Yes, a dentist can strike you off or remove you from their patient list under certain circumstances. However, they must have valid reasons for doing so and should follow proper procedures. In the UK, for example, dentists may remove a patient from their list for reasons such as:

Frequent missed appointments: If a patient consistently misses appointments without providing notice or a valid reason, the dentist may decide to remove them from their patient list.

Inappropriate behavior: If a patient displays aggressive, threatening, or abusive behavior towards the dental staff or other patients, the dentist may choose to remove them from the practice.

Non-payment: If a patient has outstanding payments for dental treatments and fails to make arrangements to pay, the dentist may decide to remove them from their patient list.

Non-compliance: If a patient consistently refuses to follow the dentist's advice or recommended treatment plans, the dentist may decide that they can no longer provide effective care and remove the patient from their list.

Relocation: If a patient moves to a different area and it is no longer practical for them to attend the dental practice, the dentist may remove them from their list.

Before removing a patient from their list, a dentist should communicate their concerns and give the patient an opportunity to address the issue. If the problem persists, the dentist should provide the patient with a written warning, explaining the reasons for their removal from the patient list and the steps they need to take to find a new dentist.

It's important to note that dentists should not remove patients from their list due to discrimination or because the patient has made a complaint. Patients have the right to raise concerns about their dental care, and dentists should address these concerns professionally and fairly.