Comparative in vitro evaluation of CAD/CAM vs conventional provisional crowns
J. appl. oral sci
;
24(3): 258-263, graf
Artigo
em Inglês
| LILACS, BBO
| ID: lil-787543
ABSTRACT
ABSTRACT Objective This study compared the marginal gap, internal fit, fracture strength, and mode of fracture of CAD/CAM provisional crowns with that of direct provisional crowns. Material and Methods An upper right first premolar phantom tooth was prepared for full ceramic crown following tooth preparation guidelines. The materials tested were VITA CAD-Temp®, Polyetheretherketone “PEEK”, Telio CAD-Temp, and Protemp™4 (control group). The crowns were divided into four groups (n=10), Group1 VITA CAD-Temp®, Group 2 PEEK, Group 3 Telio CAD-Temp, and Group 4 Protemp™4. Each crown was investigated for marginal and internal fit, fracture strength, and mode of fracture. Statistical analysis was performed using GraphPad Prism software version 6.0. Results The average marginal gap was VITA CAD-Temp® 60.61 (±9.99) µm, PEEK 46.75 (±8.26) µm, Telio CAD-Temp 56.10 (±5.65) µm, and Protemp™4 193.07(±35.96) µm (P<0.001). The average internal fit was VITA CAD-Temp® 124.94 (±22.96) µm, PEEK 113.14 (±23.55) µm, Telio CAD-Temp 110.95 (±11.64) µm, and Protemp™4 143.48(±26.74) µm. The average fracture strength was VITA CAD-Temp® 361.01 (±21.61) N, PEEK 802.23 (±111.29) N, Telio CAD-Temp 719.24 (±95.17) N, and Protemp™4 416.40 (±69.14) N. One-way ANOVA test showed a statistically significant difference for marginal gap, internal gap, and fracture strength between all groups (p<0.001). However, the mode of fracture showed no differences between the groups (p>0.05). Conclusions CAD/CAM fabricated provisional crowns demonstrated superior fit and better strength than direct provisional crowns.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Polietilenoglicóis
/
Resinas Acrílicas
/
Planejamento de Prótese Dentária
/
Desenho Assistido por Computador
/
Adaptação Marginal Dentária
/
Resinas Compostas
/
Coroas
/
Cetonas
Idioma:
Inglês
Revista:
J. appl. oral sci
Assunto da revista:
Odontologia
Ano de publicação:
2016
Tipo de documento:
Artigo
País de afiliação:
Iraque
Instituição/País de afiliação:
Erbil Polytechnic University/IQ
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