Cast soldered and porcelain are three types of.. fixed connector

Cast soldered and porcelain are three types of:

• A. fixed connector.
• B. movable.
• C. partial.
• D. both A and B.

The answer is: A. fixed connector

Cast, soldered, and porcelain are all types of fixed connectors used in dentistry to join dental prostheses to remaining teeth or implants. They are not movable or partial prostheses themselves.

Here's a breakdown of each type:

- Cast connectors:

These are made by casting molten metal into a mold created from an impression of the prepared teeth. They are strong and durable, making them a good choice for bridges and other fixed prostheses.

- Soldered connectors:

These are made by joining two pieces of metal using a solder, which is a metal alloy with a lower melting point than the parent metals. They are less strong than cast connectors but can be easier to fabricate.

- Porcelain connectors:

These are made from porcelain, which is a ceramic material. They are less common than metal connectors but can be used for aesthetic reasons, as they can be made to match the color of natural teeth.