Ask your dentist and other dentists. I’m not really sure. The following sites contain a LOT of really helpful information, you should check them out
http://www.san-diego-dentist.us
http://san-diego-dentists.blogspot.com
http://www.san-diego-dentist.us/san-diego-dentist-tijuana-dentist.html
http://www.san-diego-dentist.us/tijuana-dentist.htm
http://www.san-diego-dentist.us/san-diego-dental-implants.html
http://www.las-vegas-nevada-lawyer-attorney-legal-injury-defense-directory.com
http://www.medical-research-study-directory.info/san-diego-medical-research-study.htm