Which maxillary major connector may not be accepted due to multiple borders?

Which maxillary major connector may not be accepted due to multiple borders?

• A. Antero-posterior palatal strap
• B. Anterior palatal strap
• C. Complete palatal plate
• D. Lingual bar

Answer: (A)

The key idea is that a maxillary major connector should present a single, continuous border along the palate. Antero-posterior palatal strap is built as two separate straps—one across the anterior palate and one across the posterior palate—joined together, which creates more than one distinct border on the same connector. That multi-border geometry is undesirable because it can trap food, irritate tissue, and complicate fabrication and hygiene. Because of this, this design may not be accepted as a major connector. In contrast, an anterior palatal strap or a complete palatal plate provides a single, continuous border, which aligns with the desired design principle. A lingual bar is a mandibular connector, not a maxillary one, so it isn’t applicable as a maxillary major connector.

The key idea is that a maxillary major connector should present a single, continuous border along the palate. Antero-posterior palatal strap is built as two separate straps—one across the anterior palate and one across the posterior palate—joined together, which creates more than one distinct border on the same connector. That multi-border geometry is undesirable because it can trap food, irritate tissue, and complicate fabrication and hygiene. Because of this, this design may not be accepted as a major connector.

In contrast, an anterior palatal strap or a complete palatal plate provides a single, continuous border, which aligns with the desired design principle. A lingual bar is a mandibular connector, not a maxillary one, so it isn’t applicable as a maxillary major connector.