Ch 13 Pulp Chambers and Canals Flashcards
1
Q
what is dental pulp?
A
soft tissue component of tooth, filling internal cavities
- originates from mesenchyme
- outline of pulp corresponds to external outline of tooth
2
Q
Functions
A
- formative- making dentin
- nutritive
- sensory- controls blood flow, sensation of pain
- defensive- any irritation
3
Q
Clinical applications
- Functions of Dentist
- be aware of
- know location of
- Endodontics require thorough knowledge
*must recognize internal signs of additional canals during endodontic procedure
A
- prevent, intercept, treat diseases
- location, size
- mandibular canal and nerve
- of pulp cavity, size and location, and the expected number of roots and canals
-radiographic detection of all accessory roots or canals may not be possible
4
Q
Max CI
-Labioling
A
- p. cavity follows gen outline of crown and root
- p. chamber is narrow in incisal region, but increases at cervical
- in cervical, p. chamber increases to its largest labioling dimension
5
Q
Max CI
-Mesiodistal
A
- p. cavity conforms to gen shape of outer surface
- p. chamber wider mesiodistally > labiolingually
- if there are mamelons, pulp horns are present
- apical foramen is slightly off center from tip of root, but some deviate drastically
6
Q
Max CI
-cervical/midroot
A
- p. cavity widest at cervical level
- p. chamber is generally centered w/in the dentin of root
-ex: in young person, p. chamber base of a triangle is labial root, secondary dentin increases, p. chamber becomes more round.
- at cervical, root outline form is triangular w/ rounded corners, but some square w/ round corners
- root and pulp canal rounder at midroot, same anatomy as cervical, just smaller in all dimensions
7
Q
Max LI
-labioling
A
- anatomy similar to CI
- p. cavity follows external outline of crown and root
- prominent pulp horns
- p. chamber narrows at incisal, but wide at cervical
- apical foramina found at tips
8
Q
Max LI
-mesiodistal
A
- p. cavity follows external outlineof tooth
- pulp horns are blunted
- chamber and canal taper toward distal apical w/ a curve
9
Q
Max LI
-cervical/midroot
A
- root form shows variation depending on the tooth
- p. chamber centered w/in root
- outline form may be triangular, oval, or round so that it follows outline of root.
10
Q
Max Canine
-Labioling
A
- pulp chamber is largest
- prominent cusp and horn
- wide pulp chamber and incisal or 1/2 of root
- constriction at apex
- largest of any tooth in the mouth
11
Q
Max Canine
-mesiodistal
A
- p. cavity narrower
- tapers from incisal aspect to apical foramen
- mesial or distal curve of root may be present
- apical foramen may exit at the tip of root located distally or mesially
12
Q
Max Canine
-cervical
A
- triangular, oval, elliptical
- pulp chamber and canal may be centered bet crown and root
13
Q
Mand Canine
A
- similar to max canine
- 2 canals
- dentin island- wide labioling dimension, narrow MD
- pulp horn prominent if theres no evidence of attrition
14
Q
Mand Canine
-cervical
A
- triangular, oval, rectangular
- cervical cross sect at cementoenamel junction, exposing the pulp chamber. these are the openings to root canals that will be seen in the floor of pulp chamber.
