Here is my opinion of Dr. Landry,
First and foremost this guy's dental skills are not even average. They are sub par at best. He doesn't seem to care if he inflicts pain while he is working on you. He is painfully slow and once took over 10 hours to put a crown on my tooth. I have 4 crowns in my mouth that he put on and they all have to be re done.
Another time I had a huge bubble of puss on the upper part of my mouth. I told Dr. Landry about it and he said "Oh that will go away once we put your crown on". Well he didn't explore the reason for the bubble of puss and weeks went by and eventually that tooth by the bubble just broke off. I then had to have a root canal, and then they had to amputate one of the roots of my tooth. All because this guy ignored my symptoms.
He is not a good dentist.
That is not this guy's worst quality however. I was his patient at a clinic he worked at and during the course of my treatment the clinic made a terrible mistake. They put me in a treatment plan that required I have a great deal of preparatory work done on my back teeth before proceeding with additional treatment. A year and a half of treatment, I spent 6000$, endured 45 total days in the dental chair(about 30 with this guy), had to endure about 150 of those painful shots, and drive a total of 4500 miles for treatment since my house is 100 miles roundtrip from the clinic.
After enduring all of this, the clinic informed me that they couldn't do the original treatment plan I had agreed to and they tried to pass off this inferior treatment plan on me. I objected and refused to agree to the inferior treatment plan. I eventually had to sue the clinic. Dr. Landry was very involved in my treatment and so he was deposed under oath. Under aoth he didn't just distort the truth. He blatantly lied dozens of times!
To sum it up, in my opinion this guy is a terrible dentist. He is dishonest and unethical. If you need a dentist, look elsewhere. You'll regret it if you go to him.