W2: Rad- Maxilla and Mandible Structures

Question 1

Relative Densities of Oral Cavity Structures

Answer 1

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

Question 2

Intermaxillary Suture

Answer 2

Question 3

Answer 3

Question 4

Answer 4

Question 5

Answer 5

Question 6

Answer 6

Question 7

Answer 7

Question 8

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Question 9

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Question 10

Answer 10

Question 11

Answer 11

Question 12

Answer 12

Question 13

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Question 14

Answer 14

Question 15

Anterior concho normally visible on

Answer 15

anterior PAs

Question 16

Answer 16

Question 17

Incisive foramen importance

Answer 17

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

Question 18

Superior Foramina of Npalatine canal normally visible on

Answer 18

occlusal x-ray

Question 19

Answer 19

Question 20

What will depression on bone look like?

Answer 20

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

Question 21

Answer 21

Question 22

Answer 22

Question 23

What effect could cause from nasiolabial folds?

Answer 23

MBEffect= could look like fracture

Question 24

Air sinuses single?

Answer 24

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

Question 25

Answer 25

Question 26

Answer 26

Question 27

Max sinus= max size when?

Answer 27

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

Question 28

Answer 28

Question 29

Question 30

Answer 30

hard palate

Question 31

Answer 31

Soft tissue of the gingival margin

Question 32

What is an oroantral communication (OAC)?

Answer 32

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.

Question 33

Answer 33

Question 34

Zyg process above which tooth?

Answer 34

upper 7/8s take molar PA with parallel technique (bissecting could overlap roots)

Question 35

Answer 35

Question 36

What are pterygoid plates?

Answer 36

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.

Question 37

Hamella notch

Answer 37

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

Question 38

What muscles attach to the lateral pterygoid?

Answer 38

Lateral Pterygoid M

Question 39

Hard palate is ______ line

Answer 39

horizontal line

Question 40

genial tubercles

Answer 40

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.

Question 41

Answer 41

Question 42

Answer 42

Question 43

MR located where

Answer 43

buccal sf, sometimes could overlap pathology

Question 44

Answer 44

Mental ridges

Question 45

Mfossa looks Radiolucent bc

Answer 45

depressions of bone

Question 46

Mental foramen can look like a PA RL overlapping what?

Answer 46

sometimes apical to PM, 1M or canine

Question 47

Answer 47

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

Question 48

Answer 48

RL line= mandibular canal. 2 ROpaque margins

Question 49

Answer 49

Question 50

Answer 50

Mandibular canal, can make roots look bit RL

Question 51

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Question 52

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Question 53

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Question 54

Answer 54

Submandibular Fossa

Question 55

IB of mandible

Answer 55

uniform RO line, thining of cortex= osteoporosis

Question 56

Answer 56

Question 57

Answer 57

External Oblique Ridge

Question 58

Answer 58

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

Question 59

Answer 59

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

Question 60

Answer 60