F.3 biology Ch. 6 牙齒結構及齒系

牙齒結構及齒系 English 1 teeth 2 mastication 3 Incisor 4 Chisel 5 cutting 6 Canine 7 Pointed 8 Tearing 9 Premolar 10 cusps 11 Molar 12 larger 13 Grinding / Crushing 14 crushing / grinding 15 Dentition 16 dental formula 17 Milk teeth 18 2102/2102 19 Permanent teeth 20 2123/2123 21 crown 22 neck 23 root 24 enamel 25 dentine 26 pulp cavity 27 periodontal membrane 28 cement 29 calcium 30 cement 31 periodontal membrane 32 bone 33 cytoplasm 34 living 35 blood vessels 36 nerve fibres

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