Dental A to Z ABCDEFGHIJKLMNOPQRSTUVWXYZ Also in M: MalignantMandibleMasseter muscleMasticationMaxillaMercuryMesialMilk TeethMolarMottlingMouth GuardMouth RinseMouth UlcersMouthwash MasticationThe chewing and grinding of food prior to swallowing. It is the start of the digestive process.back