Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Module 5 Exam > Disorders of Tooth Formation > Flashcards

Disorders of Tooth Formation Flashcards

(62 cards)

Start Studying
1
Q

When do deciduous teeth start to erupt?

A

6 months old

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the first primary tooth to erupt?

A

Mandibular central incisor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the second primary tooth to erupt?

A

Maxillary central incisor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What age have all the primary incisors erupted by?

A

9 months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

When do the primary first molars erupt?

A

12-14 months old

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What age does the primary canines erupt?

A

16-18 months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What age does the last teeth (second molars) erupt into the mouth and complete the primary dentition?

A

24-30 months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What age does the first permanent tooth erupt and which tooth is it?

A

First molar - 6 yrs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

When does the first permanent incisor erupt?

A

7 yrs old

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

When does the second permanent incisor erupt?

A

8 yrs old

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

When does the first permanent premolar erupt?

A

9 yrs old

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

When does the second permanent premolar erupt?

A

10 yrs old

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

When do the permanent canines erupt?

A

11 yrs old

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

When do the permanent second molars erupt?

A

12 yrs old

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When do the permanent third molars erupt?

A

18-25 yrs old

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the morphological differences between primary and permanent teeth?

A

-Smaller
-Shorter crown
-Lighter colour - appears more white
-Thinner enamel and dentine
-Pulp horns are nearer the surface
-Pulp is relatively larger in regards to surrounding tooth
-Curved roots
-Contact points are flatter and wider

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is hypodontia?

A

Missing teeth as a result of them failing to develop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is anodontia?

A

a genetic disorder defined as the absence of all teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is ogliodontia?

A

Rare condition where more than 6 primary or permanent teeth are absent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What teeth are most commonly affected by hypodontia?

A

8s
5s
1s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the treatment for hypodontia?

A

Full/partial dentures
Implants
Composite advised to mask conical or mis-shaped teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is hyperdontia?

A

an excess number of teeth beyond the expected 20 deciduous and 32 permanent teeth
(supernumerary)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Is hyperdontia more common in males or females?

A

males

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What are mesiodens

A

a supernumerary tooth present in the midline or immediately adjacent to midline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What are paramolars?
a supernumerary molar usually small and rudimentary, most commonly situated buccally or palatally to one of the maxillary molars
26
What are distomolars?
a supernumerary tooth which is located distal to third molars
27
Is hyperdontia more likely to be seen in the maxilla or the mandible?
Maxilla
28
What is megadontia?
teeth larger than usual (big teeth)
29
What is an example of a case where megadontia may be seen?
cases of pituitary gigantism
30
What is microdontia?
teeth smaller than usual (small teeth)
31
What teeth are most commonly affected by microdontia?
maxillary lateral incisors and third molars
32
Is microdontia more common in males or females?
female
33
What is microdontia often associated with?
ectodermal dysplasia down syndrome
34
What can cause disorders of root size?
-Racial variation - shorter roots seen in people of oriental backgrounds and larger roots in patients of African origin -Irradiation of the jaws, or chemotherapy during root formation may lead to smaller roots -Possibly ortho treatment
35
What is germination?
1 tooth germ splits into 2 teeth, with 1 root canal
36
What is fusion?
union of 2 normally separated adjacent tooth germs, with 2 canals
37
What is concrescence?
joining of 2 teeth by cementum (root surface)
38
What is dilaceration?
Gross disruption of root formation, remainder of tooth forms at an angle
39
What is the treatment for disorders of tooth formation?
Primary dentition - no tx] Permanent dentition - depends on morphology of pulp chambers/root canals
40
What are invaginated teeth?
occurs when the palatal surface of the tooth enamel folds into the dentin during tooth development. AKA - dens in dente (toot within a tooth) pear shaped mass of enamel
41
Is the prevalence of dens in dente more common in males or females?
males
42
What is the treatment for invaginated teeth?
fissure seal soon after eruption vitality test/radiograph endo tx if pulp involvement
43
What are evaginated teeth?
small tubercle on occlusal surface of the premolar in the central part of the fissure pattern
44
What is the treatment for evaginated teeth?
radiographic evaluation to determine pulpal involvement (pulp horns in evagination) restricted and repeated grinding of the tubercle, following by fissure sealant removal of tubercle and limited pulpotomy may be required
45
What is a talon cusp?
horn like projection of the cingulum of the maxillary incisor teeth
46
what is the treatment for a talon cusp?
fissure seal margin possible pulpotomy no tx required if no interference with occlusion
47
What is taurodontism?
Bull like teeth Molar teeth where the pulp chambers of the teeth are enlarged vertically at the expense of the roots
48
What is amelogenesis imperfecta?
Generalised term for enamel defects affecting all (or predominantly all) of the teeth of both the primary and permanent dentition, effects ameloblasts alters tooth colour
49
what are the 2 classifications of amelogenesis imperfecta
hypoplasia hypomineralisation
50
what is enamel hypoplasia?
deficient enamel matrix resulting in thinner enamel, grooved or pitted, glossy, hard and translucent
51
what is enamel hypomineralisation?
defect in the mineralisation of the enamel, normal thickness but very soft, discoloured yellow-brown, opaque and chalky, prone to caries/enamel weak, enamel chips easily, poorly formed
52
what is dentinogenesis imperfecta?
an inherited disorder of dentine, effects odontoblasts, bluish tinge
53
what is congenital syphilis?
caused by spirocheate treponema pallidum, found in dental follicle. transmitted via placenta
54
what are the 3 anomalies found from congenital syphilis?
hutchinson's incisors mulberry molars moon's molars
55
what is hutchinson's incisors?
affects upper central incisors 'notch' on incisal edge mesio-distal narrowing or incisal edge may lead to an anterior open bite
56
what are mulberry molars?
affects first permanent molars occlusal surface is rough and pitted looks like a raspberry/mulberry
57
what are moons molars?
affects first permanent molars round or dome shaped
58
what are enamel pearls/enameloma?
small spherical enamel projection on a root surface (usually buccal) often mistaken for calculus
59
what is fluorosis?
a condition that causes changes in the appearance of tooth enamel. It may result when children regularly consume fluoride during the teeth-forming years
60
what os tertracycline staining?
tooth discoloration occurs when tetracycline binds with the calcium needed for tooth development.
61
what affect does jaundice have on the oral cavity?
jaundice is a condition that can cause yellow or green discolouration of teeth due to an alteration of the dentin as teeth are forming.
62
what is molar incisor hypomineralisation?
a tooth condition where the enamel is softer than normal

Module 5 Exam (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions