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Published on: June 24, 2018
Ultrastructural study of tissues surrounding replanted teeth and dental implants
Kazuhiro Shioya1, Takashi Sawada, Yasuo Miake
1Department of Ultrastructural Science, Tokyo Dental College, Mihama-ku, Chiba City 261-8502, Japan.
Clinical Oral Implants Research
|April 29, 2009
Summary
Regenerating replanted teeth formed junctional epithelium and attachment apparatus. Dental implants developed a sealing layer of connective tissue cells, but lacked this specialized attachment. This highlights differences in healing processes.
Area of Science:
- Oral biology
- Regenerative medicine
- Biomaterials science
Background:
- The dentogingival border is crucial for tooth and implant stability.
- Understanding its ultrastructure after replantation or implantation is key for clinical success.
Purpose of the Study:
- To compare the ultrastructural healing of the dentogingival border in replanted teeth versus titanium implants.
Main Methods:
- Wistar rats underwent tooth replantation or titanium implant placement.
- Tissues were processed for ultrastructural observation using epoxy resin embedding.
Main Results:
- Replanted teeth showed junctional epithelium regeneration with basal lamina and hemidesmosomes by 4 weeks.
- Implants developed peri-implant epithelium, followed by a sealing layer of connective tissue cells by 8 weeks.
Conclusions:
- Replanted teeth demonstrated potential for regenerating the natural attachment apparatus.
- Dental implants formed a seal but did not regenerate junctional epithelium or the attachment apparatus.
