Kyushu University Academic Staff Educational and Research Activities Database
Researcher information (To researchers) Need Help? How to update
Yasunori AYUKAWA Last modified date:2018.11.09

Associate Professor / Division of Oral Rehabilitation
Department of Dental Science
Faculty of Dental Science

Graduate School
Undergraduate School

Academic Degree
Field of Specialization
Removable Prosthodontics
Outline Activities
Oral implant is an artificial tooth placed in the jaw bone. Implant material requires both excellent mechanical property and histocompatibility. Hydroxyapatite and titanium are supposed to fulfill the requirements. On the contrary, it is not known how these materials obtain the histocompatible property. We have been studying the histocompatibility of these materials, especially protein distribution around the implant. We showed that there was a thin amorphous layer between the bone and the materials and now we analyze the function of this layer. In addition, possibility of accelerating bone formation around the material is also studied.
Research Interests
  • A study of bone augmentation in relation to implant therapy
    keyword : implant, bone augmentation, top down treatment
    2005.04Bone augmentation in relation to dental implant therapy.
Academic Activities
1. Daisuke Esaki, Yasuyuki Matsushita, Yasunori AYUKAWA, NOBUO SAKAI, Yoshinori Sawae, kiyoshi koyano, Relationship between the magnitude of immediate loading and peri-implant bone strength in dogs., Clinical Oral Implants Research, 10.1111/j.1600-0501.2011.02305.x, 23, 11, 1290-1296, 2012.11.
2. Takashi Kono, Yasunori AYUKAWA, Moriyama Yasuko, Kosaku Kurata, Hiroshi Takamatsu, kiyoshi koyano, The Effect of Low-Magnitude, High-Frequency Vibration Stimuli on the Bone Healing of Rat Incisor Extraction Socket., Journal of Biomechanical Engineering, 134, 9, 091001-1-091001-6, 2012.09.
3. Koichi Yamane, Yasunori AYUKAWA, Toru Takeshita, Akihiro Furuhashi, Yoshihisa Yamashita, kiyoshi koyano, Bacterial adhesion affinities of various implant abutment materials, Clinical Oral Implants Research, 10.1111/j.1600-0501.2012.02574.x, in press, 2012.08.
4. Isoda K, Ayukawa Y, Tsukiyama Y, Sogo M, Matsushita Y, Koyano K., Relationship between the bone density estimated by cone-beam computed tomography and the primary stability of dental implants, Clinical Oral Implants Research, 10.1111/j.1600-0501.2011.02203.x, 23, 7, 832-836, 2012.07.
5. Okawachi H, Ayukawa Y, Atsuta I, Furuhashi A, Sakaguchi M, Yamane K, Koyano K., Effect of titanium surface calcium and magnesium on adhesive activity of epithelial-like cells and fibroblasts, Biointerphases, 10.1007/s13758-012-0027-9, 7, 27, 2012.04.
6. Atsuta I, Ayukawa Y,Ogino Y, Moriyama Y, Koyano K., Evaluations of epithelial sealing and peri-implant epithelial down-growth around “step-type” implants, Clinical Oral Implants Research, 10.1111/j.1600-0501.2011.02163.x, 23, 4, 459-466, 2012.04.
7. Akihiro Furuhashi, Yasunori AYUKAWA, ATSUTA IKIRU, Hideyuki Okawachi, kiyoshi koyano, The difference of fibroblast behavior on titanium substrata with different surface characteristics, Odontology, 100, 2, 199-205, 2012.04.
8. Zhang L, Ayukawa Y, LeGeros RZ, Matsuya S, Koyano, K, Ishikawa K., Tissue-response to calcium-bonded titanium surface., Journal of Biomedical Materials Research , 95A, 1, 33-39, 2010.05.
9. Moriyama Y, Ayukawa Y, Ogino Y, Atsuta I, Todo M, Takao Y, Koyano K., Local application of fluvastatin improves peri-implant bone quantity and mechanical property. A rodent study., Acta Biomaterialia, 6, 4, 1610-1618, 2010.04.
10. Masuzaki T, Ayukawa Y, Moriyama Y, Jinno Y, Atsuta I, Ogino Y, Koyano K., The effect of a single remote injection of statin-impregnated poly (lactic-co-glycolic acid) microspheres on osteogenesis around titanium implants in rat tibia., Biomaterials, 31, 12, 3327-3334, 2010.04.
11. Ayukawa Y, Ogino Y, Moriyama Y, Atsuta I, Jinno Y, Kihara M, Tsukiyama Y, Koyano K., Simvastatin enhances bone formation around titanium implants in rat tibiae., Journal of Oral Rehabilitation, 37, 2, 123-130, 2009.11.
12. Moriyama Y, Ayukawa Y, Kabemura K, Matsushita Y, Kihara M, Tsukiyama Y, Todo M, Takao Y, Koyano K., The alteration of peri-implant bone response exposed to static lateral load, Journal of Biomechanical Science and Engineering, 4, 3, 326-335, 2009.07.
13. Jinno Y, Ayukawa Y, Ogino Y, Atsuta I, Tsukiyama Y, Koyano K., Vertical bone augmentation with fluvastatin in an injectable delivery system: a rat study. , Clinical Oral Implants Research, 20, 8, 756-760, 2009.05.
14. Ogino Y, Ayukawa Y, Kukita T, Atsuta I, Koyano K., Platelet-rich plasma suppresses osteoclastogenesis by promoting the secretion of osteoprotegerin in vitro., Journal of Periodontal Research, 44, 2, 217-224, 2009.04.
15. Ayukawa Y, Yasukawa E, Moriyama Y, Ogino Y, Wada H, Atsuta I, Koyano K., Local application of statin promoted bone repair through the suppression of osteoclasts and the enhancement of osteoblasts at bone-healing sites in rats. , Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 107, 3, 336-342, 2009.03.
16. Moriyama Y, Ayukawa Y, Ogino Y, Atsuta I, Koyano K., Topical application of statin affects the bone healing around implants, Clinical Oral Implants Research, 19, 6, 600-605, 2008.05.
17. Ogino Y, Ayukawa, Y, Kukita T, Koyano K., The contribution of platelet-derived growth factor, transforming growth factor-beta1 and insulin-like growth factor-I in platelet-rich plasma (PRP) to the proliferation of osteoblast-like cells., Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 101:724-729, 2006.06.
18. Ogino Y, Ayukawa, Y, Tsukiyama Y, Koyano K., The effect of platelet-rich plasma on the cellular response of rat bone marrow cells in vitro., Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 10.1016/j.tripleo.2005.03.007, 100, 3, 302-307, 100:302-307, 2005.09.
19. Okamura A, Ayukawa Y, Iyama S, Koyano K, Effect of the difference of bone turnover on peri-titanium implant osteogenesis in ovariectomized rats, Journal of Biomedical Materials Research, 10.1002/jbm.a.30110, 70A, 3, 497-505, 70A: 497-505, 2004.07.
20. Ayukawa Y, Okamura A, Koyano K, Simvastatin promotes osteogenesis around titanium implants. A histological and histometrical study in rats, Clinical Oral Implants Research, 10.1111/j.1600-0501.2004.01015.x, 15, 3, 346-350, 15(3):346-350, 2004.06.
21. H. Ikeda, T. Yamaza, M. Yoshinari, Y. Ohsaki, Y. Ayukawa, M.A. Kido, T. Inoue, M. Shimono, K. Koyano, T. Tanaka, Ultrastructural and immunoelectron microscopic studies of the peri-implant epitherium-implant (Ti-6Al-4V) interface of rat maxilla, J Periodontol, 10.1902/jop.2000.71.6.961, 71, 6, 961-973, Vol.71,pp.961-973, 2000.01.
22. Y. Ayukawa, F. Takeshita, T. Inoue, M. Yoshinari, M. Shimono, T. Suetsugu, T. Tanaka, An immunmoelectron microscopic localization of noncollagenous bone proteins (osteocalcin and osteopontin) at the bone-titanium interface, J Biomed Mater Res, 10.1002/(SICI)1097-4636(199807)41:1<111::AID-JBM14>3.0.CO;2-Q, 41, 1, 111-119, Vol.41,pp.111-119, 1998.01.
1. Yasunori Ayukawa, An establishment and persistence of osseointegration and peri-implant soft tissue sealing. An experimental study., International Congress of Oral Implantologists Asia-Pacific Resion, 2015.11.
2. Yasunori Ayukawa, The acquisition of secure peri-implant soft tissue sealing, 2015 Joint Congress of JPS-CPS-KAP, 2015.04.
3. Yasunori Ayukawa, Osseo-/Soft Tissue Integration.How Are They Established?, The First Joint Workshop on Prosthodontic Research between Shanghai JiaoTong U, Kyushu U, and Korea U, 2013.04.
Educational Activities
For undregraduate student:
Full denture/removable partial denture (lecture, practice)

For graduate school student:
Research for thesis preparation