Insurance and Financial

Owner

DENTAL X CHANGE, INC.

May 7, 2002

Computer and Scientific

Owner

DENTAL X CHANGE, INC.

May 7, 2002

Computer and Scientific

Owner

DENTAL X CHANGE, INC.

—

Electrical and Scientific Apparatus

Owner

DENTAL X CHANGE, INC.

—

Education and Entertainment

Owner

DENTAL X CHANGE, INC.

May 29, 2001

Computer and Scientific

Owner

DENTAL X CHANGE, INC.

May 29, 2001

Computer and Scientific

Owner

DENTAL X CHANGE, INC.

May 29, 2001

Education and Entertainment

Owner

DENTAL X CHANGE, INC.

May 29, 2001

Advertising and Business

Owner

DENTAL X CHANGE, INC.

Jul 10, 2001

Computer and Scientific

Owner

DENTAL X CHANGE, INC.

Jun 5, 2001

Advertising and Business

Owner

DENTAL X CHANGE, INC.

Jun 5, 2001

Education and Entertainment

Owner

DENTAL X CHANGE, INC.

Jun 5, 2001
BETTER TOOLS FOR YOUR PRACTICE

Advertising and Business

Owner

DENTAL X CHANGE, INC.

May 29, 2001

Advertising and Business and 3 others

Owner

DENTAL X CHANGE, INC.

Sep 15, 1998