Oma lab 1
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Transcript of Oma lab 1
By: Dr. Brian E. Esporlas
Muscular and largest single organ in the mouth
Anterior 2/3 located in the floor of the mouth
Posterior 1/3 in the pharynx
Divided antero porterior by the sulcus terminlis.
Divided into anterior lateral halves by the lingual septum
Filiform papilla: numerous, pointed, cone shaped
Fungiform papilla: mushroom shape
Foliate papilla: are narrow mucosal flds bilaterally located along the posterior border of the body about 4 to 8 in number. Well developed at birth and became atrophied in mature individual
Vallate: largest papilla. 8 to 10 in numbers. Arranged in v-shape manner.
Masses of lymphoid tissue with the primary function of producing lymphocytes and has a role in immunization 4 in numbers. And formed the protective ring of waldeyer Palatine tonsils, lingual tonsils and pharyngeal tonsils
Parotid
Submandibular
sublingual
Clinical crown
Anatomical crown
Anatomical root
(covered by
cementum)
Clinical root (
implanted and
surrounded by the
periodontium
Enamel: hardes calcified tissue covering the anatomical crowns of teeth
Dentin: main bulk of the tooth underneath the enamel and cementum
Cementum: calcified tissue that covers the anatomical root
Alveolar bone: part of the jaw that forms the alveolar socket where the tooth is embeded
Gingiva: a firm mucosa around the neck of the teeth
Periodontal ligament is the fibrous connective tissue found between the roots of the teeth and alveolar bone.
Dr. Brian E. Esporlas
Fertilzation:
union of two
gametes
Blastomeres. The
zygote 2 daughter
cells
3rd day of
development a
sloid ball of cell is
formed.
16 cell.
Inner cell mass and outer cell mass. With fluid
filled cavity known as blastocoel.
Formation of 2 germ layers
Human facial development begins at
approximately four weeks post conception
with the appearance of the five processes,
which surrounds the early oral cavity or the
so called STOMODEUM.
Frontonasa process
Maxillary process (paired)
Mandibular process (paired)
Development of the frontonasal process
rapidly enlagres as the underlying forebrain
expands into bilateral cerebral hemispheres
The mandibular processes unite to provide
continuity to the forbearer of the lower jaw
and lip.
Medial and lateral nasal processes from
within the enlarge frontonasal process to
surround an early ectodermal thickening, the
nasal placode.
Medial growth of the maxillary processes
dominates subsequent development of the
face resulting in contact then fusion with the
lateral nasal processes.(forming nasolacrimal
duct, cheek and alar base of future nose)
Further growth towards the midline pushes the lateral nasal
processes superiorly and allows fusion of the maxillary
processes with the medial processess inferiorly merging them
together in the midline to form:
Central portion of the nose, upper lip philtrum and primary
palate.
The palatine shelves are forming from the maxillary
processes and are directed downward on each side of the
developing tongue.
The tongue has been depressed and the
palatine shelves are elevated but not fussed.
Fusion of the shelves and the nasal septum is
completed.
Cleft palate
Cleft lip
combination
Clefts of the lip and clefts of the palate can
occur simultaneously or separately.
Identify as primary or secondary.
The primary palate includes: Lip and
Alveolus
The secondary palate includes: Hard
palate, Soft palate, Uvula
Any cleft of the primary or secondary palate may
be complete or incomplete, depending on whether
or not the cleft involves the entire anatomic structure.
Any cleft of the primary or secondary palate may
be unilateral or bilateral.
Submucous clefts of the secondary palate may also
occur.
12th July 2008 Dr. Christine Underhill
12th July 2008 Dr. Christine Underhill
Draw the following
President dabu please submit all sketch pads
to advance orthodontics department. Nov 15.
11am.
Read chapter 5