I whakangungua a Hidekazu Kitabayashi ki te pokanga waha i muri i tana whakawhiwhinga mai i te Whare Wananga o Osaka Dental University i te tau 1993. I te tau 1998 ka riro ia ia tana tohu tohu kairangi o te Whare Wananga o Osaka Dental University. Mai i te tau 2000 tae noa ki tenei wa, i mahi ia hei taote matua mo nga mahi motuhake i Nara, Japan. No ITI ia (International Team for Implantlogy) mai i te tau 2002. Mai i te 2005 ki te 2006, i whai waahi ia hei Kaiakonga ITI i te Whare Wananga o te Whare Wananga o Florida, USA. Ko ia te hoa ITI mai i te tau 2010 me te kaiwhakaako harangotengote mo te pokanga waha i te Whare Wananga o Osaka Dental mai i te tau 1998. I whakamanahia ia hei tohunga mo te Haapori Hapanihi mo te Rongo-a-Tara i te tau 2013. No IAOMT (International Academy of Oral Medicine & Toxicology) ia mai i te wa. 2016.