Cast Metal Bar

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The cast metal bar is typically made by a process of casting a metal alloy into a specific shape. This bar is often used in cases such as partial dentures or in some complex restorative cases.

The cast metal bar provides strength and rigidity to the prosthesis, helping to support and stabilize the artificial teeth or other components attached to it. The metal alloy chosen for the cast bar is selected based on its mechanical properties and biocompatibility.

The fabrication of a cast metal bar requires precise techniques and often involves working with a dental laboratory to ensure an accurate fit and proper function within the patient’s oral cavity.

Restoration Details

Indications

1. Bilateral / unilateral distal extension removable partial dentures

2. Long edentulous spans needing high rigidity

3. Patients with heavy occlusion or bruxism

4. Cross‑arch stabilization and indirect retention

5. Splinting of remaining abutment teeth

6. Good biocompatibility for patients allergic to other metals

Material Composition

Cast metal bar is a cobalt-based ally (most often Co-Cr-Mo)with a standard composition by weight% as following: Co 61%, Cr 27%, Mo 6%,W 5%

Preparation Tips

1. Bilateral / unilateral distal extension removable partial dentures

2. Long edentulous spans needing high rigidity

3. Patients with heavy occlusion or bruxism

4. Cross‑arch stabilization and indirect retention

5. Splinting of remaining abutment teeth

6. Good biocompatibility for patients allergic to other metals

Strength Characteristics (MPa)

1. Tensile Strength (UTS): ≥ 650 MPa

2. Yield Strength (0.2% offset): ≥ 450 MPa

3. Elongation: ~8% (low ductility, rigid)