Applied Anatomy Anatomical Land Marks Applied Anatomy .
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Transcript of Applied Anatomy Anatomical Land Marks Applied Anatomy .
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Applied Anatomy
Anatomical Land Marks Applied Anatomy
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MAXILLA
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MANDIBLE
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Residual Alveolar Ridge
The bony process that remains after the teeth have been lost, is the residual alveolar ridge.
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The Incisive Papilla:
Soft tissue pad covering nerve & blood vessels.
Constant in position – tooth arrangement.
Central incisors 09-mm labial, laterla incisor 11, canine 12
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Labial & Buccal Freni
A narrow band of fibrous submucosal
tissue bridging the buccal, labial, or lingual
sulci.
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Labial FrenumIt starts
superiorly in a fan
like shape and
terminates on the
labial surface of
the ridge usually
at midline.
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Buccal Frenum
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Labial Sulcus & Flange
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Buccal Sulcus And Flange
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Maxillary TuberosityThe maxillary
tuberosity is formed by the junction of the posterior wall of maxilla with alveolar process.
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Pterygomaxillary/Hamular Notch
IT IS FORMED BY THE JUNCTION OF TUBEROSITY OF MAXILLA AND HUMULUS OF MEDIAL PTERYGOID PLATE
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Fovea Palatinae
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The Vibrating Line
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Posterior Palatal Seal Area/Post Dam Area
Anterior Vibrating line
Posterior Vibrating line
Post Dam Area
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Posterior Palatal Seal Area Post Dam Area
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The Palatal Gingival Vestige
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Rugae Area
They are a series of bilateral elevations on the anterior part of the palate.
They assist the tongue in speech
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Palatine Raphe
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TORUS PALATINUSThe symphysis
between the palatal processes of maxillae along the median sagittal suture consists of cortical bone.
The symphysis of excessively exostosed bone is referred to as torus palatinus.www.departmentofprosthodontics.com
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MANDIBLE
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Labial frenum Fibrous band .Unlike the maxillary
labial frenum,it is active.
Labial frenum has attachment of the incisivus and orbicularis oris muscle.
On opening wide,the sulcus gets narrowed.
Hence the impression will be narrowest in the anterior labial region.
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Labial sulcusThis is space between the residual ridge
and lips.
The length and thickness of the labial flange of the denture occupying this space is crucial in influencing lip support and retention.
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Buccal frenum
It extend from buccal aspect of residual ridge to cheek.
The fibers of the buccinator are attached to the frenum.
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Buccal sulcusIt extends posteriorly from the buccal
frenum till the retromolar region.It is bound by residual ridge on one side
and buccinator on the other side.This space is influenced by the action of
masseter.when the masseter contracts, it pushes inward against the buccinator, producing a bulge into the mouth.it is reproduced as a notch in the denture flange called the masseteric notch.
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masseteric notch
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Buccal shelf It is area between the
buccal frenum and anterior border of the masseter. Its boundaries are:
Medially the crest of the ridge
Distally the retro-molar pad
Laterally the external oblique ridge
o The width of the buccal shelf area increases as alveolar resorption continues.
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Retromolar padRetromolar pad as a
triangular soft elevation of mucosa that lies distal to the third molar.
It is an important structure, which forms the posterior seal of the mandibular denture.
It is bounded posteriorly by the tendons of the temporalis,lateraly by buccinator and medially by the pterygomandibular raphe and superior constrictor.
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Mylohyoid ridgeIt runs along the
lingual surface of the mandible.
Anteriorly the ridge lies close to the inferior border of mandible while posteriorly,it lies flush with residual ridge.
Mylohyoid ridge should be relieved during complete denture fabrication.
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ALVEOLOLINGUAL SULCUSthe space between the residual ridge and
the tongue extends from the lingual frenum to mylohyoid curtain.
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Pterygomandibular RapheIt arises from the hamular process of the
medial pterygoid plate and gets attached to the mylohyoid ridge.
Superior constrictor is inserted posteromedially and the buccinator is inserted anterolateraly.
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Sulcus; Modiolus
B Buccinator muscle
DAO Depressor Anguli Oris m.
II Incisivus Inferior m.
IS Incisivus Superior m.
LAO Levator Anguli Oris m.
OO Orbicularis Oris m.
ZM Zygomaticus Major m.www.departmentofprosthodontics.com
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Functional Anatomical Relations
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