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A F Sutton - One of the best experts on this subject based on the ideXlab platform.
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aesthetic possibilities in removable prosthodontics part 2 start with the face not the teeth when rehearsing lip support and tooth positions
British Dental Journal, 2018Co-Authors: J N Besford, A F SuttonAbstract:Even dentures exhibiting superb aesthetics are of no use if they visibly move during speech and social intercourse. In this, the second paper of three on removable denture aesthetics, we describe impression making and shaping the Wax occlusal record Rims. Not only are the impressions important for producing dentures with maximum retention, stability and support, but their extensions and the thickness of their borders have a decisive influence on lip support and profile. This article shows how the contours of the definitive impressions and the Wax Rims are developed so as to prescribe the overall form of the replacement gums and teeth. Properly trimmed Rims are in essence an early three-dimensional rehearsal, an opportunity for developing the patient's preferred lip support and natural positioning of the denture teeth at subsequent stages. They can also give an early indication of what speech will be like with the new dentures. Without this 3D clinical information, laboratory technicians have to guess where to put the teeth and have little option but to fall back on the stereotypes of their textbook training.
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Aesthetic possibilities in removable prosthodontics. Part 2: start with the face not the teeth when rehearsing lip support and tooth positions
British Dental Journal, 2018Co-Authors: J N Besford, A F SuttonAbstract:Even dentures exhibiting superb aesthetics are of no use if they visibly move during speech and social intercourse. In this, the second paper of three on removable denture aesthetics, we describe impression making and shaping the Wax occlusal record Rims. Not only are the impressions important for producing dentures with maximum retention, stability and support, but their extensions and the thickness of their borders have a decisive influence on lip support and profile. This article shows how the contours of the definitive impressions and the Wax Rims are developed so as to prescribe the overall form of the replacement gums and teeth. Properly trimmed Rims are in essence an early three-dimensional rehearsal, an opportunity for developing the patient's preferred lip support and natural positioning of the denture teeth at subsequent stages. They can also give an early indication of what speech will be like with the new dentures. Without this 3D clinical information, laboratory technicians have to guess where to put the teeth and have little option but to fall back on the stereotypes of their textbook training. Describes impression making to maximise retention, stability and soft tissue support by managing flange thickness. Describes shaping the Wax occlusal record Rims to prescribe appropriate lip support and natural tooth positions. Demonstrates the shape and extension of dentures giving optimum aesthetics.
J N Besford - One of the best experts on this subject based on the ideXlab platform.
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aesthetic possibilities in removable prosthodontics part 2 start with the face not the teeth when rehearsing lip support and tooth positions
British Dental Journal, 2018Co-Authors: J N Besford, A F SuttonAbstract:Even dentures exhibiting superb aesthetics are of no use if they visibly move during speech and social intercourse. In this, the second paper of three on removable denture aesthetics, we describe impression making and shaping the Wax occlusal record Rims. Not only are the impressions important for producing dentures with maximum retention, stability and support, but their extensions and the thickness of their borders have a decisive influence on lip support and profile. This article shows how the contours of the definitive impressions and the Wax Rims are developed so as to prescribe the overall form of the replacement gums and teeth. Properly trimmed Rims are in essence an early three-dimensional rehearsal, an opportunity for developing the patient's preferred lip support and natural positioning of the denture teeth at subsequent stages. They can also give an early indication of what speech will be like with the new dentures. Without this 3D clinical information, laboratory technicians have to guess where to put the teeth and have little option but to fall back on the stereotypes of their textbook training.
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Aesthetic possibilities in removable prosthodontics. Part 2: start with the face not the teeth when rehearsing lip support and tooth positions
British Dental Journal, 2018Co-Authors: J N Besford, A F SuttonAbstract:Even dentures exhibiting superb aesthetics are of no use if they visibly move during speech and social intercourse. In this, the second paper of three on removable denture aesthetics, we describe impression making and shaping the Wax occlusal record Rims. Not only are the impressions important for producing dentures with maximum retention, stability and support, but their extensions and the thickness of their borders have a decisive influence on lip support and profile. This article shows how the contours of the definitive impressions and the Wax Rims are developed so as to prescribe the overall form of the replacement gums and teeth. Properly trimmed Rims are in essence an early three-dimensional rehearsal, an opportunity for developing the patient's preferred lip support and natural positioning of the denture teeth at subsequent stages. They can also give an early indication of what speech will be like with the new dentures. Without this 3D clinical information, laboratory technicians have to guess where to put the teeth and have little option but to fall back on the stereotypes of their textbook training. Describes impression making to maximise retention, stability and soft tissue support by managing flange thickness. Describes shaping the Wax occlusal record Rims to prescribe appropriate lip support and natural tooth positions. Demonstrates the shape and extension of dentures giving optimum aesthetics.
Lopes, Michelle Cristina - One of the best experts on this subject based on the ideXlab platform.
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Effect of monomer content in the monomer-polymer proportion on complete denture teeth displacement
[s.n.], 2018Co-Authors: Lopes, Michelle CristinaAbstract:Orientador: Rafael Leonardo Xediek ConsaniDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de PiracicabaResumo: O propósito neste estudo foi verificar a movimentação linear de dentes em prótese total superior confeccionada em resina acrílica, com conteúdo de monômero na proporção monômero-polímero indicado pelo fabricante, com 25% de excesso e com 25% a menos, nas técnicas de polimerização convencional e por microondas. Foram confeccionados 30 modelos em gesso pedra tipo III, a partir de um molde de silicone, representando uma arcada maxilar desdentada com rebordo normal. As bases de prova foram confeccionadas com espessura de ±2,5mm e os planos de orientação em cera, com 1cm de altura posterior e 2 cm de altura anterior. O modelo de gesso com o plano de orientação em cera foi fixado no ramo superior do articulador semi-ajustável, com distância intercondilar média, ângulo de Bennet em 15 graus e guia condilar em 30 graus. Em seguida, um modelo de arcada mandibular dentada foi posicionado sobre o plano de cera do modelo superior e fixado na haste inferior do articulador, posicionando o pino incisal em zero. Depois da montagem dos dentes artificiais, o modelo da prótese foi removido do articulador e moldado com silicone. Os dentes foram colocados no molde e sobre eles foi vertida cera rosa liquefeita, até o completo preenchimento do molde. Antes da solidificação da cera, o modelo de gesso foi adaptado no molde e mantido em posição até o completo esfriamento da cera, quando o conjunto modelo de gesso-base de prova com dentes artificiais foi removido do molde. Foram confeccionados pontos referenciais sobre a região mediana da borda incisal dos incisivos centrais, cúspide vestibular dos primeiros pré-molares e cúspide disto-vestibular dos segundos molares, por meio de perfurações para fixação de segmentos de alfinetes metálicos com adesivo instantâneo à base de cianoacrilato. As mensurações foram realizadas nas distâncias transversais entre: incisivos centrais; primeiros pré-molares; e segundos molares, e ântero-posteriores entre: incisivo central direito e molar direito; incisivo central esquerdo e molar esquerdo, com microscópio comparador linear antes da inclusão e depois do acabamento das próteses. Nos grupos com proporção recomendada pelos fabricantes, as próteses foram prensadas convencionalmente. Nos demais grupos, os mesmos procedimentos foram adotados, com exceção da proporção de monômero que foi de 25% a mais ou 25% a menos. Os dados de deslocamento dental foram submetidos à análise de variância e ao teste de Tukey (5%). Não houve diferença estatística entre os grupos com quantidade de monômero recomendada pelo fabricante (grupo controle) e os demais grupos tanto na polimerização convencional como por microondas. A alteração na quantidade de monômero para mais ou para menos em relação à proporção monômero-polímero não influenciou a movimentação dental linear nos sentidos transversal e ântero-posterior.Abstract: The purpose of the study was to verify the linear displacement of the teeth in complete upper denture made with acrylic resin, with monomer content indicated by the manufacturer, with 25% in excess and 25% less, in the conventional and microwaves polymerization techniques. Thirty casts were made with type III stone plaster, based on silicone mould, representing an edentulous maxillary arch with normal edge. The Wax baseplates were manufactured in a ±2.5mm thickness and the Wax Rims with 10 mm of posterior height and 20 mm of anterior height. The stone cast related with the Wax rim was fixed at the top stem of semi-adjustable articulator, adjusting the intercondylar distance in Medium, the angle of Bennet in 15 degrees and the condylar guidance in 30 degrees. A mandibular arch with teeth was placed on the Wax rim and fixed on the bottom shaft of the articulator, positioning the incisal pin to zero. After mounting the artificial teeth, the denture was removed from the articulator and impressed with silicone. The teeth were placed in the impression mold and over them it was poured a liquid Wax, until the mold filling was completed. Before solidification of the Wax, the stone cast mold was adapted in the impression and kept in position until the Wax setting. After Wax setting, the stone cast- denture with artificial teeth set was removed from the silicone impression. Reference points were fixed over the median region of the incisal edge of central incisors, buccal cusp of the first premolar and distal-buccal cusp of the second molars in drill holes performed for fixation of the metal pin segments with instantaneous adhesive based on cyanoacrylate. The measurements were made in the transverse distances among: central incisors; first premolar; second molar, and anteroposterior among: central right incisor and right molar; central left incisor and left molar, with a linear comparator microscope before and after denture procedure. In the groups with monomer content recommended by the manufacturer, the dentures were conventionally pressed. In the other groups, the same procedures were adopted, with exception of the monomer content that was 25% in excess or 25% less. The dental displacement data were submitted to ANOVA and Tukey's test (5%). There was no statistically significant difference among the groups with the monomer content recommended by the manufacturer and other groups, in both conventional and microwaved activations. To change the content of monomer to more or less in relation to monomer-polymer proportion did not influence the linear displacement of the teeth in transverse or anteroposterior directions.MestradoProtese DentalMestre em Clínica Odontológic
Smita Aru Khalika - One of the best experts on this subject based on the ideXlab platform.
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A device for occlusal plane determination
Wolters Kluwer Medknow Publications, 2019Co-Authors: Abdul Haque Maqsood Ahmed Inamda, Shankar Pandharinath Dange, Kisho M Mahale, Smita Aru KhalikaAbstract:The correct orientation of the occlusal plane is the first and one of the important steps while recording jaw relationships in an edentulous patient. One of the most popular methods is to orient the occlusal plane to interpupillary line anteriorly and ala-tragus lines posteriorly which is usually accomplished by repetitive adjustment of the maxillary rim until a hand-held Fox's plane appears to be parallel to these lines. However, this process is time-consuming and error-prone. The eventual plane is almost always an educated guess, and this can be difficult for a new student. The device presented in this article marks the occlusal plane on Wax Rims parallel to interpupillary line anteriorly and the ala-tragus lines posteriorly, and thus, occlusal plane can be oriented in one simple step, thereby saving time and increasing efficiency of the operator
Abdul Haque Maqsood Ahmed Inamda - One of the best experts on this subject based on the ideXlab platform.
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A device for occlusal plane determination
Wolters Kluwer Medknow Publications, 2019Co-Authors: Abdul Haque Maqsood Ahmed Inamda, Shankar Pandharinath Dange, Kisho M Mahale, Smita Aru KhalikaAbstract:The correct orientation of the occlusal plane is the first and one of the important steps while recording jaw relationships in an edentulous patient. One of the most popular methods is to orient the occlusal plane to interpupillary line anteriorly and ala-tragus lines posteriorly which is usually accomplished by repetitive adjustment of the maxillary rim until a hand-held Fox's plane appears to be parallel to these lines. However, this process is time-consuming and error-prone. The eventual plane is almost always an educated guess, and this can be difficult for a new student. The device presented in this article marks the occlusal plane on Wax Rims parallel to interpupillary line anteriorly and the ala-tragus lines posteriorly, and thus, occlusal plane can be oriented in one simple step, thereby saving time and increasing efficiency of the operator
