title: Clinical investigation (in vivo) of endodontically treated maxillary first molars.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D003786:Dental Pulp Cavity / Q000002:abnormalities / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla; D008875:Middle Aged; D008963:Molar / Q000002:abnormalities / Q000033:anatomy & histology*; D012390:Root Canal Therapy