MARC details
| 000 -LEADER |
|---|
| fixed length control field |
03744nam a22002897i 4500 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
120329s2019 ua a f bm 000 0 eng d |
| 041 0# - LANGUAGE CODE |
|---|
| 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 |
|---|
| Classification number |
617.643 |
| Item number |
A.A.F |
| Edition number |
22 |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Al Mohammad, Ahmed Fareed, |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
|---|
| Title |
Evaluation of external root resorption during maxillary and mandibular canine retraction at 2, 4, 6 and 8 weeks reactivation intervals using power chain in 1st premolars extraction cases |
| Remainder of title |
a Randomized Controlled Trial / |
| Statement of responsibility, etc |
By Ahmad Fareed Al Mohammad (BDS (2012), Damascus University, Department of Orthodontics, Faculty of Oral and Dental Medicine, Future University in Egypt) |
| 246 35 - VARYING FORM OF TITLE |
|---|
| Title proper/short title |
تقييم الامتصاص الخارجى للجذر أثناء ارجاع الناب العلوي والسفلي خلال اعادة تفعيل قوة المطاط السلسلس كل 2،4، 6 و8 أسابيع في حالات قلع الضواحك الاولى: دراسة عشوائية مراقبة |
| 264 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
|---|
| Date of publication, distribution, etc |
2019 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
67 pages, 2 pages : |
| Other physical details |
illustrations (some color) ; |
| 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 |
| 500 ## - GENERAL NOTE |
|---|
| General note |
Supervisors : Dr. Nagwa Helmy Al-Mangoury (Professor of Orthodontic, Faculty of Oral and Dental Medicine,Future University in Egypt), Dr. Hend Salah El Sayed (Associate Professor of Orthodontics and Pediatric Dentistry, National Research Centre, Egypt)<br/> |
| 502 ## - DISSERTATION NOTE |
|---|
| Dissertation note |
Thesis (M. Sc.)-Future university in Egypt, faculty of oral and dental medicine, Department Orthodontics, 2019. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
|---|
| Bibliography, etc |
Includes bibliographical reference |
| 520 3# - SUMMARY, ETC. |
|---|
| Summary, etc |
Introduction: root resorption is an iatrogenic undesirable consequence of the<br/>orthodontic treatment. The purpose of this study is to evaluate the external root<br/>resorption during maxillary and mandibular canine retraction at 2, 4, 6 and 8<br/>weeks reactivation intervals using power chains. Methods: The sample<br/>consisted of 30 patients (114 quadrants) with bimaxillary protrusion or severe<br/>crowding requiring first premolar extraction. The sample was divided into four<br/>groups. Group I activation every 2weeks, group II activation every 4 weeks,<br/>group III activation every 6 weeks and group IV activation every 8 weeks.<br/>Canine retraction was initiated by extending the power chain from the power<br/>arm to the mini implant in each quadrant with 150 g of force applied. CBCT<br/>was taken for each patient before canine retraction (T0) and after 6 months<br/>(T1).The amount of root resorption assessed by direct vertical measurements of<br/>the canine length at T0 and T1. Results: Group I showed the greatest amount of<br/>root shortening (1.26 mm) while Group IV showed the least amount of root<br/>shortening (0.57 mm). Group III and IV showed (1.08 mm) and (0.72 mm) of<br/>root shortening respectively. There was a significant difference in the means of<br/>root resorption between the four groups [P˂0.001]. Conclusion: Different<br/>periods of power chains reactivation during canine retraction produce varying<br/>amounts of root resorption. According to the results of this study:<br/>1. Root resorption progressively increased with the increase of the reactivation<br/>frequency.<br/>2. The maximum root resorption occurring at the 2 weeks reactivation interval<br/>was within the range reported in previous literature.<br/>3. The more frequent activations of canine retraction will result in an increased<br/>amount of the inflammatory phase of orthodontic tooth movement without an<br/>appropriate healing stage which increases the root resorption process. |
| 546 ## - LANGUAGE NOTE |
|---|
| Language note |
Text in English, Abstract Arabic and English |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Orthodontics |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Maxilla |
| General subdivision |
surgery |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
oral surgery. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Teeth |
| General subdivision |
Diseases. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Item type |
Thesis |