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ULTRASTRUCTURAL INVESTIGATIONS OF THE INTERFACE BETWEEN CULTURED PERIODONTAL LIGAMENT CELLS AND TITANIUM

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Abstract

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#ÃÊ·Ï#
A particular problem associated with osseointegrated implants is the fact that the
implants lack a periodontal ligament. Thereby, marginal inflammation around an implant
may cause more serious bone loss than does marginal inflammation around teeth with a
periodontal ligament. In addition, osseointegrated implants are ankylosed and do not
haute the same mobility as natural teeth with a periodontal ligament. Implants with a
periodontal ligament would eliminate these problems. In order to explore the possibility
of producing a periodontal ligament around titanium dental implants, a study of the
attachment of cultured periodontal ligament cells to titanium was carried out. Periodontal
ligament cells obtained from premolar teeth of individuals undergoing tooth extraction
for orthodontic reasons were cultured on titanium-coated epon blocks. Sections of the
blocks were cut perpendicular to the surface of the cell layer. Transmission electron
microscopy of the periodntal ligament cells/titanium interface showed that there was no
evidence of attachment at the cultured periodontal ligament cells titanium interface. The
microfilaments, commonly located adjacent to the titanium surface, run mostly parallel to
the titanium surface. The study showed that cultured periodontal ligament cells did not
create an attachment structure on a titanium surface similar to that of natural teeth.

Å°¿öµå

Periodontal ligament; implant; culture; titanium;

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