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1.
Dental press j. orthod. (Impr.) ; 26(4): e2119360, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1339804

ABSTRACT

ABSTRACT Introduction: Orthodontists have been using clear aligners to treat malocclusions, and one potential effect of treatment with orthodontic aligners is the intrusion and/or resists extrusion of the posterior teeth. This "bite-block effect" is primarily anecdotal due to the frequent occurrence of posterior open bites in patients after clear aligner therapy. Objective: The purpose of this study was to compare changes promoted by clear aligners and traditional fixed appliances in cephalometric measurements of the vertical dimension and molar position in adult patients with Class I malocclusion treated with non-extraction. Methods: Pre- and post-treatment lateral cephalometric radiographs of adult patients treated with either clear aligners (n=44) or traditional fixed appliances (n=22) were selected for retrospective analysis. Eight interval measurements and one nominal measurement were evaluated: anterior overbite (OB), mandibular plane angle related to cranial base (SN_MP) and related to Frankfort (FMA), lower molar height (L6H) and upper molar height (U6H), palatal plane to mandibular plane angle (PP_MP), lower facial height (LFH), total facial height (TFH), and posterior open bite (Posterior_OB). A single evaluator traced all cephalographs, and changes in select measures of the vertical dimension were compared within and between groups. Results: OB decreased (1.15 mm) and L6H increased (0.63 mm) in the traditional fixed appliance group. Mandibular plane angles (related to cranial base and to Frankfort) increased (0.43° and 0.53°, respectively) in the clear aligner group, but just FMA showed significant difference between groups (difference of 0.53°). LFH and TFH increased (ranging from 0.52 mm to 0.80 mm) in both groups, with no differences between treatment modality. Presence of visible posterior open bite significantly increased over the course of treatment. OB, FMA and L6H exhibited an interaction between treatment stage (pre- and post-treatment) and modality (clear aligner therapy and traditional fixed appliances), but no interaction among these three variables was found. Conclusions: The evidence does not support the theory that clear aligner therapy produces better vertical dimension control than traditional fixed appliances. Traditional fixed appliance therapy slightly extruded the lower molar, and clear aligner therapy produced a slightly mandibular backward rotation.


RESUMO Introdução: Ortodontistas têm usado os alinhadores transparentes para tratar más oclusões, e um potencial efeito desse tratamento é a intrusão e/ou resistência à extrusão dos dentes posteriores. Esse efeito de "bloco de mordida" é principalmente empírico, devido à ocorrência frequente de mordidas abertas posteriores em pacientes após a terapia com alinhadores transparentes. Objetivo: O objetivo do presente estudo foi comparar as mudanças promovidas pelos alinhadores transparentes e aparelho fixo convencional nas medidas cefalométricas de dimensão vertical e posição do molar em pacientes adultos com má oclusão de Classe I tratados sem exodontias. Métodos: Radiografias cefalométricas laterais pré- e pós-tratamento de pacientes adultos tratados com alinhadores transparentes (n=44) ou com aparelho fixo tradicional (n=22) foram selecionadas para uma análise retrospectiva. Oito medidas de intervalo e uma medida nominal foram avaliadas: trespasse vertical anterior (OB), ângulo do plano mandibular em relação à base do crânio (SN_MP) e em relação ao Plano de Frankfurt (FMA), altura do molar inferior (L6H) e altura do molar superior (U6H), ângulo do plano palatal ao plano mandibular (PP_MP), altura facial inferior (LFH), altura facial total (TFH) e mordida aberta posterior (Posterior_OB). Um único avaliador fez todos os traçados cefalométricos, e as mudanças nas medidas da dimensão vertical foram comparadas intra e intergrupos. Resultados: OB reduziu (1,15 mm) e L6H aumentou (0,63 mm) no grupo de aparelho fixo tradicional. Os ângulos do plano mandibular (em relação à base do crânio e ao plano de Frankfurt) aumentaram (0,43° e 0,53°, respectivamente). No grupo dos alinhadores invisíveis, apenas o FMA apresentou diferença significativa entre os grupos (diferença de 0,53º). LFH e TFH aumentaram (variando de 0,52 mm a 0,80 mm) em ambos os grupos, sem diferenças entre as modalidades de tratamento. A presença de uma mordida aberta posterior visível aumentou significativamente durante o curso do tratamento. OB, FMA e L6H exibiram interação entre o estágio do tratamento (pré- e pós-tratamento) e a modalidade (terapia com alinhadores invisíveis ou aparelho fixo tradicional), porém não foi encontrada interação entre essas três variáveis. Conclusões: A evidência não suporta a teoria de que a terapia com alinhadores invisíveis produz melhor controle da dimensão vertical do que o aparelho fixo. O tratamento com aparelhagem fixa extruiu ligeiramente o molar inferior, e o tratamento com alinhadores invisíveis produziu uma ligeira rotação posterior da mandíbula.


Subject(s)
Orthodontic Appliances, Removable , Malocclusion, Angle Class II , Vertical Dimension , Cephalometry , Retrospective Studies , Orthodontic Appliances, Fixed , Mandible , Molar/diagnostic imaging
2.
Rev. cuba. estomatol ; 57(4): e2989, Oct.-Dec. 2020. tab, graf
Article in Spanish | LILACS, CUMED | ID: biblio-1144449

ABSTRACT

Resumen Introducción: La dimensión vertical oclusal en algunos casos se altera y para predecirla se suelen utilizar métodos, tanto subjetivos como objetivos y entre los que se encuentran los antropométricos. Objetivo: Evaluar la correlación entre la longitud lineal del pabellón auricular y la dimensión vertical en jóvenes dentados. Métodos: Se evaluaron 47 estudiantes a nivel de la longitud vertical del pabellón auricular (punto más superior al punto más inferior del lóbulo de la oreja), medición del canto exterior del agujero ocular al tragus y la dimensión vertical oclusal (situados en el punto subnasal y en el borde más prominente del mentón). Todas las mediciones se hicieron con un calibrador digital. Resultados: La dimensión vertical oclusal promedio fue de 65,68 ± 4,14 mm. La distancia promedio entre el canto externo del ojo al tragus derecho fue de 67 ± 3,52mm (correlación de r = 0,776; p < 0,01) mientras que en el lado izquierdo fue de 66,95 ± 3,98 mm (correlación de r = 0,733; p < 0,01). La distancia de la longitud del pabellón auricular en el lado derecho fue de 64,74 ± 4,47mm (correlación de r = 0,643; p < 0,01) mientras que en el lado izquierdo fue de 64,84 ± 4,46 mm (correlación de r = 0,657; p < 0,01). Conclusiones: Las medidas antropométricas de la longitud lineal del pabellón auricular derecho e izquierdo se correlacionó con la dimensión vertical oclusal así como la medición entre el canto externo del ojo al tragus también se correlación con la dimensión vertical oclusal(AU)


ABSTRACT Introduction: When occlusal vertical dimension becomes altered, as is sometimes the case, use should be made of subjective and objective methods, including those based on an anthropometric approach. Objective: Evaluate the correlation between linear ear length and vertical dimension in dentate young subjects. Methods: A total 47 students were evaluated for linear vertical ear length (from the highest to the lowest end of the earlobe), and measurements were taken from the outer edge of the ocular hole to the tragus and the vertical occlusal dimension (located at the subnasal point and the most prominent edge of the chin). All measurements were taken with a digital caliper. Results: Average vertical occlusal dimension was 65.68 ± 4.14 mm. Average distance from the outer edge of the eye to the right tragus was 67 ± 3.52 mm (r correlation = 0.776; p < 0.01), whereas on the left side it was 66.95 ± 3.98 mm (r correlation = 0.733; p < 0.01). Ear length distance was 64.74 ± 4.47 mm on the right side (r correlation = 0.643; p < 0.01) and 64.84 ± 4.46 mm on the left side (r correlation = 0.657; p < 0.01). Conclusions: Right and left linear ear length anthropometric measurements correlated with vertical occlusal dimension. The distance from the outer edge of the eye to the tragus also correlated with the vertical occlusal dimension(AU)


Subject(s)
Humans , Vertical Dimension , Anthropometry/methods , Ear Auricle
3.
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
4.
Rev. Ateneo Argent. Odontol ; 62(1): 13-23, jun. 2020. graf
Article in Spanish | LILACS | ID: biblio-1148125

ABSTRACT

El presente es un trabajo de investigación bibliográfica que busca establecer la posibilidad de utilizar las cefalometrías como elementos de diagnóstico pronóstico y elaboración de prótesis. Centra su objeto de estudio en encontrar y clasificar los factores morfológicos y funcionales que varían con los biotipos craneofaciales y que son de interés en la prostodoncia. La metodología empleada fue la revisión de la literatura histórica hasta la actualidad en la que se relacionan temas de prostodoncia a los biotipos craneofaciales. Si bien solo dos autores relacionaron la prostodoncia con los biotipos cráneo faciales, sí se encontraron varios temas de interés asociados directamente a la prostodoncia. Se clasificaron en temas de oclusión: Curva de Spee, plano de oclusión, movimientos mandibulares, dimensión vertical oclusiva y de especio libre interoclusal. Tema de maloclusiones. Tema de fuerza muscular. Tema variaciones morfológicas de procesos alveolares, corticales ósea y de la forma dentaría. Encontrándose para cada uno de ellos alguna correlación positiva con los distintos tipos faciales. De este estudio, se concluye que es necesario sistematizar el estudio de los conocimientos que puede aportar la cefalometría como una importante herramienta de diagnóstico al prostodoncista a partir de haberse encontrado variaciones muy importantes en los aspectos mencionados que hacen al interés de la rehabilitación prostodóncica (AU)


This Work is a bibliographic research that seeks to establish the use of cephalometries as elements of diagnosis prognostic and prosthesis elaboration. Its focus is to find and classify morphological and functional factors that vary with facial types which are of interest in prosthodontics. This was a review of the historical literature to date, in which prosthodontics are related to facial types. Although only two authors related prosthodontics to facial ypes, they did find several topics of interest directly associated with prosthodontics. They were classified into occlusion themes: Spee curve, occlusion plane, mandibular movements, occlusive vertical dimension and interocclusal free space. Malocclusion issue. Muscle strength theme. Morphological variations of alveolar processes, cortical bone and dental morphology. They found some positive correlation with the different facial types for each of them. From this study, it is concluded that it is necessary to systematize the study of cephalometries because they can provide to be an important diagnostic tool to the prosthodontist because there were found very important variations in the mentioned aspects that are of interest in prosthodontic rehabilitation (AU)


Subject(s)
Humans , Bite Force , Biotypology , Dental Prosthesis , Dental Occlusion , Malocclusion , Vertical Dimension , Dental Implants , Cephalometry , Mouth Rehabilitation
5.
Rev. cuba. estomatol ; 57(1): e2053, ene.-mar. 2020. graf
Article in Spanish | LILACS, CUMED | ID: biblio-1126490

ABSTRACT

RESUMEN Introducción: El edentulismo es la pérdida total o parcial de dientes, ocasionado principalmente por la caries y la enfermedad periodontal; es un proceso gradual que está comúnmente asociado al aumento de edad. Actualmente es considerado una discapacidad debido a la limitación funcional que ocasiona en quien lo presenta. Objetivo: Exponer el tratamiento rehabilitador multidisciplinario, funcional y estético en un paciente con desarmonías oclusales. Presentación del caso: Paciente masculino de 74 años, diagnosticado con edentulismo parcial bimaxilar, mediante examen clínico y radiológico. Se sometió a terapia periodontal generalizada, cirugía preprotésica, restauración de plano oclusal de forma directa e indirecta y rehabilitación bucal con prótesis removibles total superior y parcial inferior; lo cual le permitió recuperar funcionalidad, estética y autoestima. Conclusiones: El edentulismo desencadena alteración en el estado funcional y emocional del paciente. Un diagnóstico integral y plan de tratamiento multidisciplinario y ordenado desencadenó éxito en el presente caso(AU)


ABSTRACT Introduction: Edentulism is total or partial tooth loss mainly caused by dental caries and periodontal disease. It is a gradual process often associated to aging. At present edentulism is considered to be a disability, due to the functional limitations undergone by sufferers. Objective: Describe the multidisciplinary, functional and esthetic rehabilitation treatment provided to a patient with occlusal disharmony. Case presentation: A 74-year-old male patient was diagnosed with bimaxillary partial edentulism based on clinical and radiographic examination. The patient underwent generalized periodontal therapy, pre-prosthetic surgery, direct and indirect occlusal plane restoration, and oral rehabilitation with total upper and partial lower removable prostheses, as a result of which he recovered his functionality, esthetic appearance and self-esteem. Conclusions: Edentulism triggers changes in the functional and emotional state of patients. Comprehensive diagnosis and orderly multidisciplinary treatment led to success in the case herein presented(AU)


Subject(s)
Humans , Male , Aged , Periodontal Diseases/diagnosis , Dental Caries/therapy , Mouth Rehabilitation/methods , Vertical Dimension , Dental Prosthesis/methods , Esthetics
6.
Rev. ADM ; 77(1): 37-40, ene.-feb. 2020. ilus
Article in Spanish | LILACS | ID: biblio-1088035

ABSTRACT

Paciente femenina de ocho años y cuatro meses, con patrón esquelético de clase II severa y overjet de 10 mm, fue tratada con Bite-Block Céntrico como método de control vertical. Después de cinco meses de terapia con aparatología fija de primera fase se logró control vertical y reducción de las desviaciones de la clase esquelética. Posteriormente se continuó con tratamiento activo durante 18 meses, se dio de alta de la primera fase cuando los objetivos del tratamiento como alineación, nivelación, overbite y overjet fueron adecuados. Los registros postratamiento demostraron una buena estabilidad articular, oclusión funcional y una mejora en la estética facial. El montaje en céntrica postratamiento demuestra estabilidad condilar con el uso de Bite-Block Céntrico como método de control vertical (AU)


Female patient of eight years and four months, with skeletal pattern of severe class II and 10 mm overjet, was treated with Bite-Block Centric as a vertical control method. After five months of therapy with fixed appliances of the first phase, vertical control and reduction of the deviations of the skeletal class were achieved. Subsequently continued with active treatment for 18 months, was discharged from the first phase when the treatment objectives such as alignment, leveling, overbite and overjet appropriate. Post-treatment records showed good joint stability, functional occlusion and an improvement in facial aesthetics. The posttreatment centric assembly demonstrates condylar stability with the use of Centric Bite-Block as a vertical control method (AU)


Subject(s)
Humans , Female , Child , Vertical Dimension , Centric Relation , Orthodontic Appliances, Fixed , Patient Care Planning , Cephalometry , Dental Occlusion, Centric , Malocclusion, Angle Class II/therapy
7.
Article in Korean | WPRIM | ID: wpr-786592

ABSTRACT

The loss of posterior support and the abnormal jaw relation can cause pathologic findings. If deep bite patients with multiple missing teeth, can not have the stable posterior contact, the mandible moves posteriorly, and consequently the overjet and overbite get worse. And when the mandibular irregular occlusal plane is corrected, it is easier to have the bilateral balanced occlusion with the maxilla. So the treatment goal is to give proper posetrior support and establish appropriate anterior guidance, and ultimately provide improved mastication and esthetics recovery. In this case, a 68 year old man, having deep bite without posterior support was evaluated by the vertical dimesion decision flow-chart. An available prosthetic height, anterior occlusal relation such as overjet, overbite and the esthetic part such as facial height and the cephalometric analysis are the factors to be considered.


Subject(s)
Dental Occlusion , Esthetics , Humans , Jaw , Mandible , Mastication , Maxilla , Mouth Rehabilitation , Mouth , Overbite , Tooth , Vertical Dimension
8.
Article in English | WPRIM | ID: wpr-786590

ABSTRACT

With the evolution of the computer-aided design/computer-aided manufacturing (CAD/CAM) technology, the intraoral scanners are playing an increasingly important role, as they are the first step towards a completely digital workflow. The CAD/CAM double scanning technique has been used to transfer the information from provisional restorations to definitive restorations. In this case, a 67-year-old male with esthetically compromised anterior teeth, generalized severe attrition of teeth, and reduced vertical dimension was treated with full mouth rehabilitation including a re-establishment of the lost vertical dimension of occlusion assisted by the crown lengthening procedure. The provisional restorations were fabricated using an intraoral scanner and the CAD/CAM double scanning technique. After the period of adaption, the definitive monolithic zirconia restorations were delivered. The CAD/CAM double scanning technique successfully transferred the occlusal and morphological characteristics, obtained from the provisional restorations, to the definitive restorations.


Subject(s)
Aged , Crown Lengthening , Dentition , Humans , Male , Mouth Rehabilitation , Mouth , Tooth , Tooth Wear , Vertical Dimension
9.
J. oral res. (Impresa) ; 8(4): 282-289, nov. 5, 2019. tab, ilus, graf
Article in English | LILACS | ID: biblio-1145349

ABSTRACT

The alteration of the vertical dimension can deteriorate the facial harmony, and it can be measured through objective and subjective methods, although many of which are not reliable. Objective: Relate the anthropometric fingers length with the measurement of the vertical occlusal dimension (VOD). Material and Methods: Cross-sectional, observational study that included 114 students from the School of Dentistry with class I malocclusion and complete dentition. The VOD was evaluated as the measurement between the subnasal points and the mental point; anthropometric measures included the length of the fingers (from the most mesial fold to the most distal edge) and the distance projected between the thumb and the index finger. Results: The average VOD was 64.03±5.15mm. A correlation was found between the VOD and the index finger length (p<0.01, r=0.29), between the VOD and middle finger length (p<0.01, r=0.31) and correlation between the VOD and the length of the little finger (p<0.05, r=0.23). No correlation was found between the VOD and the ring finger lengths (p= 0.051) or thumb (p=0.12). Conclusions: The anthropometric measurements of the index finger, middle finger, little finger and the projection of the thumb on the index finger correlated with the length of the vertical occlusal dimension.


La alteración de la dimensión vertical puede deteriorar la armonía facial, su medición puede realizar a través de métodos objetivos y subjetivos; sin embargo muchos de ellos no son confiables. Objetivo: Relacionar las longitudes antropométricas de los dedos de la mano con la medida de la dimensión vertical oclusal (DVO). Material y Métodos: Estudio transversal, observacional que incluyó a 114 estudiantes de la Facultad de Odontología con maloclusión de clase I y dentición completa. La DVO fue evaluada como la medida entre los puntos subnasal al punto mentoniano; las medidas antropométricas incluyeron a la longitud de los dedos (desde su pliegue más mesial hasta su borde más distal) y la distancia proyectada entre el pulgar al índice. Resultados: La DVO promedio fue de 64,03±5,15mm. Se encontró correlación entre la DVO y la longitud del dedo índice (p<0,01; r=0,29), entre la DVO y la longitud del dedo medio (p<0,01; r=0,31) y correlación entre la DVO y la longitud del dedo meñique (p<0,05; r=0,23). No se encontró correlación entre la DVO y las longitudes de los dedos anular (p=0,051) y pulgar (p=0,12). Conclusiones: Las medidas antropométricas del dedo índice, medio, meñique y la proyección del dedo pulgar sobre el dedo índice se correlacionaron con la longitud de la dimensión vertical oclusal.


Subject(s)
Humans , Male , Female , Vertical Dimension , Anthropometry , Fingers/anatomy & histology , Peru , Cross-Sectional Studies , Dental Occlusion , Face/anatomy & histology
10.
Rev. Ciênc. Plur ; 5(2): 143-160, ago. 2019. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-1021780

ABSTRACT

Introdução:A Disfunção Temporomandibular (DTM) é uma condição bastante frequente na população mundial e a identificação de fatores causais, junto ao seu tratamento é de suma relevância para a qualidade de vida dos indivíduos.Objetivo:Objetivou-se por meio de uma revisão integrativada literatura de todos os tipos de estudos, avaliar se a alteraçãode dimensão vertical impacta no aparecimento das disfunções temporomandibulares.Método:As estratégias de busca foram realizadas nas bases de dados "Cochrane Library", "MEDLINE", "Web of Science", "Scopus", "LILACS", "Scielo" e "Google Acadêmico", utilizando os seguintes descritores e/ou palavras: "Temporomandibular Joint Disorders"; "Craniomandibular Disorders"; "Occlusion Vertical Dimension"; "Occlusion Vertical Dimensions"; "Vertical Dimension of Occlusion"; "Vertical Dimension".Resultados:Um total de 4 artigos foram incluídos nesta revisão.A maioria dos estudos demostram que na presença de uma DVO diminuída, o sistema estomatognático é capaz de adaptar-se, não provocando o aparecimento de DTM.Conclusões:Como conclusão, os resultados indicam que não há evidência científica suficiente que permita afirmar que a perda de dimensão vertical predispõe ao aparecimento de sinais e sintomas relacionados à disfunção temporomandibular (AU).


Introduction:TemporomandibularDysfunction (TMD) is a very frequent condition in the world population and the identification of causal factors, along with its treatment, is extremely relevant to the quality of life of the individuals.Objective:The aim of this study was to integrativereview the literature of all types of studies to assess whether loss of vertical dimension has an impact on the appearance of temporomandibular disorders.Methods:The search strategies were performed in the Cochrane Library, Medline, Web of Science, Scopus, Lilacs, Scielo and Google Scholar databases using the following descriptors and / or words : "Temporomandibular Joint Disorders"; "Craniomandibular Disorders"; "Occlusion Vertical Dimension"; "Occlusion Vertical Dimensions"; "Vertical Dimension of Occlusion"; "Vertical Dimension". Results:A total of 4 articles were included in this review. Most of the studies show that in the presence of a reduced OVD, the stomatognathic system is able to adapt, not provoking the appearance of TMD. Conclusions:In conclusion, the results indicate that there is insufficient scientific evidence to show that the loss of vertical dimension predisposes to the appearance of signs and symptoms related to temporomandibular dysfunction (AU).


Subject(s)
Temporomandibular Joint , Vertical Dimension , Temporomandibular Joint Dysfunction Syndrome , Dental Occlusion , Brazil , Surveys and Questionnaires , Scientific Integrity Review
11.
Braz. j. otorhinolaryngol. (Impr.) ; 85(4): 494-501, July-Aug. 2019. tab, graf
Article in English | LILACS | ID: biblio-1019575

ABSTRACT

Abstract Introduction: The face is the most important factor affecting the physical appearance of a person. In facial aesthetics, there is a specific mathematical proportion, which is called golden proportion, used to measure and analyse facial aesthetic qualities in population. Objectives: The aim of this study was to measure the facial soft tissue proportions which would help to constitute a standard for facial beauty and diagnose facial differences and anomalies and to compare these proportions to the golden proportion. Methods: One hundred and thirty-three (133) Turkish patients 18-40 years of age (61 females, 72 males) were involved in the study. Analysis of the photographs was performed by the same physician, and a software programme was used (NIH Image, version 1.62). Facial proportions were measured and differences from the golden proportions were recorded and grouped as normal (1.6-1.699), short (<1.6) and long (>1.699). Results: According to the facial analysis results, the trichion-gnathion/right zygoma-left zygoma was assessed: 33.1% of the patients were in normal facial morphology, 36.8% were in long facial morphology and 30.1% were in short facial morphology, according to this proportion. The trichion-gnathion/right zygoma-left zygoma proportion was significantly higher in males than females (p < 0.001). Statistically significant difference was noted in gender groups, according to the trichion-gnathion/right zygoma-left zygoma and the right lateral canthus-left lateral canthus/right cheilion-left cheilion proportions (p = 0.001, p = 0.028). Conclusion: Facial proportion assessments in relation to the golden proportion showed that a statistically significant difference was observed between gender groups. Long facial morphology was observed more in males (51.4%); normal (41%) and short (39.3%) facial morphology were more common in females. The measurements and proportions for facial balance in our study population showed that the facial width and height proportions deviated from the golden proportion.


Resumo Introdução: A face é o aspecto mais importante da aparência física de uma pessoa. Na estética facial, existe uma proporção matemática específica, chamada de proporção áurea. A proporção áurea é usada para medir e analisar as qualidades estéticas da face na população. Objetivo: Medir as proporções dos tecidos moles faciais que contribuem para o padrão da beleza facial, auxiliar a percepção e o diagnóstico das diferenças e anomalias faciais e comparar essas proporções com a proporção áurea. Método: Foram incluídos no estudo 133 pacientes turcos com 18 a 40 anos (61 mulheres, 72 homens). A análise das fotografias foi realizada pelo mesmo médico e um programa de software foi usado (NIH Image, versão 1.62). As proporções faciais foram medidas e as diferenças das proporções áureas foram registradas e agrupadas como normais (1,6-1,699), curtas (< 1,6) e longas (> 1,699). Resultados: De acordo com os resultados da análise facial, avaliou-se a proporção do tríquion-gnátio/zigoma direito-zigoma esquerdo e 33,1% dos pacientes apresentaram morfologia facial normal, enquanto 36,8% tinham morfologia facial longa e 30,1% morfologia facial curta, segundo essa proporção. A proporção do tríquion-gnátio/zigoma direito-zigoma esquerdo foi significantemente maior em homens do que em mulheres (p < 0,001). Uma diferença estatisticamente significante foi observada entre os sexos, de acordo com a proporção do tríquion-gnátio/zigoma direito-zigoma esquerdo e do canto lateral direito-canto lateral esquerdo/ângulo cantal direito- ângulo cantal esquerdo (p = 0,001, p = 0,028). Conclusão: A avaliação da proporção facial em relação à proporção áurea mostrou que houve diferença estatisticamente significante entre os sexos. A morfologia facial longa foi mais observada no sexo masculino (51,4%), a morfologia facial normal (41%) e a curta (39,3%) foram mais comuns no sexo feminino. As medidas e proporções para o equilíbrio facial em nossa população estudada mostraram que as proporções de largura e altura faciais se desviaram da proporção áurea.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Young Adult , Vertical Dimension , Cephalometry/methods , Face/anatomy & histology , Turkey , Sex Factors , Esthetics
12.
Rev. Odontol. Araçatuba (Impr.) ; 40(1): 13-18, jan.-abr. 2019. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-995147

ABSTRACT

O registro da relação maxilo-mandibular (RMM) é considerado um passo crítico na confecção de novas próteses totais (PT) pois exige uma precisão técnica capaz de permitir o seu reestabelecimento, de forma confortável e equilibrada com a musculatura oral. O registro é obtido em dois planos, um vertical e outro horizontal: o plano vertical é determinado pela dimensão vertical (DV) e o plano horizontal é estabelecido pela relação cêntrica (RC). Ambos recuperam o suporte labial, altura incisal, linha do sorriso e o corredor bucal de forma natural e personalizada. Esse registro pode ser obtido, iniciando pelo arco inferior, seguindo a fisiologia e anatomia orofacial. Nessa técnica, considerase três princípios fisiológicos: crista alveolar, situada sobre o rebordo alveolar, musculatura relacionada que determinará o corredor bucal e posição lingual do rodete e a linha úmida do lábio inferior que determinará a altura do rodete inferior. Dessa forma, este trabalho tem por objetivo descrever por meio de condução de caso clínico a técnica de restabelecimento da RMM em paciente edentado bimaxilar iniciando pelo arco inferior(AU)


The maxillo-mandibular relation (MMR) is considered a critical step in the preparation of new complete denture (CD), since it requires a technical precision capable of allowing its reestablishment, in a comfortable and balanced way with the oral musculature. The register is obtained in two planes, one vertical and one horizontal: the vertical plane is determined by the vertical dimension (VD) and the horizontal plane is established by the centric relation (CR). Both recover the lip support, incisal height, smile line and buccal corridor in a natural and personalized way. This record can be obtained, beginning with the lower arch, following the physiology and orofacial anatomy. In this technique, three physiological principles are considered: alveolar crest, located on the alveolar ridge, related musculature that will determine the buccal corridor and the lingual position of the wax rim and the humid line of the lower lip which will determine the height of the lower wax rim. Thus, this study aims to describe, by way of conducting a clinical case, the technique of restoration of RMM in a bimaxillary edentulous patient starting with the inferior arch(AU)


Subject(s)
Humans , Female , Adult , Denture, Complete , Jaw Relation Record , Vertical Dimension , Stomatognathic System , Jaw, Edentulous, Partially
13.
Article in Spanish | LILACS | ID: biblio-1003813

ABSTRACT

RESUMEN: Objetivo: Determinar la relación entre la distancia clínica Ojo / Tragus y la distancia craneométrica Ojo / Oreja. Materiales y Métodos: En un grupo de 100 individuos, 50 hombres y 50 mujeres, se realizaron dos medidas. Distancia desde pared anterior del canal auditivo externo a la esquina lateral de la órbita con el craneómetro de Knebelman y distancia surco tragus facial al ángulo externo del ojo con un pie de metro digital. A las medidas se les realizó análisis estadístico descriptivo y de Concordancia Bland & Altman. Resultados: Las distancias presentaron una diferencia promedio de -0,761 mm. en el total, -0,670 mm. en hombres, -0,852 mm. en mujeres. El análisis estadístico, arrojó concordancia solo en hombres, el análisis de la magnitud de sobre estimación estableció 2,34% en el total y 0,23% en mujeres. Con estos datos se modificó el factor de ajuste proporcional del método original. Conclusión: No existe una concordancia perfecta entre ambas distancias, pero el análisis de las sobre estimaciones nos permite modificar el método de Knebelman para su aplicación clínica sin Craneómetro, estableciendo que la distancia clínica surco tragus facial al ángulo externo del ojo menos 5 mm nos permite evaluar o establecer la Dimensión Vertical Oclusal.


Abstracts: Objective: to determine the relationship between the clinical distance Eye / Tragus and the cranial distance Eye / Ear. Materials and Methods: In a group of 100 individuals, 50 men and 50 women, two measurements were made. Distance from the anterior wall of the external auditory canal to the lateral corner of the orbit with the Knebelman craniometer and distance from the facial tragus furrow to the external angle of the eye with a digital meter foot. A descriptive and concordance statistical analysis of Bland & Atlman was carried out on these measures. Results: The distances showed a mean difference of -0.761 mm. in the total, -0.670 mm. in men, -0,852 mm. in women. Statistical analysis was concordant only in men. The magnitude analysis of overestimate established 2.34%in the total and 0.23% in women. With these data, the proportional adjustment factor of the original method was modified. Conclusion: There is no perfect agreement between the two distances, but the overestimates analysis allows us to modify the Knebelman method for its clinical application without Craniometer, establishing that the clinical distance from the facial tragus furrow to the external angle of the eye minus 5 mm. allows us to evaluate or establish the Vertical Occlusal Dimension.


Subject(s)
Humans , Male , Female , Orbit , Vertical Dimension , Cephalometry , Eye , Ear Auricle
14.
Article in English | LILACS, BBO | ID: biblio-1056827

ABSTRACT

Abstract Objective: To evaluate the relationship between mandibular shape, mandibular bone density, cortical bone thickness, and condylar volume and facial height using a cone-beam computed tomography (CBCT). Material and Methods: Fifteen female patients (16-25 years old) were included in this study. The following measurements were performed on CBCT radiographs; inter-canine and inter-molar width of the mandible at three vertical points (alveolar crest, apex and basal bone), mandibular cortical bone thickness in disto molar and canine sections, bone density of the mandibular body and condylar volume. Afterward, subjects were divided into short face, normal and long face groups according to the Frankfort-mandibular plane angle (FMA) measured on lateral cephalograms obtained from CBCTs. Data were analyzed using Pearson correlation, one-way ANOVA, and post-hoc analysis Results: The inter-canine width of the mandible at the apical point in long face subjects was greater than in the other groups. Likewise, the cortical bone thickness was significantly higher in long face patients compared to the short face and normal subjects. There was no statistically significant difference in mandibular density or condylar volume between patients with various vertical heights (p>0.1) Conclusion: Vertical growth pattern is correlated with mandibular morphology to some extent.


Subject(s)
Humans , Female , Adolescent , Adult , Vertical Dimension , Cone-Beam Computed Tomography/instrumentation , Mandible/growth & development , Cross-Sectional Studies/methods , Analysis of Variance , Data Interpretation, Statistical , Iran/epidemiology
15.
Article in Korean | WPRIM | ID: wpr-764436

ABSTRACT

This case report presents a closed hollow bulb obturator made by 3D printing for a maxillectomy patient. Final impression was taken according to the instructions and impression trays provided by the Magic denture™ system. Vertical dimension, facial appearance, and retention had been checked with the try-in denture. The try-in denture was corrected and adjusted to fulfill the demand of the patients, then these were reflected to the final design of the denture. The defect area was designed as a closed hollow bulb shape to reduce the weight and to provide uniform thickness of the denture. The patient satisfied with the esthetics and function of the denture.


Subject(s)
Clothing , Dentures , Esthetics , Humans , Magic , Printing, Three-Dimensional , Rehabilitation , Vertical Dimension
16.
Article in Chinese | WPRIM | ID: wpr-772700

ABSTRACT

OBJECTIVE@#The accuracy of the occlusion vertical dimensions of edentulous Han patients from Yunnan province was compared and analyzed on the basis of cone-beam computed tomography (CBCT)-synthesized cephalograms, closest speaking space method, and interocclusal distance.@*METHODS@#A database correlating the CBCT head lateral images of Han patients from Yunnan province with normal occlusal conditions was first constructed. Then, five edentulous Han patients aged 63-78 years old from Yunnan Province were selected. NNT.View software was used to measure and analyze hard tissue cephalometric radiographs that had been transformed by the CBCT marker. The radiographs were then combined with the normal population database for the assessment of occlusion vertical dimensions. The occlusion vertical dimensions determined on the basis of CBCT-synthesized cephalograms, the closest speaking space method, and the free-way space were analyzed.@*RESULTS@#The closest speaking space method was used as the standard control group, the differences between seven methods and the closest speaking space method were analyzed. The seven methods include free-way space method and six CBCT-synthesized cephalograms methods (N-ANS/ANS-Me, S-Go/N-Me, ANS-Gn/N-ANS, ANS-FH/Me-FH, ANS-Xi-Pm, and CA/LA). The seven methods were highly consistent with the closest speaking space method (intraclass correlation coefficient>0.986). The absolute values of the differences between the methods of free-way space, N-ANS/ANS-Me, S-Go/N-Me and the closest speaking space method were lower than those of the other four groups (P<0.05), while the differences between ANS-FH/Me-FH and the closest speaking space method was higher than those other groups (P<0.05).@*CONCLUSIONS@#CBCT-synthesized cephalograms, with the exception of ANS-FH/Me-FH, can provide references for the clinical evaluation of the occlusion vertical dimensions of patients with edentulous jaws.


Subject(s)
Aged , Cephalometry , China , Cone-Beam Computed Tomography , Humans , Imaging, Three-Dimensional , Middle Aged , Mouth, Edentulous , Vertical Dimension
17.
Article in Korean | WPRIM | ID: wpr-761454

ABSTRACT

Increased anterior teeth mastication following posterior teeth loss leads to greater anterior occlusal force. It may cause greater attrition of anterior teeth, traumatic force occlusion (TFO), also often followed by antagonist extrusion and occlusal disharmony. This clinical report describes the treatment for a 67-year-old female patient diagnosed with loss of both maxillary and left mandibular posterior teeth, severe attrition of maxillary and mandibular anterior teeth and extrusion of multiple teeth. A diagnostic cast was mounted on articular in centric relation (CR) position to evaluate vertical dimension (VD) and interspace. To provide adequate space for the prosthetic reconstructions, VD was increased by 3 mm on the anterior pin. And then diagnostic wax-up was completed upon that VD. Wax-up was converted to provisional restorations and verified in the patient's mouth and the final restorations were delivered. Clinical follow up examination held 3 months after temporary restoration owing to changes in vertical dimension revealed proper function in mastication without evidence of temporo-mandibular joint (TMJ) disorders. This clinical report presents successfully restoring severe attrition case with increasing vertical dimension resulting in satisfaction in esthetics and function.


Subject(s)
Aged , Bite Force , Centric Relation , Esthetics , Female , Follow-Up Studies , Humans , Joints , Mastication , Mouth , Tooth , Vertical Dimension
18.
Article in Korean | WPRIM | ID: wpr-761451

ABSTRACT

Excessive tooth wear can cause irreversible damage to the occlusal surface and can alter the anterior occlusal relationship by destroying the structure of the anterior teeth needed for esthetics and proper anterior guidance. The anterior deep bite is not a morbid occlusion by itself, but it may cause problems such as soft tissue trauma, opposing tooth eruption, tooth wear, and occlusal trauma if there are no stable occlusal contacts between the lower incisal edge against its upper lingual surface. The most important goal of treatment is to form stable occlusal contact in centric relation. In this case report, patients with decrease in vertical dimension and anterior deep bite due to maxillary posterior tooth loss and excessive tooth wear were treated full mouth rehabilitation with increased vertical dimension to regain the space for restoration and improve anterior occlusal relationship and esthetics. The functional and aesthetic problems of the patient could be solved by the equal intensity contact of all the teeth in centic relation (CR), anterior guidance in harmony with the functional movement, and restoration of the wear surface beyond the enamel range.


Subject(s)
Centric Relation , Dental Enamel , Esthetics , Humans , Mouth Rehabilitation , Mouth , Overbite , Tooth Eruption , Tooth Loss , Tooth Wear , Tooth , Vertical Dimension
19.
Article in Korean | WPRIM | ID: wpr-761445

ABSTRACT

As digital dentistry technology is being developed, it is being used in various ways. This case covers how digital dentistry technology is being applied on the treatment of patients with loss of vertical dimension due to worn dentition and multiple loss of teeth. The loss of vertical dimension was carefully assessed and recovered, and implants were placed with surgical guides, designed considering the final restoration. The movement of the mandibular was measured with the electronic instrument for recording mandibular movement. Wax-up process was done with Naturgemäße Aufwachs-Technik (N.A.T.) and Natural functional reconstruction (N.F.R.). It was scanned, and the provisional restoration was fabricated using Computer-Aided-Design/Computer-Aided-Manufacturing (CAD/CAM) technology, and the adjustment process was done at the clinic to meet with the satisfaction both functionally and esthetically, and then, using double scanning and CAD/CAM technology, it was carried out as a final restoration. As a result, the patient obtained satisfying results, utilizing the benefits of digital dentistry technology and traditional methods.


Subject(s)
Dentistry , Dentition , Humans , Mouth Rehabilitation , Mouth , Tooth Loss , Tooth , Vertical Dimension
20.
Article in Korean | WPRIM | ID: wpr-761440

ABSTRACT

This study reported the treatment of a patient with excessive worn dentition and limited maxillo-mandibular space for restoration, utilizing the computer-aided design and computer-aided manufacturing (CAD/CAM) technology. After the thorough examination of the patient's occlusal vertical dimension (OVD), full mouth rehabilitation was planned with increase of the OVD. The patient was satisfied with the provisional restorations establishing the increased OVD. The horizontal and vertical data of the patient's jaw relation that the provisional restorations contained were transferred to the definitive metal ceramic fixed prostheses by double scanning and three-dimensional printing. After the fixed restorations were cemented to the abutments, electronic surveying and three-dimensional printing were used to fabricate metal frameworks for the patient's removable partial dentures. The mandibular definitive removable prostheses were delivered to the patient's mouth and the full mouth rehabilitation procedures were completed. The digital technologies used for this case produced fixed and removable restorations satisfactory in masticatory, phonetic and aesthetic functions to both the patient and the dental clinician.


Subject(s)
Ceramics , Computer-Aided Design , Dentition , Denture, Partial, Removable , Humans , Jaw , Mouth Rehabilitation , Mouth , Printing, Three-Dimensional , Prostheses and Implants , Tooth Wear , Vertical Dimension
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