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59 Cards in this Set

  • Front
  • Back
Four Components of the Attachment Apparatus
Gingiva

PDL

Cementum

Alveolar Bone
Principal Fibers of the PDL (6)
Transseptal

Alveolar Crest

Horizontal

Oblique

Apical

Interradicular
Transseptal Fibers
Over the bone.
Alveolar Crest
Down from the height of the cementum to the bone.
Horizontal
Right angles of the tooth.
Oblique
Oblique angles to the tooth.

Tension Fibers

Prevents displacement from occlusal forces.
Interradicular
Furcations of multirooted teeth.
Functions of the PDL (3)
Physical

Formative and Remodeling

Nutritional and Sensory
Physical
Attach teeth to bone

Shock absorption

Transmit forces from occlusion
Formative and Remodeling
Formation/Resorption of bone, PDL, and cementum

Injury repair
Nutritional and Sensory
Blood Vessels

Nerves (V3)

Lymphatic drainage
Cementum
Avasuclar root covering

Primarily anchors teeth via PDL

Acellular and Cellular

Continuously deposited
Acellular Cementum
First to form

Cervical 1/2 to 1/3

Significantly calcified
Cellular Cementum
Formed after tooth eruption

Thicker than acellular

Less calcified
CEJ Patterns
60% Overlap

30% Edge to Edge

10% Fail to meet
Hypercementosis
Apical 1/3 of root

Supraeruption

Paget's disease of the bone

PA lesion
Systemic reasons for cementum resorption
Calcium deficiency

Hypothyroidism

Paget's disease of the bone
Ankylosis
Fusion of Cementum and bone

Lose tooth in 4-5 years
Alveolar Process
Bone that supports the tooth sockets
Basilar Bone
Apical to the alveolus.

Bone loss stops here
Fenestration
Root visible through a "window"
Dehiscence
Loss of gingiva and bone exposing root from CEJ.
Connective Tissue of the Gingiva
Lamina Propria
Papillary layer
Subjacent to epithelium
Reticular Layer
Continuous with Periosteum of the bone
Gingival Fiber Groups (3)
Gingivodental

Circular

Transseptal
Gingivodental
Tooth to marginal gingiva
Circular
Circle the tooth in the marginal/interdental gingiva
Transseptal
ALSO IN PDL

Connects cementum of approximating teeth.
Cells in the Marginal Gingiva
Fibroblasts

Mast Cells

Macrophages/Histiocytes

Plasma Cells/Lymphcytes

Neutrophils
Blood Supply (3)
Septa arterioles

Supraperiosteal Arterioles

Vessels of the PDL
Lympatics
Submaxillary group of Nodes
Nervous Fibers
PDL Fibers

Labial Nerves

Buccal Nerves

Palatal Nerves
Color
Healthy - Coral Pink

Disease - Red, Blue, Greyish White

Affected by the vascularity
Tissue Size
Diseased - Enlarged, puffy, bulky, edematous

Caused by bulk of cellular/intercellular elements
Tissue Contour
Mainly of the MARGINAL gingiva

Depends on the teeth shape and alignment
Shape
Mainly the papillary shape

Favorable - Knife Edge

Spacing - Flat or blunted
Surface Texture
Stippling is not always present, and a lack of it does not indicate a lack of health.

Glassy, ulcerated, and sloughing tissues are abnormal.
Active Eruption
Movement of teeth in an occlusal direction
Passive eruption
Tooth exposure by apical resorption of gingiva.
Anatomic Crown
Covered by enamel
Anatomic Root
Covered by cementum
Clinical crown
Above the gingiva
Clinical Root
Covered by Periodontium
Periodontium
Tissues that surround and support the teeth.

Gingiva

PDL

Cementum

Alveolar Bone
Components of Gingiva (3)
Marginal (unattached)

Attached

Interdental
Margina (unattached) Gingiva
Separates from the tooth with gentle probing.

2-3 mm
Attached Gingiva
Bound to the periosteal bone.

Stops at the MGJ
Interdental Gingiva
Occupies the embrasures.

Col or Pyramidal
Free Gingival Groove
Apical extent of the marginal gingiva
Mucogingival Junction
Separates the attached gingiva from the alveolar mucosa.
Gingiva Histology
Connective tissue core, with Stratified Squamous epithelial covering.

Principle cell of epithelium is the keratinocyte.
Melanocytes
Produce melanin pigment
Langerhans
Immune response
Merckel Cells
Tactile sensation
Oral Epithelium
Parakeratinized, covers the outer surface of the gingiva.
Sulcular epithelium
Lines the sulcus from the junctional epithelium to the crest of the margina gingiva.

Non-keratinized, but will keratinize if bacteria are eliminated
Junctional Epithelium
Collar that attaches to tooth via hemidesmosomes.

Non-keratinzed, 1mm, biological seal
Gingival/Sulcular fluid
EXUDATE from connective tissue that has:

Antibodies

Plasma protein

Which help prevent infection and clean the sulcus.