EXAM 3 DENTAL ANATOMY

primate spaces

the name for interproximal spaces between the primary teeth that are present in most child patients

between the maxillary lateral incisor and canine and between the mandibular canine and first molar

in the primary dentition where are primate spaces located

deciduous (type of trees that shed leaves)

The primary dentition is shed and replaced by the permanent dentition, because of this what is it called

6-10 months

when does the first eruption of a primary tooth occur

mandibular central incisor

what’s the first tooth of the primary dentition to erupt

attrition

In the primary dentition, gradual loss of tooth structure is usually present, what is this called

masticatory surfaces

what surfaces of the primary dentition is attrition usually present on

premolars

What teeth do the permanent dentition have that the primary dentition doesn’t

because enamel and dentin are thinner

Why is the risk for endodontic complications greater for the primary dentition

early childhood caries (ECC)

a dental condition that occurs as a result of being given a bottle at bedtime resulting in prolonged exposure of the teeth to milk or juice causing caries to form

between 12 months and 3 years

what age does early childhood caries occur

because pools of milk or juice break down to lactic acid and other decay causing substances

how does early childhood caries cause caries to form

etiologic

Early childhood caries is considered a BLANK factor in children

baby bottle tooth decay

what is early childhood caries also referred to as

eliminating bedtime feeding or using water instead of milk or juice

what are preventative measures for early childhood caries

more constricted or narrower at the cej

describe crowns of the primary dentition

narrower

describe occlusal table of primary dentition

broad and flat

Describe contacts of the primary dentition

primary dentition has a smaller crown to root ratio

Compare crown to root ratio of primary dentition and permanent.

flare more as they approach the apex

describe the molar roots of the primary dentition

larger, mesial pulp horns of molars

In the pulp cavity, the pulp chambers and pulp horns are BLANK in the primary dentin than the permanent dentition. especially the ..

thinner, caries will reach the pulp chamber quicker

In the primary dentition, the dentin is BLANK overall compared to permanent dentition. how does this effect caries

mandibular 2nd molar

Although in the primary dentition the dentin is usually thinner in some cases it can be thicker, especially in the..

relatively thin and whiter tone

describe the primary dentition enamel

prominent

The primary dentition has a more BLANK cervical ridge than permanent dentition

labial and lingual surfaces of anterior teeth and lingual and buccal surfaces of the molars

where is the cervical ridge present on the primary dentition

primary maxillary central incisors

Unlike permanent successors, the BLANK teeth have no mamelons

primary first molars

which teeth don’t resemble any other tooth in any dentition

second molars, first molars

The crown of each primary BLANK in both arches, will resemble the BLANK of the permanent dentition

distal

The first permanent molars will erupt BLANK to the primary second molars

bucco-lingually

The occlusal table of primary molars is more constricted BLANK than with permanent molars

aggressive periodontitis

localized or generalized inflammatory changes in the periodontium of prepubertal children

severe pocketing and rapid destruction of alveolar bone

what is aggressive periodontitis characterized by?

permanent first molars and mandibular incisors

In aggressive periodontitis rapid destruction of alveolar bone occurs especially around what teeth?

odontogenesis

the process of tooth development

initiation

the first stage of tooth development

induction

which of the main processes is involved in the initiation stage

the embryos stomodeum (primitive mouth) is lined by the ectoderm

In the initiation stage what happens at the beginning of the 6th week?

the oral epithelium grows deeper into the ectomesenchyme and is induced to produce a layer called the dental lamina

In the initiation stage, what happens at the later part of the 7th week?

anodontia or hypodontia, ectodermal dysplasia, and supernumerary teeth (hyperdontia)

what clinical disturbances can occur during the initiation stage

initiation, dental lamina

Lack of BLANK within the BLANK results in the absence of a single tooth, multiple teeth, or an entire dentition producing anodontia or hypodontia

partial, permanent third molars, maxillary lateral incisors, and mandibular 2nd premolars

which kind of anodontia is more common and what teeth does it most commonly occur in, list them in order of occurence

ectodermal dysplasia, because many components of the tooth germ are indirectly or directly of ectodermal origin

Anodontia can be associated with what syndrome and why

skin, hair, nails, teeth, or sweat glands

ectodermal dysplasia is a group of conditions in which there is abnormal development of what

abnormal initiation, supernumerary teeth (hyperdontia)

BLANK may result in the development of one or more extra teeth, which are considered BLANK

between the maxillary central incisors (mesiodens)

what region commonly has supernumerary teeth

bud stage

what is the second stage of odontogenesis (beginning of the 8th week)

proliferation of the dental lamina into buds, with these three dimensional oval masses penetrating into the surrounding ectomesenchyme

The bud stage is named for an extensive…

macrodontia and microdontia

what are clinical considerations or disturbances of the bud stage

abnormal proliferation

what causes macro or microdontia

macrodontia

abnormally large teeth

microdontia

abnormally small teeth

true partial microdontia

Hereditary factors are involved with what kind of macro/microdontia

permanent maxillary lateral incisor

which tooth does partial microdontia most commonly occur

peg lateral

name for permanent maxillary lateral incisor with microdontia

hypopituitarism or down syndrome

Complete microdontia rarely occurs, but can be associated with what

cap stage

what is the third stage of odontogenesis