Displaced premolars in panoramic radiography: fact or fallacy?

Nohadani, Nasila; Pohl, Yango; Ruf, Sabine (2008). Displaced premolars in panoramic radiography: fact or fallacy? Angle orthodontist, 78(2), pp. 309-16. Huntsville, Tex.: Angle Orthodontists Research and Education Foundation 10.2319/030807-117.1

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OBJECTIVE: To test the null hypothesis that there is no difference between premolar position visualized on panoramic radiographs (PRs) and lateral headfilms (LHs). MATERIALS AND METHODS: The prevalence of differences in the direction of crown angulation between PR and LH was assessed. Furthermore, brass wire markers with different sagittal and transverse angulations were placed in a dry skull. With the markers in place, LHs and PRs were taken. RESULTS: A difference in the direction of crown angulation of unerupted second premolars between PR and LH occurred in 19.5% of patients. The reason for the angulation differences is a buccolingual orientation of the tooth, which appears as a mesiodistal angulation on the PR. CONCLUSION: The null hypothesis was rejected since in one-fifth of the patients premolar projection differs between the panoramic radiograph and the lateral headfilm.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Orthodontics

UniBE Contributor:

Nohadani, Nasila

ISSN:

0003-3219

Publisher:

Angle Orthodontists Research and Education Foundation

Language:

English

Submitter:

Eveline Carmen Schuler

Date Deposited:

04 Oct 2013 15:02

Last Modified:

25 Jan 2017 12:17

Publisher DOI:

10.2319/030807-117.1

PubMed ID:

18251606

Web of Science ID:

000253238800020

URI:

https://boris.unibe.ch/id/eprint/26837 (FactScience: 89997)

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