Transcript 313 PCS Course Revision

Sunday 15th December, 2012
 What
is the normal color of gingiva?
 What is the normal shape, contour, and
texture?
 What is the normal consistency?
 What
is the normal depth of Gingival
Sulcus?
 How
can we measure the width of
Keratinized Gingiva and Attached
Gingiva?
 Where
do we find the greatest width of
Attached Gingiva? Narrowest?
 What
is the Major cell type of gingival
epithelium?
 In
terms of Keratinization:
Palate?
Outer (Oral) Epithelium?
Sulcular Epithelium?
Junctional Epithelium?
 What
are the functions of Gingival
Sulcular Fluid?
1- Cleanse material from the sulcus.
2- Contain plasma proteins that may
improve adhesion of the epithelium to
the tooth.
3- Antimicrobial properties.
4- Antibody activity to defend the gingiva.
 What
are the three types of collagen
fibers in gingiva?
 1-
Collagen Type I
Tensile Strength.
Main Bulk
 2-
Reticular Type IV Collagen
Continuous with fibers of basement
membrane.
 3-
Elastic fibers
collagen fibers.
distributed among
 What
are the sources of blood supply to
the gingiva?
1- Supraperiosteal arterioles.
2- Vessels of the periodontal ligament.
3- Arterioles from the crest of interdental
septa.
 What
is the most important element in
the periodontal ligament?
 What
is Sharpey’s fibers?
 What
is the main composition of the
Principal fibers?
 How
many arrangement are their for
principal fibers?
1- Transeptal Group
Between 2 teeth
above the crest.
2- Alveolar Crest Group
run
obliquely
prevent extrusion and
lateral movement.
3- Horizontal Group.
4- Oblique Group
Largest group
resist masticatory stress and transmit it to
bone.
5- Apical Group.
6- Interradicular group
 What
are the major cells in periodontal
ligaments?
 What
are the main functions of
periodontal ligament?
1- Resistance to Impact of Occlusal Forces
(Shock Absorption).
2- Transmission of Occlusal Forces to Bone.
3- Formative and Remodeling Functions.
4- Nutritional and Sensory Functions.
 What
are the main types of Cementum?
1- Acellular Cementum
half of root.
2- Cellular Cementum.
the cervical
 What
is the Alveolar process?
 What is the Alveolar Bone Proper?
 What is Periosteum and Endosteum?
 What
are Fenestrations and Dehiscence?
 What
is the difference between Gingivitis
and Periodontitis?
 How
do we classify Gingivitis and
Chronic Periodontitis?



Dental plaque: is defined clinically as a structured, resilient
yellow-grayish substance that adheres tenaciously to the
intraoral hard surfaces, including removable and fixed
restorations. The tough extracellular matrix makes it
impossible to remove plaque by rinsing or the use of sprays.
Materia alba: refers to soft accumulations of bacteria, food
matter, and tissue cells that lack the organized structure of
dental plaque and are easily displaced with a water spray.
Calculus is a hard deposit that forms by mineralization of
dental plaque and is generally covered by a layer of
unmineralized plaque
 The
process of plaque formation can be
divided into several phases:
1- The formation of the pellicle on the tooth
surface.
2- Initial adhesion/attachment of bacteria.
3- Colonization/plaque maturation
 What
are the differences between Supra
and Sub Gingival Calculus?