How much does an Asst. Professor - Dentistry make in Maine? The average Asst. Professor - Dentistry salary in Maine is $84,351 as of November 25, 2019, but the range typically falls between $68,054 and $101,680. Salary ranges can vary widely depending on the city and many other important factors, including education, certifications, additional skills, the number of years you have spent in your profession.