Exam 2 part 3 Flashcards
4 patterns of bone loss
Horizontal
Vertical
Osseous crater
Reverse architecture
Most common destructive pattern of bone loss
Horizontal
What type of bone defect regenerates best
3 wall defect (Vertical bone loss)
4 wall defect is also called? Does this exist in normal dentition
Circumferential
Does not exist in natural dentition
- It is an extraction socket and the ideal bone graft scenario
What bone defect regerenates worst
1 wall defect (hemiseptum)
- 1 wall defectgs and horizontal bone loss cannot be grafted
What is reverse architecture
- Angular or U-shaped defects
- Abrupt differences in height:
- facial or lingual margins
- interdental septa
Also called inconsistent margins
*Interproximal bone crest is apical to facial and lingual crest
most frequently occurring osseous defect
Osseous crater
- Concavities in the crest of the alveolar bone
- Confined within facial and lingual walls
Primary vs Secondary occlusal trauma
Primary –> occurs when excessive occlusal forces exerted on a tooth w/ normal periodontium (no bone loss, no perio disease, possible widened PDL space)
Secondary –> Occurs when normal or excessive forces are placed on a tooth w/ reduced periodontium
How do you see occlusal trauma on a radiograph
Widened PDL space, disruption/loss of lamina dura, root resorption
What happens when there is no occlusal surface
Hypofunction –> a lack of occlusion, atrophy of the periodontium, narrowing of PDL space, tendency towards extrusion, increase in cementum thickness, thinning of alveolar bone
Common PD pathogens
porphyromonas gingivalis
Tannerella forsythia
Treponema denticola
- A. actinomycetemcomitans
- Prevotella intermedia
Oral manifestations of HIV
Oral Hairy Leukoplakia Oral Candidiasis Kaposi's Sarcoma Bacillary (Epitheloid) Angiomatosis Oral Hyperpigmentation
Describe oral hairy leukoplakia
- Lateral border –> tongue
- Keratotic area, corrugated, which may appear shaggy
Describe Oral candidiasis
Diminished hot resistance
Candida albicans
Often refractory
Kaposi’s Sarcoma
Vascular neoplasm
HHV-8 associated
Localized, slow growing
