Intro to Composite/Occlusion (complete) Flashcards
What does Composite mean?
Composite means composed of various parts or elements
What makes up composite?
Composite it composed of liquid resin that is filled with tiny particles of silicate or glass
What is composite specifically designed to do?
Composite is specifically designed to remain soft and workable until it is exposed to a specific wavelength of light.
Can composite set without the specific wavelength of light
Yes, composite can set if exposed to room lighting or a headlamp that is unfiltered for too long.
How long does it typically take composite to cure with the light on it
10 - 20 Seconds
What can cause differences in the amount of time it takes Composite to cure
Color of the Composite
Thickness of the Composite
When placing composite should we make sure to add quite a bit more than we need because after it is cured we can easily remove the excess and shape it?
No
What are the steps of placing composite?
- Bond the tooth
- Use wetting resin on our instruments
- Place the composite
- Shape, mold, and form the composite
- Cure the composite
- Finish the composite
- Check Occlusion
- Polish the composite
What is the purpose of Bonding Resin
To create a bond between the tooth and the composite that we are placing
What is the purpose of the wetting resin
to prevent the composite from sticking to our instruments
When curing composite, the rule of thumb is that our composite shouldn’t be more that _____ thick
2mm
Why can our composite only be 2mm thick if we want to ensure a proper curing
because the light is only able to penetrate the composite up to 2mm
Do we need to use a bonding resin to cured composite if we want to add more composite to it?
No we do not
What about composite allows us to add uncured composite to cured composite
air inhibits composite from completely curing, so even after it is cured the very outermost layer of the composite is referred to as being air-inhibited so that it hasn’t completely cured, and the uncured composite that we add will adhere to the already cured composite
Does it cause a problem that the air-inhibited layer of composite is left there even after we cure it?
no because that uncured layer will be removed with the finishing and polishing steps
What is the finishing step of composite placement
Using carbide burs and a handpiece to shape and smooth the surface of cured composite
What specific things do we do during the finishing step of composite placement
- Refine the anatomy
- Shape cusps, incisal edges, angles, and ridges
- Define grooves, depressions, pits, and embrasures
- create a smooth and regular surface
- create proper contacts with opposing arch, or occlusion
What is the best way to make the finishing step as easy as possible
making sure the composite was well placed before you cure it
What is a functional cusp
A cusp that makes contact with the opposing tooth
What is a non-functional cusp
A cusp that doesn’t make contact with the opposing tooth
On the posterior teeth of the Maxillary arch, which cusps are functional and which are non-functional
Lingual cusps are functional
Buccal cusps are non-functional
on the posterior teeth of the Mandibular arch, which cusps are functional and which are non-functional?
Buccal cusps are functional
Lingual cusps are non-functional
What does the term overbite refer to
The vertical measurement of how much of the mandibular incisors are covered up by the maxillary incisors
What does the term overjet refer to
the horizontal measurement of how far away the maxillary incisors are from the mandibular incisors
In a normal occlusion where is the mandibular arch situated on the maxiallry arch
The mandibular arch is situated inside of the maxillary arch
Where do the mandibular anterior teeth contact the maxillary anterior teeth
They contact the mesial marginal ridges of their counter parts, and the distal marginal ridges of the maxillary tooth that is mesial
Where do the maxillary posterior teeth contact their mandibular counterparts
in the central groove and the distal marginal ridge
Where do the mandibular posterior teeth contact their maxillary counterpart
in the central groove and on the mesial marginal ridge
How do we know when the finishing step is complete?
When we have developed the anatomy just how we would like and when we have obtained a smooth and regular surface
What step follows the finishing step
polishing
What is the way to best learn about the surface texture of the composite that you have placed and finished?
by looking at the way that light reflects off of the tooth as opposed to looking directly at the tooth itself
What is the color order in which we use the polishing points
- Green (rough)
- Yellow (medium)
- White (fine)
What is the order in which we use the polishing points according to grit
- Lower grit to higher grit
or
- Higher grit to lower grit
Lower grit to higher grit
What is the goal with each of the polishing points
to create an eve, uniform texture on the restorative surface
What are the 5 pre-clinical objectives
- Oral disease Detection, diagnosis, and prevention
- Treatment of dental diseases and abnormalities
- Customized treatment of dental diseases and abnormalities
- Health care delivery and practice management
- personal development and professionalism
What is the primary pre-clinical objective
to become diagnosticians
What is the key to developing excellent hand skills
practice with meaningful feedback from
- ourselves
- our peers
- the faculty
