According to the Maryland State Board of Examiners: A hygienist licensed in Maryland who holds a current certification or other recognition to administer local anesthesia in another state, may receive recognition to administer local anesthesia by infiltration in Maryland without the requirement of passing the 28 hour course of instruction. The hygienist recognized to administer local anesthesia in another state will be required to pass or have passed the NERB Local Anesthesia Examination for Dental Hygienists. In addition, the hygienist must submit a notarized affidavit to the Board indicating that he or she has successfully administered local anesthesia by infiltration at least 25 times in the 2 year period immediately preceding the date of application. A one time fee must be paid to the Board along with the application. Dental hygienists who meet the Board’s requirements will be recognized as qualified to administer local anesthesia by infiltration. There is no renewal requirement.

I do believe you need to be certified to do laser treatment in Maryland. Regulations vary state to state, so it is always best to contact the State Board for specific questions, that’s what they are there for!