caries interpretation

Question 1

caries prevalence

Answer 1

• one of the most prevalent human
  diseases
• decreasing prevalence rate finally
  occurred in 1980’s

Question 2

caries a dx of?

Answer 2

civilized society

Question 3

caries associated with what diets? socio-economic?

Answer 3

highly refined sugar and retentive food diets that remains prevalent in lower socio-economic groups.

Question 4

greatest cause of tooth loss <35 years

Answer 4

caries

Question 5

DENTAL CARIES
Pathophysiology

Answer 5

plaque composed of polysaccharide /enzyme matrix with bacterial colonies that attach to tooth surfaces

bacteria metabolize dietary carbohydrate producing acid byproducts that lower pH below 5.5 threshold to decalcify teeth

Question 6

DENTAL CARIES
Predisposing Factors

Answer 6

1. bacteria –varies- dependent on host
   a. lactobacillus casei
   b. streptococcus mutans
   c. actinomyces viscosus
2. diet –glucose
3. plaque retention
4. OH compliance
5. saliva - concentrations of salivary glycoproteins and immunoglobulins

Question 7

DENTAL CARIES Signs, ranges?

Answer 7

ranges from slight demineralization to gross coronal decay

Question 8

defects of caries appear as violations of:

Answer 8

i. - smooth surfaces, usually at
inaccessible areas
ii. - pit and fissures of occlusal
and occasional proximal surfaces

Question 9

diagnosis of caries

Answer 9

i. easy to diagnose
ii. Not so easy to stage
iii. Harder to treatment plan

Question 10

preffered image for caries diagnosis

Answer 10

bitewings (horizontal)

Question 11

what is acceptable HA for horizontal bitewings

Answer 11

anyhting less than 1/2 enamel overlapped

Question 12

PA’s and caries detection

Answer 12

1. Helpful for caries detection if XCP technique used to minimize linear distortion in the vertical dimension
2. Horizontal angulation must project non-overlappedcontacts

Question 13

vertical bitewings not as useful because?

Answer 13

a. technique problems from bending of the film
b. Difficulty placing film to open contacts

Question 14

when could a vert BW work?

Answer 14

high palate

Question 15

Factors affecting Caries Presentation
1. Angle of?
2. Placement of?
3. Location of?
4. Degree of?
5. Exposure?
6. cavitation?
7. light intensity?
8. Monitor?
9. postprocessing algorithms on digital images?

Answer 15

1. Angle of the x-ray beam
2. Placement of the image receptor
3. Location of the proximal carious lesion (i.e. exactly cervical to the contact or slightly buccal/lingual)
4. Degree of hypomineralization
5. Exposure factors; low kV vs high kV;
6. Degree of cavitation
7. Ambient light intensity
8. Monitor contrast resolution calibration
9. Selection of postprocessing algorithms on digital images

Question 16

Factors affecting perception of digital display

Answer 16

• monitor resolution
• monitor luminescence
• background lighting affect

Question 17

medical image grade monitors for dentistry ?

Answer 17

not proven to be necessary

Question 18

caries classification system used at UMKC

Answer 18

IC=Initial caries
MC=Moderate caries
AC=Advanced caries
RSC-Root surface caries
R RC=Recurrent caries
B/Li = B or Li caries

Question 19

IC

Answer 19

Question 20

UMKC class?

Answer 20

IC

Question 21

UMKC class

Answer 21

IC

Question 22

MC

Answer 22

Question 23

UMKC class?

Answer 23

MC

Question 24

AC

Answer 24

Question 25

umkc class

Answer 25

AC

Question 26

umkc class?

Answer 26

AC

Question 27

# app? demo? common areas? RSC

Answer 27

- Saucerized or scooped-out appearance - 50% prevalence in geriatric population due to bone loss - Most common in B premolar regions, then, followed by Li & interproximal areas

Question 28

Answer 28

RSC

Question 29

RC

Answer 29

recurrent caries, occur at restoration margins

Question 30

Answer 30

RC

Question 31

# more common side/why? easily localized? B/Li caries

Answer 31

occurring on B/L surfaces usually on buccal (tongue can remove L plaque) Difficult to localize on a single view May superimpose pulp

Question 32

Answer 32

likely B carie

Question 33

International Caries Detection and Assessment System classes

Answer 33

* E1 * E2 * D1 * D2 * D3

Question 34

E1-D3 classified

Answer 34

E1: Lesion within outer ½ of enamel E2: Lesion within inner ½ of enamel D1: Lesion within outer 1/3 of dentin D2: Lesion within middle 1/3 of dentin D3: Lesion within inner 1/3 of dentin

Question 35

E1 Interproximal Caries

Answer 35

* Penetrates < ½ the enamel thickness as a radiolucent notch on the outer surface of the tooth

Question 36

ICDAS class

Answer 36

E1

Question 37

E2 Interproximal Caries

Answer 37

* Penetrates > ½ the enamel thickness * May have an isosceles triangular outline with the base at the proximal surface * Does NOT extend to DEJ

Question 38

ICDAS class

Answer 38

E2

Question 39

D1 Interproximal Caries

Answer 39

* Undermines enamel and extends into dentin * at or axial to the DEJ * Penetrates < 1/3 the outer peripheral dentin thickness

Question 40

ICDAS class

Answer 40

D1

Question 41

D2 Interproximal Caries

Answer 41

* The dentin lesion is a more extensive dentin lesion * Penetrates to mid 1/3 of the dentin thickness

Question 42

ICDAS class

Answer 42

D2

Question 43

ICDAS class

Answer 43

D2

Question 44

D3 Interproximal Caries

Answer 44

* The dentin lesion is more extensive than the enamel lesion * Penetrates > 2/3 (or inner 1/3) of the dentin thickness

Question 45

ICDAS class

Answer 45

D3

Question 46

ICDAS class

Answer 46

D3

Question 47

Interproximal “Burn out”

Answer 47

A. The dentin artifact simulates caries B. Lesion is outlined by normal anatomic structures and is a relative radiolucency

Question 48

what is this lesion?

Answer 48

cervical burnout B/L line angles are not aligned

Question 49

Answer 49

burnout

Question 50

Incipient Occlusal Caries on radiographs

Answer 50

* Difficult to detect on radiographs due to - small width of the lesion - density of superimposing enamel

Question 51

Moderate Occlusal Caries on radiographs

Answer 51

* Broad-based thin radiolucent zone in dentin with no changes in enamel * Noticed as a relative increase in opacity between pulp and caries

Question 52

Answer 52

moderate occlusal caries

Question 53

Severe Occlusal Caries on radiogrpahs

Answer 53

* Undermined enamel with gross loss of tooth structure