissue/transplantation , Esthetics, Dental , Gingival Recession/therapy , Tissue Transplantation , Tooth Movement Techniques
13.
Article in English | LILACS | ID: lil-787905

ABSTRACT

abstract Gingival recession has direct causes and predisposing factors. Orthodontic treatment is able to prevent recession and even contribute to its treatment, with or without periodontal approach, depending on the type and severity of gingival tissue damage. There is no evidence on the fact that orthodontic treatment alone might induce gingival recession, although it might lead the affected teeth (usually mandibular incisors or maxillary canines) to be involved in situations that act as predisposing factors, allowing direct causes to act and, therefore, trigger recession, especially when the buccal bone plate is very thin or presents with dehiscence. Several aspects regarding the relationship between orthodontic treatment and gingival recession have been addressed, and so has the importance of the periosteum to the mechanism of gingival recession formation. Clinical as well as experimental trials on the subject would help to clarify this matter, of which understanding is not very deep in the related literature.


Resumo As recessões gengivais têm causas diretas e fatores predisponentes. O tratamento ortodôntico pode prevenir as recessões e, até, contribuir para o seu tratamento, com ou sem uma abordagem por parte do periodontista, dependendo do tipo e da severidade do comprometimento dos tecidos gengivais. Não há evidências de que o tratamento ortodôntico possa induzir, de forma primária, as recessões gengivais, muito embora possa levar os dentes envolvidos (comumente, os incisivos inferiores e os caninos superiores) a situações que ajam como fatores predisponentes para que as causas diretas possam atuar e produzir recessões - em especial, quando deixa-se uma tábua óssea vestibular muito fina ou, até, com deiscência. Vários aspectos da relação entre o tratamento ortodôntico e as recessões gengivais já foram abordados, assim como a importância do periósteo no mecanismo de formação delas. Trabalhos clínicos e experimentais sobre o assunto ajudariam a esclarecer o assunto, que ainda se apresenta muito pouco aprofundado na literatura pertinente.


Subject(s)
Humans , Tooth Movement Techniques/adverse effects , Gingival Recession/etiology , Gingival Recession/therapy , Terminology as Topic , Gingival Recession/classification , Gingival Recession/diagnosis
14.
Dental press j. orthod. (Impr.) ; 21(2): 15-27, Mar.-Apr. 2016. graf
Article in English | LILACS | ID: lil-782952

ABSTRACT

Abstract When seeking orthodontic treatment, many adolescents and adult patients present with deciduous teeth. Naturally, deciduous teeth will inevitably undergo exfoliation at the expected time or at a later time. Apoptosis is the biological trigger of root resorption. In adult patients, deciduous teeth should not be preserved, as they promote: infraocclusion, traumatic occlusion, occlusal trauma, diastemata and size as well as morphology discrepancy malocclusion. Orthodontic movement speeds root resorption up, and so do restoring or recontouring deciduous teeth in order to establish esthetics and function. Deciduous teeth cells are dying as a result of apoptosis, and their regeneration potential, which allows them to act as stem cells, is limited. On the contrary, adult teeth cells have a greater proliferative potential. All kinds of stem cell therapies are laboratory investigative non authorized trials.


Resumo Muitos adolescentes e adultos, ao procurar pelo tratamento ortodôntico, apresentam dentes decíduos persistentes. Naturalmente, os dentes decíduos ou se esfoliam na época esperada ou mais tardiamente, de forma inevitável. A apoptose é o gatilho biológico da rizólise. Em adultos, os dentes decíduos não devem ser preservados, pois promovem: infraoclusão, oclusão traumática, trauma oclusal, além de diastemas e má oclusão por discrepância de tamanho e morfologia. O movimento ortodôntico acelera o processo de rizólise, assim como restaurar ou reanatomizar dentes decíduos para inseri-los em uma estética e função. As células dos dentes decíduos estão morrendo por apoptose e seu potencial regenerativo para atuarem como células-tronco tem limitações, ao contrário das células de dentes adultos, que têm maior potencial proliferativo. Todas as terapias com células-tronco ainda são laboratoriais e se enquadram como ensaios investigativos não autorizados.


Subject(s)
Adult , Orthodontics, Corrective/methods , Stem Cells/physiology , Stem Cells/pathology , Tooth, Deciduous/cytology , Tooth Extraction , Periodontal Ligament/physiopathology , Periodontal Ligament/pathology , Root Resorption/physiopathology , Root Resorption/pathology , Tooth, Deciduous/pathology , Tooth Movement Techniques , Apoptosis/physiology , In Situ Nick-End Labeling , Cell Proliferation/physiology
15.
Dental press j. orthod. (Impr.) ; 20(6): 16-31, Nov.-Dec. 2015. graf
Article in English | LILACS | ID: lil-770281

ABSTRACT

Abstract The tridimensional network formed by osteocytes controls bone design by coordinating cell activity on trabecular and cortical bone surfaces, especially osteoblasts and clasts. Miniplates and mini-implants provide anchorage, allowing all other orthodontic and orthopedic components, albeit afar, to deform and stimulate the network of osteocytes to command bone design remodeling upon "functional demand" established by force and its vectors. By means of transmission of forces, whether near or distant, based on anchorage provided by miniplates, it is possible to change the position, shape and size as well as the relationship established between the bones of the jaws. Understanding bone biology and the continuous remodeling of the skeleton allows the clinician to perform safe and accurate rehabilitation treatment of patients, thus increasing the possibilities and types of intervention procedures to be applied in order to restore patient's esthetics and function.


Resumo A rede tridimensional formada pelos osteócitos controla o designósseo ao coordenar a atividade das células nas superfícies trabeculares e corticais, especialmente os osteoblastos e os clastos. Miniplacas e mini-implantes servem de ancoragem para que os demais componentes ortodônticos e ortopédicos possam - mesmo que à distância - deformar e estimular a rede de osteócitos a comandar uma remodelação no design de acordo com a "demanda funcional" criada pela forças aplicadas e seus vetores. Na transmissão próxima ou longínqua de forças, com base na ancoragem oferecida pela miniplacas, pode-se mudar a posição, o formato, tamanho e relação entre os ossos maxilares. Compreender a biologia óssea e a remodelação constante do esqueleto permite atuar com segurança e precisão nesse tipo de planejamento reabilitador dos pacientes, aumentando as possibilidades e tipos de intervenção para devolver a estética e função a eles.


Subject(s)
Humans , Bone Remodeling , Osteoblasts , Osteocytes , Bone and Bones , Dental Implants , Orthodontic Appliance Design , Orthodontic Anchorage Procedures
16.
Dent. press implantol ; 9(3): 15-37, July-Sept.2015. ilus
Article in Portuguese | LILACS | ID: lil-796648

ABSTRACT

Os ossos renovam-se constantemente e o turnover permite uma grande capacidade de adaptação a novas demandas físicas e metabólicas. A renovação óssea é completa em 4 a 5 anos no esqueleto do adulto jovem, comportando-se no dia a dia como o poeta disse "... prefiro ser uma metamorfose ambulante!". No simples movimento ortodôntico, na colocação de um implante osseointegrável, na aplicação do aparelho ortopédico, no movimento dentário com ganho de osso ou mudança de forma pela ancoragem em mini-implantes, e quer seja na transmissão longínqua de forças com base na ancoragem oferecida pela miniplacas, os osteócitos estão implicados, com sua rede tridimensional, no controle do design ósseo, por coordenarem a atividade de seus comandados nas superfícies trabeculares e corticais: os osteoblastos e os clastos. Compreender a biologia óssea e a remodelação constante do esqueleto permite atuar com segurança e precisão nos planejamentos reabilitadores dos pacientes e aumenta, também, as possibilidades de tipos de intervenção para devolver a estética e função a eles...


Bones are under continuous remodeling, and turover allows them to greatly adapt to new physical and metabolic demands. Bone remodeling ceases within 4 to 5 years in a young adult skeleton, and behaves as mentioned by the poet: “an ongoing metamorphosis.”Whether in orthodontic movement, osseointegrated implant placement, orthopedic appliance placement, tooth movement with bone gain or format changes caused by anchorage and mini-implants, or in the transmission of forces by means of miniplate-based anchorage, osteocytes are involved, by means of their tridimensional network, with bone design control, as they rule the activity of those which they command on trabecular and cortical bone surfaces: osteoblasts and clasts. Understanding bone biology and continuous remodeling of the skeleton allows us to perform safe and accurate rehabilitation treatment planning, thus increasing the number of intervention procedures to be applied in order to restore patient’s esthetics and function...


Subject(s)
Humans , Male , Female , Bone Remodeling , Dental Implants , Dental Prosthesis Design , /trends , Tooth Movement Techniques , Osteocytes , Orthodontic Anchorage Procedures , Osseointegration
17.
Dental press j. orthod. (Impr.) ; 20(2): 16-19, Mar-Apr/2015. graf
Article in English | LILACS | ID: lil-745862

ABSTRACT

Deciduous teeth exfoliate as a result of apoptosis induced by cementoblasts, a process that reveals the mineralized portion of the root while attracting clasts. Root resorption in deciduous teeth is slow due to lack of mediators necessary to speed it up; however, it accelerates and spreads in one single direction whenever a permanent tooth pericoronal follicle, rich in epithelial growth factor (EGF), or other bone resorption mediators come near. The latter are responsible for bone resorption during eruption, and deciduous teeth root resorption and exfoliation. Should deciduous teeth be subjected to orthodontic movement or anchorage, mediators local levels will increase. Thus, one should be fully aware that root resorption in deciduous teeth will speed up and exfoliation will early occur. Treatment planning involving deciduous teeth orthodontic movement and/or anchorage should consider: Are clinical benefits relevant enough as to be worth the risk of undergoing early inconvenient root resorption?.


O dente decíduo é esfoliado graças à apoptose em seus cementoblastos, que desnuda a parte mineralizada da raiz e atrai os clastos. A rizólise é lenta, pois faltam mediadores em quantidade para acelerar o processo, mas ela se acelera e unidireciona quando se aproxima um folículo pericoronário de dente permanente rico em EGF e outros mediadores da reabsorção óssea - os responsáveis pelas reabsorções óssea na erupção e dentária decídua na rizólise e esfoliação. Se houver movimentação ortodôntica ou ancoragem em dentes decíduos, aumenta-se, também, o nível local desses mesmos mediadores, devendo-se estar bem consciente de que haverá uma aceleração da rizólise e, em decorrência, uma antecipação de sua esfoliação. No planejamento de casos em que dentes decíduos estejam envolvidos na movimentação ortodôntica e/ou ancoragem, deve-se ponderar: o benefício clínico para o paciente será relevante, a ponto de valer o risco de uma rizólise abreviada e inconveniente?.


Subject(s)
Humans , Tooth, Deciduous/physiology , Tooth Movement Techniques/methods , Root Resorption/physiopathology , Tooth Eruption/physiology , Tooth Exfoliation/physiopathology , Bone Resorption/physiopathology , Chemotaxis/physiology , Apoptosis/physiology , Intercellular Signaling Peptides and Proteins/physiology , Dental Cementum/physiology , Dental Sac/cytology , Dental Sac/physiology , Epidermal Growth Factor/physiology , Epithelial Cells/physiology , Orthodontic Anchorage Procedures/methods , Odontoblasts/physiology
18.
CES odontol ; 27(1): 56-73, ene.-jun. 2014. ilus
Article in Spanish | LILACS | ID: lil-729446

ABSTRACT

Resumen Acelerar un tratamiento de Ortodoncia permite disminuir los riesgos naturales de desmineralización del esmalte, compromiso periodontal y reabsorción radicular, además de contribuir a tener pacientes mas satisfechos y profesionales con consultas mas eficientes. Varios métodos se han evaluado para mejorar la rata, magnitud y estabilidad del movimiento ortodóncico, entre ellos están, abordajes quirúrgicos, bioquímicos, farmacológicos y terapia con láser. Por otro lado, en el panorama mecánico, la evolución de los sistemas de brackets ha permitido que lleguen al mercado sistemas contemporáneos que garantizan mejores abordajes biológicos por lo menos desde el punto de vista de niveles de fuerza. La sumatoria de aproximaciones diagnósticas de alta calidad, mecanoterapias eficientes y complementos de orden físico y/o biológico y quirúrgico para acelerar los movimientos es lo que llamamos Ortodoncia de Tránsito Expreso (OTE)®, la cual es una alternativa importante para tratamientos de alta calidad y eficiencia. El propósito de esta revisión de literatura, es analizar las nuevas aproximaciones para acelerar el movimiento dentario desde el abordaje biológico, físico y quirúrgico, en sinergia con un complemento mecánico, ya sea con sistemas de Autoligado pasivo convencional o personalizado.


Accelerated Orthodontic treatment can reduce risks of enamel demineralization, root resorption and periodontal problems, and contribute to have more satisfied patients and professionals with more efficient practices. Several methods have been evaluated to improve the rate, magnitude and stability of orthodontic movement, which include surgical, biochemical, pharmacological and laser therapy approaches. Furthermore, in the mechanical scope, the evolution of brackets systems has allowed contemporary systems to reach the market which guarantee better biological approaches at least from the point of view of strength levels. The sum of high quality diagnostic approaches, efficient mechanics and physical and / or biological and surgical accessories in order to accelerate the movement is what we call Express Transit Orthodontics (OTE)®, which is an important alternative for high quality and efficient treatments. The purpose of this literature review is to analyze new approaches to accelerate tooth movement from the biological, physical and surgical approach, in synergy with a mechanical complement, either conventional or customized self-ligature systems.

19.
Ortho Sci., Orthod. sci. pract ; 6(24): 520-527, 2013. ilus
Article in Portuguese | LILACS, BBO | ID: lil-729330

ABSTRACT

O aumento do número de pacientes adultos buscando tratamento ortodôntico exigiu mudanças nos protocolos de tratamento. O desenvolvimento de novas modalidades terapêuticas, como os dispositivos de ancoragem absoluta, permite ao profissional resultados previsíveis nos casos de recuperação de espaço para reabilitação protética de dentes perdidos. A perda de um dente na região posterior prejudica a função mastigatória do lado envolvido. Além disso, essa ausência dentária propicia o movimento de sobre-erupção dos dentes antagonistas, agravando o desarranjo oclusal. O presente artigo apresenta um caso clínico onde foi realizada intrusão de primeiro e segundo molar superior direito, por meio de cadeia elástica apoiada em mini-implantes instalados por vestibular e por palatina, promovendo o nivelamento dentário desta região e permitindo a reabilitação protética dos dentes inferiores perdidos.


The increasing number of adult patients seeking for orthodontic treatment has demanded modifications in treatment protocols. The development of new therapeutic modalities, such as absolute anchorage devices, allows predictable results in cases of space recovery for prosthetic rehabilitation of missing teeth. The loss of a posterior tooth impairs masticatory function of the involved site. In addition the absence of a tooth propitiates over eruption of antagonist teeth, aggravating occlusal derangement. This article presents a case report of intrusion of maxillary first and second right molars using elastic chain supported by mini-implants placed vestibular and palatal, promoting dental leveling and allowing prosthetic rehabilitation of absent mandibular teeth.


Subject(s)
Humans , Female , Adult , Dental Implantation , Tooth Movement Techniques
20.
Dental press j. orthod. (Impr.) ; 17(4): 12-16, July-Aug. 2012. ilus
Article in English | LILACS | ID: lil-653492

ABSTRACT

Moving teeth orthodontically through the dense trabecular bone and cortical areas may require a reduction in the intensity and/or concentration of the applied forces. In part, the orthodontic applied forces are dissipated and reduced by bone deflection, which normally occurs by a slight degree of elasticity of bone tissue in normal conditions. In areas of dense trabecular and in cortical bone this deflection should be insignificant or nonexistent. If there is no reduction in the intensity of the forces in these mentioned regions, the entire force will focus on the structure of the periodontal ligament, increasing the risk of death of cementoblasts, hyalinization and root resorption. Further studies could assess the prevalence of these consequences in populations selected for this purpose, so that would no longer be randomly observed notes.


Movimentar ortodonticamente os dentes por áreas densas do trabeculado ósseo e pelas corticais pode requerer uma redução na intensidade e/ou na concentração das forças aplicadas. Em parte, as forças ortodônticas aplicadas são dissipadas e reduzidas pela deflexão óssea que ocorre pelo discreto grau de elasticidade do tecido ósseo em condições de normalidade. Nas áreas de trabeculado denso e nas corticais, essa deflexão deve ser irrisória ou inexistente. Se não houver uma redução na intensidade das forças nessas regiões citadas, toda a força incidirá sobre a estrutura do ligamento periodontal, aumentando o risco de morte dos cementoblastos, hialinização e reabsorções radiculares. Novos trabalhos poderiam avaliar a prevalência dessas consequências em casuísticas selecionadas para essa finalidade, que, assim, deixariam de ser observações aleatórias.

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