Volume 18, Issue 1 pp. 146-160
ARTICLE

Differences in Healing Patterns of the Bone-Implant Interface between Immediately and Delayed-Placed Titanium Implants in Mouse Maxillae

Taisuke Watanabe DDS

Taisuke Watanabe DDS

Graduate student

Division of Anatomy and Cell Biology of the Hard Tissue, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan

These authors contributed equally to this work.Search for more papers by this author
Eizo Nakagawa DDS, PhD

Eizo Nakagawa DDS, PhD

postdoctoral fellows

Division of Anatomy and Cell Biology of the Hard Tissue, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan

These authors contributed equally to this work.Search for more papers by this author
Kotaro Saito DDS, PhD

Kotaro Saito DDS, PhD

postdoctoral fellows

Division of Anatomy and Cell Biology of the Hard Tissue, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan

Search for more papers by this author
Hayato Ohshima DDS, PhD

Corresponding Author

Hayato Ohshima DDS, PhD

professor

Division of Anatomy and Cell Biology of the Hard Tissue, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan

Corresponding Author: Prof. Hayato Ohshima, Division of Anatomy and Cell Biology of the Hard Tissue, Niigata University Graduate School of Medical and Dental Sciences, 2-5274 Gakkocho-dori, Chuo-ku, Niigata 951-8514, Japan; e-mail: [email protected]Search for more papers by this author
First published: 15 April 2015
Citations: 11

Abstract

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 (M1) from 4-week-old mice were extracted and replaced with the implant following drilling (immediate-placement group). In contrast, M1 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.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.