Any person licensed to practice dentistry or dental hygiene in this state who is an officer in the commissioned dental corps of the army, navy, air force or the public health service of the United States shall not be required to register as required in this chapter. Such person shall file with the board an affidavit on a form to be furnished by the board, which affidavit shall state the date on which such person entered the army, navy, air force or the public health service of the United States and such other facts as tend to verify such service as the board shall deem necessary. When such person resigns or is honorably discharged from one (1) of the aforementioned services and engages in the practice of dentistry or dental hygiene in this state or any other state, such person shall, within thirty (30) days, apply for registration with the board as provided for in this chapter.