Maxilla Anatomy and Articulations

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is the primary role of the alveolar process of the maxilla?

  • Forms the lateral wall of the nasal cavity
  • Articulates with the zygomatic bone
  • Forms the sockets and supporting bone for the maxillary teeth (correct)
  • Forms the orbital floor

Which of the following bones does NOT articulate directly with the maxilla?

  • Nasal bone
  • Mandible (correct)
  • Frontal bone
  • Zygomatic bone

The palatine process of the maxilla contributes to the formation of which structures?

  • Anterior nasal spine and infratemporal fossa
  • Zygomatic arch and alveolar sockets
  • Floor of the orbit and lateral nasal wall
  • Roof of the oral cavity and floor of the nasal cavity (correct)

A patient presents with sinusitis primarily affecting the maxillary sinus. Given its anatomical relationships, inflammation of this sinus might directly affect which of the following?

<p>The roots of the maxillary molars (D)</p> Signup and view all the answers

What is the primary function of the orbital surface of the maxilla?

<p>Forms the floor of the orbit (D)</p> Signup and view all the answers

Which process of the maxilla projects upwards to articulate with the frontal bone?

<p>Frontal process (D)</p> Signup and view all the answers

A cleft palate results from the incomplete fusion of which structures during development?

<p>Two halves of the palate (A)</p> Signup and view all the answers

Where is the zygomatic process of the maxilla located?

<p>Lateral aspect of the maxilla (D)</p> Signup and view all the answers

What is the main function related to the infratemporal surface of the maxilla?

<p>Formation of the infratemporal wall (A)</p> Signup and view all the answers

Which of the following accurately describes the incidence of cleft lip and palate in the UK?

<p>1 in 700 births (D)</p> Signup and view all the answers

Besides forming part of the upper face, what other significant region does the maxilla contribute to?

<p>The orbit (B)</p> Signup and view all the answers

A patient has a fracture involving the anterior nasal spine. Which functional impairment might you expect?

<p>Altered upper lip support (A)</p> Signup and view all the answers

What is a common characteristic of the maxillary sinus?

<p>A large air space (C)</p> Signup and view all the answers

In which direction does the frontal process of the maxilla project?

<p>Upward (B)</p> Signup and view all the answers

How does the maxilla contribute to the nasal cavity?

<p>By forming the lateral wall (D)</p> Signup and view all the answers

What surgical outcome is typically expected for a cleft lip?

<p>Excellent aesthetic and functional results (B)</p> Signup and view all the answers

Which of the following features is located on the lateral surface of the maxilla?

<p>Infraorbital foramen (D)</p> Signup and view all the answers

What is the clinical significance of understanding the relationship between the maxillary sinus and the maxillary molars?

<p>Planning sinus lifts for dental implants (A)</p> Signup and view all the answers

In a facial fracture involving the zygomatic process of the maxilla, which bone's articulation could be directly affected?

<p>Zygomatic bone (B)</p> Signup and view all the answers

What is a common early intervention for a child born with a cleft lip?

<p>Surgical revision (A)</p> Signup and view all the answers

Which of the following is NOT a process of the maxilla?

<p>Infratemporal process (B)</p> Signup and view all the answers

Which bones articulate with the frontal process of the maxilla?

<p>Frontal bone, nasal bone &amp; lacrimal bone (D)</p> Signup and view all the answers

Which structures does the palatine process of the maxilla form?

<p>Roof of oral cavity and floor of the nasal cavity (A)</p> Signup and view all the answers

Which of the following gives buttressing contribution to the zygomatic arch?

<p>Zygomatic process (D)</p> Signup and view all the answers

Which of the following is a function of the maxilla?

<p>Helps form the infratemporal region, orbital floor, lateral wall of nasal cavity, and roof of oral cavity (B)</p> Signup and view all the answers

With what does the maxillary teeth articulate?

<p>The teeth of the mandible through the temporomandibular joint (D)</p> Signup and view all the answers

Which bones articulate internally to the maxilla?

<p>Lacrimal bone, ethmoid bone, and inferior concha (D)</p> Signup and view all the answers

Which of the following contains the incisive foramen?

<p>Palatal (inferior) view (D)</p> Signup and view all the answers

Which of the following features can be seen from the medial view of the maxillary bones?

<p>All of the above (E)</p> Signup and view all the answers

Which process of the maxillary bone helps form the upper dental arch?

<p>The alveolar process (C)</p> Signup and view all the answers

Select the correct location the anterior nasal spine.

<p>Inferior border of the maxilla (A)</p> Signup and view all the answers

Which of the following surfaces of the maxilla helps form the upper face?

<p>Facial (anterior) surface (C)</p> Signup and view all the answers

Select the surface that helps to form the wall of the infratemporal region.

<p>Infratemporal (posterior surface) (A)</p> Signup and view all the answers

The maxillary bone is made up of how many maxillary bones joined together?

<p>2 (A)</p> Signup and view all the answers

Which of the following articulations occur 'side by side'?

<p>Opposite maxilla (C)</p> Signup and view all the answers

What percentage of babies are affected in the UK by cleft lip and palate?

<p>around 0.14% (B)</p> Signup and view all the answers

Apart from the zygoma, with which other facial bone does the zygomatic process articulate?

<p>There are no other facial bones (B)</p> Signup and view all the answers

Which bones articulate closely with, but not the frontal process or palatine process?

<p>Vomer and palatine (C)</p> Signup and view all the answers

Which abnormalities affect the maxilla?

<p>Both Cleft lip and Cleft palate (B)</p> Signup and view all the answers

If a patient has an infection that erodes through the medial wall of the maxillary sinus, which of the following spaces is MOST likely to be directly affected?

<p>The nasal cavity (B)</p> Signup and view all the answers

Why might dental professionals consider the anatomical relationship between the maxillary sinus and the alveolar process?

<p>To anticipate potential sinus complications during dental extraction. (A)</p> Signup and view all the answers

A surgeon preparing to repair a cleft palate needs to understand the anatomy of the palatine process of the maxilla. Which statement accurately describes this structure?

<p>It forms the floor of the nasal cavity. (B)</p> Signup and view all the answers

After a traumatic injury, a patient exhibits impaired movement of the upper lip and difficulty with smiling. Which structure of the maxilla is MOST likely to have been affected?

<p>The anterior surface (A)</p> Signup and view all the answers

Why might a fracture of the zygomatic process of the maxilla indirectly affect the orbital region?

<p>Because it supports the articulation of bones that contribute to the lateral orbital wall. (C)</p> Signup and view all the answers

Flashcards

What makes up the maxilla?

The maxilla (upper jaw) is composed of two maxillary bones joined together.

Maxilla's role in facial structure?

The maxilla forms a large part of the upper facial skeleton.

What does the maxilla help form?

The maxilla helps form the face, infratemporal region, orbital floor, lateral wall of nasal cavity, and roof of oral cavity.

What bones articulate with the maxilla?

The maxilla articulates with the nasal bone, opposite maxilla, frontal bone, zygomatic bone, vomer and palatine bone.

Signup and view all the flashcards

Internal articulations of the maxilla?

Internally, the maxilla articulates with the lacrimal bone, ethmoid bone, and inferior concha.

Signup and view all the flashcards

How does maxilla articulate with the mandible?

Maxillary teeth articulate with the mandibular teeth through the Temporomandibular joint.

Signup and view all the flashcards

What are the 4 processes of the Maxilla?

The maxilla features four processes: alveolar, zygomatic, frontal, and palatine.

Signup and view all the flashcards

How many surfaces does the maxilla have?

The maxilla features four surfaces.

Signup and view all the flashcards

What is the Alveolar Process?

The alveolar process of the Maxilla forms the sockets and supporting bone for the maxillary teeth and contributes to the upper dental arch.

Signup and view all the flashcards

What's the role of the Zygomatic process (ZP)?

The zygomatic process is on the lateral aspect and is the buttressing contribution to the zygomatic arch; it articulates with the zygoma.

Signup and view all the flashcards

Function of the Frontal process?

The frontal process of the Maxilla projects upward from the anterosuperior aspect to contact the frontal bone. It articulates with the frontal, nasal, and lacrimal bones.

Signup and view all the flashcards

Role of the Palatine process?

The palatine process of the Maxilla is a horizontal shelf projecting from the medial aspect toward the midline and its opposite counterpart. It forms the roof of the oral cavity and floor of the nasal cavity.

Signup and view all the flashcards

Where is the frontal process visible?

The frontal process of the Maxilla is located on the facial view.

Signup and view all the flashcards

Where is the infra-orbital foramen visible?

The infra-orbital foramen is visible on the facial view.

Signup and view all the flashcards

Where is the Zygomatic process visible?

The zygomatic process can be viewed from the facial surface.

Signup and view all the flashcards

Where is the anterior nasal spine?

The anterior nasal spine is located on the facial view.

Signup and view all the flashcards

Where is canine eminence located?

The canine eminence is located on the facial view.

Signup and view all the flashcards

Where can the frontal process be seen?

The frontal process is visible from the lateral view.

Signup and view all the flashcards

Viewing the skull, Where is the infra-orbital Foramen?

The infra-orbital Foramen can be viewed from the lateral surface.

Signup and view all the flashcards

Where do you see the anterior nasal spine?

The anterior nasal spine is visible from the lateral view.

Signup and view all the flashcards

Is the anterior nasal spine medial or lateral?

The anterior nasal spine is located on the lateral view.

Signup and view all the flashcards

Where can the palatine process be seen?

The palatine process is visible from the palatal (inferior) view.

Signup and view all the flashcards

Where is the incisive foramen?

The incisive foramen (fossa) is located on the palatal (inferior) view.

Signup and view all the flashcards

From a medial view, what structure can be seen?

The frontal process of the maxilla can be viewed from the medial view.

Signup and view all the flashcards

Where cab the Maxillary sinus be easily seen?

The Maxillary sinus of the maxilla can be viewed from the medial view.

Signup and view all the flashcards

The palatine process, viewable from where?

The palatine process is visible on the medial view.

Signup and view all the flashcards

When viewing medially, the alveolar process is always seen?

The alveolar process is visible on the medial view.

Signup and view all the flashcards

What does the orbital surface form?

The orbital surface of the maxilla forms the floor of the orbit.

Signup and view all the flashcards

What does the facial surface form?

The facial surface of the maxilla helps form the upper face.

Signup and view all the flashcards

What does the nasal surface form?

The nasal surface of the maxilla forms the bulk of the lateral wall of the nasal cavity.

Signup and view all the flashcards

Infratemporal surface

The infratemporal surface of the maxilla forms the wall of the infratemporal region.

Signup and view all the flashcards

What is a Cleft Palate?

A cleft palate is a birth defect occurring during palate development when the two halves of the palate do not fuse properly.

Signup and view all the flashcards

How common is Cleft lip?

Cleft lip or palate is the most common facial birth defect in the UK, affecting around 1 in every 700 babies.

Signup and view all the flashcards

How severe is a Cleft Lip?

A cleft lip may just affect one side of the lip or there may be two clefts; it can range from a small notch to a wide gap that reaches the nose.

Signup and view all the flashcards

What is the extent of a cleft palate?

A cleft palate may just be an opening at the back of the mouth, or it may be a split in the palate that runs all the way to the front of the mouth.

Signup and view all the flashcards

Can clefts hide?

A cleft palate can sometimes be hidden by the lining of the roof of the mouth (the mucosa).

Signup and view all the flashcards

What difficulties does Cleft palate cause?

Cleft palate can cause difficulty feeding, hearing problems, dental problems, and speech problems.

Signup and view all the flashcards

Study Notes

Overview of the Maxilla

  • The maxilla, or upper jaw, comprises two maxillary bones that join together.
  • It forms a significant portion of the upper facial skeleton.
  • It contributes to the formation of the face, infratemporal region, orbital floor, the lateral wall of nasal cavity, and the roof of the oral cavity.

GDC Learning Outcomes

  • Dental, oral, craniofacial, and general anatomy should be described
  • The application to patient management must be explained

Session Learning Outcomes

  • Describe main features of the maxilla
  • List main parts of the maxilla
  • List articulations of the maxilla
  • Processes and Surfaces of the maxilla should be described
  • Describe cleft lip and palate and its implications

Articulations of the Maxilla

  • Articulates with the opposite maxilla (side by side).
  • Nasal Bone
  • Frontal Bone
  • Zygomatic bone
  • Vomer
  • Palatine bone
  • Lacrimal bone
  • Ethmoid bone
  • Inferior concha
  • Maxillary teeth articulate with the teeth of the mandible through the temporomandibular joint.

Maxillary Processes

  • The maxilla features 4 processes, 4 surfaces, and foramina.
  • The Alveolar Process forms the sockets and supporting bone for the maxillary teeth
  • The alveolar processes of both maxillae form the upper dental arch
  • Zygomatic process (ZP) is located on the lateral aspect and is the buttressing contribution to the zygomatic arch
  • The Frontal process of Maxilla (FP) is a bar of bone that projects upward from the anterosuperior aspect to contact the frontal bone.

Palatine process

  • Horizontal shelf projecting from the medial aspect towards the midline and its opposite counterpart.
  • Forms the roof of oral cavity and floor of the nasal cavity.

Maxillary bones features - Facial view:

  • Frontal process
  • Infra-orbital foramen
  • Zygomatic process
  • Anterior nasal spine
  • Canine eminence

Features of the maxillary bones - Lateral view:

  • Frontal process
  • Infra-orbital foramen
  • Anterior nasal spine
  • Alveolar margin
  • Orbital surface
  • Zygomatic process
  • Maxillary bone

Features of the maxillary bones - Palatal (inferior) view:

  • Incisive foramen (fossa)
  • Palatine process

Features of the maxillary bones - Medial view:

  • Frontal process (1)
  • Maxillary sinus (2)
  • Palatine process (3)
  • Alveolar process (4)

Maxillary Surfaces

  • Orbital Surface that forms the floor of the orbit.
  • Facial forms the upper face
  • Nasal forms the bulk of the lateral wall of the nasal cavity.
  • Infratemporal forms the wall of the infratemporal region.

Maxillary Sinus

  • Large air space, with one in each maxillary bone.
  • It extends anteriorly to the facial surface
  • Extends laterally to the zygomatic process, and posteriorly to the infratemporal wall.
  • Extends inferiorly down to the alveolar process
  • Closely related to the roots of the maxillary molars

Abnormalities of the Maxilla

  • Cleft Palate occurs during development of the palate.
  • In a cleft palate, the 2 halves of the palate do not fuse properly.
  • Cleft lip and palate is the most common facial birth defect in the UK, affecting around 1 in every 700 babies.
  • Modern surgery produces excellent aesthetic and functional results.
  • Cleft lip is surgically revised in the first few months of life.
  • A cleft lip may affect one side of the lip, or there may be 2 clefts.
  • The cleft lip ranges from a small notch to a wide gap that reaches the nose.
  • A cleft palate may be an opening at the back of the mouth, or a split in the palate from back to front.
  • Sometimes it can be hidden by the lining of the roof of the mouth (the mucosa).
  • Difficulties with Cleft Palate will be discussed in greater detail in Year 2, and involves difficulty feeding, hearing problems, dental problems, and speech problems.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

More Like This

Overview of the Maxilla Anatomy
29 questions
Maxillary medium
45 questions

Maxillary medium

WiseTropicalIsland4758 avatar
WiseTropicalIsland4758
Maxilla
27 questions

Maxilla

UserFriendlySagacity4401 avatar
UserFriendlySagacity4401
Use Quizgecko on...
Browser
Browser