ABSTRACT
Cinco combinações de materiais comumente utilizados para registros intermaxilares em casos de extremidades livres bilaterais foram avaliados: base de resina acrílica + cera; base de resina acrílica + pasta zincoenólica; base de resina acrílica + cera + resina Duralay; silicona de condensação; e placa de resina acrílica + hidrocolóide irreversível. Foi realizada a medida da distância vertical entre pontos referenciais em 6 regiões nas bases dos modelos articulados. As medidas obtidas com a articulação manual dos modelos foram tomadas como padrão de comparação para as medidas obtidas com os materiais testados. Os resultados foram submetidos à análise estatística por meio de análise de variância e teste de Tukey. Houve diferença estatisticamente significante (p<0.05) entre a silicona de condensação e a combinação da base de resina acrílica + cera, porém entre os demais materiais não houve diferença estatisticamente significante. A silicona de condensação apresentou as maiores diferenças em relação às medidas obtidas pela articulação manual dos modelos e a combinação da base de resina acrílica + cera apresentou as menores diferenças. Com base nos achados deste estudo, a seguinte escala de reprodutibilidade pode ser estabelecida, do melhor para o pior: base de resina acrílica + cera; placa de resina acrílica + hidrocolóide irreversível; base de resina acrílica + cera + pasta zincoenólica; base de resina acrílica + cera + resina Duralay; e silicona de condensação.
Subject(s)
Humans , Dental Materials , Denture Design , Denture, Partial , Jaw Relation Record/methods , Acrylic Resins/chemistry , Alginates/chemistry , Colloids/chemistry , Dental Articulators , Dental Materials/chemistry , Denture, Partial/classification , Inlay Casting Wax/chemistry , Methylmethacrylates/chemistry , Surface Properties , Silicone Elastomers/chemistry , Vertical Dimension , Zinc Oxide-Eugenol Cement/chemistryABSTRACT
Five combinations of materials commonly used for intermaxillary records in cases of bilateral free end saddle were evaluated: acrylic resin base + wax; acrylic resin base + wax + ZOE paste; acrylic resin base + wax + Duralay resin; condensation silicone; and acrylic resin plate + irreversible hydrocolloid. The materials were evaluated by measuring the vertical distance between pairs of reference points located on the bases of the upper and lower articulated casts. The measurements obtained by manual articulation of the casts were used as the standards to which the measurements obtained with the recording materials were compared. ANOVA revealed significant differences among the materials and the Tukey's test showed that condensation silicone differed significantly (p<0.05) from the acrylic resin + wax combination, while no significant differences (p>0.05) were observed among the remaining materials. The condensation silicone presented the greatest differences from the measurements obtained by manual articulation of the casts whereas the acrylic resin base + wax combination presented the least differences. Based on the findings of this study, the following scale of fidelity can be settled from best to worst: acrylic resin base + wax; acrylic resin plate + alginate; acrylic resin base + wax + ZOE; acrylic resin base + wax + Duralay; and condensation silicone.
Subject(s)
Dental Materials , Denture Design , Denture, Partial , Jaw Relation Record/methods , Acrylic Resins/chemistry , Alginates/chemistry , Colloids/chemistry , Dental Articulators , Dental Materials/chemistry , Denture, Partial/classification , Humans , Inlay Casting Wax/chemistry , Methylmethacrylates/chemistry , Silicone Elastomers/chemistry , Surface Properties , Vertical Dimension , Zinc Oxide-Eugenol Cement/chemistryABSTRACT
The use of systematic terminology for implant prostheses can simplify communication within the scientific community. However, a review of the current literature demonstrates the lack of uniformity in this field. It is the purpose of this manuscript to suggest uniform terminology based on conventional prosthodontic terms that will simplify communication in the profession.
Subject(s)
Dental Implants , Dental Prosthesis, Implant-Supported , Terminology as Topic , Dental Implants/classification , Dental Prosthesis Design/classification , Dental Prosthesis, Implant-Supported/classification , Denture Design/classification , Denture, Complete/classification , Denture, Partial/classification , HumansABSTRACT
The study assessed the number of missing teeth, the state of the existing prosthodontic appliances and the need for their replacement. Dental status and anamnesis were taken on a group of 120 elderly home residents by trained examiners. Prosthodontic appliances were evaluated according to the Karlsson's index for the crowns and bridges, and according to the modified Nevalainen et al. index for the evaluation of the complete dentures, as well as the need for prosthetic treatment. The most persistent teeth in both jaws were lower canines, while the most commonly missing teeth were lower first molars. On average, the crowns were older and in poorer condition than the bridges. Lower complete dentures had better stability but were also less retentive in comparison with the upper complete dentures. More than 82% of the subjects were in need of either fixed, removable or combined prosthodontic treatment. The high prevalence of needs for prosthodontic treatment pointed to the requirement for frequent dental check ups within elderly home residents in order to better identify and meet their dental needs.
Subject(s)
Dentures , Tooth Loss/classification , Aged , Crowns , Cuspid/pathology , Dental Care for Aged , Denture Retention , Denture, Complete, Lower , Denture, Complete, Upper , Denture, Partial/classification , Female , Health Services Needs and Demand , Health Status , Homes for the Aged , Humans , Jaw, Edentulous, Partially/classification , Male , Mandible , Molar/pathology , Oral Health , PrevalenceABSTRACT
El próposito principal del empleo del sistema de remplazo de dientes UDA si se lo usa correctamente es el de preservar y optimizar la condición fisiológica y el comportamiento masticatorio del sistema oral. El sitema UDA (Anclaje dental Universal) puede usarse en las áreas anterior y posterior y es adecuado para el remplazo de brechas simples y múltiples. Lo nuevo y actualizado en este concepto es que no sólo es una forma de evitar que los dientes pilares soporten fuerzas sumamente altas, sino que tambien ortoga posibilidades de combinar esta técnica con otras aplicaciones protéticas, sobre todo, la reversibilidad del procedimiento de UDA deja el camino abierto para progresos futuros. Los promisorios resultados, fruto de años de investigación clínica y experimental en diversas universidades de Europa, respaldan la exitencia de una técnica absolutamente justificada en los ámbitos médico. biológico, uso del sistema UDA y que son la preservación de la solidez de la sustancia del diente y el tejido periodontal, así como tambien faltas de interferencia con la oclusión natural, que son aspectos considerados prioritarios, asimismo, el aspecto económico del sistema se adapta a las necesidades del paciente
Subject(s)
Male , Female , Humans , Adult , Denture, Partial/classification , Denture, Partial/history , Denture, Partial/standardsABSTRACT
Las sobredentaduras Parciales Removibles, constituyen una opción más dentro de las restauraciones parciales removibles. Permiten la distribución de las fuerzas verticales, a través de la base de la prótesis. Las Sobredentaduras Parciales Removibles, en base a dispositivos magnéticos pueden ser retiradas e instaladas con facilidad, por parte del paciente. Para el uso de Sobredentaduras, se debe realizar una evaluación periodontal detallada. Las Slbredentaduras Parciales Removibles, son una modalidad terapéutica excelente para preservar el proceso alveolar. Al retener la raíz o raíces naturales, por debajo e la Sobredentadura Parcial Removible, logramos conservar la sensibilidad por la presencia de ligamento periodontal. Este tipo de Sobredentaduras no presentan alteraciones, puesto que los dispositivos intraradiculares no proporcionan movimento radicular
Subject(s)
Male , Female , Humans , Adult , Denture, Partial/classification , Denture, Partial/standardsABSTRACT
Based on data from patient records from a random sample of Dutch general practices, a study was made of the bridge distribution pattern in different patient groups. Patient variables such as age, sex and insurance type were analysed. More women had a bridge inserted than men. However, there appeared to be no difference in the average quantity of bridges in men or women. The abutment teeth most frequently used were the cuspids in the maxilla and the second premolars and second molars in the mandible. Fourteen percent of the bridges consisted of five or more units, 14% were free-end bridges, 13% did not meet Ante's law and 16% had one or more non-vital abutment teeth.
Subject(s)
Denture, Partial/statistics & numerical data , Adult , Age Factors , Aged , Aged, 80 and over , Dental Abutments/statistics & numerical data , Denture Design/statistics & numerical data , Denture, Partial/classification , Female , General Practice, Dental , Humans , Insurance, Health , Insurance, Health, Reimbursement , Male , Middle Aged , Netherlands , Sex FactorsSubject(s)
Denture, Partial , Jaw, Edentulous, Partially/therapy , Denture, Partial/classification , Humans , Mandible , MaxillaSubject(s)
Denture, Partial, Removable , Denture Precision Attachment , Denture Retention , Denture, Overlay , Denture, Partial/classification , Denture, Partial, Removable/adverse effects , Finland , Gingiva , Periodontium , Prosthodontics/education , Research , Scandinavian and Nordic Countries , Switzerland , Teaching/standards , United KingdomABSTRACT
Mediante la construcción de éstos refuerzos, el material acrílico tiene estabilidad en el espacio que deberá ocupar - Presenta mayor resistencia a las diferentes fuerzas de desalojamiento que se producen en los movimientos masticatorios - Se evita el desplazamiento, comprensión y escurrimiento del material acrílico en el puente - Se disminuyen las posibilidades de fractura del material acrílico
