Buyer beware! We have many RV friends who use Los Algodones. I went through a painful process to try and choose a 'good' dentist, then picked one that seemed to have good reviews and made an appointment. They thoroughly x-rayed and imaged our mouths and then commenced a hard-sell worse than any car dealer I've ever experienced! They insisted that we needed to start all of this work immediately. We also needed to pay up front. There were questions about our credit card balances.
Bottom line, my work was estimated at $17,000USD, discounted to a mere $15K if we paid that day. To be honest, most of the work they were indicating seemed likely given my dental history. But then they coincidentally came up with a similar amount for my wife, another $15K! We paid for our cleanings/x-rays and walked back across the border.
Part of the problem they faced, apart from my natural skepticism, was that we have spent years living in Mexico and we knew that these prices were insane. Hell, they were inflated compared to the States, not to mention Mexico.
We compared notes with our friends who have visited various other dentists in Los Algodones. We were not impressed with those prices either!
We've now been back in Mexico since March. I have had many cavities filled, chips repaired, etc. Not only has it been the least painful, most careful dentistry I've ever experienced, but only one or two visits have gone over $100US. Same for the wife. So far the most expensive visit was the wife's new crown which came in at $437.
I've still got some perio and crown work yet, but so far the prices have been very reasonable, even compared to other *cheaper* dentists in the area.
So, if you *must* go to Los Algodones, make sure you get word-of-mouth referrals to specific dentists, including prices. Otherwise it's just a big crapshoot. But you might also consider flying in for some dental touristry. At local prices, it more than offsets the travel costs.
https://dentalexpressmexico.com/dental-tourism-in-mexico/
PM me if you want any specific recommendations, either here (south of Guadalajara) or in Puerto Vallarta.