MARC details
| 000 -LEADER |
|---|
| fixed length control field |
03068nam a22003257i 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
|---|
| control field |
20211026102723.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
120326s2011 ua a f bm 00| 0 eng d |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
EG-NcFUE |
| Description conventions |
rda |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER |
|---|
| Classification number |
617.692 |
| Item number |
A.M.E |
| Edition number |
21 |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Ahmed, Mahmoud Mohamed Metwally |
| Relator term |
author |
| 245 10 - TITLE STATEMENT |
|---|
| Title |
Effect of Aging and Repressing on Fracture Resistance of Lithium Disilicate Glass Ceramic / |
| Statement of responsibility, etc |
By Mahmoud Mohamed Metwally Ahmed ; supervisors Ashraf Hussein Sherif, Gihan Abde Elhady El-Naggar, Amr Saleh El-Etreby. |
| 246 35 - VARYING FORM OF TITLE |
|---|
| Title proper/short title |
تأثير التعتيق وإعادة الضغط على مقاومة الكسر لسيراميك الليثيوم ثنائي السليكات الزجاجي |
| 264 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
|---|
| Date of publication, distribution, etc |
2019 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
86 pages : |
| Other physical details |
illustrations ; |
| Dimensions |
30 cm |
| 336 ## - CONTENT TYPE |
|---|
| Content type term |
text |
| Content type code |
txt |
| Source |
rdacontent |
| 337 ## - MEDIA TYPE |
|---|
| Media type term |
unmediated |
| Media type code |
n |
| Source |
rdamedia |
| 338 ## - CARRIER TYPE |
|---|
| Carrier type term |
volume |
| Carrier type code |
nc |
| Source |
rdacarrier |
| 502 ## - DISSERTATION NOTE |
|---|
| Dissertation note |
Thesis (M. Sc.)-Future University, Faculty of Oral and Dental Medicine, 2019. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
|---|
| Bibliography, etc |
Includes bibliographical references. |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc |
The recycling of e.max press left over buttons by dental laboratories is controversial with unknown clinical outcomes especially when it is functioning inside the oral cavity with subsequent exposure to temperature changes and cycles of mastication, Therefore, in our present study, the effect of ageing and repressing on fracture resistance of lithium disilicate glass ceramic was investigated and compared to newly pressed restorations and compared to non-aged newly pressed and re-pressed restorations under laboratory conditions. Twenty-eight epoxy resin duplicated die with 1.5 mm occlusal reduction and a shoulder finish line of I mm thickness were performed. A CAD/CAM was used to make wax patterns for the duplicated epoxy die to be pressed later and to ensure standardization protocols. The pressed and re-pressed crowns were then cemented to their corresponding teeth using resin cement after proper and strict surface treatment. 7 samples of both the pressed and re-pressed crown were subjected to fracture resistance without aging while the remaining samples underwent aging before fracture resistance by applying 5,000 thermal cycles and 120,000 chewing cycles. Afterwards teeth were statically compressed until fracture. Al data was collected, tabulated and statistically analyzed to detect any significant values among the different groups, The following results were obtained: Non aged samples had significantly higher fracture resistance (1634,494123.36) N than aged samples (1514.38+127.27) N, while re-pressed samples had significantly higher fracture resistance (1709.95+73.06) N than pressed samples (1559.03+117.5) N. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
prosthodontics. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Crowns (Dentistry) |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Bridges (Dentistry) |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Sherif, Ashraf Hussein |
| Relator term |
Supervisor. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
El-Naggar, Gihan Abde Elhady |
| Relator term |
supervisor |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
El-Etreby, Amr Saleh |
| Relator term |
Supervisor. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
|---|
| Materials specified |
DSpace electronic resource |
| Uniform Resource Identifier |
<a href="http://repository.fue.edu.eg/xmlui/handle/123456789/5691">http://repository.fue.edu.eg/xmlui/handle/123456789/5691</a> |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Koha item type |
Thesis |
| Source of classification or shelving scheme |
Dewey Decimal Classification |