Plastics and Seperators
When heat-curing acrylic resin in a denture mold, this is by far the most universally utilized medium to immerse and process the flask.
What is hot water (or a hot water bath)?
Glass is structurally weaker than casting metals with crystalline structures because its atoms are arranged in this specific manner.
What is an irregular pattern?
Supplied in grades like flour, coarse, medium, and fine, this silica-based volcanic powder is mixed with water to smooth acrylic resin and metal prostheses.
What is pumice?
This specific numerical gauge corresponds to a sheet-casting wax thickness of exactly 0.25 mm.
What is 30 gauge?
Under the official ADA classification system, an alloy containing less than 60% noble metal but greater than or equal to 25% noble metal is designated as this.
What is Medium Noble?
To prevent ruined, porous acrylic, a technician must bring a packed denture flask up to its curing temperature slowly, especially if the denture base has these zones.
What are thick sections?
This chemical element stands as the principle glass-forming oxide network element across all varieties of dental porcelains.
What is oxygen (bonding with silicon to form silica)?
This fine, paper-backed disc abrasive is mounted on a mandrel and gripped by a handpiece to finish delicate gold margins.
What is cuttlefish?
Inlay waxes are divided into three types: Type A is a hard low-flow wax, Type B is for intraoral use, and this type is engineered specifically for indirect laboratory use.
What is Type C?
This silver-colored element is commonly added to gold alloy solders to safely lower the melting range and act as a deoxidizing scavenger.
What is zinc?
To preserve the chemical separation film, technicians must pack acrylic resin into a mold within this timeframe after applying an alginate separator.
What is one hour?
To increase a porcelain's thermal expansion up to the high level of a bonding metal alloy, manufacturers purposefully increase the content of this specific flux.
What is soda (sodium oxide)?
Sold in a solid stick or cake form with a chemical binder, this relatively fine compound is applied via a rapidly spinning rag wheel to smooth metals.
What is tripoli?
Preformed wire wax supplied in round forms is uniquely dual-purposed for partial denture frameworks and doing this step for fixed prosthetic units.
What is spruing?
Added to base metals to lower the melting range and improve castability, this specific element also functions heavily as an alloy hardener.
What is titanium?
If a technician allows traces of tin-foil substitute to remain on the necks of plastic denture teeth, it will completely prevent this vital process.
What is bonding of the teeth to the denture base resin?
Mixed with low-fusing, air-fired porcelain to bond directly to a crown, this intense color concentrate is used strictly for extrinsic external coloration.
What is a stain?
This rough abrasive is mounted as an arbor band on a dental lathe to trim down thick acrylic denture bases and custom trays.
What is emery?
To ensure an even distribution of constituents and predictable working properties, casting investment powders should always undergo this action before use.
What is tumbling?
According to the ADA classification system, the family of noble dental metals includes gold and this many members of the platinum-palladium group.
What is six members? (Ruthenium, Rhodium, Palladium, Osmium, Iridium, and Platinum).
Manufacturers supply acrylic denture base resins in two primary raw formats: the common powder/liquid form, and this premixed format.
What is a premixed gel?
This interior layer of porcelain is carefully formulated to accurately match the appearance of the gingival two-thirds of a natural tooth.
What is dentin (or body) porcelain?
Used in porcelain jacket fabrication, this micro-thin material is ideal because its high melting point of 3224 °F and low thermal expansion prevent it from distorting in the furnace
What is platinum foil?
At standard room temperature, high-quality sheet-casting wax must possess these two distinct handling traits to adhere properly to a cast model.
What are toughness and pliability?
: Wrought gold wires usually present a distinct silver color rather than gold due to containing exceptionally high percentages of these two noble metals.
What are platinum and palladium?