Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Dentistry > Dental Radiographs > Flashcards

Dental Radiographs Flashcards

1
Q

Name the abnormality that is shown in the tooth below:

A

Supernumerary root of the mandibular 4th premolar

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

Compare and contrast when the parallel and bisecting angle techniques of teeth radiography should be used:

A
  • Parallel technique - useful for mandibular molars and premolars
  • Bisecting angle technique - all teeth in the mouth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Describe the principle of a parallel X-ray technique:

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

Describe how the bisecting angle technique is performed:

A
  • Used where the film cannot be placed parallel to the long axis of the tooth
  • Shoot perpendicular to the bisecting angle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the standard radiographic projections?

A
  • Rostral maxillary
  • Rostral mandibular
  • Right & left maxillary: may need one cranial and one caudal
  • Right & left mandibular: may need one cranial and one caudal
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Describe how you would take the 6 radiographic projections?

A
  1. Right maxilla: Animal in VR - 45 degree bisecting from the right side
  2. Maxillary incisors: Animal is in VR - 55 degree angle from dorso-ventral angle
  3. Left maxilla: Animal in VR - 45 degree bisecting angle from the left hand side
  4. Left mandible: Animal in DR - 45 degree bisecting angle from left hand side
  5. Mandibular incisors: Animal in DR - 55 degree from horizontal
  6. Right mandible: Animal in DR - 45 degree angle from the horizontal
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Name the process that is shown in the image below:

A

Palatine processes of the maxilla

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

Name the structures that are shown in the mandible below:

A
  1. Mandibular canal
  2. Mental foramina
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Name the radiographic feature that is shown below:

A
  1. Middle mental foramina
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Name the radiographic feature that is shown in the X-ray below:

A

Chevron - normal radiolucency @ the base apex - non-diseased tooth (common in maxillary incisors, maxillary canines and mandibular molar 1)

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

Name the features that are shown in the radiograph below:

A
  1. Chevron - normal radiolucency apically on the tooth
  2. Cervical burn out - @ neck of tooth - more radiolucent due to thinning of the enamel just above the start of alveolar bone
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Name the structure that is shown in the image below:

A

Mandibular canal

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

Name the structures that are shown in the diagram below:

A
  1. Palatine fissure
  2. Incisive canal
  3. Chevron
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Describe the appearance of deciduous teeth:

A
  • Relatively smaller
  • Less radio-dense than permanent
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Describe the structure of the normal young adult tooth:

A
  • Dentine is thin → secondary dentine is laid down as animal ages
  • Pulp chamber is large
  • Initially the root apex is open → as animal ages will close in 9-12 months
  • Lamina dura is quite distinct
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Compare the canines in the cat to the dog:

A

Canine is much straighter in a dog compared to a cat

17
Q

Describe the four normal features of periodontal anatomy that should be seen in the teeth:

A
  1. Crestal bone - should be close to CEJ (approximately 2mm apically) - normally a pointed angle
  2. Lamina dura - dense lining of alveolus - seen as a white line
  3. Periodontal ligament - appears as a black line
  4. Furcation - present right into furcation
18
Q

What are the four stages of alveolar bone loss and what would you expect to see with each in terms of bone loss?

A
  • 1: Gingivitis, no attachment loss
  • 2: Mild <25% alveolar bone loss
  • 3: Moderate 25-50% alv bone loss
  • 4: Severe > 50% alv bone loss
19
Q

How much bone loss must occur for radiographic signs of periodontal disease to become apparent?

A

40% of the bone must be lost for it to be visualised on Xray

20
Q

Name the two features that comprise attachment loss:

A
  1. Attachment loss
  2. Gingival recession
  3. Periodontal pocket

Attachment loss = gingival recession + periodontal pocket depth in mm

21
Q

Describe the features that you would expect too see in Stage 0 Periodontal disease:

A
  1. Clean crowns
  2. Tartar is starting to develop
  3. Gum margins are flat and pink → creates a scalloped edge against teeth
  4. Bone levels are just under the bulge of crown (NO BONE LOSS)
22
Q

What are the clinical signs seen in Stage 1 periodontal disease?

A
  • Build up of tartar and slightly reddened/swollen gums (NO BONE LOSS)
23
Q

What is seen radiographically in Stage 2 periodontal disease?

A

0 - 25% bone loss - fuzzy where it should be sharp

24
Q

What is seen in Stage 3 periodontal disease?

A

25-50% bone loss has occurred

25
Q

What percentage of bone loss is seen in Stage 4 periodontal disease?

A

Greater than 50% bone loss

26
Q

What is typically observed in periodontitis?

A

Horizontal and vertical bone loss

27
Q

What are the radiographic signs of endodontic disease that may be seen?

A
  • Disrupted crown
  • Widening of endodontic canal
  • Internal reabsorption
  • Periapical lucency - bulbous w/lack of lamina dura
28
Q

Name the radiographic abnormality shown in the image below?

A
  1. Periapical lucency
29
Q

Name the type of tooth resorption that is shown in the image below:

A

Type 1 tooth resorption

30
Q

Name the type of tooth resorption that is shown below:

A

Type 2 tooth resorption

31
Q

Name the type of tooth resorption that is shown below:

A

Type 3 tooth resorption

32
Q

Name the condition that is shown in the radiograph below:

A
  • Hypercementosis - thickened cementum (often apical 3rd - makes extraction more difficult)
33
Q

What are the four main types of cysts that can occur in teeth?

A
  1. Dentigerous cyst - unerupted tooth especially mandibular premolar 1 (Boxers)
  2. Radicular cyst - from endodontic disease
  3. Primordial cyst - degeneration of tooth bud
  4. Odontogenic tumours
34
Q

Name the most likely type of tumour shown in the radiograph below:

A

Peripheral Odontogenic Fibroma - ossifying type (no invasion of bone)

35
Q

Name the most likely type of tumour demonstrated in the radiograph below:

A

Ancathomatous ameloblastoma - local invasion of the mandible - slow growth resulted in teeth being pushed apart

36
Q

Name the most likely neoplasm in the mouth of the dog shown below:

A

SCC -→ leading to destruction of the mandible

Dentistry (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions