I hadn’t heard of that town...Interesting.
From Wikipedia...
“The popularity of both inexpensive prescriptions and medical care catering to Canadian and U.S. senior citizens has prompted a virtual explosion of pharmacies, opticians and dental offices since the 1980s.[5][6] They have largely displaced many of the open-air shops and restaurants immediately across the border, and have effectively shifted the town’s focus from tourism to medicine. Los Algodones has approximately 600 dentists who service uninsured Canadian and American health tourists who save 40 to 60 percent on dental services.[7] Nevertheless, a number of shops and restaurants remain, and Los Algodones capitalizes on the tourist trade with frequent fiestas throughout the year, most notably around the Christmas season.”
One good thing about the dental community there is they are sort of self-policing and have been known to “kick out” bad dentists and practices so as to retain their overall reputation. You can can easily find proven practices with a couple of decades of experience and the latest equipment.