A person shall be entitled on payment of the prescribed fee to have his name entered in the register of dental mechanics, if he satisfies the prescribed requirements referred to in section 12:
     Provided that for the purposes of the preparation of the first register of dental mechanics a person shall be entitled to be registered, if he has been engaged as a dental mechanic as his principal means of livelihood for a period of not less than two years prior to the date of notification under sub-section (1) of section 36.