Bilateral balanced occlusion compared to other occlusal schemes in complete dentures: A systematic review.

No consensus has been reached regarding the best occlusal scheme for making complete dentures. Thus, the purpose of this systematic review was to compare bilateral balanced occlusion (BBO) with other occlusal schemes (canine guidance, lingualised occlusion and zero degree) in complete dentures. The schemes were compared in terms of quality of life/satisfaction and masticatory performance. Two independent reviewers performed a comprehensive search of studies published in or before October 2017 using the PubMed/MEDLINE, Scopus and Cochrane Library databases. The search was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. The focused question was: "In conventional complete denture, is BBO better than lingualised occlusion, canine guidance and zero degree in terms of quality of life, patient satisfaction and masticatory performance/muscle activity?" Seventeen studies were selected for analysis. In total, there were 492 patients with a mean age of 64.78 years and a mean follow-up duration of 2.96 months (range: 1-6 months). All studies compared BBO with the other occlusal schemes. Eleven studies evaluated the influence of the occlusal scheme designs on quality of life and satisfaction, and 8 studies evaluated masticatory performance and muscle activity between BBO and the other occlusion schemes. The present systematic review indicated that BBO does not confer better quality of life/satisfaction or masticatory performance and muscle activity. Thus, lingualised occlusion can be considered a predictable occlusal scheme for complete dentures in terms of quality of life/satisfaction and masticatory performance, while canine guidance can be used to reduce muscular activity.

Standard of disocclusion in complete dentures supported by implants without free distal ends: analysis by the finite elements method.

OBJECTIVE: The occlusal patterns are key requirements for the clinical success of oral rehabilitation supported by implants. This study compared the stresses generated by the disocclusion in the canine guide occlusion (CGO) and bilateral balanced occlusion (BBO) on the implants and metallic infrastructure of a complete Brånemark protocol-type denture modified with the inclusion of one posterior short implant on each side. MATERIAL AND METHODS: A three-dimensional model simulated a mandible with seven titanium implants as pillars, five of them installed between the mental foramen and the two posterior implants, located at the midpoint of the occlusal surface of the first molar. A load of 15 N with an angle of 45° was applied to a tooth or distributed across three teeth to simulate the CGO or BBO, respectively. The commercial program ABAQUS® was used for the model development, before and after the processing of the data. The results were based on a linear static analysis and were used to compare the magnitude of the equivalent stress for each of the simulations. RESULTS: The results showed that the disocclusion in CGO generated higher stresses concentrated on the working side in the region of the short implant. In BBO, the stresses were less intense and more evenly distributed on the prosthesis. The maximum stress found in the simulation of the disocclusion in CGO was two times higher than that found in the simulation of the BBO. The point of maximum stress was located in the neck of the short implant on the working side. CONCLUSIONS: Under the conditions of this study, it was concluded that the BBO pattern was more suitable than CGO for the lower complete denture supported by implants without free distal ends.

Standard of disocclusion in complete dentures supported by implants without free distal ends: analysis by the finite elements method

OBJECTIVE: The occlusal patterns are key requirements for the clinical success of oral rehabilitation supported by implants. This study compared the stresses generated by the disocclusion in the canine guide occlusion (CGO) and bilateral balanced occlusion (BBO) on the implants and metallic infrastructure of a complete Brånemark protocol-type denture modified with the inclusion of one posterior short implant on each side. MATERIAL AND METHODS: A three-dimensional model simulated a mandible with seven titanium implants as pillars, five of them installed between the mental foramen and the two posterior implants, located at the midpoint of the occlusal surface of the first molar. A load of 15 N with an angle of 45° was applied to a tooth or distributed across three teeth to simulate the CGO or BBO, respectively. The commercial program ABAQUS® was used for the model development, before and after the processing of the data. The results were based on a linear static analysis and were used to compare the magnitude of the equivalent stress for each of the simulations. RESULTS: The results showed that the disocclusion in CGO generated higher stresses concentrated on the working side in the region of the short implant. In BBO, the stresses were less intense and more evenly distributed on the prosthesis. The maximum stress found in the simulation of the disocclusion in CGO was two times higher than that found in the simulation of the BBO. The point of maximum stress was located in the neck of the short implant on the working side. CONCLUSIONS: Under the conditions of this study, it was concluded that the BBO pattern was more suitable than CGO for the lower complete denture supported by implants without free distal ends.

Ajuste oclusal computarizado. Informe preliminar: 1ra. parte / Computerized occlusal adjustment. Preliminary report: 1st. part

En el artículo se analiza la problemática que se presenta en el ajuste oclusal de piezas implantosoportadas, debido a la falta de un ligamento periodontal que amortigue el impacto masticatorio. El movimiento de intrusión ausente en los implantes oseointegrados, produce una sobrecarga de los mismos cuando están próximos a dientes naturales. Se presenta un sistema computarizado que nos permite obtener la intensidad y ubicación de los contactos oclusales, con lo que logramos una distribución óptima de las fuerzas musculares (AU)

Ajuste oclusal computarizado. Informe preliminar: 1ra. parte / Computerized occlusal adjustment. Preliminary report: 1st. part

En el artículo se analiza la problemática que se presenta en el ajuste oclusal de piezas implantosoportadas, debido a la falta de un ligamento periodontal que amortigue el impacto masticatorio. El movimiento de intrusión ausente en los implantes oseointegrados, produce una sobrecarga de los mismos cuando están próximos a dientes naturales. Se presenta un sistema computarizado que nos permite obtener la intensidad y ubicación de los contactos oclusales, con lo que logramos una distribución óptima de las fuerzas musculares

Posiçäo das cabeças dos côndilos em relaçäo ás fossas mandibulares, verificadas pela tomografia lateral, corrigida após a individualizaçäo da curva de compensaçäo pelos métodos de Paterson e do anteparo anterior de resina / Position of the head of the condyle in relation to the mandibular fossae (glenoid fossae) verified by corrected axial tomography after individualization of the compensation curve by Paterson's method and by the method of the anterior shield of acrylic resin

Os autores estudaram as posiçöes das cabeças dos côndilos em relaçäo à fossa mandibular, no momento em que a mandíbula se encontrava em Relaçäo Central. Os resultados obtidos apontaram diferenças estatisticamente significantes entre o método de PATERSON e do Anteparo Anterior de Resina, sendo que, quando da tomada de RC após a individualizaçäo da curva de compensaçäo utilizando o anteparo anterior de resina, os côndilos encontravam-se mais voltados para a parede anterior e superior da fossa mandibular

Estabilidad mandibular en el tratamiento integral del paciente adulto / Mandibular stability in the comprehensive treatment of the adult patient

El propósito de este artículo es el de recopilar alguna información relacionada con los conceptos de estabilidad mandibular y relación céntrica. La relación céntrica es el término o concepto que más controversia ha generado en el campo odontológico; a pesar de su evolución histórica, ha constituido un aspecto importante en la corrección de los problemas oclusales. El paciente adulto que requiere tratamiento odontológico integral, por lo general presenta grandes discrepancias en su esquema oclusal. Con el tratamiento, el clínico busca reforzar, recuperar o preservar la oclusión fisiológica, pero nunca crear una nueva, de manera que durante el tratamiento, al finalizar éste y aún mucho más importante, después de él, se proporcione estabilidad mandibular para que el sistema estomatognático funcione adecuadamente

Análise dos guias de construçäo dos arcos ortodônticos / Analysis of the guides of contruction of the orthodontic archs

Neste trabalho propôs-se comparar arcos ideais entre si, construídos cada um sobre alguns diagramas selecionados, entre os mais difundidos, tomando como base os modelos de um indivíduo dotado de oclusäo normal, ótima estética facial, perfeita fisiologia, procurando o arco ideal que melhor se aproximou do modelo da oclusäo normal. O arco ideal foi confeccionado tendo como guia de construçäo o próprio modelo, pois é certamente a aproximaçäo mais simples, que näo introduz nenhuma construçäo artificial. Respeita-se o indivíduo através do seu próprio equilíbrio morfofuncional

Influência da linha intermaxilar na curva de compensaçäo: estudo in vitro / The influence of the inter maxillary line on the compensation curve: an in vitro study

Na área de Prótese Total, é fundamental a utilizaçäo de articuladores com recursos, uma vez que, com a avulsäo dos dentes, quase todas as referências maxilomandibulares desaparecem, permanecendo, praticamente, a articulaçäo temporomandibular e a linha intermaxilar. Sendo a oclusäo balanceada um dos requisitos para a estabilidade das próteses totais, os autores estudaram no articulador a influência das linhas intermaxilares na conformaçäo da curva de compensaçäo pela técnica de Paterson. Os resultados obtidos permitiram concluir que a linha intermaxilar influi inversamente na curva de Monson e näo influi na curva de Spee

Ajuste oclusal das restauraçöes com resinas compostas em dentes anteriores: objetivos e técnica / Occlusal adjustment of composite resins restaurations of anterior teeth: objectives and technique

Este trabalho relata os objetivos e a técnica do ajuste oclusal das restauraçöes com resinas compostas em dentes anteriores, para que as relaçöes oclusais sejam restabelecidas em harmonia com os demais dentes e com a fisiologia do sistema mastigatório

Relaçöes oclusais na ceroplastia e no ajuste intra-oral das restauraçöes metálicas fundidas do tipo "onlay" / Occlusal relation in ceroplasty and intra-oral adjustment of metallic restauration of the \"onlay\" type

Este trabalho relata os objetivos da reconstruçäo oclusal do padräo de cera das restauraçöes metálicas fundidas do tipo "onlay" e os cuidados que devem ser observados durante os ajustes intra-orais, para que as restauraçöes mantenham a estabilidade e a harmonia oclusal

Enfoque terapéutico en patología funcional de pacientes desdentados con osteoartritis temporomandibular / Therapeutical aspects in functional pathology of edentulous patients with temporomandibular osteoarthritis

Entregado los fundamentos de osteoartritis temporomandibular, se procede a describir el enfoque terapéutico empleado en los casos de pacientes desdentados, para cumplir los objetivos de la eliminación de los procesos inflamatorios, el logro de posiciones de centricidad mandibular neuromuscular y la eliminación de los efectos traumatógenos de la ATM. Se destaca el empleo y procedimientos de uso de férulas oclusales y prótesis de trabajo que posibilitan la estabilizacion de las relaciones máxilo-mandibulares en áreas de centricidad al armonizar las posiciones de MIC (máxima intercuspidación) y PMC (posición muscular céntrica). Se describen los métodos de tratamiento y se enfatiza en las relaciones máxilo mandibulares neuromusculares como punto de partida para dar estabilidad definitiva a la rehabilitación oral correspondiente, describiendo el procedimiento para alcanzar tales logros

[An aide to constructional bite adjustment]. / Konstrukciós harapásbeállítás segédeszköze.

Aim of the method is to facilitate the adjusting of constructional bite ceasing the constraint position of the jaw by means of air introduced from the exterior auditory meatus and water chargeable rubber ear plugs, respectively.