[Tissue response after preparation of implant cavity].
The purpose of this study is to discuss the structural changes of the surrounding tissue around the implant cavity when the influence of tooth extraction is still remaining. At 3 months after the extraction of the dog lower teeth, implant cavities were prepared. Histological examinations were performed on the specimens at 30 minutes, 2 days, 5 days and 10 days.


RESULTS
1) At 3 months after the tooth extraction, enhanced bone remodeling looks like a typical one in the compact bone area. 2) The bones formed after the extraction, by alternate resorption and formation with time, were replaced by higher differentiated ones. 3) At 5 days, by the implant cavity formation, bone addition is seen on the inner and outer surfaces of the compact bone. 4) Inside the extraction socket, the changes in the shape and structure of the trabeculae, which are influenced by the implant cavity preparation, are seen near the deep zone of the implant cavity and gradually with time they could be seen in the shallow zone and away from the implant cavity. 5) The newly formed trabeculae inside the implant cavity are mainly type I and on a part of the surface there is the addition of type II.
Matsumoto
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Department of Oral Anatomy, Faculty of Dentistry, Tokyo Medical and Dental University.
D000818:Animals; D001861:Bone Regeneration; D015921:Dental Implants; D004285:Dogs; D007568:Jaw / Q000166:cytology / Q000502:physiology*; D010012:Osteogenesis; D013997:Time Factors; D014081:Tooth Extraction
D015921:Dental Implants