Dr Henrik Overgaard-Nielsen from the BDA told ITV's Daybreak that the OFT report gave a misleading view of dentists, as the vast majority of patients were happy with their treatment.
More top news
The triggering of Article 50 has dominated newspaper headlines on Thursday, with many focusing on a possible threat over security by Ms May.
Twelve people have been killed and three injured after a pick-up truck and a church minibus crashed head-on in Texas.
Revenge porn offenders who attempt to magnify their targets' humiliation will face the toughest penalties under new sentencing proposals.