Abstract
Purpose: The purpose of this study was to compare the fracture strength of the metal and the bond strength in metal-ceramic restorations produced by selective laser sintering (SLS) and by conventional casting (CAST). Materials and Methods: Non-precious alloy (StarLoy C, DeguDent, Hanau, Germany) was used in CAST group and metal powder (SP2, EOS GmbH, Munich, Germany) in SLS group. Metal specimens in the form of sheets (25.0 × 3.0 × 0.5 mm) were produced in accordance with ISO 9693:1999 standards (n=30). To measure the bond strength, ceramic was fired on a metal specimen and then three-point bending test was performed. In addition, the metal fracture strength was measured by continuing the application of the load. The values were statistically analyzed by performing independent t-tests (α=.05). Results: The mean bond strength of the SLS group (50.60 MPa) was higher than that of the CAST group (46.29 MPa), but there was no statistically significant difference. The metal fracture strength of the SLS group (1087.2 MPa) was lower than that of the CAST group (2399.1 MPa), and this difference was statistically significant. Conclusion: In conclusion the balling phenomenon and the gap formation of the SLS process may increase the metal-ceramic bond strength.
| Original language | English |
|---|---|
| Pages (from-to) | 266-271 |
| Number of pages | 6 |
| Journal | Journal of Advanced Prosthodontics |
| Volume | 6 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2014 Jan 1 |
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ASJC Scopus subject areas
- Dentistry (miscellaneous)
- Oral Surgery
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Bond and fracture strength of metal-ceramic restorations formed by selective laser sintering. / Bae, Eun Jeong; Kim, Ji Hwan; Kim, Woong Chul; Kim, Hae-Young.
In: Journal of Advanced Prosthodontics, Vol. 6, No. 4, 01.01.2014, p. 266-271.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Bond and fracture strength of metal-ceramic restorations formed by selective laser sintering
AU - Bae, Eun Jeong
AU - Kim, Ji Hwan
AU - Kim, Woong Chul
AU - Kim, Hae-Young
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Purpose: The purpose of this study was to compare the fracture strength of the metal and the bond strength in metal-ceramic restorations produced by selective laser sintering (SLS) and by conventional casting (CAST). Materials and Methods: Non-precious alloy (StarLoy C, DeguDent, Hanau, Germany) was used in CAST group and metal powder (SP2, EOS GmbH, Munich, Germany) in SLS group. Metal specimens in the form of sheets (25.0 × 3.0 × 0.5 mm) were produced in accordance with ISO 9693:1999 standards (n=30). To measure the bond strength, ceramic was fired on a metal specimen and then three-point bending test was performed. In addition, the metal fracture strength was measured by continuing the application of the load. The values were statistically analyzed by performing independent t-tests (α=.05). Results: The mean bond strength of the SLS group (50.60 MPa) was higher than that of the CAST group (46.29 MPa), but there was no statistically significant difference. The metal fracture strength of the SLS group (1087.2 MPa) was lower than that of the CAST group (2399.1 MPa), and this difference was statistically significant. Conclusion: In conclusion the balling phenomenon and the gap formation of the SLS process may increase the metal-ceramic bond strength.
AB - Purpose: The purpose of this study was to compare the fracture strength of the metal and the bond strength in metal-ceramic restorations produced by selective laser sintering (SLS) and by conventional casting (CAST). Materials and Methods: Non-precious alloy (StarLoy C, DeguDent, Hanau, Germany) was used in CAST group and metal powder (SP2, EOS GmbH, Munich, Germany) in SLS group. Metal specimens in the form of sheets (25.0 × 3.0 × 0.5 mm) were produced in accordance with ISO 9693:1999 standards (n=30). To measure the bond strength, ceramic was fired on a metal specimen and then three-point bending test was performed. In addition, the metal fracture strength was measured by continuing the application of the load. The values were statistically analyzed by performing independent t-tests (α=.05). Results: The mean bond strength of the SLS group (50.60 MPa) was higher than that of the CAST group (46.29 MPa), but there was no statistically significant difference. The metal fracture strength of the SLS group (1087.2 MPa) was lower than that of the CAST group (2399.1 MPa), and this difference was statistically significant. Conclusion: In conclusion the balling phenomenon and the gap formation of the SLS process may increase the metal-ceramic bond strength.
KW - Balling phenomenon
KW - Bond strength
KW - Fracture strength
KW - Metal-ceramic restoration
KW - Selective laser sintering
UR - http://www.scopus.com/inward/record.url?scp=84906703657&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84906703657&partnerID=8YFLogxK
U2 - 10.4047/jap.2014.6.4.266
DO - 10.4047/jap.2014.6.4.266
M3 - Article
VL - 6
SP - 266
EP - 271
JO - Journal of Advanced Prosthodontics
JF - Journal of Advanced Prosthodontics
SN - 2005-7806
IS - 4
ER -