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Chemical and biological integration of a mouldable bioactive ceramic material capable of forming apatite in vivo in teeth

Paper ID Volume ID Publish Year Pages File Format Full-Text
11701 754 2004 7 PDF Available
Title
Chemical and biological integration of a mouldable bioactive ceramic material capable of forming apatite in vivo in teeth
Abstract

Chemically bonded ceramics have several advantages compared with conventional ceramics to be used as biomaterials. Especially the possibilities to harden the material at room temperature and to control the rheology are very beneficial. This paper investigates the interface formed in vivo between a calcium aluminate based dental filling material and teeth. Class 1 occlusal fillings were made in wisdom teeth and extracted after up to four weeks. Polished cross-sections of the teeth were studied with scanning electron microscopy (SEM), focused ion beam microscopy (FIB) and transmission electron microscopy (TEM). In order to analyse the distribution of elements at the interface elemental mapping was performed using STEM and EDX.The results showed that a tight bond forms between the filling material and tooth and no gap could be found even at high magnification. A 100–200 nm wide zone with an increase in oxygen was detected in the enamel next to the filling. The zone was denser than the rest of the enamel. Elemental mapping indicated an increase of silicon and a decrease of Ca at the interface. Dark field imaging and EDX mapping showed that the calcium aluminate system formed apatite in situ during hardening through precipitation.

Keywords
Bioactivity; Apatite formation; Calcium aluminate; SEM; TEM; FIB
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Chemical and biological integration of a mouldable bioactive ceramic material capable of forming apatite in vivo in teeth
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 25, Issue 14, June 2004, Pages 2781–2787
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us