What is the meaning of bmp in dentist work?

Biomechanical prep. Here are two possibilities. It depends on what context bmp is used. It can stand for the "bio-mechanical preparation" during a root canal when a dentist removes the pulp tissue and infected tooth tissue in the root canal procedure or bmp can be refer to bone morphogenetic proteins that can be used to induce the formation of bone in the TMJ or in periodontal procedures.
Bone growth protein. Bmp, is an abbreviation for bone morphogenetic protein, a tissue engineered or manufactured protein that is used to promote bone growth for individuals who have osseous or bone defects.