Used for packing the amalgam into cavity. They are used to deliver and condense the restoration to the tooth preparation. The hammer like working end of condenser should be large enough to pack restoration.
What is a condenser used for in dental?
A condenser, also known as a plugger, is a dental instrument with flat working ends designed to pack restorative material into cavity preparations. Composite pluggers are often Teflon coated to prevent sticking and discoloration of restorative material.
What is a amalgam carrier used for?
Amalgam carriers are instruments used to fill dental cavities with amalgam. These act like syringes, carrying in their tubular tip the amalgam that is inserted and pressed in the dental cavity by pressing on a lever, which activates the piston inside the tube or the back end of the amalgam carrier.
Why amalgam condenser is serrated?
Serrated ends of the Parallelogram Condenser is said to increase the surface area. It provides an mechanical interlock between the condensed amalgam to the freshly induced amalgam. Provides better adaptation of amalgam to the cavity & prevents slimage of amalgam.
What is an amalgam condenser? – Related Questions
What instrument is used for amalgam?
Condenser (Plugger)—Smooth and Serrated
Smooth and Serrated Condensers are used on amalgam, composite, and temporary filling tray setups.
What is another name for amalgam condenser?
Instrument used to impress unset amalgam into a cavity preparation of a tooth. Synonym(s): amalgam plugger.
What is serrated dentistry?
Denticles, also called serrations, are small bumps on a tooth that serve to give the tooth a serrated edge.
The term is also used to describe the analogous radular teeth of mollusks.
Dromaeosauridae tooth with small denticles along the cutting edge.
Ankylosaurus tooth with large denticles.
What instrument is used to smooth amalgam after condensing?
Burnisher – used to smooth the surface of a freshly placed amalgam restoration. Condensers – used to pack down freshly placed amalgam into the preparation.
How do you smooth amalgam?
Why is a wooden wedges used in an amalgam restoration?
Use of a wedge with the matrix band serves two purposes: Helps to compress the matrix band against the tooth structure to create a tighter seal, preventing gingival overhang.
Why do we polish amalgam after 24 hours?
Polishing after 24 hours produced a significantly smoother surface for both amalgam alloys on both the simulated proximal and occlusal surfaces. 2. The standard polishing procedures after 24 hours produced a smoother surface than any of the immediate finishing procedures tested.
What is the strongest phase in amalgam restoration?
The first phase, called the gamma phase (γ), is the silver alloy phase. It is the strongest phase and has the least corrosion.
Why do we burnish amalgam restorations?
If the amalgam is burnished at the stage of initial contraction, the space caused by contraction is filled by amalgam flow, and the subsequent expansion further improves the adaptation. Burnishing is thus considered to be a method of improving the seal.
What is the difference between burnish and polish?
In general, both burnishing and polishing result in a smooth shine. However, while the two are often used interchangeably, burnishing often refers to a mechanical process, using a mechanical burnisher.Polishing is a more general term and can refer to polishing by hand or by machine.
Why is Cavosurface margin 90 degrees for amalgam?
All cavosurface margins should be smooth, flowing curves and be free of unsupported enamel. Cavity walls should meet the external surface of the tooth at 90° angles to provide optimum support for the tooth and sufficient bulk of amalgam to resist fracture along the margin.
What is creep in amalgam restoration?
The pro- gressive deformation of a material at constant stress is called creep. In testing of dental amalgam, creep refers to the deformation of an amalgam under a compressive stress of 36 MPa of a 7 d old specimen (ISO, International Or- ganization for Standardization’s proposal for International Standard 1559).
What are the 3 stages of creep?
Primary Creep: starts at a rapid rate and slows with time. Secondary Creep: has a relatively uniform rate. Tertiary Creep: has an accelerated creep rate and terminates when the material breaks or ruptures.
What are three types of creep tests?
The creep test is divided into three stages—primary creep, secondary creep and tertiary creep. The creep curves provide information about the creep behavior over a specified period of time.
What is eta phase in amalgam restoration?
Objectives: The eta’ Cu-Sn phase is the most corrosion-susceptible major component of the microstructure in high-copper dental amalgams, even though metallurgically prepared specimens of the phase are corrosion-resistant. The purpose of this study was to determine if mercury is the cause of the degradation.
What is gamma 2 phase in amalgam?
Formation of the gamma-2 phase (γ-2) is a disadvantage of amalgam used in the past (= conventional amalgam). The γ-2 phase results from the hardening/setting reaction of mercury with the metal powder and consists of a mixture of tin and mercury (Sn8Hg).