Maine does two things that make a practice owner's life easier and one that makes hiring harder. It publishes how often it inspects each category of x-ray facility, which almost no state does. It licenses dental radiographers as a distinct credential, so you always know who is allowed behind the sensor. And it puts a wage floor and a mandatory review period on non-compete agreements, which means the template you brought from another state probably does not comply.
Key takeaways
- Maine licenses a Dental Radiographer (RAD) separately from dentists, hygienists and expanded function dental assistants. Radiography is not something an untrained assistant simply picks up.
- CE differs by license type. Under the board's Chapter 13 chart, dentists complete 40 hours plus CPR on a two-year cycle renewing December 31 of odd years, hygienists and denturists 30 hours plus CPR renewing December 31 of even years, EFDAs 50 hours over a five-year staggered term, and dental radiographers need current CPR only.
- The Maine CDC Radiation Control Program publishes inspection intervals: dental and podiatric facilities every three years, clinic and private office every two, veterinary every five, mammography annually.
- Under 26 MRS 599-A, an employer may not require a non-compete from an employee earning at or below 400 percent of the federal poverty level, must disclose that a non-compete will be required before offering employment, and must give the employee the agreement at least three business days before requiring a signature.
Rules change, so verify before you act. Everything below was checked against an official Maine or federal source in September 2026. The board's CE chart we relied on is dated November 2018, and rules, fees and statutes change. Confirm with the Board of Dental Practice and the Radiation Control Program directly, and take employment and tax questions to a Maine attorney or CPA.
Who regulates what
| Topic | Agency | Official link |
|---|---|---|
| Licensure for dentists, hygienists, radiographers, EFDAs and denturists | Maine Board of Dental Practice | License types |
| Renewal timing and general licensure questions | Maine Board of Dental Practice | Licensure FAQs |
| Continuing education by license type | Maine Board of Dental Practice, Board Rules Chapter 13 | Chapter 13 continuing education chart |
| X-ray facility registration and inspection | Maine CDC, Radiation Control Program | X-ray licensing |
| Radiation program overview | Maine CDC | Radiation control and nuclear safety |
| Amalgam separators and dental wastewater | US EPA rule, enforced by your local pretreatment control authority | EPA dental effluent guidelines |
| Non-competes | Maine Legislature, 26 MRS 599-A, enforced by the Maine Department of Labor | 26 MRS 599-A |
| Bloodborne pathogens, hazard communication, PPE | Federal OSHA | OSHA |
License renewal and continuing education
Maine issues more license types than most states, and each carries its own CE obligation. The board's Chapter 13 transition chart, which sets out the requirements under the rule effective after November 12, 2018, lays them out:
| License | CE per cycle | Cycle and renewal |
|---|---|---|
| Dentist (DEN) | 40 hours plus CPR | Two years, renewing December 31 of odd years |
| Dental hygienist (RDH) | 30 hours plus CPR | Two years, renewing December 31 of even years |
| Denturist (LD) | 30 hours plus CPR | Two years, renewing December 31 of even years |
| Expanded function dental assistant (EFDA) | 50 hours plus CPR | Five-year staggered term |
| Dental radiographer (RAD) | Current CPR only | Five-year staggered term |
Mandatory content sits inside the dentist total: 3 hours of opioid prescribing training and 6 hours of sedation training, each as applicable to the licensee. On format, the chart draws a line most CE trackers miss. There is no limit on distance learning activities that include an exit examination, but there is a 10-hour limit on distance learning activities without one. If you are buying passive on-demand content, that 10-hour ceiling is the number to watch.
On timing, the board states that a license may be renewed up to 60 days before its expiration date. A license expiring December 31 opens for renewal on October 31.
The CE chart we used is dated November 2018. It is published by the board and it is the clearest official summary available, but Chapter 13 can be amended. Before you rely on a specific hour figure for an audit, open the current Chapter 13 rule or email dental.board@maine.gov.
X-ray equipment: registration and inspection
The Maine Radiation Control Program registers roughly 1,300 x-ray facilities, covering clinical and private offices, dental, podiatric, chiropractic, veterinary, industrial and mobile x-ray services. Registration is per facility, with an annual registration fee charged per x-ray machine. The program does not publish the fee amount on its licensing page.
The forms are specific enough to be worth knowing by number:
- HHE 804, fee submission form
- HHE 805, x-ray machine data form, one per machine
- HHE 804A, shielding assessment waiver, used for a replacement unit in the same location
- HHE 805A, temporary x-ray machine registration
- HHE 820, qualified expert application
- HHE 825, x-ray service provider registration
The existence of HHE 804A tells you something useful: Maine expects a shielding assessment when a machine goes in, and gives you a waiver path when you are swapping a unit into a spot that already held one. Plan on the assessment when you are putting imaging into a room that has never had it.
Maine also publishes inspection intervals, which is rare and genuinely useful for budgeting:
| Facility type | Inspection interval |
|---|---|
| Dental and podiatric | Every 3 years |
| Clinic or private office, and chiropractic | Every 2 years |
| Mobile x-ray services | Every 2 years |
| Veterinary | Every 5 years |
| Mammography | Annually |
Inspection reports go to Radiation.DHHS@Maine.gov, and the program takes questions at 207-287-5676. For the general mechanics that apply in every state, see dental x-ray registration and inspections, plus intraoral x-ray units and panoramic units.
Buying and selling used equipment in Maine
One form per machine, and a waiver if you are replacing
Because Maine collects an HHE 805 machine data form for each unit and charges the annual fee per machine, adding a used intraoral unit is a filing and a recurring cost, not just a purchase. If the used unit is going into the same location as the one it replaces, the HHE 804A shielding assessment waiver is the form to ask about. If it is going somewhere new in the building, expect a shielding assessment.
In a practice purchase, ask the seller for the facility registration and the list of HHE 805 machine records, then walk the operatories and compare. Our pre-purchase equipment checklist and hidden costs of buying used equipment cover the rest.
Check who can actually use what you bought
Maine's separate dental radiographer license means the question "can we staff this pan on Fridays" has a licensure answer, not just a scheduling answer. Before you add imaging capacity, count the licensed radiographers, hygienists and dentists on your roster. Hiring an assistant from a state with no radiography credential does not give you a Maine-licensed operator.
Amalgam separators and wastewater
The federal EPA rule at 40 CFR Part 441 applies to dental offices that place or remove amalgam and discharge to a publicly owned treatment works. You operate and maintain an amalgam separator, you do not discharge scrap amalgam or use certain line cleaners, and you file a one-time compliance report with your pretreatment control authority, usually the local sewer district. Ask that authority what it expects from a new owner at closing. See amalgam separators and dental waste disposal.
Non-competes and employment
Maine wrote its rules into statute at 26 MRS 599-A, and the requirements are procedural as well as substantive. The four provisions that decide most dental cases:
- A wage floor. An employer may not require a non-compete from an employee earning at or below 400 percent of the federal poverty level. In a dental office that reaches deep into the front desk and assisting staff, and sometimes further.
- Disclosure before the offer. The employer must disclose that a non-compete will be required before making an offer of employment.
- Three business days to review. The employer must give the employee a copy of the agreement at least three business days before requiring a signature, so it can be reviewed and negotiated.
- Delayed effectiveness. For most employees the non-compete does not take effect until the later of one year of employment or six months from the date it was signed. Allopathic and osteopathic physicians are excepted from that delay.
Violating the wage floor or the notice rules is a civil violation carrying a fine of not less than $5,000, enforced by the Maine Department of Labor. Note who is excepted from the delayed effectiveness rule: physicians. Dentists are not named, which is another reason to have Maine counsel read the agreement rather than reason by analogy.
The practical failure mode for an owner is the three-day rule. Handing a new hire a packet on their first morning that includes a non-compete, and asking them to sign it before lunch, does not satisfy the statute. Send it with the offer.
At the federal level, the FTC's non-compete rule is not in effect. On September 5, 2025 the Commission voted to dismiss its appeals and accede to the vacatur of the rule after a district court held the agency lacked authority to issue it. Maine law controls. See our national overview of non-compete agreements for dentists, the associate contract review checklist, and associate contract red flags.
What we could not confirm
- Whether the November 2018 Chapter 13 CE chart still reflects the current rule. Confirm the hour figures against the current Chapter 13 text or with the board.
- The Maine annual x-ray registration fee per machine. The program states that a per-machine annual fee exists but does not publish the amount.
- The specific education and examination requirements for a Maine dental radiographer license. The license type page names the credential but does not detail the qualifying path.
- Whether Maine requires a shielding assessment for every new dental installation, or only in defined circumstances. The existence of a waiver form implies conditions we could not verify.
- Maine limits on non-dentist ownership of a dental practice.
- Sales and use tax treatment of dental equipment in Maine, including private-party purchases. Confirm with Maine Revenue Services and your CPA.
Where to verify
- Maine Board of Dental Practice: license types, licensure FAQs, and the Chapter 13 continuing education chart
- Maine CDC Radiation Control Program: x-ray licensing
- Maine Legislature: 26 MRS 599-A, restrictions on non-compete agreements
- US Environmental Protection Agency: dental effluent guidelines, 40 CFR Part 441
- Federal Trade Commission: September 2025 statement acceding to vacatur of the non-compete rule
- Occupational Safety and Health Administration: osha.gov
Putting it to work
If you are hiring in Maine, fix two habits. Send any non-compete with the offer letter, never with the new hire packet, and check the wage floor before you ask a front desk employee to sign one at all. If you are adding imaging, count your licensed radiographers before you count your operatories, and ask the Radiation Control Program whether your installation needs a shielding assessment or qualifies for the HHE 804A waiver. And put your dental inspection on a three-year mental cycle so it is not a surprise.
Related reading: x-ray registration and inspections, non-compete agreements for dentists, the compliance chapter of the operations guide, and the rest of the state resources directory.
This guide is educational content and does not constitute legal, financial, tax, or clinical advice. Laws and regulations vary by state and change over time. Consult your own dental-specific attorney, CPA, and state dental board before acting.