Bond strength of commercial veneering porcelain to experimental cast Ti-Cr alloy

Sawada, Tomofumi; Schille, Christine; Schweizer, Ernst; Geis‐Gerstorfer, Jürgen; Takemoto, Shinji

doi:10.4012/dmj.2019-245

Cited by 5 publications

(4 citation statements)

References 45 publications

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“…Then, using the k = f(d M ) curve, where d M is the thickness of the metal plate, the k value was read and the adhesion of the porcelain to the titanium substrate was calculated according to EN ISO 9693 [ 42 ]. In determining the bond strength (τ b ), the following formula was used: τ b = k·F fail where: k—coefficient depending on the thickness of the base metal and Young’s modulus, k = 4.6 (E = 113 GPa, [ 41 ]); F fail —metal–ceramic bond breaking force …”

Section: Methodsmentioning

confidence: 99%

“…Many authors of works dealing with this field encourage dental practices to use this type of chemical surface treatment before firing ceramics due to the better quality of the titanium-porcelain bond and, above all, the availability and simplicity of the methods [ 18 , 34 , 35 ]. However, it should be remembered that many factors influence the titanium-porcelain bond (type of porcelain, processing parameters of the metal substrate, firing conditions of the porcelain layers), which makes research on the quality of the titanium-porcelain dental bond of continued interest [ 36 , 37 , 38 , 39 , 40 , 41 ].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Sandblasting and Chemical Etching on Titanium 99.2–Dental Porcelain Bond Strength

et al. 2021

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The metal–ceramic interface requires proper surface preparation of both metal and ceramic substrates. This process is complicated by the differences in chemical bonds and physicochemical properties that characterise the two materials. However, adequate bond strength at the interface and phase composition of the titanium-bioceramics system is essential for the durability of dental implants and improving the substrates’ functional properties. In this paper, the authors present the results of a study determining the effect of mechanical and chemical surface treatment (sandblasting and etching) on the strength and quality of the titanium-low-fusing dental porcelain bond. To evaluate the strength of the metal-ceramic interface, the authors performed mechanical tests (three-point bending) according to EN ISO 9693 standard, microscopic observations (SEM-EDS), and Raman spectroscopy studies. The results showed that depending on the chemical etching medium used, different bond strength values and failure mechanisms of the metal-ceramic system were observed. The analyzed samples met the requirements of EN ISO 9693 for metal-ceramic systems and received strength values above 25 MPa. Higher joint strength was obtained for the samples after sandblasting and chemical etching compared to the samples subjected only to sandblasting.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Sandblasting and Chemical Etching on Titanium 99.2–Dental Porcelain Bond Strength

et al. 2021

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“…The 3-point bending test performed in the current study is similar to the methods used in other recent studies [8,24] which were all according to ISO 969324. There are other previous studies evaluated the bond strength using the shear bond test [15,25].…”

Section: B Amentioning

confidence: 99%

The Impact of Recasting on the Bond Strength of Metal Ceramic Restorations

Elbishari,

Nakhal,

Aljanahi

et al. 2024

TODENTJ

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Objective The objective of this study is to evaluate the effect of recasting of Nickel Chromium (Ni-Cr) alloy on the bond strength of metal-ceramic restoration. Materials and Methods Forty-five samples fabricated from one Ni-Cr alloy were divided into three groups. Group 1 consisted of 100% fresh alloy; Group 2 consisted of 50% fresh alloy mixed with 50% alloy taken from sprue and button remnants of group 1 and group 3 consisted of 50% new alloy mixed with 50% alloy taken from sprue and button remnants of group 2. All samples were then bonded to a ceramic material. The bond strength of the Metal-Ceramic was then assessed using a 3-point bending test. The failure mode was investigated under a stereomicroscope and confirmed under scanning electron microscopy (SEM). Results Group 1 (100% fresh alloy) showed the highest bond strength amongst the other groups, while the lowest was recorded for group 3 (50% fresh alloy with 50% cast twice alloy). According to the International Organization for Standardization (ISO), the bond strength of fresh alloy and the group casted once attained the required level. Conclusion The outcome of this study indicates that the use of 100% fresh Ni-Cr base metal alloy yields the highest bond strength of metal ceramic restoration.

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“…る陶材焼付金属冠は，金属冠表面に高温 ( 750 ～ 1焼付強さを鋳造した純チタンと比較検討している(44) ．チタンクロム合金の焼付強さは26～33 MPa で，純 Kおよび9.55±0.04×10 -6 /K であり，焼成したいずれの陶材(CM および IT)の熱膨張係数(8.5～9.4×10 -6 /K) チタンクロム合金に 2 種類の陶材を焼き付け，焼付強さを測定した後の破断面の分析．チタンクロム合金と剥離した陶材 (ceraMotion Ti)面にチタンが検出され，酸化膜内での破壊が観察される試料(チタンクロム合金表面の酸化膜の凝集破壊) が認められる．一方，破断した陶材(Initial Ti)面にはチタンがほとんど検出されず，チタンクロム合金表面に陶材成分が検出される試料(陶材の凝集破壊)もあった(44) ．(オンラインカラー) 図 9 CAD/CAM 法に用いるチタンディスク(a)と除去加工により製作した補綴装置(b)(株式会社ジーシーより提供)．(オンラインカラー) 図10 CAD/CAM 法の付加造形により製作したステンレス鋼製ブリッジ(a)と部分床義歯のメタルフレーム(b)(東北大学金属材料研究所千葉晶彦教授，山中謙太准教授より提供)．(オンラインカラー) 武本真治，佐々木かおり，畑中昭彦，齋藤設雄，平雅之，澤田智史医工学治療，33(2021), 79 84. ( 2 ) 厚生労働省ホームページhttps://www.mhlw.go.jp/content/ 12404000/000629561.pdf (2021年 9 月30日現在) ( 3 ) T. K. Gupta, F. F. Lange and J. H. Bechtold: J.…”

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