Extra Lectures Flashcards
(24 cards)
Canine Guided Occlusion: # Lateral excursive guidance is provided by the \_\_\_\_ on the working side
canine
Group function/Group guidance: # Lateral excursive guidance is provided by the \_\_\_\_ on the working side, \_\_\_\_ and possibly \_\_\_\_
canine
premolar(s)
molar(s)
Interferences
! Maxillary Quadrant
Prevent Interferences (unwanted contacts) in Excursive Movements:
“ Working Interference:
• Premature contact on the working side in
lateral excursion
• Between ____ Supporting cusp FOAs and ____ guiding inclines
mandibular
maxillary
Interferences
! Maxillary Quadrant
Prevent Interferences (unwanted contacts) in Excursive Movements:
“ Non Working Interference:
• Premature contact on the non working side
in ____ excursion
• Between ____ of the Mandibular and Maxillary ____
• ____ desired guidance contact on the the working side
lateral
inner inclines
supporting cusps
prevents
Interferences
! Maxillary Quadrant
Prevent Interferences (unwanted contacts) in Excursive Movements:
“ Cross Tooth Interference:
• Premature contact on the ____ side in
lateral excursion
• Between ____ of the Mandibular ____ cusp and Maxillary ____
working
inner inclines
non-supporting cusp
supporting cusp FOA
Interferences – Review: ! Working Side: " Working Interference • Mand \_\_\_\_ and Max \_\_\_\_ " Cross Tooth Interference: • Mandibular \_\_\_\_/Max \_\_\_\_
! Non Working Side:
“ Non Working Interference
• ____
supporting cusp FOA
non-supporting cusp guiding inclines
non-supporting cusp
supporting cusp FOA
inner inclines supporting cusps
Anatomy of Carbide Bur
- Rotates ____
counterclockwise
Occlusal Adjustment - Purpose
Purpose:
1. To establish a stable intercuspal position at an acceptable ____.
- To eliminate ____ in excursive movements
Example: worn dentition - To reduce ____ forces
Contacts that are “off axis” can cause the teeth to become loose or accelerate bone loss
4. To create a more favorable: \_\_\_\_ Curve of Wilson \_\_\_\_ Aesthetic appearance
- To treat occlusal pathology
“Occlusal trauma” Example: ____
VDO/OVD
interferences
horizontal excursive
curve of spee
occlusal table
fremitis
Occlusal Adjustment
3 Stages:
1st: Establish stable, uniform ____
2nd: Define ____
3rd: Confirm freedom of ____
occlusion
FOAs
mandibular movement
Stage I: Where to grind:
Adjust ____ and mandibular ____ only
supporting cusps
anterior FOAs
Stage I - completed
- No ____ in MIC
- landmarks correct
- acceptable ____
- ____ in readiness
centric slip
VDO
FOA’s
Stage II: Where to grind:
Adjust ____ areas only
FOA
Selective Grinding - Stage III
Working interferences:
Working side
Mand ____ and the MAXILLARY ____.
The contact interferes with the excursive movement
FOA, supporting cusp
guiding incline, non-supporting cusp
Selective Grinding - Stage III
Non Working interferences:
Non-working side
____ OF THE MAXILLARY and MANDIBULAR ____ CUSPS
Prevents desired tooth contact on the ____.
inner inclines
supporting
working side
Selective Grinding - Stage III
Cross Tooth interferences:
Working side between the MAXILLARY ____ and the MANDIBULAR ____.
FOA, supporting cusp
lingual inner incline, non-supporting cusp
Selective Grinding
Stage III: Where to Grind:
Adjust ____ of cusps only
inner inclines
IMPRESSION materials play a vital part in the success of everyday dental procedures
The ideal impression material should be easy to handle and mix
It should have either a ____ or ____ consistency when placed in the mouth
It should be ____, due to the moist environment of the mouth
fluid
plastic
hydrophilic
Ideal impression materials should also:
Have a degree of ____ when set
Will help the impression record small undercuts without distortion
The set material should be ____
Not undergo any dimensional changes during
reasonable periods of storage
Time between procedure and pouring of the model
elasticity
stable
Impression
Ideal impression materials should also:
Be ____
Taste ____
Both look and smell reasonably nice
Should be compatible with appropriate ____ solutions.
non-toxic
pleasant
disinfecting
Impression
Distortions in the impression can occur when materials with high ____ are used
For this reason, ____ trays are recommended
flexibility
rigid
Impression Material
Hydrocolloids:
“____: A mixture in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance”
“____”: Solid powder particles of a diameter of few hundred are suspended in a liquid.
colloid
hydrocolloid
Impression Material
Hydrocolloids:
A ____ process
Involves the transition of a system from a liquid
(the colloidal ____) into a solid (the ____) phase.
sol-gel
sol
gel
Impression Material
Hydrocolloids:
Can be converted to a completely solid “gel” by a chemical reaction
= ____ hydrocolloid
Can be converted to a completely solid “gel” by a reduction in temperature (cooling) and back to a liquid “sol” by increase in temperature (heating)
= ____ hydrocolloid
Both these kinds of hydrocolloids are used as impression materials in restorative dentistr
irreversible
reversible
Impression Material
Irreversible Hydrocolloids:
Alginate (ours: “Cavex” brand)
Is excellent for ____ – “diagnostic models
Used for many procedures
This material is not accurate enough to be used for a ____ in most cases
study models
definitive (final) impression
