Assessment of The Direction and Severity of Root canal Curvatures of the Permanent Mandibular First and Second Molars in a Sample of Egyptian Population using CBCT : (Record no. 169791)
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| 000 -LEADER | |
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| fixed length control field | 06957namaa22004211i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - أخر تعامل مع التسجيلة | |
| control field | 20250223033355.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 241228s2023 |||a|||f m||| 000 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloguing agency | EG-GICUC |
| Language of cataloging | eng |
| Transcribing agency | EG-GICUC |
| Modifying agency | EG-GICUC |
| Description conventions | rda |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| Language code of summary or abstract | eng |
| -- | ara |
| 049 ## - Acquisition Source | |
| Acquisition Source | Deposit |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 617.6 |
| 092 ## - LOCALLY ASSIGNED DEWEY CALL NUMBER (OCLC) | |
| Classification number | 617.6 |
| Edition number | 21 |
| 097 ## - Degree | |
| Degree | Ph.D |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Local Call Number | Cai01.09.05.Ph.D.2023.Na.A |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Authority record control number or standard number | Nada Ashraf Kamal Hafez, |
| Preparation | preparation. |
| 245 10 - TITLE STATEMENT | |
| Title | Assessment of The Direction and Severity of Root canal Curvatures of the Permanent Mandibular First and Second Molars in a Sample of Egyptian Population using CBCT : |
| Remainder of title | A Cross-Sectional Study/ |
| Statement of responsibility, etc. | Nada Ashraf Kamal Hafez ; Dr. Farid Medhat Farid Nashed , Dr. Yara Rabia Mohamed Ali Helaly. |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | تقييم اتجاه وشدة الانحناء فى قنوات الجذر فى الضرسين (الأول والثانى) فى الفك السفلى فى قطاع من المصريين باستخدام الأشعه المقطعية بالحاسوب مخروطية الشعاع : |
| Remainder of title | دراسة مقطعية/ |
| 264 #0 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE | |
| Date of production, publication, distribution, manufacture, or copyright notice | 2023. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 166 pages : |
| Other physical details | illustrations ; |
| Dimensions | 25 cm. + |
| Accompanying material | CD. |
| 336 ## - CONTENT TYPE | |
| Content type term | text |
| Source | rda content |
| 337 ## - MEDIA TYPE | |
| Media type term | Unmediated |
| Source | rdamedia |
| 338 ## - CARRIER TYPE | |
| Carrier type term | volume |
| Source | rdacarrier |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (Ph.D)-Cairo University, 2023. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE | |
| Bibliography, etc. note | Bibliography: pages 152-164. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | This retrospective study was conducted on CBCT scans of mandibular permanent first <br/>and second molars of a sample of the Egyptian population to assess the variations in the number, <br/>location, direction, & severity of curvatures of the root canal system in the bucco-lingual and <br/>mesio-distal dimensions. Based on sample size calculation, a total of 373 root canals of <br/>mandibular first and second permanent molars from 40 CBCT belonging to Egyptian individuals <br/>were examined including a total of 106 molars, 50 mandibular first molars and 56 mandibular <br/>second molars of 21 female patients and 19 male patients. The scans were viewed using <br/>Planmeca Romexis® Viewer and were analyzed in the 3 main orthogonal planes (axial, coronal <br/>and sagittal). Root canal curvatures were assessed in 2 planes: the curvatures in the mesio-distal <br/>dimension from the sagittal section and the curvatures in the bucco-lingual dimension from the <br/>coronal sections. <br/>The data recorded and analyzed from the scans were the number of curvatures per root <br/>canal in each of the coronal and sagittal cuts, the direction of curvatures (mesial or distal) in <br/>sagittal cuts, (buccal or lingual) in coronal cuts, the location of curvatures per root canal <br/>(cervical, middle, apical) in each of sagittal and coronal cuts, the degree of severity of curvatures <br/>using Schneider’s method if one curvature was present per root canal, and Cunningham and <br/>Senia’s method for root canals with more than one curvature, the association between gender <br/>and root curvature severity and presence of multiple curves per root canal was assessed as well<br/>and most prevalent location of single root canal curves.<br/>166<br/>The results of our study showed that:<br/>• Multiple curvatures are proved to be prevalent in the root canals of mandibular <br/>1<br/>st and 2nd molars.<br/>• Apical root canal third predominantly show curvatures among mandibular 1st<br/>and 2nd molars.<br/>• The majority of curves were moderately to severely angulated. <br/>• The curvatures showed a wide diversity in direction among different root <br/>canals of mandibular 1st and 2nd molars.<br/>• There is no significant difference between male and female regarding the <br/>prevalence of severe curvatures in most of the root canals.<br/>• There is no association between gender and presence of multiple curvatures along <br/>the canal path in most of the root canals.<br/>• Single curvature in the root canal can be located in any part of the canal with no <br/>preference for cervical, middle or apical thirds. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | لقد أجُْرَيت الدراسة الحالية على فحوصات الأشعة المقطعية بالحاسوب مخروطيةالشعاع للأضراس الدائمة الأولى والثانية بالفك السفلي لعينة من المصريين لتقييم التنوع في عدد وموقع واتجاه ودرجة انحناءالمنحنيات المتواجدة في القنوات الجذرية في الاتجاهات المختلفة .<br/>وفقا لمعايير اختيار العينة، تم تضمين مجموع ٣٧٣ قناة جذري ة لعدد ١٠٦ من الاضراس الدائمة الأولى )٥٠( والثاني ة )٥٦( بالفك السفلي من ٤٠ صورة أشعة مقطعية تخص ١٩ ذكر و٢١ أنثى. تم عرض الاشعة باستخدام برنامجPlanmeca Romexis Viewer ®، حيث تم تقييم الصورة في المستويات السهمي و الاكليلي و العرضي المصححة.تم قياس درجة الانحناء باستخدامSchneider’s method في حال وجود منحنى واحد بالقناة الجذرية و تم قياس درجة الانحناء باستخدام Cunningham and Senia’s methodفي حال وجودالعديد من المنحنيات فى القنوات الجذرية.و تم دراسة ما اذا كان هناك ارتباط بين النوع )ذكر او نثى( و بين وجود منحنيات بدرجة شديدة.<br/><br/>وكشفت نتائج الدراسة الحالية أ ن; <br/>• وجود العديد من المنحنيات فى القنوات الجذرية فى الضرسين الاول و الثانى فى الفك السفلى. <br/>• الجزء السفلى من القنات هو الاكثر عرضة لتواجد المنحنيات. <br/>• تتراوح درجة معظم الانحنائات ما بين المتوسطة و الشديده. <br/>• لا يوجد اتجاه معين للمنحنيات هو الاكثر شيوعا بل هناك تنوع كبير فى الاتجاهات. <br/>• لا يوجد ارتباط وثيق بين النوع )ذكر او نثى( و بين وجود منحنيات شديدة الدرجة. <br/>• لا يوجد ارتباط وثيق بين النوع )ذكر او نثى( و بين وجودمنحنيات عديدة فى القناة الجذرية. <br/>• فى حال وجود منحنى واحد بالقناة الجذرية يمكن تواجده فى اى جزء من القناه. <br/> |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
| Issues CD | Issues also as CD. |
| 546 ## - LANGUAGE NOTE | |
| Text Language | Text in English and abstract in Arabic & English. |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Dentistry |
| Source of heading or term | qrmak |
| 653 #0 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | permanent mandibular |
| -- | CBCT |
| -- | molars |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Farid Medhat Farid Nashed |
| Relator term | thesis advisor. |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Yara Rabia Mohamed Ali Helaly |
| Relator term | thesis advisor. |
| 900 ## - Thesis Information | |
| Grant date | 01-01-2023 |
| Supervisory body | Farid Medhat Farid Nashed |
| -- | Yara Rabia Mohamed Ali Helaly |
| Universities | Cairo University |
| Faculties | Faculty of Dentistry |
| Department | Department of Oral and Maxillofacial Radiology |
| 905 ## - Cataloger and Reviser Names | |
| Cataloger Name | Aya Mohamed |
| Reviser Names | Huda |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Edition | 21 |
| Suppress in OPAC | No |
| Source of classification or shelving scheme | Home library | Current library | Date acquired | Inventory number | Full call number | Barcode | Date last seen | Effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 28.12.2024 | 89829 | Cai01.09.05.Ph.D.2023.Na.A | 01010110089829000 | 28.12.2024 | 28.12.2024 | Thesis |