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Impacto das lupas de magnificação nas linhas de terminação dos preparos para prótese fixa
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 38325 | 1.12 MB | Adobe PDF |
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Abstract(s)
Objetivo: O objetivo deste estudo foi determinar qual o impacto das lupas de magnificação na qualidade das linhas de terminação durante a realização dos preparos para prótese fixa.
Métodos: Foram utilizados 64 dentes naturais, divididos de forma equitativa, em 2 Grupos (O e L), consoante foram preparados a olho nú ou com lupas de magnificação 2,5x. Foram definidos 3 critérios de avaliação (Continuidade, Rugosidade e Espessura) que visaram determinar, com objetividade, a qualidade da linha de terminação dos preparos dentários para prótese fixa. Esta avaliação foi feita recorrendo a um microscópio odontológico de ampliação 10x. A concordância inter e intrainvestigador foi também avaliada.
Resultados: Não existiram diferenças significativas entre o Grupo O e L em nenhum dos parâmetros avaliados. Na Espessura, o Grupo O apresenta uma mediana (AIQ) de 600 μm (500; 800μm) e o Grupo L de 600 μm (400; 800 μm). O Grupo L mostrou-se Contínuo em 64,8% dos casos, Pouco Contínuo em 26,1% e Não Contínuo em 9,1% das avaliações, tendo assim uma ligeira vantagem em relação ao Grupo O, cujos valores eram 58,0%, 35,2% e 6,8% respetivamente. O Grupo L apresentou-se Polido em 71,0% dos casos e Rugoso em 29,0% dos casos, contra 69,3% e 30,7% do Grupo O pela mesma ordem.
Conclusões: As lupas de magnificação 2,5x demonstraram um curto impacto positivo na melhoria da qualidade dos preparos dentários para prótese fixa, no entanto, como os resultados não são Estatisticamente significativos para a amostra, está impossibilitada a sua extrapolação para a população.
Objective: The aim of this study was to determine the impact of magnifying loupes on the quality of the finish lines during the dental preparation of fixed prosthesis. Methods: A total of 64 natural teeth were used, divided into 2 groups (O and L), equally distributed according to whether the teeth were prepared with the naked eye or with a 2.5x magnifying loupes, respectively. Three evaluation criteria (Continuity, Roughness, Thickness) were defined in order to objectively determine the quality of the finish line of the dental preparations for fixed prosthesis. This evaluation was done using a dental microscope with 10x magnification. Inter and intra-investigator agreement was also evaluated. Results: There were no significant differences between the groups in any of the parameters evaluated. In thickness, Group O had a median (IQR) of 600 μm (500; 800μm) and Group L, 600 μm (400; 800 μm). Group L was Continuous in 64.8% of the cases, Slightly Continuous in 26.1% of the evaluations, and Not Continuous in 9.1% of the cases, thus having a slight advantage over Group O, whose values were 58.0%, 35.2%, and 6.8% respectively. Group L was polished in 71.0% of the cases and rough in 29.0% of the evaluations, against 69.3% and 30.7% of Group O, subsequently. Conclusions: The 2.5x magnification showed a short positive impact in improving the quality of the finish line, however, as the results are not statistically significant for the sample, it is impossible to extrapolate them to the population.
Objective: The aim of this study was to determine the impact of magnifying loupes on the quality of the finish lines during the dental preparation of fixed prosthesis. Methods: A total of 64 natural teeth were used, divided into 2 groups (O and L), equally distributed according to whether the teeth were prepared with the naked eye or with a 2.5x magnifying loupes, respectively. Three evaluation criteria (Continuity, Roughness, Thickness) were defined in order to objectively determine the quality of the finish line of the dental preparations for fixed prosthesis. This evaluation was done using a dental microscope with 10x magnification. Inter and intra-investigator agreement was also evaluated. Results: There were no significant differences between the groups in any of the parameters evaluated. In thickness, Group O had a median (IQR) of 600 μm (500; 800μm) and Group L, 600 μm (400; 800 μm). Group L was Continuous in 64.8% of the cases, Slightly Continuous in 26.1% of the evaluations, and Not Continuous in 9.1% of the cases, thus having a slight advantage over Group O, whose values were 58.0%, 35.2%, and 6.8% respectively. Group L was polished in 71.0% of the cases and rough in 29.0% of the evaluations, against 69.3% and 30.7% of Group O, subsequently. Conclusions: The 2.5x magnification showed a short positive impact in improving the quality of the finish line, however, as the results are not statistically significant for the sample, it is impossible to extrapolate them to the population.
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Keywords
Prótese fixa Lupas de magnificação Linha de terminação Preparação dentária Qualidade de preparação Fixed prosthesis Magnification loupes Finish line Dental preparation Preparation quality