Evaluation of marginal and internal gaps in single and three-unit metal frameworks made by micro-stereolithography
The Journal of Advanced Prosthodontics
;
: 239-243, 2017.
Artigo
em Inglês
| WPRIM
| ID: wpr-114933
ABSTRACT
PURPOSE:
The purpose of this study is to compare single and three-unit metal frameworks that are produced by micro-stereolithography. MATERIALS ANDMETHODS:
Silicone impressions of a selected molar and a premolar were used to make master abutments that were scanned into a stereolithography file. The file was processed with computer aided design software to create single and three-unit designs from which resin frameworks were created using micro-stereolithography. These resin frameworks were subjected to investment, burnout, and casting to fabricate single and three-unit metal ones that were measured under a digital microscope by using the silicone replica technique. The measurements were verified by means of the Mann-Whitney U test (α=.05).RESULTS:
The marginal gap was 101.9 ± 53.4 µm for SM group and 104.3 ± 62.9 µm for TUM group. The measurement of non-pontics in a single metal framework was 93.6 ± 43.9 µm, and that of non-pontics in a three-unit metal framework was 64.9 ± 46.5 µm. The dimension of pontics in a single metal framework was 110.2 ± 61.4 µm, and that of pontics in a three-unit metal framework was 143.7 ± 51.8 µm.CONCLUSION:
The marginal gap was smaller for the single metal framework than for the three-unit one, which requires further improvement before it can be used for clinical purposes.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Silício
/
Silicones
/
Dente Pré-Molar
/
Técnicas de Réplica
/
Desenho Assistido por Computador
/
Prótese Parcial Fixa
/
Investimentos em Saúde
/
Dente Molar
Idioma:
Inglês
Revista:
The Journal of Advanced Prosthodontics
Ano de publicação:
2017
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS