Maxilla Quiz ODS (learning outcomes)

Maxilla: Key Features and Articulations

• Facial View:

  • Frontal process: Projects upward to connect with the frontal bone.
  • Infra-orbital foramen: Opening for a nerve.
  • Zygomatic process: Connects with the zygomatic bone, contributing to the zygomatic arch.
  • Anterior nasal spine: A bony projection at the anterior/medial aspect.
  • Canine eminence: A rounded projection where the canine tooth sits in the alveolar region.

• Lateral View:

  • Frontal process: Again, connecting with frontal bone.
  • Infra-orbital foramen: Visible aspect.
  • Anterior nasal spine: Significant part for bone landmarks.
  • Orbital surface: Forms part of the eye socket's floor.
  • Zygomatic process: Connecting with zygomatic bone.
  • Maxillary bone: The main component itself.

• Palatal (Inferior) View:

  • Incisive foramen (fossa): Openings for nerves.
  • Palatine process: Horizontal extension forming the roof of the mouth/floor of the nose.

• Medial View:

  • Frontal process: Part of the maxilla.
  • Maxillary sinus: A cavity in the maxilla.
  • Palatine process: Again, important structure relating to the roof of the oral cavity.
  • Alveolar process: Supporting structure for teeth.

Maxilla Parts

• Body: The main, central portion of the maxilla.
• Processes:
  • Frontal: Connects with frontal bone.
  • Zygomatic: Connects with zygomatic bone.
  • Palatine: Forms the hard palate.
  • Alveolar: Supports the teeth.

Maxilla Articulations

• External:

  • Nasal bone
  • Frontal bone
  • Zygomatic bone
  • Vomer
  • Palatine bone

• Internal:

  • Lacrimal bone
  • Ethmoid bone
  • Inferior concha

• Teeth articulation: Maxillary teeth articulate with mandibular teeth via the temporomandibular joint.

Maxilla Processes and Surfaces

• Alveolar process: Supports and houses teeth sockets in the upper jaw.

• Zygomatic process: Part of the zygomatic arch, relating to cheekbone structure.

• Frontal process: Connects to upper portion of the face.

• Palatine process: Forms the hard palate.

• Surfaces:

  • Facial (anterior): Supports upper facial features.
  • Nasal (medial): Contributes to the nasal cavity's structure.
  • Orbital: Forms part of the eye socket's floor.
  • Infratemporal: Part of the lower temporal region.

Cleft Lip and Palate

• Cleft Palate: Occurs when the two halves of the palate don't fuse completely, resulting in an opening in the palate (roof of the mouth).

• Cleft Lip: A split in the upper lip, where tissues haven't joined properly.

• Implications:

  • Feeding difficulties (infants): Malformation leads to challenges during feeding.
  • Hearing problems,
  • Speech impairments: Due to the cleft affecting the proper formation of the palate and its surrounding articulations.
  • Dental development problems:

• Hypodontia: Missing teeth.

• Supernumerary teeth: Extra teeth.

• Malformation: Irregular teeth or jaw development.

• Delayed development: Delayed eruption and formation of teeth.

• Increased susceptibility to decay: Cleft position might expose teeth more to oral environment issues.