MARC details
| 000 -LEADER |
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| fixed length control field |
05543nam a22003257i 4500 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
220704s2021 ua a|||f bm|| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
EG-NcFUE |
| Transcribing agency |
EG-NcFUE |
| Modifying agency |
EG-NcFUE |
| Description conventions |
rda |
| 041 0# - LANGUAGE CODE |
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| Language code of text/sound track or separate title |
eng |
| Language code of summary or abstract/overprinted title or subtitle |
ara |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER |
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| Edition number |
23 |
| Classification number |
617.643 |
| Item number |
S.O.A |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Salama, Omar Ahmed El-sayed |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
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| Title |
Alterations in the mechanical properties of different brands of Nickel Titanium orthodontic archwires following their exposure to the oral environment in adult patients with moderate crowding : |
| Remainder of title |
A Prospective Clinical Trial / |
| Statement of responsibility, etc |
By Omar Ahmed El-sayed Salama; Supervisors : Prof. Dr. Essam Nassif Professor in Orthodontics and Dentofacial Orthopedics Faculty of Dentistry Cairo University, Prof. Dr. Fouad El Sharaby Associate Professor in Orthodontics Faculty of Dentistry Cairo University, Dr. Amira Aboalnaga Lecturer in Orthodontics Faculty of Dentistry Cairo University |
| 246 35 - VARYING FORM OF TITLE |
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| Title proper/short title |
تغيرات الخصائص الميكانيكية لاسلاك التقويم بعلامات تجارية مختلفة المصنعة من النيكل تايتانيوم بعد تعرضها لبيئة الفم للبالغين الذين يعانون من إزدحام متوسط فى الاسنان : تجربة سريرية مستقبلية. |
| 264 #0 - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
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| Date of publication, distribution, etc |
2021 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
164 pages : |
| Other physical details |
illustrations (chiefly color) ; |
| Dimensions |
30 cm |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| Content type term |
text |
| Content type code |
txt |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| Media type term |
unmediated |
| Media type code |
n |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| Carrier type term |
volume |
| Carrier type code |
nc |
| 500 ## - GENERAL NOTE |
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| General note |
Supervisors : Prof. Dr. Essam Nassif Professor in Orthodontics and Dentofacial Orthopedics Faculty of Dentistry Cairo University, Prof. Dr. Fouad El Sharaby Associate Professor in Orthodontics Faculty of Dentistry Cairo University, Dr. Amira Aboalnaga Lecturer in Orthodontics Faculty of Dentistry Cairo University |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (M.Sc.)--Future University in Egypt, Faculty of Oral and Dental Medicine, Orthodantics Department , 2021. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc |
Includes bibliographical references (pages 127-148) |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc |
This present study was conducted to evaluate the change in mechanical <br/>properties of different brands of Nickel Titanium archwires following their <br/>exposure to oral environment.<br/>The 117 wires were randomly divided into three groups (A), (B) and (C) <br/>according to brand of 0.016” round NiTi archwires; each of 39 archwires.<br/>Group A: Dentaurum<br/>Group B: American Orthodontics<br/>Group C: IMD Orthodontics<br/>Each group was further subdivided into 3 different subgroups (1), (2) and <br/>(3) according to intervention method, each of 13 archwires.<br/>Subgroup 1 (IN VIVO): The wires were placed intraorally for 8-12 weeks<br/>for leveling and alignment stage. <br/>Subgroup 2 (AS RECEIVED): The wires were measured as received from <br/>the manufacturer (negative control group).<br/>Subgroup 3 (IN VITRO): The wires as received from the manufacturer <br/>were placed in artificial saliva for 8 weeks (positive control).<br/>The results of the study were:<br/>Condition, regardless of wire brand, had a statistically significant effect on <br/>mean plateau slope, resilience, elastic modulus.<br/>As regards American Orthodontics wire, there was a statistically significant <br/>increase in mean Plateau slope after storage in artificial saliva as well as a <br/>statistically significant increase after usage in the patient’s mouth. While for <br/>Dentaurum and IMD Orthodontics wires, there was no statistically significant <br/>change in mean Plateau slope after storage in artificial saliva followed by a <br/>statistically significant increase after usage in the patient’s mouth<br/>As regards American Orthodontics as well as IMD Orthodontics wires, there<br/>was a statistically significant decrease in mean resilience after storage in artificial <br/>saliva as well as a statistically significant decrease after usage in the patient’s <br/>mouth. While for Dentaurum wires, there was a statistically significant increase <br/>in mean resilience after storage in artificial saliva followed by a statistically <br/>significant decrease after usage in the patient’s mouth. There was no statistically <br/>significant difference between resilience of new wires and wires used in the oral <br/>cavity.<br/>As regards American Orthodontics as well as Dentaurum wires, there was <br/>no statistically significant change in mean modulus of elasticity after storage in <br/>artificial saliva followed by a statistically significant decrease after usage in the <br/>patient’s mouth. While for IMD Orthodontics wires, there was a statistically <br/>significant decrease in mean modulus of elasticity after storage in artificial saliva <br/>followed by non-statistically significant change after usage in the oral cavity. <br/>There was no permanent deformation present in any of the samples after <br/>comparing pre- and post-operative stereomicroscopic photographs.<br/>In summary of the in-vitro studies, Dentaurum group showed desirable <br/>properties such as the release of light, continuous and almost constant forces <br/>during an extended period of activation.<br/>Yet, the wire brand had no statistically significant effect on mean Little’s <br/>Index, so from the clinical perspective, all the wire brands performed the same in <br/>terms of resolution of crowding |
| 546 ## - LANGUAGE NOTE |
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| Language note |
Text in English, Abstract in English and Arabic . |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Orthodontics, Corrective. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Orthodontics. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Nassif, Essam |
| 9 (RLIN) |
33942 |
| Relator term |
Supervisor |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
El-Sharaby, Fouad Aly |
| 9 (RLIN) |
29801 |
| Relator term |
Supervisor |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Aboalnaga, Amira |
| 9 (RLIN) |
33943 |
| Relator term |
Supervisor |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
http://repository.fue.edu.eg/xmlui/handle/123456789/6060 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Item type |
Thesis |