A Manhattan dentist has been accused in a Manhattan Federal Court lawsuit of trying to preempt potential criticism from her patients. A former patient filed a suit alleging that the dentist–who moonlights as an opera singer–forced him to sign an agreement not to write negative reviews about the dentist’s practice online before she worked on his sore tooth. The Plaintiff claimed that the dentist accused him of breaching the signed agreement when the patient published a review on a website–claiming that the dentist overbilled him in excess of $4,000 — and that he continued to be billed $100 a day for each day his review remained online. An attorney for the patient said that the agreement violated the patient’s constitutional right to free speech and that it breached dental ethics in its efforts to suppress and deprive the consumer of valuable information.