I am trying to find out the name of the company to contact about AXIOM
software which is a clinical/practice management software developed
for dental schools.

I believe the software you're looking for is AxiUm, which is described
as "Clinical Management Software for Dental Schools." AxiUm is a
product of Exan Software:

Exan Software
http://www.exanacademic.com/

Here you will find contact details for information about AxiUm:

Ted DeVries
101 - 1515 Broadway Street
Port Coquitlam, B.C. V3C 6M2 Canada
Tel: (604) 468-6820
Fax: (604) 468-6850
Email: tdevries@exansoftware.com 

Axium Sales
101 - 1515 Broadway Street
Port Coquitlam, B.C. V3C 6M2 Canada
Tel: (604) 468-6820
Fax: (604) 468-6850
Email: axiUm@exansoftware.com
 
Exan Software
http://www.exanacademic.com/contacts.htm

Google search strategy:

Google Web Search: "axium" + "dental"
://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=axium+dental

If this is not the software that you seek, if anything is unclear, or
if a link does not function, please request clarification; I'll be
glad to offer further assistance before you rate my answer.

Best regards,
pinkfreud