TY - JOUR
T1 - Effect of span length on the fit of zirconia framework fabricated using CAD/CAM system
AU - Lee, Jeong Yol
AU - Choi, Sang Jin
AU - Kim, Min Soo
AU - Kim, Ha Young
AU - Kim, Young Soo
AU - Shin, Sang Wan
PY - 2013
Y1 - 2013
N2 - PURPOSE. The purpose of this study was to evaluate the effect of the span length on the fit of zirconia framework fabricated using CAD/CAM system. MATERIALS AND METHODS. Abutments for single, 4-unit and 6-unit fixed partial prostheses were fabricated. Ten zirconia frameworks were fabricated for each group. The marginal and internal gap were presented by means of replica technique and measured by measuring microscope (AXIO®, Carl Zeiss, Rochester, NY) and software (I-solution®, IMT i-solution Inc., Vancouver, BC, Canada). The results were statistically analyzed by multivariate analysis test and Dunnett T3 test for post hoc test (α=05). RESULTS. There were statistically significant differences at 2, 4, 7, 8 points (mesio-distal section) and b, d, e, f, g (labio-lingual section). In some marginal reference points of 6-unit group (P<.05), the marginal gap were larger than 120 μm. CONCLUSION. Span length of zirconia core may have an influence on marginal and internal fit. Within the limitation of this study, the increase of span length of zirconia framework of 6 or more-unit fixed partial denture may decrease the marginal and internal fit.
AB - PURPOSE. The purpose of this study was to evaluate the effect of the span length on the fit of zirconia framework fabricated using CAD/CAM system. MATERIALS AND METHODS. Abutments for single, 4-unit and 6-unit fixed partial prostheses were fabricated. Ten zirconia frameworks were fabricated for each group. The marginal and internal gap were presented by means of replica technique and measured by measuring microscope (AXIO®, Carl Zeiss, Rochester, NY) and software (I-solution®, IMT i-solution Inc., Vancouver, BC, Canada). The results were statistically analyzed by multivariate analysis test and Dunnett T3 test for post hoc test (α=05). RESULTS. There were statistically significant differences at 2, 4, 7, 8 points (mesio-distal section) and b, d, e, f, g (labio-lingual section). In some marginal reference points of 6-unit group (P<.05), the marginal gap were larger than 120 μm. CONCLUSION. Span length of zirconia core may have an influence on marginal and internal fit. Within the limitation of this study, the increase of span length of zirconia framework of 6 or more-unit fixed partial denture may decrease the marginal and internal fit.
KW - CAD/CAM
KW - Fit
KW - Span length
KW - Zirconia
UR - http://www.scopus.com/inward/record.url?scp=84883140906&partnerID=8YFLogxK
U2 - 10.4047/jap.2013.5.2.118
DO - 10.4047/jap.2013.5.2.118
M3 - Article
C2 - 23755336
AN - SCOPUS:84883140906
SN - 2005-7806
VL - 5
SP - 118
EP - 125
JO - Journal of Advanced Prosthodontics
JF - Journal of Advanced Prosthodontics
IS - 2
ER -