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1.
Rev. Asoc. Odontol. Argent ; 109(3): 171-176, dic. 2021. ilus, tab
Article in Spanish | LILACS | ID: biblio-1372366

ABSTRACT

Objetivo: Relacionar la prevalencia de maloclusiones funcionales con hábitos orales en niños con dentición mixta. Materiales y métodos: La muestra estuvo constituida por 61 pacientes que asistieron a la Facultad de Odontología de la UNNE entre los meses de abril y noviembre de 2018, seleccionados mediante un muestreo al Azar Sistemático. Se evaluó en ellos la presencia de maloclusiones funcionales como mordidas abiertas y cruzadas, líneas medias desviadas, apiñamiento dentario, resalte maxilar. Como hábitos orales se consideró la succión digital, interposición lingual y deglución atípica, interposición de labios y objetos, respiración bucal, onicofagia. Se realizó un análisis descriptivo empleando el software estadístico InfoStat Versión 2019 y para conocer la asociación entre las maloclusiones funcionales y los hábitos orales se emplearon pruebas de Chi cuadrado (nivel de signi- ficación de P ≤0,05). Resultados: Se observó la presencia de maloclusiones funcionales en un 64% de los niños, y se encontró que el api- ñamiento dentario fue el predominante con un 39%. La pre- valencia de hábitos orales fue de 66%, la interposición labial y de objetos fue la que se detectó con mayor frecuencia con un 39%. Se observó mayor presencia de mordida abierta en pacientes con hábitos parafuncionales como ser succión digi- tal e interposición lingual. La asociación entre maloclusiones funcionales y hábitos orales fue estadísticamente significativa (χ 2 = 6,17, P = 0.0130). Conclusión: Se identificó una alta prevalencia de malo- clusiones funcionales en niños con dentición mixta, asociadas a hábitos orales (AU)


Aim: To determine the association between prevalence of functional malocclusions and oral habits in children with mixed dentition. Materials and methods: The sample consisted of 61 patients who attended the UNNE School of Dentistry from April to November 2018, selected through systematic random sampling. Presence of functional malocclusions such as open bite, crossbite, deviated midlines, dental crowding, and maxil- lary protrusion were evaluated. The oral habits of finger suck- ing, lingual interposition and atypical swallowing, interposi- tion of lips and objects, mouth breathing, and onychophagia were considered. A descriptive analysis was performed using the Statistical Software InfoStat Version 2019. Chi-square tests were used to determine the association between function- al malocclusions and oral habits (significance level P ≤0.05). Results: Functional malocclusions were present in 64% of the children, with dental crowding being the most prevalent, in 39%. Prevalence of oral habits was found in 66%, with la- bial and object interposition having the highest frequency, in 39%. Open bite was more frequent in patients with parafunc- tional habits such as finger sucking and lingual interposition. The association between functional malocclusions and oral habits was statistically significant (χ2 = 6.17, P = 0.0130). Conclusion: High prevalence of functional malocclu- sions was identified in children with mixed dentition, associ- ated with oral habits (AU)


Subject(s)
Humans , Male , Female , Child , Dentition, Mixed , Habits , Malocclusion , Argentina , Schools, Dental , Cross-Sectional Studies , Statistical Analysis , Open Bite , Fingersucking , Observational Study , Mouth Breathing , Nail Biting
2.
Prensa méd. argent ; 107(8): 423-429, 20210000. ilus
Article in English | LILACS | ID: biblio-1358770

ABSTRACT

El propósito del estudio fue analizar la dinámica de los cambios relacionados con la edad de las estructuras craneofaciales de acuerdo con los parámetros antropométricos en hombres y mujeres de 17 a 24 años, y determinar la correlación, definida por análisis antropométrico, entre las formas de morfología craneofacial y los tipos de anomalías dento-maxilares. Materiales y métodos: Se realizó un examen antropométrico de 851 individuos (418 hombres y 433 mujeres) de 17 a 24 años y la evaluación de 45 mediciones entre puntos de referencia de tejidos blandos. Además, se realizó una valoración odontológica general, que incluyó la clasificación de las anomalías dentomaxilares. Resultados: Se detectó que el ancho de la cabeza, el largo de la cabeza, así como el ancho de la mandíbula y el ancho morfológico facial en las hembras alcanzan valores máximos de crecimiento a la edad de 20 años. Además, se obtuvieron datos que indicaron la continuación del crecimiento de los parámetros antropométricos craneofaciales mencionados anteriormente en los hombres durante el período de transición de la adolescencia a la edad adulta. Conclusión: la mordida profunda distal es la anomalía dento-maxilar (DMAn) más común en hombres y mujeres bielorrusos de 17 a 24 años. Junto con esto, la frecuencia de ocurrencia de maloclusión de mordida profunda distal en individuos con morfología craneofacial dolicocefálica es mayor en hombres y mujeres en comparación con otras formas de morfología craneofacial. La mordida profunda distal se acompaña de la disminución de los parámetros antropométricos de la altura facial, en comparación con la mordida mesial y abierta en la que hay un aumento estadístico. Además, se observa una disminución estadística en el valor de la profundidad facial inferior en individuos diagnosticados con mordida distal, en comparación con individuos con mordida mesial y normal. Estos resultados obtenidos del análisis antropométrico podrían ser útiles en el diagnóstico de anomalías dentofaciales y dento-maxilares, y en la simulación de resultados de tratamiento estéticamente estables.


The purpose of the study was to analyze the dynamics of age-related changes of craniofacial structures according to anthropometric parameters in males and females aged 17­24 years, and to determine the correlation, defined by anthropometric analysis, between forms of craniofacial morphology and the type of dento-maxillary anomalies. Materials and Methods: An anthropometric examination of 851 individuals (418 males and 433 females) aged 17­24 years and the evaluation of 45 measurements between soft tissue landmarks was performed. In addition, general dental assessment was conducted, which included the classification of the dento-maxillary anomalies. Results: It was detected that the head width, head length, as well as the mandible width, and the morphological facial width in females reach growth peak values at the age of 20 years. Furthermore, data was obtained which indicated growth continuation of the stated above craniofacial anthropometric parameters in males during the transitional period from adolescence to adulthood. Conclusion: Distal deep bite is the most commonly prevailed dento-maxillary anomalies (DMAn) in Belarusian men and women aged 17­24 years. Along with this, the frequency of distal deep bite malocclusion occurrence in individuals with dolichocephalic craniofacial morphology is higher in men and women when compared to other forms of craniofacial morphology. Distal deep bite is accompanied by the decrease of facial height anthropometric parameters, when compared to mesial and open bite in which there is a statistical increase. Moreover, a statistical decrease in the value of the inferior facial depth is observed in individuals diagnosed with distal bite, when compared to individuals with mesial and normal bite. These obtained results from anthropometric analysis could be useful in diagnosis of dentofacial and dento-maxillary anomalies, and in the simulation of aesthetically stable treatment results


Subject(s)
Humans , Adolescent , Adult , Body Weights and Measures , Anthropometry , Cephalometry , Maxillofacial Abnormalities , Open Bite/physiopathology , Head/growth & development , Age Factors
3.
Braz. dent. j ; 32(3): 116-126, May-June 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1345509

ABSTRACT

Abstract This 2-year-follow up study compared and evaluated the stability of early anterior open bite (AOB) treatment based on different appliances. Children from 7 to 10 years with Angle Class I, AOB larger than 1.0 mm and fully erupted maxillary and mandibular permanent central incisors were eligible. The initial sample was 99 patients distributed, by simple randomization, into four groups: BS (bonded spurs), CC (chincup), FPC (fixed palatal crib) and RPC (removable palatal crib). Cephalometric analysis was performed at baseline (T1), final (T2) and 2-year post-treatment (T3) by taking the overbite measurements as the main outcome. Blinding was possible to cephalometric analysis. At T3, with dropouts, there were 63 individuals, being BS (n=15; overbite 0.19 mm; 11.54 years; 10 female (F)/5 male (M)); CC (n=11; overbite -0.19 mm; 11.41 years; 8 F/3 M); FPC (n=21; overbite 1.23 mm; 11.44 years; 15 F/6 M) and; RPC (n=16; overbite 0.73 mm; 11.67 years; 6 F/10 M). Changes in dentoskeletal variables and breaking deleterious oral habits during the follow up were statically analyzed with p<.05. Mandibular skeletal linear measurements and vertical dental components have gradually increased with age, manly at pubertal growth spurt and at the establishment of permanent dentition after treatment. Incisor teeth extrusion had impact on AOB correction and stability in 4 groups, which recorded a 1.15 mm-improvement of overbite after treatment (T3-T2). The experimental appliances were effective with stable results, being FPC the device recorded the highest AOB correction and the lowest patient withdrawal rate.


Resumo Os objetivos do presente estudo foram comparar e avaliar a estabilidade do tratamento precoce da mordida aberta anterior (MAA) com diferentes dispositivos. A amostra inicial foi composta por 99 pacientes randomizados em quatro grupos experimentais: BS - esporões colados; CC - mentoneira; FPC - grade palatina fixa; RPC - grade palatina removível. Análise cefalométrica foi realizada para avaliar os dados do período inicial (T1), final do tratamento (T2) e 2 anos após tratamento (T3), sendo a variável overbite o desfecho principal. Em T3, após perdas de seguimento, haviam 63 indivíduos, sendo BS (n=15; overbite 0.19 mm; 11.54 anos; 10 Feminino (F)/5 Masculino (M)); CC (n=11; overbite -0.19 mm; 11.41 anos; 8 F/3 M); FPC (n=21; overbite 1.23 mm; 11.44 anos; 15 F/6 M) e; RPC (n=16; overbite 0.73 mm; 11.67 anos; 6 F/10 M). Comparações das alterações nas variáveis dentoesqueléticas e abandono de hábitos bucais deletérios durante o tempo de acompanhamento foram estatisticamente analisados com p<.05. Medidas esqueléticas lineares mandibulares e componentes verticais aumentaram gradualmente com a idade, principalmente com o surto de crescimento puberal e estabelecimento da dentição permanente no pós-tratamento. O overbite foi significantemente melhorado durante o tratamento, permanecendo estável com alterações positivas. A extrusão dos incisivos impactou na correção da MAA e estabilidade nos 4 grupos, que registraram uma melhora de 1.15 mm no pós-tratamento (T3-T2). Com suas limitações, todos dispositivos experimentais foram efetivos e mostraram resultados estáveis no tratamento precoce da MAA, sendo que a FPC apresentou a maior correção da MAA e o menor índice de desistência.


Subject(s)
Humans , Male , Female , Child , Open Bite/therapy , Malocclusion, Angle Class II , Cephalometry , Follow-Up Studies , Mandible
4.
Rev. Asoc. Odontol. Argent ; 109(1): 34-40, ene.-abr. 2021. ilus, tab
Article in Spanish | LILACS | ID: biblio-1281050

ABSTRACT

Objetivo: Describir las características bucales prevalentes de pacientes argentinos con mucopolisacaridosis (MPS) atendidos en el Servicio de Odontología del Hospital Nacional "Prof. Alejandro Posadas". Materiales y métodos: Se consideraron las historias clínicas de 19 pacientes con diagnóstico de MPS. Se registraron la edad, el sexo, el lugar de residencia, el tipo de MPS y la presencia de retraso madurativo. La muestra estuvo constituida por 13 niños (6,7±3 años) y 6 adultos (26±9 años): 2 eran mujeres (1 con MPS tipo I; 1 con MPS tipo IV A) y 17 eran hombres (15 con MPS tipo 2; 1 con MPS tipo 1; 1 con MPS tipo III); 13 de los pacientes presentaban discapacidad intelectual. Se evaluaron: tipo de dentición, oclusión, macroglosia, hipoplasias del esmalte, tipo de respiración predominante, clase molar y tratamiento realizado. Resultados: Ambos casos con MPS I presentaban mordida abierta anterior y giroversión dental, y solo uno de estos, diastemas, microdoncia, hipoplasias del esmalte, macroglosia y respiración bucal. De los 15 pacientes con MPS II, 11 presentaban mordida abierta anterior (73%), 3 mordida cruzada posterior (20%), 5 giroversión dental (33%), 11 diastemas (73%), 3 retraso en la erupción (20%), 4 hiperplasia gingival (26%), 13 macroglosia (87%), 7 hipoplasias del esmalte (47%), 2 microdoncia (13%), 9 respiración bucal (60%). Se registraron 5 pacientes con clase molar I (33%), 3 con clase molar II (20%), 3 con clase molar III (20%) y en 3 casos no se pudo evaluar (20%). En el paciente con MPS tipo III se halló mordida abierta anterior, diastemas, retraso en la erupción, macroglosia, respiración bucal y clase molar II; y en el caso de MPS tipo IV A, mordida abierta anterior, diastemas, hiperplasia gingival, macroglosia y clase molar II. El 90% de los pacientes requirió tratamiento odontológico (AU)


Aim: To identify the most prevalent oral manifestations of 19 Argentine patients with mucopolysaccharidos (MPS) attending the Dentistry Service of the National Posadas Hospital. Materials and methods: The medical records of 19 patients diagnosed with MPS were considered. Age, sex, place of residence, type of MPS, and presence of maturational delay were recorded. The sample consisted of 13 children (6.7 ± 3 years) and 6 adults (26 ± 9 years): 2 were women (1 with MPS type I; 1 with MPS type IV A) and 17 were men (15 with MPS type 2; 1 with MPS type 1; 1 with MPS type III); 13 of the patients had intellectual disabilities. The following were evaluated: type of dentition, occlusion, macroglossia, enamel hypoplasia, predominant type of respiration, molar class and treatment performed Results: Both cases with MPS I presented anterior open bite and dental gyroversion, and only one of these, diastemas, microdontia, enamel hypoplasia, macroglossia and mouth respiration. Of the 15 patients with MPS II, 11 presented anterior open bite (73%), 3 posterior crossbite (20%), 5 dental gyroversion (33%), 11 diastemas (73%), 3 delayed eruption (20%), 4 gingival hyperplasia (26%), 13 macroglossia (87%), 7 enamel hypoplasia (47%), 2 microdontia (13%), 9 mouth breathing (60%). 5 patients with molar class I (33%), 3 with molar class II (20%), 3 with molar class III (20%) and in 3 cases it could not be evaluated (20%). In the patient with type III MPS, anterior open bite, diastemas, delayed eruption, macroglossia, mouth breathing and molar class II were found; and in the case of type IV A MPS, anterior open bite, diastemas, gingival hyperplasia, macroglossia and molar class II. 90% of the patients required dental treatment. Conclusion: The most observed oral manifestations were macroglossia (84.2%) and anterior open bite (73%) (AU)


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Oral Manifestations , Mucopolysaccharidosis II/pathology , Mucopolysaccharidosis I/pathology , Mucopolysaccharidosis III/pathology , Argentina , Epidemiology, Descriptive , Cross-Sectional Studies , Statistical Analysis , Open Bite/epidemiology , Dental Service, Hospital/statistics & numerical data , Age and Sex Distribution , Macroglossia/epidemiology , Malocclusion/epidemiology
5.
Rev. odontol. UNESP (Online) ; 50: e20210034, 2021. tab
Article in English | LILACS, BBO | ID: biblio-1347769

ABSTRACT

Introduction: Open bite can generate relevant psychosocial impact in the daily life of the patient, both from the aesthetic and functional point of view. Objective The aim of this study was to estimate the prevalence and factors associated with the anterior open bite in children in the first school year in a municipality in southern Brazil. Material and method A cross-sectional study was carried out with six-year-old schoolchildren in Palhoça/SC. Interviews were conducted with mothers to gather socioeconomic and non-nutritive sucking habits information. Children oral clinical examinations were carried out in schools. Multivariate analyses were performed using Poisson regression with a robust estimator. The study involved 655 children, 50.5% being female. Result The prevalence of anterior open bite was 14.1% (95% CI 11.5; 16.7). Girls exhibited a lower prevalence [PR= 0.96 (95% CI 0.94; 0.99) p= 0.024] and those children who used a pacifier exhibited a higher prevalence of anterior open bite [PR= 1.04 (95% CI 1.01; 1.07) p= 0.003]. Conclusion The prevalence was 14.1% and that it was associated with gender and the use of pacifier, in a statistically significant and independent way.


Introdução: A mordida aberta pode gerar relevante impacto psicossocial no cotidiano do paciente, tanto do ponto de vista estético quanto funcional. Objetivo Estimar a prevalência e os fatores associados à mordida aberta anterior em crianças do primeiro ano escolar de um município do sul do Brasil. Material e método Estudo transversal constituído por escolares de seis anos de idade de Palhoça/SC. Foram realizadas entrevistas com as mães para obtenção de informações socioeconômicas e de hábitos de sucção não nutritivos. Exames clínicos bucais das crianças foram realizados nas escolas. Análises multivariadas foram realizadas por meio de regressão de Poisson com estimador robusto. Resultado O estudo envolveu 655 crianças sendo 50,5% do sexo feminino. A prevalência de mordida aberta anterior foi de 14,1% (IC 95% 11,5; 16,7). Meninas apresentaram prevalência menor [RP= 0,96 (IC 95% 0,94; 0,99) p= 0,024] e aqueles que utilizaram chupeta apresentaram uma maior prevalência [RP= 1,04 (IC 95% 1,01; 1,07) p= 0,003]. Conclusão A prevalência foi de 14,1% associada de forma estatisticamente significativa e independente com sexo e utilização de chupeta.


Subject(s)
Humans , Child , Child , Open Bite , Dental Occlusion , Pacifiers
6.
Rev. Soc. Odontol. La Plata ; 31(61): 23-29, 2021. ilus, tab
Article in Spanish | LILACS | ID: biblio-1354026

ABSTRACT

El reporte de este caso tiene como objetivo demostrar la utilidad de los anclajes esqueléticos temporarios como son las miniplacas cigomáticas y los microimplantes "buccal shelf" en el tratamiento ortodóncico, en una paciente de 17 años 10 meses de edad, clase II vertical, dólicofacial, con mordida abierta anterior y aumento de la altura facial inferior. Después de la primera fase de tratamiento, siguiendo la secuencia de arcos para completar la alineación, se utilizaron anclajes esqueléticos extrarradiculares con una mecánica de intrusión con fuerzas elásticas durante 10 meses. Se intruyeron sus piezas posteriores superiores e inferiores y se distalizó la arcada superior, corrigiéndose la oclusión. El mentón retrognático y su perfil convexo mejoraron con la autorrotación de la mandíbula (AU)


The objective of this report case is to demonstrate the usefulness of temporary skeletal anchors such as zygomatic miniplates and buccal shelf microimplants in orthodontic treatment, in a 17-year-old 10-month-old, vertical class II, dollicofacial patient with anterior open bite and increased lower facial height. After the first treatment phase, following the arch sequence to complete the alignment, extra-radicular skeletal anchors were used with intrusion mechanics with elastic forces for 10 months. Its upper and lower posterior pieces were intruded and the upper arch was distalized, correcting the occlusion. e retrognathic chin and its convex profile improved with autorotation of the jaw (AU)


Subject(s)
Humans , Male , Adolescent , Open Bite , Orthodontic Anchorage Procedures , Malocclusion, Angle Class II/therapy , Titanium , Tooth Movement Techniques , Biomechanical Phenomena , Dental Implants , Biotypology
7.
Braz. oral res. (Online) ; 35: e081, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1278597

ABSTRACT

Abstract The object of this study was to compare the clinical complications of 4 different appliances used in the early treatment of anterior open bite (AOB), and to test the null hypothesis that there is no difference in the number of complications among the appliances. Records from 99 Class I malocclusion patients with AOB treated using bonded spurs, BS, n = 25; chin cup, CC, n = 25; fixed palatal crib, FPC, n = 25; and removable palatal crib, RPC, n = 24) were examined. The total number and frequency of clinical complications that occurred over 12 months were described and compared by using chi-square and Kruskal-Wallis tests (Dunn's post-test) (α = 5%, CI = 95%). The incidence of clinical complications was 66.7%, comprising: breakage, bond failure, maladjustment, allergy, soft-tissue lesion, loss of removable appliance and abandonment. Eighteen patients gave up treatment; this occurred more frequently in the groups with removable appliances. Regarding the total number of complications per patient, Group BS exhibited a significantly higher number than the other groups (p < 0.0001). A low frequency of complications (1 to 3) was found in the groups, except for Group BS, in which 8% of the patients presented moderate frequency (4 to 6). In terms of appliance types (fixed or removable), there was no difference in the incidence of complications (p > 0.094). The null hypothesis was rejected, since the BS group exhibited the highest total number and frequency of complications. There was no difference between fixed and removable appliances in terms of incidence of clinical complications, although more patients using removable appliances abandoned their treatment.


Subject(s)
Humans , Orthodontic Appliances, Removable , Open Bite/etiology , Open Bite/therapy , Open Bite/epidemiology , Palate
8.
Arq. odontol ; 57: 244-252, jan.-dez. 2021. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-1348380

ABSTRACT

Objetivo: Analisar na literatura quais são os hábitos associados à mordida aberta anterior em crianças. Métodos: Realizou-se uma pesquisa bibliográfica referente aos artigos publicados de 2015 a 2020 nos bancos de dados on-line PubMed, Embase, SciELO, LILACS e BBO utilizando descritores e sinônimos MeSH, DeCS e Emtree com as seguintes etapas: identificação, triagem, elegibilidade e inclusão. Foram incluídos estudos observacionais, transversais ou de coorte, e artigos que demonstrassem hábitos associados à mordida aberta anterior em crianças de 2 a 12 anos de idade. Relatos de caso, revisões da literatura e outros tipos de estudos que não estavam de acordo com os critérios foram excluídos. Os artigos foram analisados por dois pesquisadores independentes e os estudos selecionados foram avaliados quanto à qualidade metodológica. Resultados: De um total de 462 artigos encontrados apenas 9 foram selecionados para o estudo. Desses, 8 (88,9%) apresentaram alta ou moderada qualidade metodológica, sendo apenas 1 (11,1%), dentre os artigos, de baixa qualidade. Mediante à análise dos estudos inclusos, observou-se que a manutenção de hábitos orais como sucção digital (66,6% dos artigos) e de chupeta (77,7%), bem como uso de mamadeira (33,3%) e duração do tempo de aleitamento materno (22,2%) pode ocasionar alterações na oclusão, fala, respiração, crescimento craniofacial, afetando diretamente a qualidade de vida da criança. Conclusão:Uma vez que a infância é a fase adequada para a implementação de novos hábitos saudáveis e tratamentos, é imprescindível que o cirurgião-dentista conheça essa associação, e adote medidas terapêuticas e preventivas.


Aim: To perform an analysis of in the literature regarding which habits are associated with anterior open bite in children. Methods:This was a bibliographic study conducted using articles published from 2015 to 2020 in the PubMed, Embase, SciELO, LILACS, and BBO online databases, using MeSH, DeCS, and Emtree descriptors and synonyms with the following steps: identification, screening, eligibility, and inclusion. Observational, cross-sectional, or cohort studies, as well as and articles demonstrating habits associated with anterior open bite in children aged 2 to 12 years, were included. Case reports, literature reviews, and other types of studies that were not in accordance with the criteria were excluded. The articles were evaluated by two independent researchers, and the selected studies were evaluated for methodological quality. Results:Of a total of 462 articles found, only nine were selected for the study. Of these, eight (88.9%) presented high or moderate methodological quality, with only 1 (11.1%) of the articles presenting a low quality. Through the analysis of the included studies, it was observed that the maintenance of oral habits, such as finger sucking (66.6% of the articles) and pacifiers (77.7%), as well as the use of a bottle (33.3%) and the duration of breastfeeding time (22.2%), may cause changes in occlusion, speech, breathing, and craniofacial growth, directly affecting the child's quality of life. Conclusion: Since childhood is the appropriate phase for the implementation of new healthy habits and treatments, it is essential for the dentist to understand this association and adopt therapeutic and preventive measures.


Subject(s)
Humans , Child, Preschool , Child , Sucking Behavior , Open Bite/etiology , Pacifiers/adverse effects , Nursing Bottles , Fingersucking , Risk Factors , Dental Care for Children
9.
Dental press j. orthod. (Impr.) ; 26(5): e21ins5, 2021. graf
Article in English | LILACS, BBO | 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
10.
Article in English | LILACS, BBO | ID: biblio-1250452

ABSTRACT

ABSTRACT Objective: To determine the prevalence of malocclusion and associated factors in children and the level of knowledge of mothers participating in the child care group of a basic health unit. Material and Methods: This is a cross-sectional study conducted in children between 18 and 72 months of a childcare group in Pelotas. Children whose parents or legal guardians signed the informed consent term participated in the study. Data were collected through a questionnaire previously tested and applied to the mothers, and a clinical examination of children's occlusion were performed by examiners after training and calibration. Statistical analysis was descriptive and analytic. In the bivariate analyses, it was used the Pearson, Fisher or Linear Trend Qui-Square tests and, in the multivariate analysis, the Poisson regression. Prevalence ratios and 95% confidence intervals were obtained, and a p-value <0.05 was used. Results: Forty-seven children were included and 41.3% presented malocclusion. The prevalence of malocclusion was associated with a higher number of children in the family (p<0.005) and breastfeeding for more than 12 months (p<0.05). The highest prevalence of open bite was associated with the use of a pacifier and working mothers (p<0.05). Conclusion: Most mothers reported having knowledge about the time and use of pacifiers in childhood. In this group, the prevalence of malocclusion in children was high and associated with behavioral and social factors.


Subject(s)
Humans , Male , Female , Infant , Child, Preschool , Child , Tooth, Deciduous , Child Care , Health Knowledge, Attitudes, Practice , Pacifiers , Malocclusion , Mothers , Health Centers , Cross-Sectional Studies , Multivariate Analysis , Surveys and Questionnaires , Open Bite
11.
Rev. odontopediatr. latinoam ; 11(1): 219150, 2021. ilus, tab
Article in Spanish | LILACS, COLNAL | ID: biblio-1147636

ABSTRACT

Objetivos: La presente investigación tuvo como objetivo establecer la correlación entre la presencia de maloclusiones a nivel vertical con el índice del paladar y con la altura palatina. Materiales y Métodos: Estudio de tipo transversal. La población de estudio fue conformada por 134 modelos de yeso con dentición mixta, 81 mujeres y 53 hombres, seleccionados por conveniencia y obtenidos desde el 2014 hasta el 2018 del área de clínica de odontopediatría y ortodoncia en la Escuela Nacional de Estudios Superiores Unidad León. La muestra de estudio fue dividida en 3 categorías según la oclusión; mordida abierta (37), mordida profunda (32) y normoclusión (65). Se realizaron mediciones del ancho intermolar y altura del paladar con el uso de un calibrador digital, posteriormente se obtuvo el índice del paladar y se correlacionó con los parámetros expuestos por Korkhaus mediante la prueba estadística de Spearman. Resultados: La prueba estadística de Spearman refleja que no hay correlación entre la magnitud de los valores del índice del paladar propuestos por Korkhaus con la presencia de maloclusiones a nivel vertical. De igual manera las pruebas estadísticas indican que no existe correlación notable entre la altura del paladar y la oclusión en relación vertical. Conclusiones: El resultado obtenido al usar el índice del paladar no fue capaz de corresponder a los parámetros propuestos por Korkhaus como normales, posiblemente al ser usado durante la etapa de la dentición mixta pues durante este periodo suceden cambios constantes relacionados al crecimiento.


Objetivos: Os objetivos a presente investigação buscou valor uma correlação entre a presença de más oclusões em nível vertical com o índice do palato e com a altura palatina. Materiais e Métodos: Estudo do tipo transversal. A população do estudo foi composta por 134 modelos de gesso com dentição mista, 81 mulheres e 53 homens, selecionados por conveniência e obtidos de 2014 a 2018 na área de Odontopediatria e Ortodontia na Escola Nacional de Ensino Superior Unidade de León. A amostra do estudo foi dividida em 3 categorias de acordo com a oclusão; mordida aberta (37), mordida profunda (32) e normoclusão (65). A medida da largura intermolar e da altura do palato foi feita com o uso de um paquímetro digital, o índice de palato foi posteriormente obtido e relacionado aos parâmetros expostos por Korkhaus por meio do teste estatístico de Spearman. Resultados: O teste estatístico de Spearman mostra que não há correlação entre a magnitude dos valores do índice de palato proposta por Korkhaus e a presença de más oclusões verticais. Da mesma forma, os testes estatísticos indicam que não há correlação notável entre a altura do palato e a oclusão na relação vertical. Conclusões: O resultado obtido com o uso do índice de palato não foi capaz de corresponder aos parâmetros propostos por Korkhaus como normais, possivelmente quando usado durante o estágio de dentição mista, porque durante este período há mudanças constantes relacionadas ao crescimento


Purpose: The aim of the present study is to assess the relation between vertical malocclusions with palatal index and palatal height. Materials and Methods: Transversal study. The sample consisted in 134 stone models within mixed dentition, 81 females and 53 males, they were convenience selected and obtained from the pediatric and orthodontic dentistry medical center at the National School for Superior Studies Unit León since 2014 to 2018. The stone models were divided into three categories according to their kind of occlusion: open bite (37), deep bite (32) and normal bite (65). Palatal width and height were measure by using a digital caliper. Subsequently the palatal index was obtained and it was related with the parameters exposed by Korkhaus using the Spearman statistical test. Results: The Spearman statistical test indicated there is no a clearly relationship between palatal index values exposed by Korkhaus with the presence of vertical malocclusions and in the same way there is no a relationship between palatal height and vertical malocclusions.Conclusions: The result obtained by using the palatal index was no able to indicate an agreement with Korkhaus parameters. Probably this disagreement was due to the constant changes that occur during the period of the mixed dentition.


Subject(s)
Humans , Male , Female , Open Bite , Dentition, Mixed , Measurements, Methods and Theories , Dentition , Malocclusion
12.
Braz. dent. sci ; 24(2): 1-11, 2021. ilus
Article in English | LILACS, BBO | ID: biblio-1178387

ABSTRACT

The present case report describes a conservative and uncommon treatment for class III malocclusion in a woman growing patient with aged eight years and four months. An unconventional treatment modality was used for the treatment of this malocclusion, reverse-pull headgear and distalisation of lower teeth using mandibular cervical headgear in the lower arch. At the end of the treatment (after 33 months), there was correction of the transversal and sagittal occlusal relationship between maxilla and mandible and correct dental intercuspation (AU)


O presente relato de caso descreve um tratamento conservador e incomum para má oclusão de classe III em uma paciente em crescimento com idade de oito anos e quatro meses. Uma modalidade de tratamento não convencional foi utilizada que consistiu no uso de tração reversa maxilar e aparelho extra-bucal inferior para distalização. Ao final do tratamento (após 33 meses), houve correção da relação oclusal sagital e transversal entre maxila e mandíbula e correta intercuspidação dentária (AU)


Subject(s)
Humans , Female , Child , Orthodontics , Open Bite , Malocclusion, Angle Class III
13.
Rev. ADM ; 77(5): 261-266, sept.-oct. 2020. ilus
Article in Spanish | LILACS | ID: biblio-1147137

ABSTRACT

Una de las consecuencias de la desprogramación neuromuscular es la rotación mandibular en sentido horario, evidenciando el punto prematuro de contacto y aumentando la dimensión vertical del paciente. En pacientes clase II con componente vertical, es un problema realizar este tipo de tratamiento, ya que por lo general este efecto de posterorrotación mandibular hace el perfil más convexo, y en algunos casos genera mordida abierta anterior, la cual se debe corregir posteriormente con el tratamiento de ortodoncia, cirugía o prótesis, lo que alarga el tiempo total de tratamiento por la necesidad de control vertical. El presente caso se trata de una mujer de 45 años de edad, dolicofacial, con tendencia a mordida abierta, mordida dual, sobremordida vertical y horizontal disminuidas, motivo de consulta dolor articular, el cual no le permite continuar con sus labores diarias, el tratamiento realizado fue desprogramación neuromuscular con un guarda oclusal inferior con el propósito de aliviar sintomatología articular y control vertical con microtornillos palatinos previo a tratamiento ortodóncico (AU)


One of the effects of the neuromuscular deprogramming treatment is the mandibular clockwise rotation, making the light premature occlusal contact more evident and increasing the patient vertical dimension. In Class II patients with vertical component is difficult to treat them due to profile worsening as an effect of the clockwise rotation creating in some patient's anterior open bite, this has to be corrected later in treatment with orthodontic intrusion, surgery or prosthodontic treatment, increasing the total time of treatment with the vertical control necessity. This case report is a 45 years old patient, dolichofacial, with anterior open bite tendency, dual bite, decreased overjet and overbite, her chief complaint was temporomandibular joint dysfunction which dont allow her to do her daily duties, the treatment for her was neuromuscular deprogramming splint for the temporomandibular joint pain, and vertical control with temporary anchorage devices (miniscrews) before the orthodontic treatment (AU)


Subject(s)
Humans , Middle Aged , Vertical Dimension , Temporomandibular Joint Dysfunction Syndrome/therapy , Dental Implants , Open Bite/therapy , Rotation , Occlusal Splints , Neuromuscular Manifestations , Overbite/therapy , Mandible/physiology , Mexico
14.
Rev. Cient. CRO-RJ (Online) ; 5(1): 49-57, Jan.-Apr. 2020.
Article in English | LILACS, BBO | ID: biblio-1130175

ABSTRACT

Currently, there is a tendency to treat open bite with mini-implants, miniplates, and orthognathic surgeries and build ups when these protocols are not always indicated and to be apply them unnecessarily and excessively. Objectives: This case report describes treatment of a severe anterior open bite in an adult patient with step bends and vertical elastics. Case report: The female patient was 29 years and 8 months old and reported that she had low self-esteem; therefore, she wanted to have her untreated open bite closed. By examination, a convex profile, vertical growth pattern, dental midline deviation, and tongue exposure could be seen upon smiling. The dental and skeletal sagittal relationship was Class II. The overjet was +5 mm and the anterior overbite was -5.5 mm. The severe skeletal open bite involved the first molars to the anterior teeth, and it was treated only with step bends and vertical elastics over 2 years. Results: Significant facial improvement, maxillary incisor exposure upon aesthetic smiling, and adequate overbite and overjet were observed. The upper and lower dental midlines fit to the sagittal line. A counterclockwise rotation of the mandible was observed. The severe skeletal open bite was treated. Conclusions: Severe skeletal open bite malocclusion treated with step bends and vertical elastics in adult patient demonstrated efficient, predictable and stable open bite correction.


Introdução: Atualmente, existe uma tendência de tratar a mordida aberta com mini-implantes, miniplacas, cirurgias ortognáticas e levantes de mordida, quando estes protocolos nem sempre são indicados e a sua aplicação pode ser desnecessária e excessiva. Objetivo: Este relato de caso descreve o tratamento de uma mordida aberta anterior grave em paciente adulto com "step bends" e elásticos verticais. Relato do caso: A paciente tinha 29 anos e 8 meses de idade e relatou ter baixa autoestima; portanto ela queria fechar sua mordida aberta não tratada. Ao exame, um perfil convexo, padrão de crescimento vertical, desvio da linha média dental e exposição da língua podiam ser vistos ao sorrir. A relação sagital dental e esquelética era de Classe II. O overjet de +5 mm e o overbite anterior de -5,5 mm. A mordida aberta esquelética grave envolveu os primeiros molares até os dentes anteriores e foi tratada apenas com "step bends" e elásticos verticais por pouco mais de 2 anos. Resultados: Melhoria facial significativa, exposição dos incisivos superiores ao sorriso estético, sobremordida e overjet adequados foram observadas. As linhas médias dentárias superior e inferior adequadas à linha sagital. Foi observada rotação da mandíbula no sentido antihorário. A mordida aberta esquelética grave foi tratada. Conclusão: A má oclusão grave da mordida aberta esquelética tratada com "step bends" e elásticos verticais em pacientes adultos demonstrou correção eficiente, previsível e estável da mordida aberta.


Subject(s)
Orthodontics , Open Bite , Tooth Diseases , Stomatognathic Diseases , Adult , Orthodontic Anchorage Procedures , Malocclusion
15.
Rev. Cient. CRO-RJ (Online) ; 5(1): 80-86, Jan.-Apr. 2020.
Article in English | LILACS, BBO | ID: biblio-1139967

ABSTRACT

This case report describes an interceptive treatment of anterior open bite (AOB) with fixed palatine grid using clinical, cephalometric, electromyographic and speech analysis data. Case report: An 8-year-old girl, Angle Class I malocclusion presenting AOB. The complete orthodontic documentation was obtained and the perioral muscles were evaluated using the electromyography during blowing, sucking and smiling activities, before and after treatment. Speech acoustic evaluation was performed through the frequencies of the formants to assess the position of the tongue. Results: The AOB was corrected in six months with reduction of vertical transpass, decrease of cephalometric Angles 1: NA and 1: NB and increase of interincisal angle. During the smile movement, it was possible to observe the decrease of the muscular activity of the superior orbicularis muscle and the increase of the muscular activity of the inferior orbicularis. In the blow movement, there was a tendency to decrease muscle activity. Opposite directions were observed at the time of installation of the grid in the frequencies of the formants. When the grid was removed, the tongue was lowered and posteriorized in relation to the installation time. When compared the final and initial moments, it was noted a predominance of tongue lower position, besides posteriorization in some vowels and anteriorization in others. Conclusion: After the use of the fixed palatine crib as an interceptive treatment for AOB, the bite was closed and it was possible to observe an harmony in the patient profile and improvement in periorbital musculature and tongue positioning.


Objetivo: Este relato de caso descreve um tratamento interceptivo da mordida aberta anterior (MAA) com grade palatina fixa usando dados clínicos, cefalométricos, eletromiográficos e de fala. Relato do caso: Menina de 8 anos de idade apresentando maloclusão Classe I de Angle e MAA. A documentação ortodôntica completa foi obtida e os músculos periorais foram avaliados pela eletromiografia durante as atividades de sopro, sucção e sorriso, antes e após o tratamento. A avaliação acústica da fala foi realizada através das frequências dos formantes para avaliar a posição da língua. Resultados: O MAA foi corrigida em seis meses com redução do transpasse vertical, diminuição dos ângulos cefalométricos 1: NA e 1: NB e aumento do ângulo interincisivo. Durante o movimento do sorriso, foi possível observar a diminuição da atividade muscular do músculo orbicular superior e o aumento da atividade muscular do orbicular inferior. No movimento do sopro, houve uma tendência a diminuir a atividade muscular. Direções opostas foram observadas no momento da instalação da grade nas frequências dos formantes. Quando a grade foi removida, a língua foi abaixada e posteriorizada em relação ao tempo de instalação inicial do aparelho. Quando comparados os momentos final e inicial, observou-se predomínio da posição inferior da língua, além de posteriorização em algumas vogais e anteriorização em outras. Conclusão: Após o uso da grade palatina fixa como tratamento interceptivo para a MAA, a mordida foi fechada e foi possível observar harmonia no perfil da paciente e melhora da musculatura periorbital e posicionamento da língua.


Subject(s)
Open Bite , Tooth Diseases , Stomatognathic Diseases , Child , Malocclusion, Angle Class I
16.
Int. j interdiscip. dent. (Print) ; 13(2): 80-83, ago. 2020.
Article in Spanish | LILACS | ID: biblio-1134346

ABSTRACT

RESUMEN: Introducción: El patrón de crecimiento facial se establece antes de la aparición del primer molar permanente. Un exceso de crecimiento vertical facial, corresponde a individuos de cara larga, con ángulos goniacos abiertos, alturas faciales inferiores aumentadas y músculos masticatorios de menor área transversal. Esto se asocia a presentar mordida abierta anterior, mordida cruzada, clase II esquelético, entre otros. El entrenamiento muscular masticatorio podría controlar el excesivo crecimiento vertical, generando fuerzas opuestas que favorezcan un crecimiento horizontal. Objetivo: Describir el efecto del entrenamiento muscular masticatorio en el desarrollo del patrón vertical facial en niños. Método: Se realizó una revisión narrativa mediante búsqueda electrónica en las bases de datos PubMed, EBSCO, Scopus, Cochrane, Trip Database y Epistemonikos. Se utilizaron las palabras clave: "músculos masticatorios", "maseteros", "temporales", "masticación", "ejercicio", "entrenamiento", "crecimiento vertical", "patrón vertical", "dolicofacial", "control vertical". Los términos MeSH: "músculos masticatorios", "ejercicio". Resultados: Se seleccionaron 15 artículos de los cuales 9 son ensayos clínicos, 4 son reportes de caso y 2 son estudios observacionales transversales. Conclusiones: El entrenamiento muscular masticatorio tiene efectos positivos, favoreciendo un mayor crecimiento horizontal en niños con patrón vertical. No obstante, faltan estudios y ensayos clínicos para establecer y cuantificar los cambios morfológicos generados por el entrenamiento muscular.


ABSTRACT: Background: The pattern of facial growth is established before the eruption of the first permanent molar. An excess of vertical facial growth corresponds to individuals with long faces, open gonial angles, higher inferior facial heights and smaller masticatory muscles associated with different dental anomalies like anterior open bite, Brodie bite, skeletal class II and others. The masticatory muscle training could control the excessive growth in the vertical dimension, making opposing forces that will favor the horizontal growth in the patient. Objective: Describe the effect of the masticatory muscle training in the development of the vertical pattern in children. Method: A narrative review was done by an electronic research in PubMed, EBSCO, Scopus, Cochrane, Trip Database y Epistemonikos. The following key words were used: "masticatory muscles", "masseter", "temporalis", "mastication", "chewing", "exercise", "training", "vertical growth", "vertical pattern", "dolichofacial", "vertical control". The MeSH terms: "masticatory muscles", "exercise". Results: Fifteen articles were selected, 9 of them were clinical trials, 4 were case reports and 2 were observational studies. Conclusions: The literature review shows that the masticatory muscle training has positive effects, favoring the horizontal growth in children with vertical facial pattern. Nevertheless, there is a lack of studies and clinical trials, that could help us to establish and quantify the morphological changes made by the masticatory muscle training.


Subject(s)
Humans , Child, Preschool , Child , Adolescent , Exercise , Open Bite , Mastication , Masticatory Muscles , Molar
17.
Dental press j. orthod. (Impr.) ; 25(4): 16-22, July-Aug. 2020. graf
Article in English | LILACS, BBO | 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
18.
Dental press j. orthod. (Impr.) ; 25(4): 23e1-23e7, July-Aug. 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1133677

ABSTRACT

ABSTRACT Objective: This study aimed to compare the root length of maxillary and mandibular incisors between individuals with open bite versus matched individuals with adequate overbite. Methods: This comparative, matched and retrospective study included 48 cone beam computed tomographies (CBCTs) obtained at a university radiological center. Scans belonged to 24 individuals with open bite (overbite ≤ 0 mm) and 24 individuals with adequate overbite (controls). Both groups were matched by age, sex, malocclusion classification and skeletal characteristics (ANB and FMA angles). Root length of each maxillary and mandibular incisor was measured in millimeters (mm) in a sagittal section from a perpendicular line to the enamel cement junction until the root apex (384 length measurements were made). The means of root length in both groups were compared using t-tests. In addition, correlations between variables were evaluated with the Pearson correlation coefficient (α = 0.05). Results: In both groups, the root length of the upper central incisors was approximately 12 mm and the root length of the maxillary lateral incisors was approximately 13 mm (p˃ 0.05). Likewise, the root length of lower central incisors in both groups measured approximately 12 mm (p˃ 0.05). However, the mandibular lateral incisor roots of open bite patients were significantly longer than in the normal overbite patients (approximately 1 mm, p= 0.012 right side, p= 0.001 left side). Conclusions: Root length of maxillary incisors and central mandibular incisor is similar in individuals with or without open bite, but the mandibular lateral incisor roots in open bite patients were significantly longer than in the normal overbite patients.


RESUMO Objetivo: O presente estudo teve como objetivo comparar o comprimento radicular de incisivos superiores e inferiores em indivíduos com mordida aberta versus indivíduos com sobremordida normal. Método: Esse estudo comparativo e retrospectivo incluiu 48 tomografias computadorizadas de feixe cônico (TCFC) obtidas em um centro radiológico universitário. As tomografias foram realizadas em 24 indivíduos com mordida aberta (sobremordida ≤ 0 mm) e 24 indivíduos com sobremordida normal (controle). Ambos os grupos foram compatibilizados de acordo com a idade, sexo, má oclusão e padrão esquelético (ângulos ANB e FMA). O comprimento radicular de todos os incisivos superiores e inferiores foi medido em milímetros (mm) em um corte sagital, de uma linha perpendicular à junção cemento-esmalte até o ápice radicular (384 medidas de comprimento foram realizadas). A média de comprimento radicular em ambos os grupos foi comparada utilizando-se o teste t. Adicionalmente, correlações entre as variáveis foram avaliadas usando o coeficiente de correlação de Pearson (α = 0,05). Resultados: Em ambos os grupos, o comprimento radicular dos incisivos centrais superiores foi de, aproximadamente, 12 mm, e o comprimento radicular dos incisivos laterais superiores foi de, aproximadamente, 13 mm (p˃ 0,05). Da mesma forma, o comprimento radicular dos incisivos centrais inferiores, em ambos os grupos, obteve a medida de aproximadamente 12 mm (p>0,05). No entanto, o comprimento radicular dos incisivos laterais inferiores em indivíduos com mordida aberta foi significativamente maior em comparação aos pacientes com sobremordida normal (aproximadamente 1 mm, p=0,012 do lado direito, p=0,001 do lado esquerdo). Conclusões: O comprimento radicular de incisivos superiores e incisivos centrais inferiores foi similar em indivíduos com ou sem mordida aberta, mas o comprimento radicular de incisivos laterais inferiores em indivíduos com mordida aberta foi significativamente maior em comparação a pacientes com sobremordida normal.


Subject(s)
Humans , Open Bite/diagnostic imaging , Spiral Cone-Beam Computed Tomography , Cephalometry , Retrospective Studies , Cone-Beam Computed Tomography , Incisor/diagnostic imaging , Maxilla/diagnostic imaging
19.
Dental press j. orthod. (Impr.) ; 25(4): 75-84, July-Aug. 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1133674

ABSTRACT

ABSTRACT Adult patients with anterior open bite and hyperdivergent retrognathic phenotype demand complex treatments, as premolar extractions, molar intrusion or orthognathic surgery. In the present clinical case, a young adult patient without significant growth, with Class I and anterior open bite, was treated with four premolar extractions. The therapeutic result shows good intercuspation, good facial esthetic, good function balance, and stability in a two-year post-fixed treatment follow-up.


RESUMO Pacientes adultos com mordida aberta anterior e fenótipo hiperdivergente retrognata demandam tratamentos complexos, com extrações de pré-molares, intrusão de molares ou cirurgia ortognática. No presente caso clínico, uma jovem adulta sem potencial significativo de crescimento, apresentando Classe I e mordida aberta anterior, foi tratada com extrações de quatro primeiros pré-molares. O resultado terapêutico alcançou boa intercuspidação, boa estética facial e bom equilíbrio funcional, e mostrou-se estável depois de dois anos da remoção do aparelho fixo.


Subject(s)
Humans , Young Adult , Open Bite , Open Bite/therapy , Orthodontic Anchorage Procedures , Orthognathic Surgical Procedures , Phenotype , Tooth Movement Techniques , Cephalometry
20.
J. oral res. (Impresa) ; 9(4): 293-299, ago. 31, 2020. tab
Article in English | LILACS | ID: biblio-1179064

ABSTRACT

Aim: To evaluate the association between the frequency of malocclusions in the anterior sextant with dentition type, age, and sex. Material and methods: A descriptive, transversal and prospective study was carried out, in a convenience sample of 200 patients between 3 and 14 years old, of both sexes who attended the pediatric dentistry clinic of Dentistry Faculty from Autonomous University of Tlaxcala, Mexico. A dentist was standardized by a direct method (k=0.998, p=0.0001). Results: Crossbite and edge to edge bite were the most frequent (18% and 17% respectively), in no case the alterations in the previous sextant were related to sex, except altered overjet with age and dentition type (likelihood ratio=18,169, p=0.0001) (X2=18.820, p=0.0001). Conclusion: These observations highlight the importance of the diagnosis of possible alterations in the occlusion of the anterior sextant in both dentitions, in order to preventatively avoid major sequelae.


Objetivo: Evaluar la asociación entre la frecuencia de maloclusiones en el sextante anterior con el tipo de dentición, la edad y el sexo. Material y Métodos: Se llevó a cabo un estudio descriptivo, transversal, prolectivo en una muestra por conveniencia conformada por 200 pacientes entre 3 y 14 años, de ambos sexos atendidos en la clínica de odontopediatría de la Facultad de Odontología, de la Universidad Autónoma de Tlaxcala. Se estandarizó a una cirujana dentista a través del método directo (k=0,998, p=0,0001). Resultados: La mordida cruzada y borde a borde fueron las que se presentaron con mayor frecuencia (18% y 17% respectivamente), en ningún caso las alteraciones en el sextante anterior se relacionaron con el sexo, no así, el resalte alterado que se asoció con la edad y con el tipo de dentición (Razón de verosimilitudes=18.169, p=0.0001, X2=18.820, p=0.0001). Conclusión: El comportamiento observado permite reconocer la importancia del diagnóstico de las alteraciones en la oclusión del sextante anterior en ambas denticiones, con el propósito de actuar anticipadamente para evitar secuelas mayores.


Subject(s)
Humans , Male , Female , Child, Preschool , Child , Adolescent , Malocclusion/epidemiology , Cross-Sectional Studies , Open Bite , Malocclusion/diagnosis , Mexico/epidemiology
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