Post on 13-Dec-2015
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Primary teeth:eruption, Anatomy and morphology
By: A. Rashed M.Assistant Professor of Pediatric Dentistry
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• Which primary teeth, erupt first?• When do they erupt?
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• Which primary teeth, erupt second?• When do they erupt?
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• Which primary teeth erupt third?• When do they erupt?
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• Which primary teeth fourth?• When do the erupt?
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Upper A > upper B
Lower A < lower B
Upper A & B > lower A & B
(permanent and primary)
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Primary versus permanent incisors
• Size• Mesio-distal/inciso cervical• Incisal edge • Color• Cervical tapering
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Clinical situation
Chief complaint: My daughter’s permanent teeth are yellow
and big! Can they be restored and bleached?!...
How old is the child?
What will you answer?
Will the appearance improve?
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Cervical tapering?
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• What are the erupt fifth?• When do they erupt?
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• What primary teeth erupt fifth?• When do they erupt?
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How old is this baby?What problems may these teeth cause?
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• What primary teeth erupt 6th?• When do they erupt?
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• What primary teeth erupt 7th?• When do they erupt?
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Early childhood caries (ECC) :nursing caries: baby bottle tooth decay
mostly involved teeth:maxillary incisors
maxillary primary first molarsmandibular primary first molars
Mandibular incisors are not usually involved
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Why do you thinkmandibular incisors are not usually involved?
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Why do you think maxillary incisors,
maxillary primary first molars, andmandibular primary first molars
are involved more that other teeth?
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What can we do to prevent ECC?
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What primary teeth erupt 8th?When do they erupt?
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What primary teeth erupt last?When do they erupt?
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Lunch time!