Whether or not a dentist tells your parents about your dental treatment depends on various factors, including your age, the type of treatment, and your parents' involvement in your healthcare.
Generally, dentists are required to maintain patient confidentiality, meaning they cannot disclose any information about your treatment to third parties, including your parents, without your consent. However, there are some exceptions to this rule. For example, if you are a minor, your dentist may need to inform your parents about your treatment in order to obtain their consent for certain procedures. Additionally, if your dentist believes that you are at risk of harm, they may be required to report this to your parents or other appropriate authorities.