Size
Large
The Keystone Extra Large Lingual Bars is a dental product supplied by Keystone for dental use. Catalog code 1110010.
Keystone Lingual Bars is a lingual bar from Keystone Industries.
This page carries 4 size options: Small, Medium, Large, X-Large.
Find it on our Dentures & Acrylics shelf, under Partial Denture Framework.
Orders placed before 3 PM ET ship the same day when the item is on our shelf (otherwise within 3 business days), and ground shipping is free over $10.
Product
- Manufacturer
- Keystone Industries
- Manufacturer #
- 1110020
- Item code
- 010-0693
Catalog path
- Marketplace
- Laboratory
- Category
- Dentures & Acrylics
- Subcategory
- Partial Denture Framework
Ordering
- Status
- Ships in 3 business days
More from Partial Denture Framework
Stocked in the same subcategory.
Questions
What is Keystone Lingual Bars used for?
The Keystone Extra Large Lingual Bars is a dental product supplied by Keystone for dental use.
Which size options are on this page?
This page carries 4 size options: Small, Medium, Large, X-Large. 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 lingual bars
A lingual bar is a major connector of a lower removable partial denture, placed on the tongue side of the dental arch. A major connector joins the components on one side of the arch to those on the other.
A framework is the skeletal portion of a prosthesis, usually metal, around which and to which the remaining portions are attached. Cobalt-chromium alloy remains the most common material for removable partial denture frameworks.
The FDA lists the preformed clasp as a Class I device (21 CFR 872.3285).
How clasps, lingual bars, mesh and strengtheners differ
- Clasps — The part that grips the tooth; when overloaded, cast clasps tend to break and the more flexible wrought ones to deform.
- Strengtheners — Preformed grids, braids and plates that reinforce the acrylic base.
- Mesh — Sheet mesh embedded in the acrylic base as reinforcement.
- Lingual Bars — The bar that joins the two sides of a lower partial denture.
What to look at when choosing
Clasp material: in one study cast clasps gave the highest retentive forces, and round wrought wire of 1 mm diameter the next highest. Nickel-free wrought wire was more flexible than stainless steel and exerted less retentive force.
Metal or wax: some clasps, bars and retentions on this shelf are wax shapes. Dental wax is used to build the patterns from which custom metal prostheses are cast.
Framework metal: a study attributes the place of cobalt-chromium to its high elastic limit, resistance to wear and corrosion, and biocompatibility.
Sources: The Glossary of Prosthodontic Terms, 9th edition (J Prosthet Dent 2017) · Zakaria Hashem Mostafa et al. 2025, Removable partial denture with lingual bar major connector in cobalt chromium, PEEK and PEKK (PMC12857090) · FDA 21 CFR 872.3285, Preformed clasp · Owen & Naidoo 2022, Guidelines for the choice of circumferential wrought wire and cast clasp arms for removable partial dentures (Int Dent J) · Kumar et al. 2017, Effect of Reinforced Autopolymerizing Resin on the Flexural Strength of Repaired Heat-polymerized Denture Base Resin (PMC5682712) · Bollepalli et al. 2025, Conventional and polypropylene mesh reinforced poly methyl methacrylate denture base resin (PMC12370094) · FDA 21 CFR 872.6890, Intraoral dental wax
