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Differences in Healing Patterns of the Bone‐Implant Interface between Immediately and Delayed‐Placed Titanium Implants in Mouse Maxillae
Author(s) -
Watanabe Taisuke,
Nakagawa Eizo,
Saito Kotaro,
Ohshima Hayato
Publication year - 2016
Publication title -
clinical implant dentistry and related research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.338
H-Index - 85
eISSN - 1708-8208
pISSN - 1523-0899
DOI - 10.1111/cid.12280
Subject(s) - osseointegration , implant , maxilla , dentistry , dental alveolus , medicine , alveolar process , dental implant , titanium , premolar , molar , materials science , surgery , metallurgy
Background There are no available data on the healing process at the bone‐implant interface after immediate implant placement. Purpose This study aimed to establish an animal experimental model of titanium implants placed in mouse maxillae and compare the healing pattern of the bone‐implant interface after immediate implant placement with that after delayed implant placement. Materials and Methods Maxillary first molars ( M 1) from 4‐week‐old mice were extracted and replaced with the implant following drilling (immediate‐placement group). In contrast, M 1 from 2‐week‐old mice were extracted, followed by drilling and implantation after 4 weeks (delayed‐placement group). The decalcified samples at 0–28 days after implantation were processed by immunohistochemistry, terminal deoxynucleotidyl transferase‐mediated dUTP nick end labeling assay, and tartrate‐resistant acid phosphatase histochemistry. The elements and bone volume of undecalcified samples were quantitatively analyzed by an electron probe microanalyzer. Results Osseointegration was completed by 28 days after the procedure in both groups. There were no differences in contact area, bone loss at the cervical area, or rate of calcification at the bone‐implant interface between the two groups. Conclusions This study found no significant differences in the chronological healing process at the bone‐implant interface between the two groups at the cellular level.