The effect of different surface treatments and bonding agent combinations on the shear bond strength of titanium alloy to lithium disilicate glass-ceramics
Farklı yüzey işlemlerinin ve farklı simanların titanyum tam seramik bağlanma dayanımına etkisi
- Tez No: 487570
- Danışmanlar: PROF. DR. MELAHAT ÇELİK GÜVEN
- Tez Türü: Yüksek Lisans
- Konular: Diş Hekimliği, Dentistry
- Anahtar Kelimeler: Titanium alloys, dental implant abutment, shear bond strength
- Yıl: 2017
- Dil: İngilizce
- Üniversite: İstanbul Yeni Yüzyıl Üniversitesi
- Enstitü: Sağlık Bilimleri Enstitüsü
- Ana Bilim Dalı: Protetik Diş Tedavisi Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 84
Özet
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Özet (Çeviri)
Statement of problem. The esthetic challenges of using titanium alloy abutments have led to the increasing use of prefabricated titanium inserts bonded to tooth colored abutments and fixed dental prostheses. Optimal bonding protocol related to surface treatment of titanium alloy have not been established. Purpose. The purpose of this in vitro study was to assess the effects of different surface treatment and cementation procedure combinations of titanium alloy disks on the bond strength of lithium disilicate glass-ceramics. Material and methods. A total of 40 computer-aided designed and computer-aided manufacturing (CAD-CAM) titanium alloy disks (4×6.6 mm) were used. Specimens were divided into two groups (2 groups; n=20/ group) according to surface treatment type including alumina airborne- particle abrasion (50µm, 0.4 Mpa for 10 seconds at 20-mm distance) and 9.5% Hydrofluoric acid etching gel for 90 seconds. Heat-pressed lithium disilicate disks were fabricated and bonded with resin cements onto the treated surfaces after dividing each group into two subgroups (2 subgruops; n=10/subgroup) depending on the type of resin cement was used Multilink Hybrid abutment cement or Panavia SA plus cement . All the specimens were stored in the distilled water at 37℃for 24 hours then 5000 cycles of thermal cycling were done. After thermcycling shear bond strength test was conducted using a universal testing machine. Statistical analysis were done by ANOVA and Tukey honset sinificant differences tests (P< 0.05). Results. The mean of ±SD shear bond strength values ranged from 3.89±0.59 MPa to15.91±3.23 MPa.The highest shear bond strength values were xii obtained using airborne-particle abrasion. Resin cements tested in this study had similar effect on the bonding strength values. Conclusions. Surface treatment of titanium alloy with sandblasting improved shear bond strength but increasing the etching time of 9.5% Hydrofluoric acid did not. The cement type didn't have a significant influence on shear bond strength.
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