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Systematic evaluation of a tissue-engineered bone for maxillary sinus augmentation in large animal canine model

Identifieur interne : 005511 ( Main/Exploration ); précédent : 005510; suivant : 005512

Systematic evaluation of a tissue-engineered bone for maxillary sinus augmentation in large animal canine model

Auteurs : SHAOYI WANG [République populaire de Chine] ; ZHIYUAN ZHANG [République populaire de Chine] ; LUNGUO XIA [République populaire de Chine] ; JUN ZHAO [République populaire de Chine] ; XIAOJUAN SUN [République populaire de Chine] ; XIULI ZHANG [République populaire de Chine] ; DONGXIA YE [République populaire de Chine] ; Hasan Uludag [Canada] ; XINQUAN JIANG [République populaire de Chine]

Source :

RBID : Pascal:10-0119110

Descripteurs français

English descriptors

Abstract

The objective of this study is to systematically evaluate the effects of a tissue-engineered bone complex for maxillary sinus augmentation in a canine model. Twelve sinus floor augmentation surgeries in 6 animals were performed bilaterally and randomly repaired with the following 3 groups of grafts: group A consisted of tissue-engineered osteoblasts/beta-TCP complex (n = 4); group B consisted of beta-TCP alone (n=4); group C consisted of autogenous bone obtained from iliac crest as a positive control (n=4). All dogs had uneventful healings following the surgery. Sequential polychrome fluorescent labeling, maxillofacial CT, microhardness tests, as well as histological and histomorphometric analyses indicated that the tissue-engineered osteoblasts/beta-TCP complex dramatically promoted bone formation and mineralization and maximally maintained the height and volume of elevated maxillary sinus. By comparison, both control groups of beta-TCP or autologous iliac bone showed considerable resorption and replacement by fibrous or fatty tissue. We thus conclude that beta-TCP alone could barely maintain the height and volume of the elevated sinus floor, and that the transplantation of autogenous osteoblasts on beta-TCP could promote earlier bone formation and mineralization, maximally maintain height, volume and increase the compressive strength of augmented maxillary sinus. This tissue engineered bone complex might be a better alternative to autologous bone for the clinical edentulous maxillary sinus augmentation.


Affiliations:


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Le document en format XML

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<front>
<div type="abstract" xml:lang="en">The objective of this study is to systematically evaluate the effects of a tissue-engineered bone complex for maxillary sinus augmentation in a canine model. Twelve sinus floor augmentation surgeries in 6 animals were performed bilaterally and randomly repaired with the following 3 groups of grafts: group A consisted of tissue-engineered osteoblasts/beta-TCP complex (n = 4); group B consisted of beta-TCP alone (n=4); group C consisted of autogenous bone obtained from iliac crest as a positive control (n=4). All dogs had uneventful healings following the surgery. Sequential polychrome fluorescent labeling, maxillofacial CT, microhardness tests, as well as histological and histomorphometric analyses indicated that the tissue-engineered osteoblasts/beta-TCP complex dramatically promoted bone formation and mineralization and maximally maintained the height and volume of elevated maxillary sinus. By comparison, both control groups of beta-TCP or autologous iliac bone showed considerable resorption and replacement by fibrous or fatty tissue. We thus conclude that beta-TCP alone could barely maintain the height and volume of the elevated sinus floor, and that the transplantation of autogenous osteoblasts on beta-TCP could promote earlier bone formation and mineralization, maximally maintain height, volume and increase the compressive strength of augmented maxillary sinus. This tissue engineered bone complex might be a better alternative to autologous bone for the clinical edentulous maxillary sinus augmentation.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>Canada</li>
<li>République populaire de Chine</li>
</country>
</list>
<tree>
<country name="République populaire de Chine">
<noRegion>
<name sortKey="Shaoyi Wang" sort="Shaoyi Wang" uniqKey="Shaoyi Wang" last="Shaoyi Wang">SHAOYI WANG</name>
</noRegion>
<name sortKey="Dongxia Ye" sort="Dongxia Ye" uniqKey="Dongxia Ye" last="Dongxia Ye">DONGXIA YE</name>
<name sortKey="Jun Zhao" sort="Jun Zhao" uniqKey="Jun Zhao" last="Jun Zhao">JUN ZHAO</name>
<name sortKey="Jun Zhao" sort="Jun Zhao" uniqKey="Jun Zhao" last="Jun Zhao">JUN ZHAO</name>
<name sortKey="Lunguo Xia" sort="Lunguo Xia" uniqKey="Lunguo Xia" last="Lunguo Xia">LUNGUO XIA</name>
<name sortKey="Lunguo Xia" sort="Lunguo Xia" uniqKey="Lunguo Xia" last="Lunguo Xia">LUNGUO XIA</name>
<name sortKey="Shaoyi Wang" sort="Shaoyi Wang" uniqKey="Shaoyi Wang" last="Shaoyi Wang">SHAOYI WANG</name>
<name sortKey="Xiaojuan Sun" sort="Xiaojuan Sun" uniqKey="Xiaojuan Sun" last="Xiaojuan Sun">XIAOJUAN SUN</name>
<name sortKey="Xinquan Jiang" sort="Xinquan Jiang" uniqKey="Xinquan Jiang" last="Xinquan Jiang">XINQUAN JIANG</name>
<name sortKey="Xiuli Zhang" sort="Xiuli Zhang" uniqKey="Xiuli Zhang" last="Xiuli Zhang">XIULI ZHANG</name>
<name sortKey="Zhiyuan Zhang" sort="Zhiyuan Zhang" uniqKey="Zhiyuan Zhang" last="Zhiyuan Zhang">ZHIYUAN ZHANG</name>
<name sortKey="Zhiyuan Zhang" sort="Zhiyuan Zhang" uniqKey="Zhiyuan Zhang" last="Zhiyuan Zhang">ZHIYUAN ZHANG</name>
</country>
<country name="Canada">
<noRegion>
<name sortKey="Uludag, Hasan" sort="Uludag, Hasan" uniqKey="Uludag H" first="Hasan" last="Uludag">Hasan Uludag</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

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