Intro to Dental Materials
Who was credited for discovering dental fluorosis in Colorado Springs?
Dr. Frederick McKay
Who developed the first acceptable amalgam formula in 1895?
G.V. Black
This term refers to the intensity or strength of the color
Chroma
This is the reason the cavity preparation is slightly overfilled during the placement and condensation of amalgam.
It removes the excess mercury and it also allows enough material to carve to contours.
The reason the wet resin technique is used under an amalgam restoration.
To bond the amalgam to the tooth
This is the place of the earliest historical mention where fluoride was first used.
England
The phenomenon associated with the gamma-2 phase in low-copper amalgam alloys that is a slow, permanent deformation of the filling material caused by constant chewing forces (compressive stress)?
Creep
Dual set materials utilize these setting reactions
Both light-activated and chemical
This agency/symbol helps consumers (not professionals) make informed decisions about the safety and efficiency of products.
American Dental Association (ADA) Seal
The definition of a direct-placement esthetic material.
What is a tooth-colored material that is placed directly into the oral cavity and is designed to achieve a natural and aesthetically pleasing appearance. .
This material will flow more easily under mechanical pressure
thixotropic
This metal is used to control the rate of set of the amalgam and makes it more durable.
Copper
This material in a composite resin is the material responsible for adhering particles to the resin matrix.
Silane coupling agent
This agency regulates over-the-counter products sold to the public.
Food and Drug Administration (FDA)
An example of an indirect placement restorative material.
What is porcelain, a crown, inlay, onlay, etc.
The 3 classifications of dental materials
Preventative, restorative, therapeutic
This modern alloys uses the least amount of mercury to wet the particles.
Spherical
This is the term for the time permitted to manipulate the composite material in the patient's mouth
Working time
The percentage of mercury contamination from waste water entering the public water system contributed by dental offices before the adoption of safety measures.
50%
The characteristics that make gold a good choice for use as a cast restoration
Ductility and malleability
In history, this is the earliest recorded mention of restorative dentistry occuring.
600 B.C.
The length of time it takes for most amalgam restorations to FULLY set.
Up to 24 hours
This type of bonding to produce retention requires less removal of tooth structure and produces a stronger retentive force between the tooth and the restoration.
What is chemical bonding
The function of an appliance for treating OSA
Lifts the soft palate, repositions the mandible, and postures the tongue forward
This restorative techniques was first introduced in 1955.
Acid-etch technique