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OHCP II > W2: Rad- Maxilla and Mandible Structures > Flashcards

W2: Rad- Maxilla and Mandible Structures Flashcards

1
Q

Relative Densities of Oral Cavity Structures

A

Metal
 Newer Composite restorations
 Enamel
 Dentine
 Lamina Dura (LD) dense white line around the socket
 Bone trabeculae and bone borders
 Muscle
 Fat
 Soft tissue of teeth: Pulp, Periodontal Ligament Space (PLS)
 Air

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2
Q

Intermaxillary Suture

A
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3
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13
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14
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15
Q

Anterior concho normally visible on

A

anterior PAs

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16
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17
Q

Incisive foramen importance

A

cyst could dev in that area. so know what is normal. normally small, cyst= big

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18
Q

Superior Foramina of Npalatine canal normally visible on

A

occlusal x-ray

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19
Q
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20
Q

What will depression on bone look like?

A

Radioluscent. could look like pathology. Tooth is in tact, PDL is intact= thus anatomy not pathology

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21
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22
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23
Q

What effect could cause from nasiolabial folds?

A

MBEffect= could look like fracture

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24
Q

Air sinuses single?

A

NO paired, we have 4 around nose
1. maxillary
2. sphenoidal
3. frontal
4. ethmoidal

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25
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A
26
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A
27
Q

Max sinus= max size when?

A

around 15 y.o will not grow after. but when they grow older and lose teeth, floor of sinus ext to sinus where teeth missing.

loss of height Acrest bone

28
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29
Q
A
30
Q
A

hard palate

31
Q
A

Soft tissue of the gingival margin

32
Q

What is an oroantral communication (OAC)?

A

lone standing molar with long curved roots (risk exposing sinus)

An oroantral communication (OAC) is an unnatural space that forms between the maxillary sinus and oral cavity following extraction of antral teeth, infection, or several different complications. If left untreated, an OAC can develop into an oroantral fistula (OAF) or chronic sinus disease.

33
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34
Q

Zyg process above which tooth?

A

upper 7/8s

take molar PA with parallel technique (bissecting could overlap roots)

35
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A
36
Q

What are pterygoid plates?

A

The lateral pterygoid plate of the sphenoid (or lateral lamina of pterygoid process) is broad, thin, and everted and forms the lateral part of a horseshoe like process that extends from the inferior aspect of the sphenoid bone, and serves as the origin of the lateral pterygoid muscle, which functions in allowing the mandible to move in a lateral and medial direction, or from side-to-side.

37
Q

Hamella notch

A

notch between pterygoid plates medial (has hamilla process) and lateral

38
Q

What muscles attach to the lateral pterygoid?

A

Lateral Pterygoid M

39
Q

Hard palate is ______ line

A

horizontal line

40
Q

genial tubercles

A

donut
a spiny protuberance or prominence (sometimes two) of bone located in the midline on the lingual aspect of the mandible below the roots of the incisor teeth. This structure serves as the locus of attachment for the genioglossus and geniohyoid muscles.

41
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42
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A
43
Q

MR located where

A

buccal sf, sometimes could overlap pathology

44
Q
A

Mental ridges

45
Q

Mfossa looks Radiolucent bc

A

depressions of bone

46
Q

Mental foramen can look like a PA RL overlapping what?

A

sometimes apical to PM, 1M or canine

47
Q
A

Mental foramen, shape varies on angle it opens and path of beam

48
Q
A

RL line= mandibular canal. 2 ROpaque margins

49
Q
A
50
Q
A

Mandibular canal, can make roots look bit RL

51
Q
A
52
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A
53
Q
A
54
Q
A

Submandibular Fossa

55
Q

IB of mandible

A

uniform RO line, thining of cortex= osteoporosis

56
Q
A
57
Q
A

External Oblique Ridge

58
Q
A

Inferior border of
the mandible is
sometimes seen on
periapical
radiographs
 Appears as a dense,
broad radiopaque
band of bone

59
Q
A

Coronoid process of mandible
 Coronoid process may be seen on
maxillary molar periapical radiographs
 Appears as a homogenous radiopacity
with some trabeculation
 Its appearance on maxillary periapical
radiographs results from the downward
and forward movement of the mandible
when the mouth is open

60
Q
A

OHCP II (20 decks)

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