Week 2 Chapter 3-5 Flashcards
Disease progression
the sequence of events that occur during the development of a
disease or abnormal condition
- disease progression may vary from:*
- (1) one individual to another*
- (2) one site to another in a person’s mouth,*
- (3) one type of periodontal disease to another.*
Gingivitis
a type of periodontal disease characterized by changes in the color, contour, and consistency of the gingival tissues
Reversible (tissue damage)
when the body can repair the damage
Periodontitis
a type of periodontal disease that is characterized by the
apical migration of the JE,
loss of connective tissue attachment,
and
loss of alveolar bone
Irreversible tissue damage
permanent tissue damage
apical migration of the junctional epithelium (JE)
the movement of the junctional epithelium apical to its normal location
Inflammation
the body’s response to injury or invasion by
disease-producing organisms
Alveolar bone loss
the resorption of alveolar bone as a result of periodontitis
Horizontal bone loss
results in a fairly even, overall reduction in the height of the alveolar bone
Vertical bone loss
results in an uneven reduction in the height of the alveolar bone
Osseous defect
bony defects
Infrabony defect
results when bone resorption occurs in an uneven,
oblique direction
(primarily affects one tooth)
Osseous crater
a bowl-shaped defect in the interdental alveolar bone with bone loss
nearly equal on the roots of two adjacent teeth
the presance of a crater causes dental plaque biofilm to accumulate in the interdental area.
Furcation involvement
occurs on a multirooted tooth when periodontal infection
invades the area between and around the roots, resulting in a loss of
alveolar bone between the roots of the teeth
Bone loss in the furcation area may be hidden by the gingival tissue
or may be clinically visible in the mouth
Attachment loss
the destruction of the fibers and bone that support the teeth
Tissue destruction does not spread only in an apical (vertical) direction
but also in a lateral (side-to-side) direction.
Disease site
an area of tissue destruction
A disease site may involve only a single surface of a tooth (distal)
surface of a tooth. The disease site may involve several surfaces of the
tooth or all four surfaces (mesial, distal, facial, and lingual)
Inactive disease site
a disease site that is stable, with the attachment level of the JE
remaining the same over time
Active disease site
a disease site that shows continued apical migration of the JE over time
Gingival pocket
a deepening of the gingival sulcus as a result of
swelling or enlargement of the gingival tissue
Periodontal pocket
a pathologic deepening of the gingival sulcus
greater than 4mm
A periodontal pocket is an area of tissue destruction left by the disease process.
- The majority of pockets in most adult patients with periodontitis are
- inactive disease sites.**
Suprabony pocket
occurs when there is horizontal bone loss
- The junctional epithelium, forming the base of the pocket, is located
- coronal to (above)** the crest of the alveolar bone.
Infrabony pocket
occurs when there is vertical bone loss
The junctional epithelium, forming the base of the pocket, is located
apical to (below) the crest of the alveolar bone. The base of the
pocket is located within the cratered-out area of the bone alongside
of the root surface.
Intermittent disease progression theory
states that periodontal disease is characterized by periods of disease activity
and inactivity (remission)
- Tissue destruction is sporadic, with short periods of tissue destruction
- alternating** with periods of disease inactivity (no tissue destruction).
Epidemiology
the study of the health and disease within the total population (rather than an individual) and the behavioral, environmental, and genetic risk factors that influence health and disease
- Epidemiological research has three objectives:*
- (1) to determine the amount and distribution of a disease in the total population and in subgroups*
- (2) to investigate the causes of a disease*
- (3) to apply this knowledge to the control and prevention of disease.*