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1.
Rev. Odontol. Araçatuba (Online) ; 43(2): 35-42, maio-ago. 2022. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1362023

ABSTRACT

Introdução: As cerâmicas odontológicas são amplamente utilizadas na Odontologia, desfrutando de grande popularidade devido a sua capacidade de mimetizar as características ópticas do esmalte e da dentina. O constante desenvolvimento de pesquisas tem desencadeado o lançamento de novos sistemas cerâmicos com propriedades aprimoradas e melhores resultados clínicos em longo prazo. Objetivo: O relato de caso aqui apresentado descreve uma reabilitação da zona estética do sorriso com laminados cerâmicos por meio de uma abordagem minimamente invasiva. Relato de caso: Paciente do gênero feminino, compareceu à clínica odontológica relatando insatisfação com a aparência do seu sorriso. Durante avaliação foram observadas, na região anterossuperior, restaurações extensas em resina composta deficientes nos incisivos, com proporção, volume, forma e texturização insatisfatórias, que em conjunto comprometia a zona estética do sorriso. Diante disso, após fotografias extra e intraorais, o tratamento proposto foi a reabilitação com laminados cerâmicos nas unidades 1.2 ao 2.2. Assim, foi realizado o enceramento e o mock-up, os quais serviram de orientação para os preparos dentários, a seguir, foram moldados e as restaurações confeccionadas no sistema IPS e.max. Após prova de cor e adaptação, os preparos e a superfície interna dos laminados cerâmicos foram tratados e cimentados com cimento resino fotopolimerizável. Conclusão: Instituindo uma abordagem conservadora, o plano de tratamento realizado através da reabilitação com laminados cerâmicos nas unidades dentárias anterossuperiores, permitiu o restabelecimento da função e estética, com reprodução das características dos dentes naturais e promoção do equilíbrio, da jovialidade e da harmonia no sorriso(AU)


Introduction: Dental ceramics are widely used in dentistry, enjoying great popularity due to the ability to mimic both enamel and dentin optical characteristics. The constant research development has triggered the launch of new ceramic systems with improved properties and better long-term clinical results. Objective: The case report presented here describes the zone rehabilitation of the aesthetic smile with ceramic laminates through a minimally invasive approach. Case report: Female patient, attended the dental clinic reporting dissatisfaction with the appearance of her smile. During the evaluation, extensive restorations in composite resin were observed in the incisors in the anterosuperior region, with unsatisfactory proportion, amount, shape and texturing, which together compromised the aesthetic zone of the smile. Faced with this, after extra and intraoral photographs, the proposed treatment was the restoration with the ceramic laminates in units 1.2 to 2.2. Thus, waxing and mock-up were performed, which served as guidance for the dental preparations, then they were molded and restorations fabricated in the IPS e.max system. After shade and adaptation proof, the preparations and the inner ceramic laminates surface were treated and cemented with light-cured resin cement. Conclusion: Adopting a conservative approach, the treatment plan carried out through restoration with ceramic laminates on the upper anterior teeth allowed the recovering function and aesthetics, reproducing characteristics of natural teeth and promoting balance, joviality and harmony in the smile(AU)


Subject(s)
Humans , Female , Ceramics , Dental Veneers , Esthetics, Dental , Smiling , Composite Resins , Incisor
2.
Rev. Odontol. Araçatuba (Online) ; 43(2): 43-48, maio-ago. 2022. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1362032

ABSTRACT

Casos de fraturas dentárias oblíquas muitas vezes possuem um prognóstico desfavorável, geralmente com indicação da extração do elemento dental. O presente artigo visou relatar o tratamento do caso clínico de um paciente do sexo masculino, 12 anos, que compareceu à Unidade de Saúde Bucal do Hospital Universitário de Brasília com encaminhamento de extração do dente 12, apresentando fratura oblíqua que se estendia subgengivalmente na face vestibular. O trauma havia ocorrido há três anos e o paciente havia sido submetido a diversas intervenções endodônticas, apresentando no momento da consulta inicial por nossa equipe uma lesão periapical extensa. Após a realização da anamnese, exame clínico e radiográfico, foi adotada uma abordagem multidisciplinar conservadora com a manutenção do dente e a realização da enucleação da lesão periapical por meio de intervenção cirúrgica e posterior reabilitação. Em uma mesma sessão, foi realizada a obturação do conduto com cone de guta percha e cimento sealer 26 e a cirurgia parendodôntica juntamente com a apicoplastia. Uma semana após a intervenção cirúrgica foi realizada restauração classe IV com resina composta baseada no enceramento dos modelos de diagnóstico montados em articulador. Com base em uma avaliação criteriosa e multidisciplinar, foi possível adotar uma abordagem conservadora no caso em questão, com a manutenção e reabilitação de um dente permanente em um paciente jovem, evitando a indicação de exodontia(AU)


Cases of oblique dental fractures often have an unfavorable prognosis, usually with the indication of extraction of the dental element. The present article aimed to report the treatment of the clinical case of a 12-year-old male patient, who attended the Oral Health Unit of the Hospital Universitário de Brasília with a referral for extraction of tooth 7, presenting an oblique fracture that extended subgingivally on the labial surface. The trauma had occurred three years ago and the patient had undergone several endodontic interventions, presenting an extensive periapical lesion at the time of the initial consultation by our team. After anamnesis, clinical and radiographic examination, a conservative multidisciplinar approach was adopted with the maintenance of the tooth and the enucleation of the periapical lesion through surgical intervention and subsequente rehabilitation. In the same session, the conduit was filled with gutta-percha cone and sealer cement 26 and parendodontic surgery was performed together with apicoplasty. One week after the surgical intervention, class IV restoration was performed with composite resin based on the waxing of the diagnostic models mounted on an articulator. Based on a careful and multidisciplinary evaluation, it was possible to adopt a conservative approach in the case in question, with the maintenance and rehabilitation of a permanent tooth in a young patient, avoiding the indication of extraction(AU)


Subject(s)
Humans , Male , Child , Tooth Fractures/therapy , Dental Pulp Cavity/surgery , Dental Pulp Cavity/injuries , Periapical Abscess , Root Canal Therapy , Tooth Fractures , Tooth Fractures/surgery , Tooth Fractures/diagnosis , Incisor
3.
Pesqui. bras. odontopediatria clín. integr ; 22: e210058, 2022. tab, graf
Article in English | LILACS, BBO | ID: biblio-1365226

ABSTRACT

ABSTRACT Objective To evaluate and compare the effect of 17% Ethylenediaminetetraacetic Acid (EDTA), 9% Etidronic acid (HEDP), and 7% Maleic acid (MA) on the push-out bond strength of NeoMTA Plus sealer to the coronal, middle, and apical thirds of root canal dentin. Material and Methods Forty single-rooted human maxillary central incisors were selected and decoronated to 12 mm long root fragments. Working length was established and root canals were then enlarged up to rotary Protaper F3. After each instrumentation, the root canal was irrigated with 2.5% NaOCl. For the final irrigation regimen, the specimens were divided into 4 groups (n=10) and treated with EDTA, HEDP, MA or Saline. Root canals were coated with NeoMTA Plus sealer, and obturation was done with single cone obturation technique. Subsequently, three horizontal sections were taken from the coronal, middle and apical thirds of each specimen, and POBS was measured using a universal testing machine. The type of bond failures was assessed under a stereomicroscope. Statistical analysis was done with One-way ANOVA with Tukey's Post hoc analysis. Results MA and EDTA showed the highest POBS. There was no significant difference in bond strength between MA and EDTA (p>0.05). HEDP and Saline showed lower POBS. Among all the four groups, the coronal third showed the highest values, followed by middle and apical thirds. Conclusion The type of chelating agent used during the root canal treatment significantly affects the bond strength of NeoMTA Plus to the root canal dentin.


Subject(s)
Humans , Root Canal Filling Materials , Tensile Strength , Chelating Agents/chemistry , Dental Cements , Endodontics , Analysis of Variance , Edetic Acid , Etidronic Acid , Dental Materials/chemistry , Incisor , India , Maleic Hydrazide
4.
Rev. Círc. Argent. Odontol ; 79(230): 29-32, dic. 2021. tab, graf
Article in Spanish | LILACS | ID: biblio-1358700

ABSTRACT

Este trabajo de investigación tiene como finalidad comparar la inclinación del incisivo inferior pre y post-tratamiento en pacientes tratados ortodóncicamente con técnicas Roth y técnica Damon a los cuales no se les realizó exodoncias. El grupo de estudio estuvo conformado por 150 pacientes adultos con dentición permanente completa que han sido atendidos en el Círculo Argentino de Odontología. Para medir la inclinación se utilizó la fórmula de Tweed: ángulo IMPA, eje axial del incisivo inferior con el plano mandibular. Los valores tomados de los trazados pre y post-tratamiento fueron sometidos a un test de Student apareado utilizando el programa Infostat v 2010. Se encontró una diferencia significativa en la inclinación axial del incisivo inferior post tratamiento cualquiera sea la técnica utilizada, aumenta en ambos casos. No se realizó discriminación de torques (Roth ­ 1°, Damon torque estándar ­ 3°, Damon bajo torque - 11°) (AU)


This research work aims to compare the inclination of the lower incisor before and after treatment in patients treated orthodontically with Roth techniques and Damon technique to which no exodontics were performed. The study group consisted of 150 adult patients with complete permanent dentition who have been treated in Circulo Argentino de Odontología. To measure the inclination the Tweed formula was used: IMPA angle, axial axis of the lower incisor with the mandibular plane. The values taken from the pre and post-treatment plots were subjected to a Student test paired using the Infostat v 2010 program. A significant difference was found in the axial inclination of the lower incisor post treatment whatever the technique used, it increases in both cases. No torques discrimination was performed (Roth - 1 °, Damon standard torque - 3 °, Damon under torque - 11 °) (AU)


Subject(s)
Humans , Male , Female , Orthodontics, Corrective/methods , Cephalometry/methods , Orthodontic Brackets , Incisor , Argentina , Societies, Dental , Statistical Analysis , Retrospective Studies , Analysis of Variance , Longitudinal Studies , Mandible
5.
Rev. Ciênc. Méd. Biol. (Impr.) ; 20(2): 240-244, set 29, 2021. fig, tab
Article in Portuguese | LILACS | ID: biblio-1354433

ABSTRACT

Introdução: a detecção da reabsorção da raiz dentária é realizada por meio de exames de imagens, pois frequentemente não apresenta sinal e sintoma clínicos. Dentre os exames de imagem disponíveis, o exame radiográfico periapical, é indicado para diagnóstico, prognóstico e acompanhamento da reabsorção radicular. Objetivo: o estudo tem como objetivo investigar a relação de diferentes resoluções espaciais com o diagnóstico de reabsorção radicular. Metodologia: foram realizados desgastes simulando reabsorção externa no terço apical e vestibular de 15 (quinze) incisivos inferiores, radiografados em crânio seco, antes e depois do desgaste. A técnica radiográfica foi realizada utilizando o sistema VistaScan (Durr Dental, Bietigheim-Bissingen, Germany), aparelho CS 2200 (Carestream Dental LLC, Atlanta-GA, USA) usando tempo de exposição de 0,15 segundos e escaneadas sob diferentes protocolos de resolução espacial, a saber, 20 pares de linhas por milímetro (pl/mm) e 40 pl/mm. Posteriormente dois avaliadores experientes fizeram análises das referidas imagens sem conhecimento prévio da resolução de escaneamento. Resultados: 75% das radiografias realizadas com 20 pl/mm foram classificadas como excelentes pelos avaliadores, contra 33% com 40 pl/mm, estatisticamente significativa. Discussão: ao avaliar a reabsorção radicular, obteve-se uma acurácia diagnóstica igual para os dois protocolos sem distinção, estatisticamente significativa, entre localização ou profundidade. Conclusão: tendo em vista que para os examinadores imagens com 20 pl/mm foram satisfatórias, com percentual de qualidade maior quando comparado a imagens obtidas com 40 pl/ mm, este estudo indica o emprego de imagens com 20 pl/mm para avaliação inicial de suspeita de reabsorções nas raízes dentárias.


Introduction: the detection of tooth root resorption is carried out by means of imaging tests, as it often does not present a clinical sign and symptom. Among the imaging tests available, the periapical radiographic examination is indicated for diagnosis, prognosis and monitoring of root resorption. Objective: the study aims to investigate the relationship of different spatial resolutions in the diagnosis of root resorption. Methods: Artificial external root resorptions were simulated using burs by drilling to the entire depth in different locations at the apical and buccal thirds of 15 (fifteen) lower incisors were worn, radiographed on a dry skull, before and after wear. The radiographic technique was performed using the VistaScan system (Durr Dental, Bietigheim-Bissingen, Germany), CS 2200 device (Carestream Dental LLC, Atlanta-GA, USA) using an exposure time of 0.15 seconds and scanned under different resolutions protocols, namely, 20 pairs of lines per millimeters (pl/mm) and 40 pl/mm. Subsequently, two experienced evaluators performed analyzes of these images without prior knowledge of the scanning resolution. Results: seventy-five percent of the radiographs taken at 20 pl/mm were rated as excellent by the evaluators, against 33% at 40 pl/mm, a statistically significant difference. Discussion: When assessing root resorption, a similar diagnostic accuracy was obtained for the two protocols without a statistically significant distinction between location or depth. Conclusions: Considering that for examiners images with 20 pl/mm were satisfactory, with a percentage of quality greater than 40 pl/mm, this study indicates the use of 20 pl/mm for initial evaluation of suspected root resorption.


Subject(s)
Humans , Root Resorption , Tooth Root , Diagnostic Imaging , Radiography, Dental, Digital , Research , Dimensional Measurement Accuracy , Incisor
6.
Rev. Odontol. Araçatuba (Impr.) ; 42(2): 9-17, maio-ago. 2021. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1252898

ABSTRACT

As reabsorções radiculares são classificadas em interna e externa e um correto diagnóstico é fundamental para o sucesso no tratamento e é de suma importância que a resolução clínica seja feita precocemente para que se tenha um prognóstico clínico favorável. Reabsorção interna não é comum em dentes permanentes, e seu processo se caracteriza por um aumento do canal radicular de forma oval. O presente estudo teve como objetivos demonstrar e descrever através de um relato de prontuário o tratamento de reabsorção radicular interna de incisivos superiores permanentes. Através da seleção de uma paciente pela disciplina de Triagem da clínica odontológica do Centro Universitário da Serra Gaúcha, a qual apresentou alterações radiográficas compatíveis com reabsorção radicular interna inflamatória na região de dois incisivos superiores permanentes, com lesão periapical estabelecida em ambos, concluiu-se o tratamento para então gerar este estudo do tipo retrospectivo observacional. A reabsorção quando não tratada pode avançar e envolver estruturas além do tecido conjuntivo inflamado e a lesão pode avançar em direção apical. Após estabelecido o diagnóstico, iniciou-se os tratamentos endodônticos dos elementos utilizando hidróxido de cálcio como medicação intracanal, após as trocas de medicações as reabsorções foram controladas e então, as obturações dos canais foram realizadas, buscando um preenchimento adequado para o caso. A reabsorção radicular interna inflamatória causa danos irreversíveis, mas seu processo foi controlado através de terapia endodôntica. Este desempenho é considerado uma patologia, e pode comprometer qualquer extensão da raiz, é comum que os casos permaneçam assintomáticos, portanto, deve ser tratado o mais breve possível assim que descobertos para evitar sua progressão, e consequentemente danos maiores(AU)


Root resorption is classified as either internal or external, and a correct diagnosis is essential for successful treatment. Internal resorption is not common in permanent teeth, and its process is characterized by an enlarged oval root canal. The present study aims to demonstrate and describe, through a medical record, the treatment of internal root resorption of permanent upper incisors. A patient was selected from the Triage Course of the Dental Clinic (Centro Universitário da Serra Gaúcha) who presented radiographic changes associated with inflammatory internal root resorption in two permanente upper incisors, with a periapical lesion established in both and a treatment was then carried out in order to generate this retrospective observational study. Resorption when left untreated can progress and involve structures beyond the inflamed connective tissue and the lesion can advance in the apical direction. After the diagnosis was confirmed, endodontic treatments were initiated using calcium hydroxide as an intracanal medication. After changing the medication, the resorption was controlled and then the canal fillings were performed, seeking an adequate filling for the case. Inflammatory internal root resorption causes irreversible damage, but its process has been controlled through endodontic therapy. This performance is considered a pathology, and can compromise any extension of the root, it is common for the cases to remain asymptomatic, therefore, it should be treated as soon as it's discovered to prevent its progression, and consequently greater damage(AU)


Subject(s)
Humans , Female , Adult , Root Canal Therapy , Root Resorption , Root Resorption/therapy , Incisor , Calcium Hydroxide , Dentition, Permanent , Tooth, Nonvital , Dental Pulp Cavity
7.
Rev. argent. radiol ; 85(2): 33-40, abr. 2021. tab, graf
Article in Spanish | LILACS, BINACIS | ID: biblio-1288197

ABSTRACT

Resumen Objetivo: Evaluar la diferencia del trazado cefalométrico manual con el digital en radiografías laterales de cráneo. Materiales y métodos: Inicialmente se realizó un piloto para calibrar al investigador principal, en donde se analizaron 10 radiografías pertenecientes a cinco pacientes del Servicio de Radiología del Centro Odontológico de nuestra institución para evaluar la concordancia entre los dos evaluadores y establecer el tamaño de la muestra. Finalmente, se analizaron 78 radiografías cefalométricas de 39 pacientes, en las que se realizó el trazado cefalométrico de Steiner manual y digital. Esas radiografías se analizaron en una escala 1:1 y posteriormente se evaluó la diferencia de las mediciones mediante el análisis univariado, se determinó en mediana e intervalo intercuartil por separado. En el análisis bivariado, se aplicó la prueba de signo de rangos de Wilcoxon y muestras pareadas para determinar la diferencia de las mediciones cefalométricas de Steiner entre el tipo del análisis cefalométrico. El nivel de significancia se fijó en p < 0,05 y confiabilidad al 95%, respectivamente. Resultados: No hubo diferencia significativa en la mayoría de las mediciones hechas de manera manual y digital, siendo el ángulo interincisal la única medición angular en la cual hubo diferencia significativa al obtener un resultado de p = 0,002. Mientras tanto, en las mediciones lineales, la única medición en la que hubo diferencia significativa fue en el segmento incisivo inferior - NB con p = 0,005. Conclusión: No se encuentran diferencias significativas entre el trazado cefalométrico manual y el digital. No obstante, es importante tener en cuenta que la muestra o población evaluada es reducida para definir conclusiones.


Abstract Objective: To evaluate the difference of the manual cephalometric tracing with the digital tracing on lateral cranial radiographs. Materials and Methods: Initially, a pilot study was carried out to calibrate the principal investigator, where 10 radiographs belonging to 5 patients of the Radiology Service of the Dental Center, were analyzed to evaluate the intraclass concordance between the two evaluators. To establish the size of the sample, finally, 78 cephalometric radiographs of 39 patients were analyzed, in which the manual and digital Steiner cephalometric tracing was performed. These radiographs were analyzed on a 1: 1 scale and then the difference of the measurements was evaluated using the univariate analysis, which was determined in the median and interquartile range, separately. In the bivariate analysis, the Wilcoxon rank sign test and paired samples were applied to determine the difference of Steiner's cephalometric measurements between the cephalometric analysis type. The level of significance was set at p < 0.05 and 95% reliability, respectively. Results: There was no significant difference in most of the measurements made manually and digitally. The interincisal angle the only angular measurement in which there was a significant difference when obtaining a result of p = 0.002, while, in the linear measurements, the only measurement in which there was significant difference was in the lower incisor segment - NB with p = 0.005. Conclusion: There is no significant difference between manual and digital cephalometric tracing, nevertheless it is important to keep in mind that the simple or population evaluated is reduced to define conclusions.


Subject(s)
Humans , Adolescent , Adult , Middle Aged , Cephalometry , Radiography, Dental, Digital , Patients , Population , Radiology , Research Personnel , Skull , Measurements, Methods and Theories , Radiography, Dental , Pilot Projects , Organizations , Sample Size , Materials , Incisor , Methods
8.
Rev. Ciênc. Plur ; 7(1): 14-29, jan. 2021. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-1147542

ABSTRACT

Introdução:Técnicas para extração dentária vêm sendo aperfeiçoadas objetivando um procedimento que diminua o esforço profissional, o tempo cirúrgicoeamenize as dores e os processos inflamatórios. Neste sentido os extratores minimamente traumáticos,com a exodontia vertical, propõem-se a preservar o osso alveolar e proporcionar uma recuperação mais rápida e confortável para o paciente. Objetivo:Avaliar a efetividade do kit para extração minimamente traumática da Maximus® (Contagem, Minas Gerais, Brasil) na exodontia de raízes residuais de incisivos, caninos e pré-molares unirradiculares. Metodologia:Trata-se de um ensaio clínico, prospectivo e analítico. Os pacientes foram operados utilizando o dispositivo, sendo avaliados os dados demográficos, tempo cirúrgico, dor e conforto após a cirurgia, bem como o grau de satisfação profissional com o uso do dispositivo. Para verificar diferenças significativas foi utilizado o teste de Mann-Whitney e a busca de associações foi realizada com o Exato de Fisher. Para todos os testes foi estabelecida uma significância com p<0,05.Resultados:Quarenta elementos foram removidos, o tempo cirúrgico foi em média 16,28 minutos, níveis de dor e conforto imediatamente após a cirurgia se mantiveram baixos (p<0,0001), e o grau de satisfação profissional se manteve alto (p<0,0001). A taxa de sucesso do dispositivo foi de 93,3% para os elementosincisivos e 20% para os elementos caninos e pré-molares (p<0,0001).Conclusões:A eficácia do extrator é determinada pelo tamanho da superfície radicular cobertas com fibras periodontais e a localização do dente. No entanto pode ser bem indicada no planejamento de reabilitações implantosuportadas em região anterior de maxila e mandíbula (AU).


Introduction:Techniques for tooth extraction have been improvedaiming at a procedure that reduces professional effort, surgical time, pain and inflammatory processes. In this sense, minimally traumatic extractors with vertical extraction, propose to preserve the alveolar bone and provide a faster and more comfortablerecovery for the patient. Objective:To evaluate the effectiveness of the Maximus® Minimally Traumatic Extraction Kit (Contagem, Minas Gerais, Brasil) in the extraction of uniradicular residual roots from incisors, canines and premolars.Methodology:Thisis a clinical, prospective and analytical trial. Patients were operated on using the device, and demographic data, surgical time, pain and comfort after surgery were evaluated, as well as the degree of professional satisfaction with the use of the device.To verify significant differences, the Mann-Whitney test was used and the search for associations was performed with Fisher's exact test. For all tests, significance was set at p<0.05.Results:Forty elements were removed, surgical time averaged 16.28 minutes, levels of pain and comfort immediately after surgery remained low (p<0.0001), and the degree of job satisfaction remained high (p<0.0001). The success rate of the device was 93.3% for the incisor elements and 20% for the canine and premolar elements (p<0.0001).Conclusions:The effectiveness of the extractor is determined by the size of the root surface covered with periodontal fibers and the location of the tooth. However, can be well indicated in planning implanted rehabilitation in the anterior region of the maxilla and mandible (AU).


Introducción: Se han mejorado las técnicas de extracciónde dientescon el objetivo de un procedimiento que reduzca el esfuerzo profesional, el tiempo quirúrgico, el dolor y los procesos inflamatorios. En este sentido, los extractores mínimamente traumáticos con extracción vertical tienen como objetivo preservar el hueso alveolar y proporcionar una recuperación más rápida y cómoda para el paciente. Objetivo: Evaluar la efectividad del Kit de Extracción Mínimamente Traumática Maximus® (Contagem, Minas Gerais, Brasil) en la extracción de raíces residuales de incisivos, caninos y premolares uniradiculares. Metodología: Es un ensayo clínico, prospectivo y analítico. Los pacientes fueron intervenidos con el dispositivo y se evaluaron datos demográficos, tiempo quirúrgico, dolor y comodidad después de la cirugía, así como el grado de satisfacción laboral con el uso del dispositivo. Para verificar diferencias significativas se utilizó la prueba de Mann-Whitney y la búsqueda de asociaciones se realizó mediante la prueba exacta de Fisher. Para todas las pruebas, la significancia se estableció en p <0,05. Resultados:Se retiraron cuarenta ítems, el tiempo quirúrgico promedió 16,28 minutos, los niveles de dolor y comodidad inmediatamente después de la cirugía permanecieron bajos (p<0,0001) y el grado de satisfacción laboral se mantuvo alto (p<0,0001). La tasa de éxito del dispositivo fue del 93,3% para los elementos incisivos y del 20% para los elementos caninos y premolares (p<0,0001).Conclusiones: La efectividad del extractor está determinada por el tamaño de la superficie radicular cubierta por fibras periodontales y la ubicación del diente. Sin embargo, puede resultar muy adecuado para planificar la rehabilitación con implantes en la región anterior del maxilar y la mandíbula (AU).


Subject(s)
Humans , Surgery, Oral , Tissue Preservation , Tooth Extraction/instrumentation , Minimally Invasive Surgical Procedures/instrumentation , Alveolar Process/surgery , Bicuspid , Effectiveness , Brazil , Efficacy , Prospective Studies , Statistics, Nonparametric , Cuspid , Incisor
9.
Rev. Ciênc. Plur ; 7(1): 235-244, jan. 2021. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1284540

ABSTRACT

Introdução:As manchas dentárias, dentre elas a hipoplasia do esmalte,corresponde a um dos motivos que fazem com que os pacientes busquem alterações no seu sorriso.O tratamento proposto deve ser sempre o mais conservador possível e buscar devolver a autoestima do paciente. Objetivo:Este trabalho objetivou apresentarum relato de caso clínico de paciente do sexo feminino, 26 anos, insatisfeita com a estética do seu sorriso por apresentar dentes escurecidos e hipoplasia de esmalte na face vestibular, em incisivo superior.Descrição do caso:Ao exame clínico foi observado escurecimento fisiológico e hipoplasia de esmalte no incisivo lateral superior esquerdo (22).O plano de tratamento proposto foi clareamento dental pela técnica associada (técnica de consultório + técnica caseira), remoção da mancha hipoplásica de formaminimamente invasiva e restauração em resina composta direta. Conclusões:Através de um correto diagnóstico, associado a uma técnica e seleção de material adequado, foi possível conseguir excelência estética com preservação de estrutura dentária sadia (AU).


Introduction:Dental stains, including enamel hypoplasia, correspond to one of the reasons that make patients seek changes in their smile. The proposed treatment should always be as conservative as possible and seek to restore the patient's self-esteem.Objective:This study aimedto present a clinical case report of a 26-year-old female patient, dissatisfied with the aesthetics of her smile as she had darkened teeth and enamel hypoplasia on the vestibular face, in anupper incisor. Case description:On clinical examination, physiological darkening and enamel hypoplasia were observedon the left upper lateral incisor (22). The proposed treatment plan was dental bleaching using the associated technique (In-office bleaching+ at-home bleaching), removal of the hypoplastic stain in a minimally invasive manner and restoration in direct composite resin.Conclusions:Through a correct diagnosis, associated with a technique and selection of suitable material, waspossible to achieve aesthetic excellence with preservation of healthy dental structure (AU).


ntroducción: Las manchas dentales, incluida la hipoplasia del esmalte, corresponden a una de lasrazones que hacenquelos pacientes busquencambios em susonrisa. El tratamiento propuestosiempredebe ser lo másconservador posible y tratar de restablecerla autoestima del paciente.Objetivo: Este estudio tuvo como objetivo presentarun informe de caso clínico de una paciente de 26 años de edad, insatisfechacon la estética de susonrisa, ya que habíaoscurecidolosdientes y la hipoplasia del esmalte en lasuperficie vestibular, en el incisivo superior.Descripcióndel caso: Enelexamen clínico, se observó oscurecimiento fisiológico e hipoplasia del esmalte en el incisivo lateral superior izquierdo (22). El plan de tratamiento propuestofueel blanqueamiento dental utilizando la técnica asociada (técnica de consultorio + técnica casera), eliminación de la mancha hipoplásica de maneramínimamente invasiva y restauraciónen resina compuestadirecta. Conclusiones: A través de un diagnóstico correcto, asociado con una técnica y selección de material adecuado, fueposible lograr laexcelencia estética conlapreservación de una estructura dental sana (AU).


Subject(s)
Humans , Female , Adult , Tooth Bleaching , Composite Resins , Dental Enamel Hypoplasia , Conservative Treatment , Brazil , Photography, Dental/instrumentation , Incisor
10.
Dental press j. orthod. (Impr.) ; 26(2): e2119378, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1249704

ABSTRACT

ABSTRACT Objective: To determine whether separating the alignment and leveling phases can reduce proclination of the mandibular incisors. Methods: Eligibility criteria included Class I subjects with an irregularity index of 3-5 mm, 3-4 mm curve-of-Spee (COS), and non-extraction treatment. Thirty adults were randomly allocated into two groups: (1) Control group was leveled and aligned simultaneously with flat archwires progressively to 0.016x0.022-in stainless-steel; (2) Experimental group was aligned first with 0.014-in-superelastic NiTi with mild accentuated COS, then leveled using 0.016x0.022-in beta-titanium accentuated COS archwires and gradually reduced the curve until flat. Mandibular incisor position and inclination were evaluated by cephalometric analysis. COS and irregularity index were evaluated in study models. Assessment was conducted twice after 0.016-in NiTi and after 0.016x0.022-in stainless-steel archwire placements. Dental changes from cephalograms and models were compared within group using paired t-test and between groups using independent t-test. Results: Control group: Round-wire-phase, mandibular incisors tipped labially (4.38° and 1 mm) with intrusion (-1.13 mm); Rectangular-wire-phase, mandibular incisors further intruded and proclined (-0.63 mm and 1.38°). Experimental group: During aligning with round accentuated COS archwires, mandibular incisors tipped very slightly labially (0.75° and 0.50 mm) with no significant intrusion; during leveling with rectangular archwires, incisors majorly intruded (1.75 mm) with slight proclination (1.81°). The experimental group had significant less incisor proclination (control: 5.76°, experimental: 2.56°) with more incisor intrusion (control: -1.75 mm, experimental: -2.13 mm). The COS in experimental group showed significant greater reduction (-2.88 mm) than that of the control group (-1.69 mm). Conclusion: In control group, mandibular incisor proclination was markedly observed in round archwires, with further proclination caused by rectangular archwires. In experimental group, minimal proclination was exhibited when accentuated COS round archwires were used for aligning. Leveling with rectangular archwires caused less proclination with more COS reduction.


RESUMO Objetivo: Avaliar se separar os estágios de alinhamento e nivelamento reduz a projeção dos incisivos inferiores. Métodos: Os critérios de inclusão foram indivíduos Classe I com índice de irregularidade de 3-5mm, Curva de Spee (CS) de 3-4mm e tratamento sem extrações. Trinta adultos foram alocados aleatoriamente em dois grupos: o Grupo Controle (1) foi simultaneamente alinhado e nivelado com arcos planos progressivamente até atingir o 0,016" x 0,022" de aço inoxidável; o Grupo Experimental (2) foi inicialmente alinhado com arcos superelásticos NiTi 0,014" com CS levemente aumentada, em seguida nivelado com arcos de beta-titânio 0,016" x 0,022" com CS acentuada, que foi gradualmente reduzida até ficar plana. A posição e inclinação dos incisivos inferiores foram avaliadas por meio de análise cefalométrica. A CS e o índice de irregularidade foram avaliados por meio de modelos de estudo. A avaliação foi realizada duas vezes, sendo após a inserção dos arcos NiTi 0,016" e dos arcos 0,016" x 0,022" de aço. As mudanças dentárias visualizadas nos cefalogramas e nos modelos foram comparadas dentro dos grupos utilizando teste t pareado e entre os grupos utilizando o teste t independente. Resultados: Grupo Controle: estágio de arco redondo: os incisivos inferiores se inclinaram vestibularmente (4.38° e 1 mm) e intruíram (-1,13mm); estágio de arco retangular: os incisivos inferiores intruíram e se projetaram adicionalmente (-0.63mm e 1,38°). Grupo Experimental: Durante o alinhamento com arcos redondos e CS acentuada, os incisivos inferiores se inclinaram levemente para vestibular (0,75° e 0,50mm), sem intrusão significativa; durante o nivelamento com arcos retangulares, os incisivos, em sua maioria, intruíram (1,75mm), com uma leve projeção (1,81°). O grupo experimental apresentou projeção dos incisivos significativamente menor (controle: 5,76°; experimental: 2,56°), com maior intrusão dos incisivos (controle: -1,75mm; experimental: -2,13mm). A CS no Grupo Experimental apresentou redução significativamente maior (-2,88 mm) do que no grupo controle (-1,69 mm). Conclusão: No Grupo Controle, foi observada de forma notória a projeção dos incisivos inferiores nos arcos redondos, com projeção adicional causada pelos arcos retangulares. No Grupo Experimental, foi observada uma projeção mínima quando foram utilizados arcos redondos com CS acentuada para alinhamento. O nivelamento com arcos retangulares causou menos projeção com maior redução da CS.


Subject(s)
Orthodontic Wires , Stainless Steel , Tooth Movement Techniques , Cephalometry , Incisor , Mandible
11.
Dental press j. orthod. (Impr.) ; 26(1): e21bbo1, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1154064

ABSTRACT

ABSTRACT Introduction: Orthodontic treatment in patients with traumatized teeth is a condition that needs good planning in order to achieve satisfactory results. Objective: To discuss approaches to orthodontic treatment of malocclusions associated with trauma followed by avulsion of anterior teeth, reimplanted after a short period of time. Case report: The treatment started with the distalization of upper posterior teeth, with the aid of mini-implants and sliding jigs, followed by the inclusion of anterior teeth in the arch, followed by intrusion of these teeth. Results: With the treatment, improved mobility of the anterior teeth was achieved, with better insertion into bone tissue. The most important factor for satisfactory treatment and a good prognosis for avulsion is the time the tooth remains outside the socket. Orthodontic treatment in patients with traumatized teeth is not contraindicated; however, clinical and radiographic aspects must be considered. Conclusion: Among the feasible orthodontic treatment options, the conservative approach can be a very favorable treatment alternative.


RESUMO Introdução: O tratamento ortodôntico em pacientes com dentes traumatizados é uma condição que necessita de um bom planejamento, a fim de se conseguir resultados satisfatórios. Objetivo: Discutir as abordagens de tratamento ortodôntico de más oclusões associadas ao trauma seguido de avulsão de dentes anteriores, reimplantados após curto espaço de tempo. Relato do Caso: O tratamento realizado iniciou-se com a distalização dos dentes posteriores superiores, com auxílio de mini-implantes e sliding jigs, seguida da inclusão dos dentes anteriores na arcada e intrusão desses dentes. Resultados: Com a realização do tratamento, conseguiu-se melhoria na mobilidade dos dentes anteriores, com inserção mais favorável no tecido ósseo. O fator mais importante para o tratamento satisfatório e um bom prognóstico da avulsão é o tempo em que o dente permanece fora do alvéolo. O tratamento ortodôntico em pacientes com dentes traumatizados não é contraindicado; porém, aspectos clínicos e radiográficos devem ser considerados. Conclusão: Entre as opções de tratamento ortodôntico factíveis, a abordagem conservadora pode ser uma opção de tratamento bastante favorável.


Subject(s)
Humans , Adult , Tooth Avulsion , Conservative Treatment , Malocclusion , Tooth Avulsion/complications , Tooth Avulsion/therapy , Tooth Avulsion/diagnostic imaging , Tooth Movement Techniques , Follow-Up Studies , Incisor/diagnostic imaging
12.
Dental press j. orthod. (Impr.) ; 26(1): e211928, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1154061

ABSTRACT

ABSTRACT Objective: To study the influence of black space between the maxillary central incisors on the aesthetic visual perception of the face, via eye-tracking and visual analogue scale (VAS). Methods: Black space between the central incisors was created, for both sexes, as follows: control, 1-mm black space, 2-mm black space and 3-mm black space. Ninety raters participated in this study, divided into three groups: 30 laypeople, 30 nonorthodontists, and 30 orthodontists. After the visual calibration of each observer, eight photographs were presented in the Ogama® software concomitant with the use of the hardware The Eye Tribe®. Ogama generated information depending on the eye-tracking of each rater, regarding the time until the first fixation, time of fixation, heatmap, scanpath, and total time of fixation, to evaluate the areas deemed to be of interest according to the raters. Later on, the VAS was used, where each rater evaluated the images in an album on a scale of zero to 10 points. Results: The eyes and mouth were the areas more often noticed by the raters according to the heatmaps, while no significant difference was observed in time until the first fixation between the three groups of raters (p> 0.05). However, regarding the time of fixation on the mouth, a significant difference was observed (p< 0.05) when comparing the three groups. Conclusion: Black space has a negative effect on the aesthetic perception of the face. The amount of attention on the mouth is correspondent to the size of the black space.


RESUMO Objetivo: Avaliar a percepção visual e estética do espaço negro entre os incisivos centrais superiores, via rastreamento do olhar e escala visual analógica (EVA). Métodos: Manipulou-se o espaço negro entre os incisivos centrais superiores, para ambos os sexos, da seguinte forma: imagem controle, espaço negro de 1 mm, espaço negro de 2 mm e espaço negro de 3 mm. Participaram desse estudo noventa avaliadores, divididos em três grupos: 30 leigos, 30 cirurgiões-dentistas e 30 ortodontistas. Após a calibração visual de cada observador, foram projetadas oito fotografias no software OGAMA® em conjunto com o hardware The Eye Tribe®. O OGAMA gerou informações do rastreamento do olhar de cada avaliador com relação ao tempo até a primeira fixação, mapa de calor, trajetória do olhar e tempo total de fixação para avaliar as áreas consideradas de interesse, de acordo com os avaliadores. Posteriormente, utilizou-se a EVA para avaliar as imagens a partir de um álbum, em uma escala de 0 a 10 pontos. Resultados: Os olhos e a boca foram as áreas com maior fixação pelos avaliadores, de acordo com os mapas de calor. Os resultados estatísticos não apresentaram diferença estatisticamente significativa entre os três grupos de avaliadores (p> 0,05), quanto ao tempo até a primeira fixação. Porém, em relação ao tempo de fixação na boca, observou-se diferença estatisticamente significativa (p< 0,05) na comparação dos três grupos. Conclusão: O espaço negro apresentou um efeito negativo na percepção estética da face. O aumento de fixação na boca correspondeu ao aumento do tamanho do espaço negro.


Subject(s)
Humans , Male , Female , African Americans , Esthetics, Dental , Eye-Tracking Technology , Incisor , Smiling , Visual Analog Scale , Incisor/anatomy & histology , Incisor/diagnostic imaging
13.
Rev. Fundac. Juan Jose Carraro ; 24(44): 48-53, 2021. ilus, tab, graf
Article in Spanish | LILACS | ID: biblio-1223615

ABSTRACT

La odontología estética no es una disciplina especial o área de la odontología en sí misma, pero con consideraciones funcionales y biológicas, representa uno de los objetivos de las intervenciones de tratamiento dental, que abarca todas las áreas de especialidad, desde la odontología preventiva y restaurativa hasta la prostodoncia, ortodoncia, periodoncia, como, así como la cirugía oral y maxilofacial. El cénit gingival es un importante componente de la sonrisa y su estudio sigue siendo muy relevante en la odontoestética internacional. En el presente trabajo se determinaron distancias del cenit al eje longitudinal y se correlacionaron con otros parámetros gingivales, se establecieron diferencias en las alturas de las papilas interdentales y se correlacionaron los datos métricos de las piezas dentarias anteriores de la población estudiada y los datos conocidos con el fin de obtener datos estadísticos relevantes. Los datos mesurables fueron obtenidos de pacientes de ambos sexos, (18 ­ 25) años, con piezas dentarias del grupo anterior y superior a saber: incisivos centrales, incisivos laterales y caninos superiores, normalmente implantados, libres de lesiones o restaruración, ausencia de enfermedad gingivoperiodontal y sin tratamientos ortodoncicos. El trabajo observacional, descriptivo y tranversal arrojó resultados basados en la estadística preponderante. Provee dimensiones y proporciones de dientes maxilares que pueden adaptarse a pacientes individuales en relación con parámetros establecidos en la odontoestética. Estos datos pueden ser pautas útiles para el diagnóstico y la planificación del tratamiento (especialmente cirugía periodontal) en la dentición maxilar (AU)


A esthetic dentistry is not a special discipline or area of dentistry itself, but with functional and biological considerations, it represents one of the objectives of dental treatment interventions, which covers all areas of specialty, from preventive and restorative dentistry up to prosthodontics, orthodontics, periodontics, as well as oral and maxillofacial surgery. The gingival cenith is an important component of the smile and its study remains very relevant in international dentistry. In this work, distances from the cenith to the longitudinal axis were determined and correlated with other gingival parameters, differences in the heights of the interdental papillae were established and the metric data of the anterior teeth of the studied population were correlated and the known data with in order to obtain relevant statistical data. The measurable data were obtained from patients of both sexes, (18 - 25) years, with teeth of the anterior and superior group, namely: central incisors, lateral incisors and upper canines, normally implanted, free of lesions or restoration, absence of disease gingivoperiodontal and without orthodontic treatments. The observational, descriptive and transverse work produced results based on the preponderant statistics. It provides dimensions and proportions of maxillary teeth that can be adapted to individual patients in relation to parameters established in odontoesthetics. These data can be useful guidelines for diagnosis and treatment planning (especially periodontal surgery) in the maxillary dentition (AU)


Subject(s)
Humans , Male , Female , Adolescent , Adult , Smiling , Esthetics, Dental , Gingiva/anatomy & histology , Periodontium/anatomy & histology , Epidemiology, Descriptive , Cross-Sectional Studies , Statistical Analysis , Cuspid , Dental Papilla/anatomy & histology , Observational Study , Incisor
14.
Article in English | LILACS, BBO | ID: biblio-1250441

ABSTRACT

ABSTRACT Objective: To assess the relationship of ɑ and ß angles of maxillary impacted canines with maxillary lateral incisor root resorption. Material and Methods: For this, 40 patients (between 11 and 45 years) with impacted maxillary canines presenting to a private orthodontic clinic were evaluated.20% of the cases were male and 80% were female. The ɑ and ß angles were measured on panoramic radiographs to determine the angulation of impacted canine. CBCT scans had been taken by ProMax 3D CBCT system were used to examine lateral root reorption. The relationship between the size of ɑ and ß angles of impacted maxillary canines and root resorption in the adjacent maxillary lateral incisor was analyzed using SPSS version 22. Results: The mean size of ɑ and ß angles had no significant correlation with the presence/absence, location, or severity of root resorption in the adjacent lateral incisor or the buccolingual position of impacted canine. The ɑ and ß angles in impacted maxillary canines cannot be used to determine the incidence or severity of root resorption in the adjacent lateral incisor. Conclusion: No significant association between ɑ and ß angles and incidence or severity of root resorption in the adjacent lateral incisor was found.


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Orthodontics, Interceptive , Root Resorption , Tooth, Impacted/diagnosis , Cone-Beam Computed Tomography/instrumentation , Incisor , Tooth, Unerupted , Radiography, Panoramic/instrumentation , Chi-Square Distribution , Cross-Sectional Studies/methods , Data Interpretation, Statistical , Statistics, Nonparametric , Cuspid , Iran
15.
Dental press j. orthod. (Impr.) ; 26(5): e212042, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1345934

ABSTRACT

ABSTRACT Introduction: Orthodontic retraction of the anterior teeth is indicated when the patient has a malocclusion with protrusion of the incisors. Several mechanics are indicated to perform this retraction. Objective: The objective of this study was to compare the strains generated by four different types of retraction mechanics along the roots of the anterior teeth. Methods: A photoelastic model simulating an arch with first premolars extraction was made. Sixty retraction archwires were prepared, including fifteen for each type of mechanics evaluated: sliding, teardrop loop spring, T-loop spring and double key loop archwire. The strains were observed in two perspectives: occlusal and oblique. In the occlusal perspective, strains were compared among the six anterior teeth. From the oblique perspective, strains were compared among the thirds of the left canine root. Results: In the occlusal perspective, the teardrop loop spring mechanics presented greater strains, followed by T-loop spring, double key loop archwire and sliding mechanics. In all mechanics, strains were more concentrated in the canines than in the incisors. From the oblique perspective, the teardrop loop mechanics generated greater strains in the cervical regions of the canine, and in the apical regions, no differences were found in strains among the four types of mechanics. In the same mechanics, greater strains were present in the cervical zones. Conclusion: The teardrop loop spring retraction mechanic presented the greatest mean strain, and the sliding retraction mechanic presented the lowest mean strain on the root of anteroinferior teeth in the occlusal and oblique perspectives.


RESUMO Introdução: A retração ortodôntica dos dentes anteriores é indicada quando o paciente apresenta má oclusão com vestibularização dos incisivos. Diferentes mecânicas são indicadas para realizar essa retração. Objetivo: O objetivo do presente estudo foi comparar as tensões geradas por quatro diferentes tipos de mecânicas de retração nas raízes dos dentes anteriores. Métodos: Um modelo fotoelástico foi confeccionado simulando uma arcada com os primeiros pré-molares extraídos. Foram preparados 60 arcos de retração, sendo quinze para cada tipo de mecânica avaliada: deslizamento, alça de Bull, alça em T e arco de dupla chave. As tensões foram observadas em duas perspectivas: oclusal e oblíqua. Na vista oclusal, as tensões foram comparadas entre os seis dentes anteriores. Na vista oblíqua, as tensões foram comparadas entre os terços radiculares do canino esquerdo. Resultados: Na vista oclusal, a mecânica com alça de Bull apresentou maiores tensões, seguida da alça em T, arco de dupla chave e mecânica de deslizamento. Em todas as mecânicas, as tensões se concentraram mais nos caninos do que nos incisivos. Na vista oblíqua, a mecânica com alça de Bull gerou maiores tensões nas regiões cervicais dos caninos; nas regiões apicais, não houve diferenças nas tensões entre os quatro tipos de mecânicas. Dentro de uma mesma mecânica, as maiores tensões estiveram presentes nas regiões cervicais. Conclusão: A mecânica de retração com alça de Bull apresentou a maior média de tensões, e a mecânica de retração por deslizamento apresentou a menor média de tensões na raiz dos dentes anteroinferiores, nas vistas oclusal e oblíqua.


Subject(s)
Humans , Tooth Movement Techniques , Malocclusion , Bicuspid , Biomechanical Phenomena , Incisor
16.
Article in English | WPRIM | ID: wpr-878408

ABSTRACT

OBJECTIVES@#To assess the treatment outcome of patients who completed their orthodontic treatment by using Andrews' six elements and the American Board of Orthodontic (ABO) objective grading system (OGS); to determine whether Andrews' six elements can be used as a new assessment system for patients who completed their orthodontic treatment.@*METHODS@#A total of 160 patients who completed their orthodontic treatment were included in the study. The participants were randomly selected from patients who completed their orthodontic procedures in Kunming Medical University Affiliated Stomatological Hospital during the period of 2015 to 2019. The retrospective completed cases were examined in accordance with the Andrews' six elements and ABO measuring scales. Scores were assigned to each tooth in each category. All the measurement items in both evaluation criteria, the composite category score, and the total score were calculated. The passing and potential passing rates of the completed cases were compared with two measuring scales via the Chi-square test.@*RESULTS@#The passing rate for the evaluation of cases by using the Andrews' six elements measuring scale was 83.8%, and that for the evaluation of cases by using the ABO measuring scale was 86.3%. The differences in achieving the standard between the cases of Andrews' six elements and ABO-OGS via the Chi-square test were statistically insignificant (@*CONCLUSIONS@#The performance of Andrews' six elements was comparable with that of ABO-OGS in assessing the treatment outcome of patients who completed their orthodontic treatment. Andrews' six elements can be used as a new system for assessing the treatment outcome of patients who completed their orthodontic treatment. It demonstrated particular advantage in controlling facial profile, and had just completed material of patients who completed their orthodontic treatment it can measure. The Andrews' six elements measuring scale is convenient to disseminate and use.


Subject(s)
Dental Care , Humans , Incisor , Orthodontics , Retrospective Studies , Treatment Outcome
17.
Article in English | WPRIM | ID: wpr-887763

ABSTRACT

Long-term missing teeth can lead to alveolar bone loss in the edentulous area. Guided bone regeneration (GBR) is a bone augmentation method. It is widely used in clinical practice and broadens the indications of orthodontic treatment to a certain extent. This article reports a case of an adult patient with edentulous space in the maxillary central incisor, which was successfully closed through orthodontic treatment combined with GBR. This study will provide a re-ference for future clinical work.


Subject(s)
Adult , Alveolar Bone Loss , Anodontia , Bone Regeneration , Humans , Incisor , Maxilla , Orthodontic Space Closure
18.
Braz. oral res. (Online) ; 35: e035, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1153620

ABSTRACT

Abstract The aim of this study was to investigate the segregation patterns of molar incisor hypomineralization (MIH) in families, given the evidence that its etiology is influenced by genetics. Clinically, MIH may be detected in parents and/or siblings of MIH-affected children. Our study included children with at least one first permanent molar affected by MIH (proband) and their first-degree relatives (parents and siblings). The participants were examined clinically to detect MIH, according to the European Academy of Paediatric Dentistry criteria (2003). A total of 101 nuclear families (391 individuals) were studied. Proband diagnosis was followed by MIH classification of the subject, his parents and siblings, as affected, unaffected, or unknown. Segregation analysis was performed using the multivariate logistic regression model of the Statistical Analysis for Genetic Epidemiology package, and segregation models (general transmission, environmental, major gene, dominant, codominant and recessive models). The Akaike information criterion (AIC) was used to evaluate the most parsimonious model. In all, 130 affected individuals, 165 unaffected individuals, and 96 unknown individuals were studied. Severe MIH was found in 50.7% of the cases. A segregation analysis performed for MIH revealed the following different models: environmental and dominance (p = 0.05), major gene (p = 0.04), codominant (p = 0.15) and recessive models (p = 0.03). According to the AIC values, the codominant model was the most parsimonious (AIC = 308.36). Our results suggest that the codominant model could be the most likely for inheriting MIH. This result strengthens the evidence that genetic factors, such as multifactorial complex defect, influence MIH.


Subject(s)
Humans , Child , Dental Enamel Hypoplasia/genetics , Dental Enamel Hypoplasia/epidemiology , Incisor , Prevalence , Inheritance Patterns , Molar
19.
Arq. odontol ; 57: 260-265, jan.-dez. 2021. tab
Article in English | LILACS, BBO | ID: biblio-1352621

ABSTRACT

Aim:To evaluate the impact of the recording of teeth whose clinical conditions rarely vary (anterior teeth and third molars) in inter-examiner agreement measurements. Methods:Clinical data from 56 schoolchildren, 12 years of age, previously collected by two examiners, according to the "Oral Health Surveys: basic methods" codes and criteria, were analyzed in the present study. The effects from including/excluding such teeth upon reproducibility were measured by general percentage agreement (GPA) and Kappa statistics (к) performances. Results: The exclusion of anterior teeth associated with the inclusion of third molars produced a decrease in GPA that was simultaneous to an increase in the weighted Kappa (nominal data) and simple (dichotomous data) values. The incorrect inclusion of third molars (GPA = 100%; к = + 1) in the reproducibility measurement artificially increased the inter-examiner Kappa values. Conclusion: The inclusion/exclusion of anterior teeth and third molars, seeking a more reliable agreement among examiners, can have a positive or negative impact on the measured reproducibility values. A clear warning about the impact of including third molars in the reproducibility measurement, in the 12 years old age group, should be performed in "Oral Health Surveys: basic methods" and similar manuals.


Objetivo: Avaliar o impacto do registro de dentes anteriores e terceiros molares, cujas condições clínicas pouco variam, sobre as mensurações de concordância inter-examinadores. Métodos: Dados clínicos de 56 escolares de 12 anos de idade, previamente coletados por 2 examinadores, segundo os códigos e critérios expressos no "Levantamentos em Saúde Bucal: métodos básicos" foram analisados neste estudo. Os efeitos da inclusão/exclusão destes dentes sobre a concordância inter-examinadores foram mensurados calculando-se a porcentagem geral de concordância (GPA) e estatística Kappa (к). Resultados:A inclusão de terceiros molares aumentou a GPA para dados dicotomizados ou não. A exclusão de dentes anteriores diminuiu a GPA para dados dicotomizados ou não. Quando associada à inclusão de terceiros molares, sob perfeita concordância (к = +1), os valores de Kappa foram artificialmente aumentados tanto para dados dicotomizados quanto não-dicotomizados. Conclusão: A inclusão/exclusão de dentes anteriores e/ou de terceiros molares, no sentido de se evidenciar melhor as discordâncias entre examinadores, podem impactar positiva ou negativamente sobre a fidedignidade da reprodutibilidade mensurada. Uma advertência clara sobre o impacto da inclusão dos dentes terceiros molares no cálculo da reprodutibilidade, para a faixa etária de 12 anos, deveria estar presente no "Levantamentos em Saúde Bucal: métodos básicos" e manuais semelhantes.


Subject(s)
Humans , Child , DMF Index , Dental Caries , Incisor , Molar, Third , Oral Health , Reproducibility of Results , Dental Care for Children
20.
J. appl. oral sci ; 29: e20210199, 2021. tab, graf
Article in English | LILACS | ID: biblio-1340100

ABSTRACT

Abstract Objective To assess craniofacial changes from early adulthood to the seventh decade of life in individuals with normal occlusion. Methodology The sample comprised lateral cephalograms of 21 subjects with normal occlusion (11 male, 10 female), taken at 17 (T1) and 61 years of age (T2). Anteroposterior and vertical maxillomandibular relationships, and dentoalveolar and soft tissue changes were analyzed. Interphase comparisons were performed using paired t-tests. Differences between sexes, and subgroups with and without tooth loss were evaluated using t-tests (p<0.05). Results Maxillary and mandibular anterior displacement, and facial and ramus height increased from T1 to T2. Maxillary molars showed significant mesial angulation. Maxillary and mandibular molars, and mandibular incisors developed vertically during the evaluation period. Soft tissue changes included a decrease of the nasolabial angle, upper and lower lip retrusion, decrease of upper lip thickness and increase of the lower lip and soft chin thickness. Maxillary incisor exposure by the upper lip decreased 3.6 mm in 40 years. Males presented counterclockwise rotation of the mandible, whereas females showed mandibular clockwise rotation and backward displacement of the chin. The group with tooth loss showed a greater increase of the posterior facial height and ramus height. Conclusion We observed aging changes in dentoskeletal structures and soft tissue, as well as sexual differences for craniofacial changes during the maturational process. Subjects with multiple tooth losses showed a greater increase in mandibular ramus height.


Subject(s)
Humans , Female , Adolescent , Adult , Face/anatomy & histology , Mandible , Aging , Cephalometry , Incisor , Maxilla
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