التفاصيل البيبلوغرافية
| العنوان: |
Fracture Strength of Implant-supported Full-contoured Titanium and Zirconia Single Crowns Connected to Titanium Cores |
| المؤلفون: |
Mohandesan, Hooman |
| المساهمون: |
De Souza, Grace, Tam, Laura, Dentistry |
| سنة النشر: |
2017 |
| المجموعة: |
University of Toronto: Research Repository T-Space |
| مصطلحات موضوعية: |
Artificial aging, Customized crown, Dental implant, Fracture strength, Titanium insert, Zirconia |
| Time: |
0567 |
| الوصف: |
Objectives: To investigate the fracture strength and failure mode of implant-supported screw-retained customized 2-piece zirconia and 1-piece titanium restorations, and to evaluate the effect of aging on the mechanical performance of zirconia restorations. Materials and Methods: Thirty identical specimens simulating maxillary first premolar replacements were divided in 3 groups. Groups ZrA and ZrNA consisted of zirconia and Group Ti consisted of titanium restorations, anchored to implants embedded in PMMA. Specimens in Group ZrA underwent chewing simulation. Static load was applied until failure. Results: Group Ti showed the highest fracture strength. The difference was significant between Groups ZrA and Ti. Failures included partial or complete fracture of titanium insert or deformation of restoration with screw fracture. Conclusion: Evidence was inadequate to reject similarity in fracture strength between non-aged zirconia and titanium restorations, or between zirconia restorations with different aging conditions. Aging affected the failure mode of zirconia restorations. ; M.H.Sc. ; 2017-07-05 00:00:00 |
| نوع الوثيقة: |
thesis |
| اللغة: |
unknown |
| Relation: |
http://hdl.handle.net/1807/77789 |
| الاتاحة: |
http://hdl.handle.net/1807/77789 |
| رقم الانضمام: |
edsbas.82B5DB03 |
| قاعدة البيانات: |
BASE |