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Utilising radiographic incisor crown markers to determine incisor inclination on lateral headfilms - and experimental study on extracted teeth
Thesis (MChD (Orthodontics))--University of Pretoria, 2005.
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University of Pretoria
2013
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| _version_ | 1867613567703842816 |
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| access_status_str | Open Access |
| author2 | Zietsman, S.T. |
| author_browse | Zietsman, S.T. |
| author_facet | Zietsman, S.T. |
| collection | Thesis |
| dc_rights_str_mv | © 2003, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Thesis (MChD (Orthodontics))--University of Pretoria, 2005. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/22912 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:38:12.302Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/22912 Utilising radiographic incisor crown markers to determine incisor inclination on lateral headfilms - and experimental study on extracted teeth Zietsman, S.T. dippies5@worldonline.co.za Dippenaar, Alfred Meyer Cephalometry Incisor inclination Dental radiographic markers Radiographic markers Determining incisor inclination Lateral cephalometric radiographs Orthodontics UCTD Thesis (MChD (Orthodontics))--University of Pretoria, 2005. Inaccuracy in landmark identification is regarded as the most important source of error in cephalometry. Better definition of landmarks should therefore contribute to better clinical decisions and research validity. This study primarily comprised of an ex vivo investigation on 50 extracted lower incisor teeth to determine whether radiopaque markers could be utilised to accurately assess lower incisor inclination. Fifty extracted lower incisor teeth were mounted onto a Perspex sheet. Radiopaque markers, manufactured from 1mm wide strips of lead film from used peri-apical radiographs, were attached to the crowns of the mounted teeth. A lateral cephalometric radiograph was taken in accordance to standard radiographic procedures (radiograph A). This showed the true inclination of the teeth. A second radiograph was taken with the roots obscured (radiograph B). Three observers traced the inclinations of the teeth on radiograph B (from incisor edge through the middle of the labio-lingual crown-root junction). The determination was done on two different occasions and the assessments compared with the true inclination. Comparative statistical analysis was applied to the readings and the results indicated that this method compared favourably with other methods to determine incisor inclination. In addition, clinical application of opaque markers to the teeth of patients demonstrated the following: it indicated exactly which tooth was being assessed, provided clear definition of the anatomical crown in the sagittal plane and served as a constant reference point for clinical, study model and cephalometric measurements. decisions and research validity. Opaque radiographic markers on teeth can contribute to more accurate cephalometric measurements in orthodontics, leading to better diagnoses, treatment planning and research validity. Orthodontics unrestricted 2013-09-06T14:00:01Z 2004-03-02 2013-09-06T14:00:01Z 2003-03-06 2005-03-02 2004-03-02 Thesis Dippenaar, A 2003, Utilising radiographic incisor crown markers to determine incisor inclination on lateral headfilms - and experimental study on extracted teeth, MChD thesis, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/22912 > http://hdl.handle.net/2263/22912 http://upetd.up.ac.za/thesis/available/etd-03022004-085319/ © 2003, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Cephalometry Incisor inclination Dental radiographic markers Radiographic markers Determining incisor inclination Lateral cephalometric radiographs Orthodontics UCTD Utilising radiographic incisor crown markers to determine incisor inclination on lateral headfilms - and experimental study on extracted teeth |
| title | Utilising radiographic incisor crown markers to determine incisor inclination on lateral headfilms - and experimental study on extracted teeth |
| title_full | Utilising radiographic incisor crown markers to determine incisor inclination on lateral headfilms - and experimental study on extracted teeth |
| title_fullStr | Utilising radiographic incisor crown markers to determine incisor inclination on lateral headfilms - and experimental study on extracted teeth |
| title_full_unstemmed | Utilising radiographic incisor crown markers to determine incisor inclination on lateral headfilms - and experimental study on extracted teeth |
| title_short | Utilising radiographic incisor crown markers to determine incisor inclination on lateral headfilms - and experimental study on extracted teeth |
| title_sort | utilising radiographic incisor crown markers to determine incisor inclination on lateral headfilms and experimental study on extracted teeth |
| topic | Cephalometry Incisor inclination Dental radiographic markers Radiographic markers Determining incisor inclination Lateral cephalometric radiographs Orthodontics UCTD |
| url | http://hdl.handle.net/2263/22912 http://upetd.up.ac.za/thesis/available/etd-03022004-085319/ |