Radiography- Special investigations: Sensibility tests.

Question 1

what is the dental pulp and what are its 3 fuctions?

Answer 1

1. it is specialised connetive tissue and
2. its functions
   
   1. dentine formation
   2. defence and repair
   3. sensory

Question 2

lable the following diagram with:

Coronal pulp chamber

Radicular pulp

Pulp horns

Apical foramen

Answer 2

Question 3

when the roots bifercate multiple times what is this called ?

Answer 3

Apical Delta

Question 4

what are the 4 similarities between the Pulp and connective tissue?

Answer 4

1. Main cell type- Fibroblasts
2. Fiber involved- collagen matrix
3. both have blood vessel and nerves
4. 75% water and 25% Organic

Question 5

what are the difference between Pulp and Connective tissue?

Answer 5

1. Pulp has a rigid chmaber
2. Pulp has odontoblasts- produce dentin
3. Pulp has no oxytalan fibres.
4. no mast cells
5. Densely innervated

Question 6

what is oxytalan fibes and what is the significance of fibrilin

Answer 6

run parallel to the surface of the tooth and bend to attacth to cementum.

Fibrinllin builds these fibers giving it the elastic behaviour.

Question 7

lable the diagram:

cell rich zone

Pulp core

Cell-free zone of Weil

Odontoblast Layer

Answer 7

Question 8

blood supply to the pulp is:

Answer 8

rich blood supple which terminates in the rich sub odontoblastic capillary plexus. near the rich zone

high perfusion rate

Question 9

Pulp innervation is:

Answer 9

1. rich
2. mainly sensory- afferent
3. efferent sympathetic blood flow control
4. Pulpal sensation

Question 10

how do we assess pulpal status

Answer 10

by using special investigations-

radiographs

Sensibiloity tests

Percussion test

Question 11

why is it to localise pulp pain?

Answer 11

highly innervated so hard to locate the pain

Question 12

what is vitality testin ?

Answer 12

tests for pulp alive though

Blood supply

Laser Doppler Flowmetry

Complex procedure

Question 13

sensitivity testing is:

Answer 13

does the pulp have an exaggerated ersponse to a stimuli

Question 14

what is sensibility testing?

Answer 14

assesssment of pulps sensory response

+ve test= vital tooth

-ve test= non vital tooth

Question 15

Ethy Chloride is best for what teeth ?

Answer 15

anterior teeth

Question 16

EPT is good but what must be made sure when carrying this test out.

Answer 16

1. dry tooth
2. avoid metal restoration
3. test healthy teeth first as a control
4. avoid stimulus spread to gingivae
5. good electrical contact with teeth
6. gradually increase stimulus
7. if these are not controlled there might be false +ve/ -ve

Question 17

what is Sensitivity

and

what is the equation for it ?

Answer 17

ability to detect diseased pulp

and

TP/(TP+FN)

Question 18

what is Specificity

what is the equation for it ?

Answer 18

ability to identify pulp without disease

TN/(TN+FP)