Teeth
Teeth
Teeth Central incisors Lateral 7-8yn incisor uspid 9y(11-12yn General features 1st Premolar (10-11yn Two sets (10-12y7) dental 1st Molar 6-7yr) a Deciduous Central incisors (7.5 mo 2nd Molar Lateral incisor(9 mo (12-13yn a Permanent Cuspid(18 mo) Hard palate 3rd Molar Prima (17-21yn Classification 1st molar (14 mo 3rd Molar P o Incisors 2nd molar 2nd Mola (11-13y 1st Molar o Canine Prima 2nd Premolar (11-12yr) 口 Premolars P Lower 1st molar 1st Premolar (10-12yn) 口 Molars Cuspid (16 mo Cuspid (9-10 yr) A Lateral incisor(7 mo Lateral incisor(7-8 yr) Central incisors Central incisors(6 mo 6-7y
Teeth General features ◼ Two sets: ❑ Deciduous ❑ Permanent ◼ Classification: ❑ Incisors ❑ Canine ❑ Premolars ❑ Molars
Deciduous teeth 20 in number, ten teeth in each mandibular and maxillary arch Deciduous central incisor deciduous lateral incisor deciduous canine first deciduous molar, second deciduous molar in each quadrant Upper II mⅣ V total20 Lower jaw in. in. can. mol. mol Eruption: stars at about 6 mouth of age and continues to beginning of 3rd year Shedding: occurs between 6th and 12th years with replacement by permanent teeth
Deciduous teeth ◼ 20 in number, ten teeth in each mandibular and maxillary arch ◼ Deciduous central incisor , deciduous lateral incisor , deciduous canine , first deciduous molar ，second deciduous molar in each quadrant Upper jaw Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ total 20 Lower jaw in. in. can. mol. mol. ◼ Eruption: stars at about 6 mouth of age and continues to beginning of 3rd year ◼ Shedding: occurs between 6th and 12th years with replacement by permanent teeth Ⅱ Ⅳ
Deciduous teeth Deciduous central incisor Deciduous lateral incisor Deciduous canine First deciduous molar Second deciduous molar
Deciduous teeth Deciduous central incisor Deciduous lateral incisor Deciduous canine First deciduous molar Second deciduous molar
Permanent teeth(adult) 32 in number, sixteen in each mandibular and maxillary arch Two incisors, one canine, two premolars, and three molars in each quadrant Upper jaw 123 78 total 32 Lower jaw First permanent molar- appears at about 6 years Third molars wisdom teeth)-many erupt at any time after 12 years of age or not at all (impaction) 7
Permanent teeth (adult) ◼ 32 in number，sixteen in each mandibular and maxillary arch ◼ Two incisors, one canine, two premolars, and three molars in each quadrant Upper jaw 1 2 3 4 5 6 7 8 total 32 Lower jaw ◼ First permanent molar－ appears at about 6 years ◼ Third molars (wisdom teeth)－many erupt at any time after 12 years of age or not at all (impaction). 3 7