Oral Anatomy
Chapter One
Introduction
Teeth’s Structure,
Classification and Function
一 Teeth’s structure
(一) Surface’s structure
1 crown
Anatomic crown
Clinical crown
2 root
Anatomic crown
Clinical crown
3 neck,cervical line
(二) Internal Structure
1 enamel
2 cementum
3 dentin
4 dental pulp
二 Teeth’s Classification
(一) According to the teeth’s shape
and function,incisor,canine,premolar
and molar,
(二) permanent teeth,
primary(deciduous) teeth
(三) anterior teeth,posterior teeth
三 Teeth’s Function
(一) Mastication
(二) Pronunciation and Speech
(三) Facial ethic
Eruption of the teeth,
Notation of the dentition
一 Notation of the dentition
(一) Palmer notation system
1 Permanent dentition
2 primary dentition
(二) Universal notation system
primary dentition,1d— 20d
permanent dentition,1— 32
(三) FDI system:(Federation
Dentaire Internationale)
two-digit system
二 Eruption of the teeth
(一) Eruption of the primary teeth
A B D C E
(二) Eruption of the permanent teeth
maxillary,61245378
mandible,61234578