Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
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. |