In a mandibular RPD, the typical major connector is a:

In a mandibular RPD, the typical major connector is a:

• A. Palatal plate
• B. Lingual Bar
• C. Buccal Plate
• D. Distal Extension

Answer: (B)

In a mandibular RPD, the major connector should be rigid while leaving ample space for tongue movement and oral hygiene. The lingual bar achieves this best when there is enough vertical space between the floor of the mouth and the gingival margin. It runs along the lingual aspect of the mandible, providing a strong, minimally bulky connection that doesn’t encroach on tongue function or the floor of the mouth. If there isn’t enough space, a lingual plate becomes a more suitable alternative, but it’s bulkier and covers more of the lingual surface. The other options aren’t typical major connectors for the mandible: a palatal plate is used on the maxillary arch, not the mandible; a buccal plate sits on the cheek side and can impede soft-tissue movement; a distal extension refers to the edentulous area behind the last tooth and is not a major connector.

In a mandibular RPD, the major connector should be rigid while leaving ample space for tongue movement and oral hygiene. The lingual bar achieves this best when there is enough vertical space between the floor of the mouth and the gingival margin. It runs along the lingual aspect of the mandible, providing a strong, minimally bulky connection that doesn’t encroach on tongue function or the floor of the mouth. If there isn’t enough space, a lingual plate becomes a more suitable alternative, but it’s bulkier and covers more of the lingual surface.

The other options aren’t typical major connectors for the mandible: a palatal plate is used on the maxillary arch, not the mandible; a buccal plate sits on the cheek side and can impede soft-tissue movement; a distal extension refers to the edentulous area behind the last tooth and is not a major connector.