Exam 1; Applied Anatomy of the Periodontium Flashcards
In health, the probe penetrates to which landmark
the free gingival groove
In disease, the probe penetrates to which landmark
past junctional epithelium into connective tissue
What is a pseudo pocket?
The pushing down of the soft inflamed gingiva; the JE is still at the CEJ (no gingival stop)
Diagnosis of periodontitis is based upon what
attachment loss, not probe depths
Periodontitis occurs when
when the junctional epithelium migrates apically down the root surface
This is necessary for pocket formation
viable junctional epithelium
What are the landmarks to measure pocket depth
from the CEJ to JE/pocket depth
What three things shape the interdental papilla
the contact relationships between adjacent teeth
width of approximate tooth surfaces
course of CEJ
This is a concavity in the interdental papilla seen in the contact areas of premolar/molar region
col
What type of tissue makes up the col
non-keratinized epithelium (similar to JE)
The position and dimensions of the contact area determine what
probe angulations in posterior teeth
A width of keratinized tissue less that what predisposes to recession
2mm
A narrow gingiva cannot protect from what
friction; cannot buffer against muscle pull
A narrow gingiva facilities sub gingival plaque formation via which three mechanisms
mobile tissue causes pocket to open
facilitates food impaction
impedes oral hygiene
True or False
Narrow gingiva has the same resistance to attachment loss as wide gingiva
True
What are four characteristics of a thin phenotype
increases recession
more vulnerable to trauma
more inflammation
less favorable treatment outcome
When would you recommend gingival grafts
when recession causes symptoms; caries, esthetic concerns, progressive recession, sensitivity
subgingival restoration margins on thin biotype
pre-orthodontic therapy
Is tissue differentiation in the adult organism influenced by environmental or genetic factors
genetically determined
This determines epithelial characteristics
clinical translation
This is the main grafting procedure now
connective tissue grafts
This is seen in necrotizing ulcerative periodontitis
necrosis of the junctional epithelium; JE cells die = no pocketing; exposed bone
What are the two parts of the soft tissue attachment to tooth
fibrous tissue
JE
What is the biologic width of connective tissue attachment and epithelial attachment
CT = 1.06-1.08 mm epithelial = 1.4 mm
What is the average biologic width of the attachment apparatus
3 mm
Distance from the CEJ to the alveolar crest is what
3mm
The distance from crown margins to alveolar crest has to be what distance
3mm
If the required 3mm distance is not there, what must be done
crown lengthening
What two lineages of cells form the alveolar bone
cells from the dental follicle
cells independent of tooth development
When does bone remodel
in response to forces and tooth movement
What are the steps of wound dealing after an extraction
clot formation wound cleansing via immune cells new vasculature provisional connective tissue immature bone forms bundle bone is resorbed wound filled with woven bone bone maturation
Why is socket preservation important
for preserving bone morphology
What is the principle behind guided tissue regeneration
epithelium grows faster than bone or connective tissue
Epithelial exclusion will allow what
growth of cells
