Dental Anatomy1 (OBD 111) Introduction-1 PDF

 faculty of dentistry Oral biology department Dental Anatomy1 (OBD 111) Introduction-1 DR/ Eman Salem Lecturer of oral biology department PUA...

 faculty of dentistry Oral biology department Dental Anatomy1 (OBD 111) Introduction-1 DR/ Eman Salem Lecturer of oral biology department PUA (B.D.S., 2007) (M.Sc., 2012) (Phd.,2019) Faculty of Dentistry Alexandria University Dental Tissues 1) Enamel 2) Dentin 3) Cementum 4) Pulp Gingiva Peridontium (para-Dental tissues) - the tissues surrounding the tooth Periodontal ligament Gingiva Periodontal ligament (PDL) Cementum Cementum Alveolar Bone Alveolar bone proper  Anatomical And Clinical Crown Anatomical crown: is the part of the tooth covered with enamel. It does not change with age. Clinical crown: the part of the crown that is only seen in the oral cavity above the gum line. It increases with age. Alveolar process: The portion of the jaw which serves for tooth support. Alveolus: The bone of the tooth socket. Crypt: It is a bone surrounded cavity in the jaws in which development of a tooth takes place.  Classification of teeth 1) According to the arches a) Maxillary arch (maxilla) → maxillary teeth b) Mandibular arch (mandible) → mandibular teeth maxilla Maxillary teeth mandible Mandibular teeth 2) According to their appearance and persistence in the oral cavity a) Deciduous teeth (primary) ( 6 M → 5 Y ) b) Mixed dentition ( 6 Y → 10 Y ) c) Permanent teeth ( 11 Y → 18 ) The Dentitions Deciduous/primary teeth Permanent Dentition 3) According to functional categories A) Anterior teeth: - incisors (central & lateral) cut and incise the food. -canine. hold, grasp, pierce and tear flood substance. B)Posterior teeth: -pre-molars help in holding and tearing flood rather than incising it. -Molars *molars chewing and grinding of food. Dental formula for primary teeth Surface Anatomy of Teeth I, for incisor I C, for canine C P, for premolar P M, for molar M I M P  All teeth have 5 aspects Facial Lingual Mesial Distal Incisal Tooth surfaces Labial aspect Incisal aspect Mesial aspect Distal aspect Lingual aspect midline Palatal aspect