The mission of Texas Dental Association Smiles Foundation (TDASF) is to educate the public and profession about oral health and improve access to dental care for citizens of Texas.  If you need to contact our offices, please refer to the information below.  Address: 1946 S. IH-35, Suite 300 | Austin, TX 78704  Phone: (512) 448-2441 | Toll-free Phone: (877) 807-6453  Fax: (512) 448-2781