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Amaç: Bu çalışmanın amacı, farklı basamak tipi ve koniklik açısının lityum disilikat cam seramiklerin baskı dayanımına olan etkisini değerlendirmektir. Gereç ve Yöntem: Baskı dayanıklılığı testi için farklı basamak tipi (chamfer ve shoulder) ve 2 farklı koniklik açısında (6° ve 12°) 40 adet metal day hazırlandı. Metal day üzerine IPS e.max Press örnekler simante edildikten sonra baskı testi uygulandı. Bulgular: Veriler Varyans analizi (ANOVA) ile değerlendirildi ve sonuçlar istatistiksel olarak önemli bulunmuştur (p=0.00). 12° konik açılı shoulder basa- mak tipli örnekleryüksek (3534.40±159.50 MPa), 6° konik açılı chamfer örnekler isedüşük (2281.28± 171.31 MPa) baskı dayanımı değerlerini göstermiştir. Sonuç: Koniklik açısı ve basamak tipinin farklı olması IPS e.max Press' in baskı dayanımını etkilemektedir. Anahtar Kelimeler: Lityum disilikat cam seramik, baskı dayanımı, basamak, koniklik açısı EVALUATION OF THE EFFECT OF MARGINAL DESIGN AND TAPER ANGLE ON THE FRACTURE STRENGTH OF LITHIUM DISILICATE GLASS CERAMICS ABSTRACT Aim: The aim of this study was to evaluate the effect of different margin designs and taper angel on fracture strength of lithium disilicate glass ceramics. Materials and Methods: A total of 40 metal die samples with different margin designs (shoulder and chamfer) and two different taper angel (6° ve 12°) were prepared for fracture strength test. Fracture force was applied after IPS e.max Press samples was cemented to the metal dies. Results: The data were analyzed with ANOVA and the results were statistically significant (p=0.00).. The samples with 12° taper angle and shoulder margin design showed the highest fracture strength (3534.40±159.50 MPa), the samples with 6° taper angle and chamfer margin design showed the lowest fracture strength (2281.28±171.31 MPa). Conclusion: Different taper angle and margin design effect the fracture strength of IPS e.max Press. Keywords: Lithium disilicate glass ceramic, fracture strength, margin design, taper angle
Purpose: The purpose of this study is to evaluate the impact of different staircase types and conjunctive angles on the pressure resistance of lithium disilicate glass ceramics. Tools and Methods: 40 metals were prepared for the pressure resistance test in different staircase types (chamfer and shoulder) and 2 different coincity angles (6° and 12°). On the metal day IPS e.max Press samples were simulated after the printing test was applied. Results: The data was evaluated by the Varians Analysis (ANOVA) and the results were statistically important (p=0.00). Examples of 12° conic corner basal-mc type high (3534.40±159.50 MPa), 6° conic corner chamber examples showed the pressure resistance values of low (2281.28±171.31 MPa). The result is that the angle of coincidence and the type of step are different from the IPS e. Max Press’s pressure resistance is influenced. Keywords: Lithium disilicate glass ceramics, pressure resistance, scale, conjunction angle EVALUATION OF THE EFFECT OF MARGINAL DESIGN AND TAPER ANGLE ON THE FRACTURE STRENGTH OF LITHIUM DISILICATE GLASS CERAMICS ABSTRACT Aim: The aim of this study was to evaluate the effect of different margin designs and taper angel on fracture strength of lithium disilicate glass ceramics. Materials and Methods: A total of 40 metal die samples with different margin designs (shoulder and chamfer) and two different taper angels (6° and 12°) were prepared for fracture strength test. Fracture force was applied after IPS e.max Press samples was cemented to the metal dies. Results: The data were analyzed with ANOVA and the results were statistically significant (p=0. 00) The samples with 12° taper angle and shoulder margin design showed the highest fracture strength (3534.40±159.50 MPa), the samples with 6° taper angle and chamfer margin design showed the lowest fracture strength (2281.28±171.31 MPa). Conclusion: Different taper angle and margin design effect the fracture strength of IPS e.max Press. Keywords: Lithium disilicate glass ceramic, fracture strength, margin design, taper angle
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