[Mutual relationships among anatomical characteristics of mandibular first molars. Periodontal point of view].
D006801:Humans; D008334:Mandible; D008963:Molar / Q000033:anatomy & histology*; D010510:Periodontal Diseases / Q000473:pathology; D010519:Periodontium / Q000033:anatomy & histology*; D014092:Tooth Root / Q000033:anatomy & histology / Q000473:pathology