Perio Micro and Calculus Flashcards
1
Q
Red Complexes
A
P. gingivalis
T. forsythia
T. denticola
2
Q
Co-aggregation
A
- Cell to cell recognition of genetically distinct cell types
- Mediated by protein, glycoprotein and carb receptors
- cells are suspended
- clumps form- which then attach to pellicle
3
Q
Co-adhesion
A
- Interactions btw suspended and already adhering microbes
- influenced by temp and lactose
4
Q
Supragingival Calculus
Spans
color
consistency
removal is
commonly found
A
- Coronal to gingival margin
- white/ yellow
- Clay like consistency
- Easily detached from tooth
- Found opposite of salivary ducts
5
Q
Subgingival Calculus
location
Color
consistency
Spans
could become
A
- Below gingival margin
- Dark colored
- Hard dense
- Extend to base of pocket, does not reach JE
- With recession will become supra
6
Q
4 forms of calcium phosphate
A
- Brushite
- Octa Ca phosphate
- Hydroxyapatite
- Whitlockite
7
Q
Brushite
A
- Basis for supragingival calculus formation
- Seen in recent calculus (less than 2 weeks old)
8
Q
Octa Ca Phosphate
A
- Predominant in exterior layers
- Forms platelet like crystals
*
9
Q
Hydroxyapetite
A
- Predominant in inner layers of old calculus
- Forms rod or sand grain like crystals
10
Q
Whitlockite
A
- Most common form in subgingival calculus\Hexagonal crystals
11
Q
Osteoclast activators 7
A
- RANK-L from osteoblasts
- IL-1beta, IL-6, IL-11, IL-17
- PGE2
- TNF-Alpha
12
Q
Ratio of RANK-L and OPG in periodontitis
A
HIGH RANK-L
low OPG
13
Q
Chronic periodontal lesions mainly have
A
Th2 cells vs Th1
14
Q
Most predominant and active secretory cells in advanced periodontal lesions
A
Plasma Cells
