The Board may commence proceedings or open an investigation under Health Occupations Article, §4-315, Annotated Code of Maryland, after the filing of a complaint: Received from an individual who is not a member of the Board; or Completed by the Board on its own initiative and signed by a member of the Board. If a person who is not a member of the Board files a complaint, the complaint shall: Be completed on a Board-approved form; Be in writing; Allege facts such that the Board may determine whether the facts may constitute violations of the Maryland Dentistry Act or the regulations adopted by the Board; Contain a Release of Medical Records and a Release of Additional Information; Contain an affidavit indicating that the matters set forth in the complaint are true to the best of the knowledge, information, and belief of the complainant; and Be signed by the complainant. The Board may accept a complaint for filing that substantially fulfills the requirements of this regulation. Absent extenuating circumstances, the Board shall send a letter to the complainant or the complainant’s representative acknowledging receipt of the complaint within 45 days of its filing. The letter referred to in §D of this regulation shall: Contain a brief explanation of the Board’s complaint process; and Advise the complainant that the complaint may ultimately: Be dismissed; Be referred to a Peer Review Committee; Result in an informal action; or Result in a final order. The Board may not bring disciplinary charges against a respondent based solely on events contained in a complaint the Board receives more than 6 years after: The day the complainant actually discovered the facts that form the basis of the complaint; or The day when a reasonable person exercising due diligence should have discovered the facts that form the basis of the complaint. The provisions of §F of this regulation may not apply to a complaint based on: Criminal convictions or sexual misconduct or other similar boundary violations; Reciprocal disciplinary matters; Ongoing substance abuse; Fraudulent concealment of material information; or Acts that occur while a patient is a minor. The Board shall log in and assign a case number to complaints that meet the requirements of this chapter. Complaints that do not meet the requirements of this chapter shall be returned to the complainant with a brief explanation of why the complaint was returned.