Midterms Flashcards
What is an alloy?
A solid mixture of 2 or more metals
Alloys can be used in various applications, including dental materials like amalgam.
Define amalgam.
An alloy of mercury and 1 or more other metals
Amalgams are commonly used in dental applications.
What is dental amalgam?
A combination of mercury with a specially prepared silver alloy
Dental amalgam is a widely used restorative material in dentistry.
Who introduced the first amalgam paste and when?
Dr. Taveau in 1826
This paste was known as ‘Silver-Hg Paste’.
Which dentists introduced the first amalgam paste in the U.S.?
Crawcour Brothers in 1833
Their amalgam was referred to as ‘Royal Succedaneum’.
What event is referred to as the ‘Amalgam war’?
The controversy surrounding the use of amalgam, particularly led by A.S.D.S.
This war involved debates between proponents and opponents of amalgam use.
Who was against the use of amalgam?
Chapin Harris
Harris was a notable figure in the opposition to amalgam.
Which two individuals advocated for the use of amalgam?
Black and Foster Flagg
They played a significant role in promoting amalgam as a dental material.
What significant publication did Dr. G.V. Black release in 1896?
A basic formula for amalgam
This publication contributed to the standardization of amalgam use in dentistry.
What year did the ADA begin an intensive research program on amalgam alloy?
1919
This research aimed to improve the understanding and application of dental amalgam.
When was the ADA specification #1 for dental amalgam adopted?
1929
This specification set standards for the composition and use of dental amalgam.
List the indications for using dental amalgam.
- Moderate to large class preparation
- Class II preparations with heavy occlusion, extension on the root surface, or isolation problems
- Class V preparations where esthetics is not a concern
- Class I preparations
- Foundation for grossly decayed teeth planning for cast restoration
- Post-endodontic restoration
- Interim restoration for teeth with uncertain pulpal prognosis
- Restoration of fractured cusp using pin and slot
These indications highlight the versatility of amalgam in various clinical situations.
What are contraindications for using dental amalgam?
- Salto moderate class I and class II preparations should be restored with composite
- History of allergy to mercury or other amalgam components
These contraindications emphasize the need for careful patient assessment before using amalgam.
What does the term ‘flow and creep’ refer to in dental amalgam?
Characteristics that deal with an amalgam undergoing deformation when stressed
Lower creep values indicate better marginal integrity of the restoration.
