| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 936.49 KB | Adobe PDF |
Autores
Resumo(s)
Introdução: para a correta estabilidade da prótese parcial removível devem ser realizados nichos nas superfícies oclusais e cingulares dos dentes pilares. Os apoios oclusais e cingulares assentam nos nichos cuja realização deve respeitar algumas regras. Apesar das mesmas, a avaliação que o Médico Dentista faz dos nichos é subjetiva. O Médico Dentista olha e apercebe se, aparentemente, o nicho tem a forma, profundidade e dimensões que lhe agradam. Com uma impressão digital do nicho, podem ser medidos estes parâmetros com maior precisão e verificar se os nichos estão de acordo com os parâmetros da literatura.
Objetivos: avaliar a forma, a profundidade, o ângulo e as dimensões dos nichos preparados, avaliar a variação de volume de estrutura dentária (diferença entre o volume inicial e final) e comparar os resultados obtidos com os recomendados na literatura sobre preparações de nichos.
Materiais e Métodos: os nichos foram digitalizados com o scanner intraoral Dental Wings® Model DW-IO-001 intraoral scanner (IOS) e foi analisada a forma, a largura vestíbulo-lingual, a largura mesio-distal, a profundidade, o ângulo formado pelo apoio oclusal e a parte vertical do conetor menor que encosta ao dente e o volume retirado usando o software Geomagic Control X®.
Resultados: a largura vestíbulo-lingual dos nichos analisados está de acordo com os valores recomendados na literatura. Relativamente à largura mesio-distal, verificamos valores concordantes nos nichos cingulares e não concordantes nos oclusais. A média dos ângulos dos nichos preparados não respeita as recomendações. Nenhum dos nichos preparados tem profundidade correta. Apenas 33,3% dos nichos apresentam forma correta. Nos nichos cingulares o volume médio retirado foi de 2,42mm3 e nos nichos oclusais este volume foi de 4,02mm3.
Conclusões: Apesar de recentes, as tecnologias digitais de scanner intraoral podem ser um apoio para o processo de ensino / aprendizagem de Prostodontia Removível. Com exceção da largura vestíbulo-lingual de todos os nichos, e mesio-distal dos nichos cingulares, todos os outros parâmetros não se encontram de acordo com o recomendado na literatura.
Introduction: for correct stability of the removable partial denture, rest seats should be performed on the occlusal and cingular surfaces of the abutment teeth. The occlusal and cingular rest are supported on the rest seat whose performance must respect some rules. Despite these, the assessment that the Dentist makes of the rest seats is subjective. The Dentist looks and realizes if, apparently, the rest seat has the shape, depth and dimensions that seems right. With digital impression of the rest seat, these parameters can be measured with greater precision and verify if the rest seats are in agreement with the parameters of the literature. Objectives: evaluate the shape, depth, angle and dimensions of prepared rest seats, to evaluate the volume variation of dental structure (difference between initial and final volume) and to compare the results obtained with those recommended in the literature on rest seats preparations. Materials and Methods: the rest seats were scanned with the intraoral scanner Dental Wings® Model DW-IO-001 intraoral scanner (IOS) and were analyzed the shape, bucco-lingual distance, mesio-distal distance, rest depth, angle of the rest support surface with the tooth axial Wall and the volume removed using Geomagic Control X® software. Results: the bucco-lingual distance of the analyzed niches is in agreement with the values recommended in the literature. Regarding the mesio-distal distance, we found concordant values in the cingular rest seats and non-concordant in the occlusals. The average of the angles of the prepared rest seats does not respect the recommendations. None of the prepared rest seats have correct depth. Only 33,3% of the niches present correct form. In the cingular rest seats the mean volume withdrawn was 2,42 mm3 and in the occlusal rest seats this volume was 4,02 mm3. Conclusions: Although recent, digital intraoral scanning technologies can be a support for the teaching / learning process of Removable Prosthodontics. With the exception of the bucco-lingual of all rest seats and mesio-distal distance of the cingular rest seats, all other parameters are not in agreement with the literature.
Introduction: for correct stability of the removable partial denture, rest seats should be performed on the occlusal and cingular surfaces of the abutment teeth. The occlusal and cingular rest are supported on the rest seat whose performance must respect some rules. Despite these, the assessment that the Dentist makes of the rest seats is subjective. The Dentist looks and realizes if, apparently, the rest seat has the shape, depth and dimensions that seems right. With digital impression of the rest seat, these parameters can be measured with greater precision and verify if the rest seats are in agreement with the parameters of the literature. Objectives: evaluate the shape, depth, angle and dimensions of prepared rest seats, to evaluate the volume variation of dental structure (difference between initial and final volume) and to compare the results obtained with those recommended in the literature on rest seats preparations. Materials and Methods: the rest seats were scanned with the intraoral scanner Dental Wings® Model DW-IO-001 intraoral scanner (IOS) and were analyzed the shape, bucco-lingual distance, mesio-distal distance, rest depth, angle of the rest support surface with the tooth axial Wall and the volume removed using Geomagic Control X® software. Results: the bucco-lingual distance of the analyzed niches is in agreement with the values recommended in the literature. Regarding the mesio-distal distance, we found concordant values in the cingular rest seats and non-concordant in the occlusals. The average of the angles of the prepared rest seats does not respect the recommendations. None of the prepared rest seats have correct depth. Only 33,3% of the niches present correct form. In the cingular rest seats the mean volume withdrawn was 2,42 mm3 and in the occlusal rest seats this volume was 4,02 mm3. Conclusions: Although recent, digital intraoral scanning technologies can be a support for the teaching / learning process of Removable Prosthodontics. With the exception of the bucco-lingual of all rest seats and mesio-distal distance of the cingular rest seats, all other parameters are not in agreement with the literature.