Pack
Standard pack
Standard pack$30.36
Bulk pack$228.36
Bego Wax Hole Retentions is a specialized dental laboratory wax. It functions as a retention component, specifically designed for establishing mechanical retention areas during the wax-up phase of partial denture framework construction.
As a Bego Pattern & Casting Wax, this product is identified by manufacturer part number 40620. It is intended for dental laboratory professionals requiring precise retention elements for partial denture fabrication.
Product
- Manufacturer
- Bego
- Manufacturer #
- 40620
- Item code
- 011-0949
Catalog path
- Marketplace
- Laboratory
- Category
- Wax
- Subcategory
- Pattern & Casting Wax
Ordering
- Status
- In stock
More from Pattern & Casting Wax
Stocked in the same subcategory.
Questions
What is Bego Wax Hole Retentions used for?
Bego Wax Hole Retentions is a specialized dental laboratory wax.
Which pack options are on this page?
This page carries 2 pack options: Standard pack, Bulk pack. Pick one to see its price, part number and stock.
When does it ship?
In-stock orders placed before 3 PM ET ship the same day; anything not on our shelf ships within 3 business days.Ground shipping is free over $10.
About preformed wax patterns
The wax under this name on the shelf is preformed: clasps, bars, grids, retentions, profiles, pontics and sheets of casting wax, smooth or stippled. A pattern is a form that is used to make a mold.
Casting wax is a composition of various waxes with the properties needed for making wax patterns that will be formed into metal castings. A wax pattern is a wax form that is the positive likeness of the object to be made. In the lost-wax technique the pattern is surrounded with a refractory slurry that sets, and is then removed by heat, leaving the mold into which metal or ceramic is cast.
The FDA lists intraoral dental wax, used to construct the patterns from which metal prostheses are cast, as a Class I device (21 CFR 872.6890). ISO 15854 is the standard for waxes used for dental casting by the lost-wax technique, including products intended for CAD/CAM milling.
How the waxes on this shelf differ
- Pattern Wire Wax — Ready-made wax shapes that are placed on the cast in place of free-hand waxing.
- Sprue Wire Wax — Wax wire that forms the channel for the molten metal.
- Modeling Wax — The wax that is added and shaped to build the pattern.
- Cervical Wax — Used at the neck of the pattern, at or near the cemento-enamel junction.
What to look at when choosing a pattern wax
Flow: under ANSI/ADA specification No. 4 a Type 1 wax may flow at most 1 percent at 37 °C, and Type 1 and Type 2 waxes must flow between 70 and 90 percent at 45 °C.
Thermal expansion: a rise of 20 °C expands inlay wax by 0.7 percent in length.
Distortion: a wax pattern can hold internal strains from the way it was worked, and it distorts when the strain relaxes. Time and temperature both make it worse, which is why patterns are generally invested immediately after they leave the die or cast.
Resin patterns: in one study resin pattern materials changed significantly less in dimension than inlay casting wax when stored for 1, 12 and 24 hours.
Sources: The Glossary of Prosthodontic Terms, 9th edition (J Prosthet Dent 2017) · FDA 21 CFR 872.6890, Intraoral dental wax · ISO 15854:2023, Casting and baseplate waxes · Distortion in Wax Patterns Fabricated Using Conventional and Electrical Heat Sources, 2023 (Cureus, PMC10388666) · Gopalan et al. 2018, Marginal adaptation of a thermoplastic resin, a light cured wax and an inlay casting wax (PMC5799966)
