Prosthodontics

• Buccinator

  • Maintains cheek tension; affects buccal flange extension.

• Orbicularis Oris

  • Shapes lip seal; critical for labial flange contour.

• Palatoglossus

  • Influenced by tongue movement; affects posterior palatal seal.

• Tongue Muscles (Intrinsic & Extrinsic)

  • Vital for speech, swallowing, and denture retention.

 Clinical Applications

• Border Molding

  • Muscle movements guide impression techniques for accurate denture borders.

• Denture Stability

  • Muscle tone and coordination affect retention and comfort.

• Phonetics

  • Muscles of speech (e.g., orbicularis oris, tongue) help determine tooth placement during try-in.