MARC details
| 000 -LEADER |
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| fixed length control field |
03241cam a2200313 a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
EG-GiCUC |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
180816s2017 ua dh f m 000 0 eng d |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
EG-GiCUC |
| Language of cataloging |
eng |
| Transcribing agency |
EG-GiCUC |
| 041 0# - LANGUAGE CODE |
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| Language code of text/sound track or separate title |
eng |
| 049 ## - LOCAL HOLDINGS (OCLC) |
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| Holding library |
Deposite |
| 097 ## - Thesis Degree |
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| Thesis Level |
M.Sc |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) |
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| Classification number |
Cai01.09.09.M.Sc.2017.No.F |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Noura Mokhtar Nasr Sheded Alsedawy |
| 245 10 - TITLE STATEMENT |
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| Title |
Fracture toughness and hardness of vita suprinity CAD/CAM with and without cyclic loading and thermocycling : |
| Remainder of title |
An in vitro study / |
| Statement of responsibility, etc. |
Noura Mokhtar Nasr Sheded Alsedawy ; Supervised Samir Ziden , Ashraf Taher |
| 246 15 - VARYING FORM OF TITLE |
|---|
| Title proper/short title |
متانه الكسر والقساوه للترميمات المصنعه من ماده ( فيتا سوبرينتى) بتاثير التحميل الدورى والحرارى وبدونه : |
| Remainder of title |
دراسة معملية |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Place of publication, distribution, etc. |
Cairo : |
| Name of publisher, distributor, etc. |
Noura Mokhtar Nasr Sheded Alsedawy , |
| Date of publication, distribution, etc. |
2017 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
121 P. : |
| Other physical details |
charts , facsimiles ; |
| Dimensions |
25cm |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine- Department of Prosthodontics |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
The aim of this study is to evaluate the fracture toughness and hardness of Vita Suprinity with and without cyclic loading and thermocycling (An in-vitro study) -24 plates of 3mm thickness were cut by an isomet cutting machine. All the specimens were sintered and then auto-glazed according to manufacturer's instructions. -All specimens were stored in distilled water at 37oC for 24 hours in sealed containers in incubator. -Half of the specimens were exposed to thermal cycling with number of cycles was 500 cycle (46) , Dwell times were 25 s. in each water bath with a lag time 10 s. and The low-temperature point was 5 0C). The high temperature point was 55 0C. (46-47) and also were exposed to cyclic loading in chewing simulator machine in which Twelve specimens of experimental ceramic group were exposed to the mouth-motion fatigue at load of 50 N for 20,000 cycles with a frequency of 1.6 Hz -The other half was left with its glazed surface without any aging procedure thermocycling and cyclic loading. -Surface hardness and fracture toughness were measured before and after storage where the surface hardness was measured through Vicker{u2018}s indentation: three indentations were made in each sample and the mean was calculated for each using this equation. HV=1.854 P/d Fracture toughness was calculated by the indentation method through this equation. KIC = 0.016(E/H)-The basis of the indentation technique is a series of cracks that form under heavy loading for a certain duration in a brittle material around a Vickers diamond indenter. When viewed superiorly the cracks appear to emanate from each of the corners of the indentation. The size of these cracks expressed by the surface dimension {u2015}c,{u2016} increases with an elevating indentation load and is an inverse function of fracture toughness. The data was obtained and the results were tabulated |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE |
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| Additional physical form available note |
Issued also as CD |
| 653 #4 - INDEX TERM--UNCONTROLLED |
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| Uncontrolled term |
CAD/CAM |
| 653 #4 - INDEX TERM--UNCONTROLLED |
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| Uncontrolled term |
Cyclic loading and thermocycling |
| 653 #4 - INDEX TERM--UNCONTROLLED |
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| Uncontrolled term |
Vita suprinity |
| 700 0# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Ashraf Taher , |
| Relator term |
|
| 700 0# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Samir Ziden , |
| Relator term |
|
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) |
|---|
| Cataloger |
Nazla |
| Reviser |
Revisor |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) |
|---|
| Cataloger |
Shimaa |
| Reviser |
Cataloger |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Dewey Decimal Classification |
| Koha item type |
Thesis |
