Fracture resistance of implant supported all ceramic zirconia-lithium disilicate crown
2
Issued Date
2016
Copyright Date
2016
Resource Type
Language
eng
File Type
application/pdf
No. of Pages/File Size
xi, 58 leaves : ill. (some col.)
Access Rights
open access
Rights
ผลงานนี้เป็นลิขสิทธิ์ของมหาวิทยาลัยมหิดล ขอสงวนไว้สำหรับเพื่อการศึกษาเท่านั้น ต้องอ้างอิงแหล่งที่มา ห้ามดัดแปลงเนื้อหา และห้ามนำไปใช้เพื่อการค้า
Rights Holder(s)
Mahidol University
Bibliographic Citation
Thesis (M.Sc. (Implant Dentistry))--Mahidol University, 2016
Suggested Citation
Nattanich Bunyasresth Fracture resistance of implant supported all ceramic zirconia-lithium disilicate crown. Thesis (M.Sc. (Implant Dentistry))--Mahidol University, 2016. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/93267
Title
Fracture resistance of implant supported all ceramic zirconia-lithium disilicate crown
Alternative Title(s)
ความทนทานต่อการแตกหักของครอบฟันเซอร์โคเนีย-ลิเทียมไดซิลิเกตบนรากฟันเทียม
Author(s)
Advisor(s)
Abstract
The objective of this study was to evaluate the effects of different veneering methods and the effects of different sizes of abutment on the fracture resistance of the crowns and to assess the mode of failure of these crowns. 108 implant abutments were divided into 3 groups with different sizes of abutments [O4.5(s), O5.5(m) and O6.5(l)]. Each group of implant abutments contained 3 subgroups of 12 specimens each (n=12). A zirconia framework were fabricated on all implant abutments. Various veneering materials were then applied and processed on the zirconia framework. Fluorapatite veneering ceramics were used as the control group (ZAC). Lithium disilicate crowns were fabricated as the veneering layer on the zirconia framework with different procedures: group A bonded via fired Crystal/Connect glass ceramic (FCC) and group B bonded via resin cement (BRC). Resin cement was used for cementation. All specimens were placed in a thermocycling unit and tested with a universal testing machine. Statistical analysis was performed using two-way ANOVA and Tukey B test. The mean of fracture resistance in the ZAC group was at the highest value (1787-3295N) of cohesive failure. The mean fracture resistance of the FCC group (1714-2809N) was higher than that of the BRC group (1565-1809N). The mean fracture resistance of the abutment diameter 5.5 mm (m) was at the highest value. The largest size of abutment (l) had a mean fracture resistance higher than the smallest size of abutment (s). The two main factors, veneering method and abutment size, had individual effects on fracture resistance. There were significant differences of fracture resistance in all groups with different veneering methods and different sizes of abutment. Adhesive failure was found in the BRC group. Meanwhile the FRC group was found to have both adhesive and combination failure. The mean fracture resistance of crowns fused with Crystal/Connect was significantly higher than that of crowns bonded with resin cement, but all the crowns had adequate fracture resist
Description
Implant Dentistry (Mahidol University 2016)
Degree Name
Master of Science
Degree Level
Master's degree
Degree Department
Faculty of Dentistry
Degree Discipline
Implant Dentistry
Degree Grantor(s)
Mahidol University