Waihangahia he putanga matatini ake o tenei rerenga korero Ko Albert H. Ketcham (Akuhata 3, 1870 - Tihema 6, 1935) he tohunga ngaio Amerika me te perehitini o mua o te American Society of Orthodontists.
Ko te tikanga, ko te putanga matatini ake o te rerenga korero ko "Ko Albert H. Ketcham (3 Akuhata, 1870 - Tihema 6, 1935 ) he kairangahau American ko ia te akonga o Edward Angle i tana Kura Angle o Orthodontia. "