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Partial pulp necrosis caused by excessive orthodontic force
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Case Report Partial pulp necrosis caused by excessive orthodontic force
Min-Young Kim, DDS, Seung-Jong Lee, DDS, PhD, Il-Young Jung, DDS, PhD, Euiseong Kim, DDS, PhD
Journal of Korean Academy of Conservative Dentistry 2011;36(2):149-153.
DOI: https://doi.org/10.5395/JKACD.2011.36.2.149
Published online: March 31, 2011

Department of Conservative Dentistry, Yonsei University College of Dentistry, Microscope Center, Seoul, Korea.

Correspondence to Euiseong Kim, DDS, MSD, PhD. Professor, Department of Conservative Dentistry, Yonsei University College of Dentistry, 250 Seongsanno, Seodaemun-gu, Seoul, Korea 120-752. TEL,+82-2-2228-8701; FAX,+82-2-313-7575; andyendo@yuhs.ac
• Received: January 3, 2011   • Revised: January 10, 2011   • Accepted: January 10, 2011

Copyright © 2011 Korean Academy of Conservative Dentistry

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  • As the dental pulp is encased with a rigid, noncompliant shell, changes in pulpal blood flow or vascular tissue pressure can have serious implication for the health of pulp. Numerous studies have demonstrated that orthodontic force application may influence both blood flow and cellular metabolism, leading degenerative and/or inflammatory responses in the dental pulp. The aim of this case report is to present a case about tooth with chronic periapical abscess which showed normal vital responses. Excessive orthodontic force is thought to be the prime cause of partial pulp necrosis. Owing to remaining vital tissue, wrong dianosis can be made, and tooth falsely diagnosed as vital may be left untreated, causing the necrotic tissue to destroy the supporting tissuses. Clinician should be able to utilize various diagnostic tools for the precise diagnosis, and be aware of the endodontic-orthodontic inter-relationship.
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Figure 1
Pre-operative clinical photo.
jkacd-36-149-g001.jpg
Figure 2
Pre-operative periapical x-ray.
jkacd-36-149-g002.jpg
Figure 3
Pre-operative conebeam CT image. CT, computed tomograph.
jkacd-36-149-g003.jpg
Figure 4
Pre-operative conebeam CT image. CT, computed tomograph.
jkacd-36-149-g004.jpg
Figure 5
Cavity after IRM removal. IRM, intermediate restorative material.
jkacd-36-149-g005.jpg
Figure 6
Pulp chamber immediate after access opening.
jkacd-36-149-g006.jpg
Figure 7
Periapical x-ray after canal filling.
jkacd-36-149-g007.jpg
Figure 8
6 month follow up-periapical x-ray.
jkacd-36-149-g008.jpg
Figure 9
6 month follow up-conebeam CT image. CT, computed tomograph.
jkacd-36-149-g009.jpg

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      Partial pulp necrosis caused by excessive orthodontic force
      Image Image Image Image Image Image Image Image Image
      Figure 1 Pre-operative clinical photo.
      Figure 2 Pre-operative periapical x-ray.
      Figure 3 Pre-operative conebeam CT image. CT, computed tomograph.
      Figure 4 Pre-operative conebeam CT image. CT, computed tomograph.
      Figure 5 Cavity after IRM removal. IRM, intermediate restorative material.
      Figure 6 Pulp chamber immediate after access opening.
      Figure 7 Periapical x-ray after canal filling.
      Figure 8 6 month follow up-periapical x-ray.
      Figure 9 6 month follow up-conebeam CT image. CT, computed tomograph.
      Partial pulp necrosis caused by excessive orthodontic force

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