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Home  > Oral Biomaterials Development Engineering  > Research Subjects

Research Subjects

Following items are our research subjects:

1. Evaluation of various factors on mechanical properties of teeth substance.
2. Evaluation of fatigue properties of dentin and dental materials using miniature testing pieces
3. Measurement of characteristics of dental ceramic materials and establishment of new testing methods for dental ceramics
4. Measurement of precise deformation using non-contact methods
5. Development of new composite resin with similar machinability of dentin
6. Study on dental root fracture mechanism
7. Applicayion of various types of fiberglass for dentistry
8. Evaluation of composite resin mechanical properties and improvement their bonding efficiency to various materials.
9. Evaluation of impact force absorption of mouthguard and face protect materials


ARCHIEVES IN 2013
[Original Papers]
1. Nagata K, Wakabayashi N, Takahashi H, Vallittu PK, Lassila LV. Fracture resistance of CAD/CAM manufactured FRC denture retainers. Inter J Prosthodont 2013; 26(4): 381-383
2. Shiozawa M, Takahashi H, Finger WJ, Iwasaki N. Effects of the space for wash materials on sulcus depth reproduction with addition-curing silicone using two-step putty-wash technique. Dent Mater J 2013; 32(1): 150-5
3. Bakry AS,Takahashi H, Otsuki M, Tagamie J. The durability of phosphoric acid promoted bioglass–dentin interaction layer. Dent Mater 2013; 29(4): 357-64
4. Wang Fu, Takahashi H, Iwasaki N. Translucency of dental ceramics with different thicknesses. J Prosthet Dent 2013; 110(1): 14-20
5. Abe K, Takahashi H, Churei H, Iwasaki N, Ueno T. Flexural properties and shock-absorbing capabilities of new face guard materials reinforced with fiberglass cloth. Dent Traumatol 2013; 29(1): 23-28
6. Asakawa Y, Takahashi H, Kobayashi M, Iwasaki N. Effect of components and surface treatments of fiber-reinforced composite posts on bond strength to composite resin. J Mech Behav Biomed Mater 2013; 26: 23-33
7. Jiangkongkho P, Kamonkhantikul K, Takahashi H, Arksornnukit M. Fracture resistance of endodontically treated teeth using fiber posts with an elastic modulus similar to dentin. Dent Mater J 2013; 32(5): 781-6
8. Shiozawa M, Takahashi H, Iwasaki N., Uo M. Effect of calcium chloride solution immersion on surface hardness of restorative glass ionomer cements. Dent Mater J 2013; 32(5): 828-33.



ARCHIEVES IN 2012
[Original Papers]
1. Bakry AS, Takahashi H, Otsuki M, Yamashita K, Tagami J. CO2 laser improves 45S5 bioglass interaction with dentin. J Dent Res 2011; 90(2): 246-250.
1. Kumagae N, Komada W, Fukui Y, Okada D, Takahashi H, Yoshida K, Miura H. Influence of the flexural modulus of prefabricated and experimental posts on the fracture strength and failure mode of composite resin cores. Dent Mater J 2012; 31(1): 202-206
2. Koottathape N, Takahashi H, Finger WJ, Kanehira M, Iwasaki N, Aoyagi Y. Quantification of in vitro produced wear sites on composite resins using contact profilometry and CCD microscopy: A methodological investigation. J Med & Dent Sci 2012; 59: 53-56.
3. Chaijareenont P, Takahashi H, Nishiyama N, Arksornnukit M. Effects of silane coupling agents and solutions of different polarity on PMMA bonding to alumina. Dent Mater J 2012; 30(4): 610-616.
4. Chaijareenont P, Takahashi H, Nishiyama N, Arksornnukit M. Effect of different amounts of 3-methacryloxypropyltrimethoxysilane on the flexural properties and wear resistance of alumina reinforced PMMA. Dent Mater J 2012; 30(4): 623-628.
5. Koottathape N, Takahashi H, Iwasaki N, Kanehira M, Finger WJ. Morphological features of composite resin surfaces after two- and three-body wear simulation. World J Dent 2012; 3(3): 221-228.
6. Koottathape N, Takahashi H, Iwasaki N, Kanehira M, Finger WJ. Two- and three-body wear of composite resins. Dent Mater 2012; 28(12): 1261-1270.

[Presentations]
1. Kasuga Y, Hoshino Y, Inoue M, Ibaraki H, Nagasawa Y, Hibino Y, Takahashi H, Sumi Y, Minakuchi S, Nakajima H.Long-term viscoelastic properties of soft lining material containing fluorinated monomer.AADR/CADR 2012 meeting #1025, 2012/3/23, Tampa Convention Center, Florida
2. Shiozawa M, Takahashi H, Kashiwazako H. Effect of fluoride recharge on properties of pit-and-fissure sealants. 10th International Conference of Asian Academy of Preventive Dentistry (Ulaanbaatar, 2012/9/14-16) 10th International Conference of Asian Academy of Preventive Dentistry, 2013/9/15, Ulaanbaatar Mongolia1
3. Aoyagi Y, Yoshida M, Honda E, Takahashi H, Umemoto K. Development of a reference phantom for dental cone beam CT. The 60th annual meeting of Japanese Association for Dental Reasearch #116, 2012/12/15, Niigta Convention Center, Niigata
4. Chaijareenont P, Nincharoen S, Takahashi H, Arksornnukit M. Effect of alumina filler amounts on bonding between denture base/teeth. The 60th annual meeting of Japanese Association for Dental Reasearch #126, 2012/12/15, Niigta Convention Center, Niigata



ARCHIEVES IN 2011
[Original Papers]
1. Bakry AS, Takahashi H, Otsuki M, Yamashita K, Tagami J. CO2 laser improves 45S5 bioglass interaction with dentin. J Dent Res 2011; 90(2): 246-250.
2. Arksornnukit M, Phunthikaphadr T, Takahashi H. Pressure transmission and distribution under denture bases using denture teeth with different materials and cuspal angulations. J Prosthet Dent 2011; 105(2): 127-136.
3. Takahashi H, Finger WJ, Endo T, Kanehira M, Koottathape N, Komatsu M, Balkenhol M. Comparative evaluation of mechanical characteristics of nanofiller containing resin composites. Amer J Dent 2011; 24(5): 264-270.
4. Kasuga Y, Takahashi H, Akiba N, Minakuchi S, Matsushita N, Hishimoto M. Basic evaluation on physical properties of experimental fluorinated soft lining materials. Dent Mater J 2011; 30(1): 45-51.
5. Osathanon T, Bespinyowong K, Arksornnukit M, Takahashi H, Pavasant P. Human osteoblast-like cell spreading and proliferation on Ti-6Al-7Nb surfaces of varying roughness. J Oral Sci 2011; 53(1): 23-30.
6. Suwannaroop P, Chaijareenont P, Kootathape N, Takahashi H, Arksornnukit M. In vitro wear resitance, hardness and elastic modulus of artificial denture teeth. Dent Mater J 2011; 30(4): 461-468.
7. Sakai Y, Takahashi H, Iwasaki N, Igarashi Y. Effects of surface roughness and tapered angle of cone crown telescopic system on retentive force. Dent Mater J 2011; 30(5): 635-641.
8. Rutkunas V, Mizutani H, Takahashi H, Iwasaki N. Wear simulation effects on overdenture stud attachments. Dent Mater J 2011; 30(6): 845-853.

[Presentations]
1. Abe K, Churei H, Kobayashi M, Takahashi H, Ueno T. Flexural properties of a new face guard core material measured by three-point bending test. IDMC 2011 at Soeul, YIA13, Yonsei Univ. Soeul, Korea, 2011/5/28.
2. Asakawa Y, Takahashi H, Kobayashi M, Iwasaki N, Shiozawa M, Koottanathape N. Effect of fiberglass length on diametral tensile strength of cqalcilu phosphate cement. IDMC 2011 at Soeul,P2-Cer13, Yonsei Univ. Soul, Korea. 2011/5/28.
3. Wang F, Takahashi H, Yasue T, Iwasaki N, Shiozawa M, Asakawa Y, Zoljargal P, Koottanathape N. Comparison of translucency of ceramic core materials at different thickness. IDMC 2011 at Soeul, P2-Cer14, Yonsei Univ. Soeul, Korea, 2011/5/28.
4. Shiozawa M, Takahashi H, Iwasaki N, Koottanathape N, Asakawa Y, Zoljargal P, Wang F, Fluoride release and mechanical properties of restorative glass ionomer cements. IDMC 2011 at Soeul, P2-Mis19, Yonsei Univ. Soeul, Korea, 2011/5/28.
5. Churei H, Abe K, Kobayashi M, Takahashi H, Ueno T. Physical properties evaluation of face guard materials ―Effect of cushioning materials on shock absorption. IDMC 2011 at Soeul, P2-Mis21, Yonsei Univ. Soeul, Korea, 2011/5/28.
6. Hongo T, Hikage S, Takahashi H. Fraction broke down Bis-GMA to its metabolites without metabolic activation. IDMC 2011 at Soeul, P2-Mis23, Yonsei Univ. Soeul, Korea, 2011/5/29
7. Varauboln C, Takahashi H, Arksornnukit M. Effect of different core stiffness on fracture resistance of endodontically treated teeth with flared root, IDMC 2011 at Soeul, P3-Com05, Yonsei Univ. Soeul, Korea, 2011/5/29
8. Lueangwattanakij R, Takahashi H, Arksornnukit M. Color stability of resin cements after ultraviolet artificial aging, IDMC 2011 at Soeul, P3-Com07, Yonsei Univ. Soeul, Korea, 2011/5/29.
9. Jiangkongkho P, Takahashi H, Arksornnukit M. Fracture resistance of endodontically treated teeth restored with different fiber reincorced composite post lengths, IDMC 2011 at Soeul, P3-Com08, Yonsei Univ. Soeul, Korea, 2011/5/29.
10. Chaijareenont P, Takahashi H, Arksornnukit M. Effect of different silane coupling agent amounts silanized on alumina filler on flexural strength of methacrylate denture base. IDMC 2011 at Soeul, P3-Com09, Yonsei Univ. Soeul, Korea, 2011/5/29.
11. Nishikawa I, Toyama T, Takahashi H. Fatigue streength of filler hybrid type resin composite - effect of filler size on fatigue strength. IDMC 2011 at Soeul, P3-Com17, Yonsei Univ. Soeul, Korea, 2011/5/29.
12. Zoljargal P, Takahashi H, Masuda T, Koottanathape N, Shiozawa M, Asakawa Y, Iwasaki N, Wang F, Characteristics of recent veneering composite resins, IDMC 2011 at Soeul, P3-Com22, Yonsei Univ. Soeul, Korea, 2011/5/29.
13. Koottanathape N, Takahashi H, Iwasaki N, Finger WJ, Angwarawong T, Arksornnukit M. IDMC 2011 at Soeul, P3-Com24, Yonsei Univ. Soeul, Korea, 2011/5/29.
14. Suwannaroop P, Chaijareenont P, Kootathape N, Takahashi H, Arksornnukit M. In vitro wear resitance of artificial denture teeth. IDMC 2011 at Soeul, P3-Pol04, Yonsei Univ. Soeul, Korea, 2011/5/29.
15. Kasuga Y, Takahashi H, Inoue M, Hoshino Y, Minakuchi S, Nakajima H. Evaluation on physical properties of experimental fluorinated, acrylic-based and silicone rubber-based soft lining materials . IDMC 2011 at Soeul, P3-Pol24, Yonsei Univ. Soeul, Korea, 2011/5/29.
16. Aoyagi Y, Umemoto K, Takahashi H, Iwasaki N, Tanaka M. Dimensional stability and tensile strength of the new vinyl polysiloxane impression material for home-visit dental care. IDMC 2011 at Soeul, P3-Pol27, Yonsei Univ. Soeul, Korea, 2011/5/29.
17. Iwasaki N, Kasuga Y, Takahashi H, Minakuchi S, Suzuki T. Bond strength and viscoelasticity of MMA-based and silicone-based denture liners. IDMC 2011 at Soeul, P3-Pol128, Yonsei Univ. Soeul, Korea, 2011/5/29
18. Chaijareenont P, Takahashi H, Arksornnukit M. Wear of Alumina Reinforced PMMA Using Different Amount of Silane. The 59th Annual Meeting of Japanese Association for Dental Research (JADR). #027, International Conference Center Hiroshima, 2011/10/8.
19. Jiangkongkho P, Takahashi H, Arksornnukit M. Ferrule and Crown Affect Fracture Resistance of Endodontically Treated Teeth. The 59th Annual Meeting of Japanese Association for Dental Research (JADR). #087, International Conference Center Hiroshima, 2011/10/8.
20. Shiozawa M, Takahashi H, Iwasaki N, Koottathape N. Mechanical properties and fluoride release of recent restorative glass-ionomer cement. IADR- SEAADE Annual Meeting at Grand Copthorne Hotel, Singapore, 2011/10/29.
21. Koottanathape N, Takahashi H, Finger WJ, Iwasaki N, Arksornnukit M. Effect of surface-profile measuring machine on composite resins wear properties. IADR- SEAADE Annual Meeting at Grand Copthorne Hotel, Singapore, 2011/10/29

[Invited lecture and Special lecture]]
1. Takahashi H, Standards and regulatory system of dental devices in Japan. 2011 KOREA・CHINA・JAPAN Joint symposium on standards and regulatory system on dental devices, Korea, May 30, 2011.
2. Takahashi H "Nanofiller Resin Composites: A Fashionable Label or a Class of Restoratives with Relevantly Improved Characteristics?". Mongolian Health Science Univ. (Ulaanbaatar,Mongol), 2011/8/17
3. Takahashi H. Characteristics of Nano-filler Composite Resins and Dental Prostheses using Fiberglass. Chon-mun Univ.(Gwanjyu, Korea), 2011/10/7.



ARCHIEVES IN 2010
[Original Papers]
1 Hanada T, Quevedo CG, Okitsu M, Yoshioka T, Iwasaki N, Takahashi H, Suda H. Effects of new adhesive resin root canal filling materials on vertical root fracture. Aust J Endodont 2010; 36(1): 19-23.
2. Ona M, Takahashi H, Sato M, Igarashi Y, Wakabayashi N. Effect of reactive adhesives on the tensile bond strength of vinyl polysiloxane impression materials to methylmethacrylate tray material, Dent Mater J 2010; 29(2): 336-340.
3. Takahashi H, Finger WJ, Kurokawa R, Furukawa R, Komatsu M. Sulcus depth reproduction with vinyl polysiloxane impression material: Effects of hydrophilicity and impression temperature. Quintessence Int 2010; 41(3): e43-e50.
4. Reza F, Takahashi H, Iwasaki N, Tamaki Y. Effects of investment type and casting system on permeability and castability of CP titanium. J Prosthet Dent 2010; 104(2): 114-21.
5. Takahashi H, Finger WJ, Wegner K, Utterodt A, Komatsu M, Wöstmann B, Balkenhol M. Factors influencing marginal cavity adaptation of nanofiller containing resin composite restorations. Dent Mater 2010; 26(12): 1166-1175.


[Presentations]
1. Yoda K, Ona M, Takahashi H, Sato M, Igarashi Y, Wakabayashi N. Bond Strength of Reactive Adhesives Between Impression Material and Methylmethacrylate. IADR, #771, Barcelona, Spain, 2010/7/14
2. Kasuga Y, Takahashi H, Akiba N, Minakuchi S1, Matsushita M, Hishimoto M. Development of Soft Denture Lining Materials Containing Dodecafluoroheptyl-methacrylate or Tridecafluorooctyl-methacrylate. IADR, #1325 Barcelona, Spain, 2010/7/14
3. Nagata K1, Takahashi H, Vallittu PK, Igarashi Y, L.V.J. Lassila LVJ. CAD-CAM fabrication methods of FRC telescopic crown retainer for RPDs . IADR, #1400, Barcelona, Spain, 2010/7/14
4. Arksornnukit M, Jiangkongkho P, Chaijareenont P, Srisunakrua L, Takahashi H. Modulus of Post Affects Fracture Resistance of Endodontically Treated Tooth. IADR, #2189, Barcelona, Spain, 2010/7/15
5. Bakry1 AS, Otsuki M, Takahashi H, Yamashita K, Tagami J. Evaluation of New Treatment for Incipient Enamel Caries Using 45S5-Bioglass. IADR, #2518, Barcelona, Spain, 2010/7/15
6. Takahashi H, Iwasaki N, Koottathape N, Asakawa Y, Arksornnukit M. Shear Bond Strength of Veneering Composite Resins to Various Alloys. IADR, #3755, Barcelona, Spain, 2010/7/16
7. Koottathape Natthavoot, Naohiko Iwasaki, Hidekazu Takahashi,Arksornnukit Mansuang. The reliability of diametral tensile test of composite resins. the Regional Biomaterials Scientific Meeting 2010 (RBSM 2010), Kota Bharu, 2010/10/28