Response of the tooth-periodontal ligament-bone complex to load : A microCT study of the minipig molar
Ben-Zvi, Yehonatan ; Maria, Raquel ; Pierantoni, Maria LU
; Brumfeld, Vlad
; Shahar, Ron
and Weiner, Steve
(2019)
In Journal of Structural Biology
205(2).
p.155-162
- Abstract
One strategy evolved by teeth to avoid irreversible damage is to move and deform under the loads incurred during mastication. A key component in this regard is the periodontal ligament (PDL). The role of the bone underlying the PDL is less well defined. We study the interplay between the PDL and the underlying alveolar bone when loaded in the minipig. Using an Instron loading device we confirmed that the force-displacement curves of the molars and premolars of relatively fresh minipig intact mandibles are similar to those obtained for humans and other animals. We then used this information to obtain 3D images of the teeth before and after loading the tooth in a microCT such that the load applied is in the third linear part of the force... (More)
One strategy evolved by teeth to avoid irreversible damage is to move and deform under the loads incurred during mastication. A key component in this regard is the periodontal ligament (PDL). The role of the bone underlying the PDL is less well defined. We study the interplay between the PDL and the underlying alveolar bone when loaded in the minipig. Using an Instron loading device we confirmed that the force-displacement curves of the molars and premolars of relatively fresh minipig intact mandibles are similar to those obtained for humans and other animals. We then used this information to obtain 3D images of the teeth before and after loading the tooth in a microCT such that the load applied is in the third linear part of the force displacement curve. We observed that at many locations there is a complimentary topography of the cementum and alveolar bone surface, strongly suggesting an active interplay between the tooth and the bone during mastication. We also observed that the loaded tooth does not come into direct contact with the underlying bone surface. A highly compressed layer of PDL is present between the tooth and the bone. The structure of the bone in the upper furcation region has a unique appearance with little obvious microstructure, abundant pores that have a large size range and at many locations the bone at the PDL interface has a needle-like shape. We conclude that there is a close interaction between the tooth, the PDL and the underlying alveolar bone during mastication. The highly compressed PDL layer that separates the tooth from the bone may fulfill a key shock absorbing function.
(Less)
- author
- Ben-Zvi, Yehonatan
; Maria, Raquel
; Pierantoni, Maria
LU
; Brumfeld, Vlad
; Shahar, Ron
and Weiner, Steve
- publishing date
- 2019-02-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Animals, Dental Cementum/diagnostic imaging, Mandible/diagnostic imaging, Periodontal Ligament/diagnostic imaging, Swine, Swine, Miniature, Tooth/diagnostic imaging, X-Ray Microtomography
- in
- Journal of Structural Biology
- volume
- 205
- issue
- 2
- pages
- 8 pages
- publisher
- Elsevier
- external identifiers
-
- pmid:30639926
- scopus:85060294497
- ISSN
- 1095-8657
- DOI
- 10.1016/j.jsb.2019.01.002
- language
- English
- LU publication?
- no
- additional info
- Copyright © 2019. Published by Elsevier Inc.
- id
- af543617-c24e-422c-9f83-09c5686c99b2
- date added to LUP
- 2023-10-19 15:44:06
- date last changed
- 2024-06-14 07:45:49
@article{af543617-c24e-422c-9f83-09c5686c99b2,
abstract = {{<p>One strategy evolved by teeth to avoid irreversible damage is to move and deform under the loads incurred during mastication. A key component in this regard is the periodontal ligament (PDL). The role of the bone underlying the PDL is less well defined. We study the interplay between the PDL and the underlying alveolar bone when loaded in the minipig. Using an Instron loading device we confirmed that the force-displacement curves of the molars and premolars of relatively fresh minipig intact mandibles are similar to those obtained for humans and other animals. We then used this information to obtain 3D images of the teeth before and after loading the tooth in a microCT such that the load applied is in the third linear part of the force displacement curve. We observed that at many locations there is a complimentary topography of the cementum and alveolar bone surface, strongly suggesting an active interplay between the tooth and the bone during mastication. We also observed that the loaded tooth does not come into direct contact with the underlying bone surface. A highly compressed layer of PDL is present between the tooth and the bone. The structure of the bone in the upper furcation region has a unique appearance with little obvious microstructure, abundant pores that have a large size range and at many locations the bone at the PDL interface has a needle-like shape. We conclude that there is a close interaction between the tooth, the PDL and the underlying alveolar bone during mastication. The highly compressed PDL layer that separates the tooth from the bone may fulfill a key shock absorbing function.</p>}},
author = {{Ben-Zvi, Yehonatan and Maria, Raquel and Pierantoni, Maria and Brumfeld, Vlad and Shahar, Ron and Weiner, Steve}},
issn = {{1095-8657}},
keywords = {{Animals; Dental Cementum/diagnostic imaging; Mandible/diagnostic imaging; Periodontal Ligament/diagnostic imaging; Swine; Swine, Miniature; Tooth/diagnostic imaging; X-Ray Microtomography}},
language = {{eng}},
month = {{02}},
number = {{2}},
pages = {{155--162}},
publisher = {{Elsevier}},
series = {{Journal of Structural Biology}},
title = {{Response of the tooth-periodontal ligament-bone complex to load : A microCT study of the minipig molar}},
url = {{http://dx.doi.org/10.1016/j.jsb.2019.01.002}},
doi = {{10.1016/j.jsb.2019.01.002}},
volume = {{205}},
year = {{2019}},
}