at what age are primary dentition started to be replaced by permanent

6

what are first primary teeth to erupt usually, around when

mandibular central incisor, at about 6 months of age

what are last primary teeth to emerge, completing primary dentition and what age

maxillary second molars30 months of age , almost 3

permanent teeth which replace their primary predecessor are called

succedaneous teeth

the primary molars are replaced by

premolars

the permanent molars erupts ________ to the primary second molars, not _______

distally, succedaneous

do mandibular or maxillary teeth erupt first

mandibular

what is more important sequence or timing

sequence

for crowns of primary teeth, enamel rods in the cervical area are directed

occlusionally

prominent mesiobuccal cervical ridge seen in

primary molars

where are crowns of primary teeth constructed

in cervical portion

on the labial surface of crowns on the incisors for primary anterior teeth, where are the perikymata

there is none, its a smooth surface

on what teeth on anterior primary are the mammelons

there is none on their incisal edges

on primary anterior teeth, the cingula are

prominent and occupy about one third of cervoinsical length

what tooth on primary dentition has a greater mesiodistal width than incisocervical height

primary maxillary central incisors

what tooth on primary dentition has a greater mesiodistally than faciolingually

primary maxillary central incisors

on primary maxillary central incisors, describe the labial surfaces

labial surfaces are smooth, usually no depressions

on the primary maxillary later incisor describe the mesiodistal and faciolingual dimensions

essentially equal

distoincisal angel is rounded on which primary incisor

primary maxillary lateral incisor

symmetrically flat when viewed from buccal

primary mandibular central incisors

describe the mesiodistal and faciolingual dimensions on primary mandibular central incisors

essentially equal

describe labial aspect of primary mandibular central incisors

relatively smooth, but may have shallow depressions on their labial surfaces in the incisal third

describe mesiodistal and faciolingual dimensions on primary mandibular lateral incisors

essentially equal

incisal edge slopes toward distal and distoincisal angel more rounded on which tooth on primary dentition

primary mandibular lateral incisors

describe the roots of primary incisors compared to their crowns

about twice the size

what do the crowns of the primary mandibular incisors resemble

permanent mandibular incisor crowns, but much smaller

crown constricted at cervical region on what tooth

primary maxillary canine

compare root and crown of primary maxillary canine

root is more than 2x crown

has a well developed sharp cusp, and cingulum is bulky with well developed mesial and distal marginal ridges which are less prominent than on permanent canines

primary maxillary canine

describe primary mandibular canine in respect to primary maxillary canine

similar, well developed and sharp cuspcrown shorter and narrower labiolingually

primary maxillary canine may be as _______ as they are ______

long as they are wide

mandibular primary canines are longer __________ than wide ____________

incisocercially than wide mesiodistally

maxillary canine cusps are often ___________ with two cusp ridges meeting at an ______ angle

very sharp (pointy_acute

roots of maxillary and mandibular canines taper mostly in the __________ where they are bent labially

apical third

what are longest primary teeth

maxillary canine roots

the cercival third on primary canines is much _________ than on incisors

thicker

describe the molar crowns of primary posterior teeth

wide mesiodistally but very shirt cervico-occlusally

in primary postier teeth which molars are bigger

second molars larger than first

describe the buccual cusps on molars for primary posterior teeth

not pointed or sharp

are there a lot of depression and grooves in crowns on primary posterior teeth

no

what is prominent on primary posterior teeth characteristics

mesial cervical ridge

what does a primary molar lack

identifiable root trunk

describe the molar roots or primary and secondary molars, and compare them to permanent molars

the second molar roots are spread more widely than first, this is OPPOSITE of permanent molars

do primary or permanent maxillary molars have more pronounced cervical ridges

primary , especially on buccal aspect

roots of primary molars flare out ________ the cervix than the permanent teeth

nearer

roots of primary teeth are ______ and more _______ in comparison with crown size of permanent teeth

longer and more slender