Ultra-sonics in hard tissues.
D000818:Animals; D001031:Apatites; D001842:Bone and Bones; D002417:Cattle; D003094:Collagen; D003731:Dental Caries / Q000175:diagnosis; D003743:Dental Enamel; D003782:Dental Pulp; D003804:Dentin; D003945:Diagnosis, Oral / Q000295:instrumentation*; D006801:Humans; D014074:Tooth Calcification; D014465:Ultrasonics / Q000295:instrumentation*
D001031:Apatites; D003094:Collagen