• English
    • Norsk
  • English 
    • English
    • Norsk
  • Administration
View Item 
  •   Home
  • Øvrige samlinger
  • Høstingsarkiver
  • CRIStin høstingsarkiv
  • View Item
  •   Home
  • Øvrige samlinger
  • Høstingsarkiver
  • CRIStin høstingsarkiv
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Validation of contralateral premolars as the substrate for endodontic comparison studies

Johnsen, Gaute Floer; Sunde, Pia Titterud; Haugen, Håvard Jostein
Journal article; AcceptedVersion; Peer reviewed
View/Open
MANUSCRIPT_IEJ_MAJOR_REVISION_22012018.pdf (218.3Kb)
Year
2018
Permanent link
http://urn.nb.no/URN:NBN:no-63701

CRIStin
1564265

Is part of
Johnsen, Gaute Floer (2019) Contralateral Premolars: Validation of Symmetry. Doctoral thesis
Metadata
Show metadata
Appears in the following Collection
  • Det odontologiske fakultet [1049]
  • CRIStin høstingsarkiv [17026]
Original version
International Endodontic Journal. 2018, DOI: http://dx.doi.org/10.1111/iej.12902
Abstract
AIM: To use micro-CT technology and metrology software to validate the use of contralateral premolars as samples in endodontic comparison studies by comparing them before and after canal instrumentation with one instrumentation system. Furthermore, to determine if contralateral premolar roots will yield non-significantly different outcomes regarding shaping ability (volume), degree of twisting, and three-dimensional shape changes. The null-hypothesis (H0 ) is that there are no differences between the contralateral premolar roots pre- or post-instrumentation. METHODOLOGY: Twenty-eight extracted human contralateral premolars (n=44 contralateral roots) from 12 donor patients were scanned with microcomputed tomography before and after instrumentation. Root canal lengths (RCL) were measured visually using a dental operating microscope, electronic apex locator, and micro-CT scans. Data were analyzed statistically for differences between pre- and post-instrumentation. RESULTS: Instrumentation increased the volume of the canals significantly (P<0.05). Degree of twisting for a majority (83%) of the contralateral roots pairs did not change significantly (P>0.05). There was no significant difference (P>0.05) in the shape deviation analysis between contralateral pairs. There was no significant difference (P>0.05) for root canal length between the contralateral pairs for any of the three endometric methods. CONCLUSION: Contralateral premolar root canals were associated with similar changes in terms of volume, three-dimensional shape, and degree of twisting from pre- to post-instrumentation. There was no difference between the contralateral premolar root pairs pre- and post-instrumentation, and the study validates contralateral premolars as samples for root canal comparison studies. The null-hypothesis (H0 ) could not be rejected. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.

This is the peer reviewed version of the following article: Johnsen GF, Sunde PT, Haugen HJ. Validation of contralateral premolars as the substrate for endodontic comparison studies. International Endodontic Journal. which has been published in final form at https://doi.org/10.1111/iej.12902. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
 
Responsible for this website 
University of Oslo Library


Contact Us 
duo-hjelp@ub.uio.no


Privacy policy
 

 

For students / employeesSubmit master thesisAccess to restricted material

Browse

All of DUOCommunities & CollectionsBy Issue DateAuthorsTitlesThis CollectionBy Issue DateAuthorsTitles

For library staff

Login
RSS Feeds
 
Responsible for this website 
University of Oslo Library


Contact Us 
duo-hjelp@ub.uio.no


Privacy policy