Maxillary anatomy Flashcards
Lamina Dura
The teeth sockets are
bounded by a thin
radiopaque layer of dense
bone.
Alveolar Crest
Is the gingival margin of the alveolar
process between teeth (radiopaque
line).
Periodontal
Ligament Space
It appears as a radiolucent space
between the tooth root and the
lamina dura.
Cancellous or
trabecular Bone
The cancellous bone lies between the cortical
plates in both jaws.
Anterior Nasal Spine
It is usually at or just below the
junction of the inferior end of the
nasal septum and the inferior
outline of the nasal aperture.
Intermaxillary Suture
(4)
▪Median suture
▪Extends from alveolar crest between #8
and #9 posteriorly to distal aspect of hard
palate
▪Uniform width
▪Variable shape
◦Angulation of central ray
Nasopalatine canal
(4)
▪Transmits nasopalatine nerves and vessels
▪Terminates in incisive foramen
▪Entrance foramina: two usually round or oval foramina in
the floor of the nasal cavity.
▪Not always seen
Incisive Foramen
(3)
▪Is the oral end of the nasopalatine canal
▪Variable size and shape
▪Variable position, due to x-ray beam angulation
Nasal cavity
(2)
▪Is located above the oral cavity.
▪Its floor is seen as a thin
radiopaque line
MAXILLARY SINUS
(3)
▪Is an air-containing cavity lined with mucous
membrane.
▪The borders appear in periapical radiographs as
a thin and radiopaque line.
▪May have internal septa
Inverted Y:
Formed by nasal fossa
and maxillary sinus
Nose
▪The soft tissue of the tip of the nose
can be seen in projections of the
maxillary incisors, superimposed over
the roots.
Lateral Fossa
(2)
▪Is a depression in the maxilla near
the apex of the lateral incisor.
▪It is formed by a depression in the
maxilla at this location.
Nasolacrimal Canal
▪Runs from the orbit inferiorly
to the nasal cavity.
ZYGOMATIC PROCESS OF
THE MAXILLA
▪The zygomatic process of the maxilla is an
extension of the lateral maxillary surface
that articulates with the maxillary process
of the zygoma.
