TCDHA
TCDHA Periodontics Midterm - Final
Review 2026 Update
Tissue necrosis
Localized tissue death
Necrotizing gingivitis
Limited to gingival tissues
Necrotizing periodontitis (NP)
Necrosis of gingival tissues, PDL and alveolar bone
Necrotozing stomatitis
Severe necrosis extending beyond gingiva to other parts of oral caivty: such as tongue,
cheeks and palate
Bone denudation occurs through alveolar mucosa tissue
Rarest form of NPD
How fast can NPD (necrotizing periodontal disease) escalate?
Rapidly escalates and produce loss of PDL attachment within days
What is the appearance of NPD?
Gives the appearance that papillae and gingival margins have been "punched out" or
"cratered"
Pseudomembrane (false membrane)
Gray layer of tissue that covers the necrotic areas of gingiva
TCDHA
, TCDHA
In NPD which lymph nodes swell?
- submandibular
- cervical
What are the symptoms of severe NPD?
- fever
-malaise
- increased pulse rate
- loss of appetite
What is the progression of NPD?
- within days interdental areas are separated into 1 facial papilla & 1 lingual papilla w
necrotic depression b/w them
- craters formed within separation
- when craters are formed PDL ligaments + alveolar bone become destroyed = loss of
attachment
Factors for NPD
- caucasian
- poor nutrition
- poor eating habits of young adults
- pre existing gingivitis/traume
What is the mean age of NPD in industialized countries?
22-24 years old
What is not a clinical sign or symptom of NPD?
Stippling and knife-edged papilla
TCDHA
TCDHA Periodontics Midterm - Final
Review 2026 Update
Tissue necrosis
Localized tissue death
Necrotizing gingivitis
Limited to gingival tissues
Necrotizing periodontitis (NP)
Necrosis of gingival tissues, PDL and alveolar bone
Necrotozing stomatitis
Severe necrosis extending beyond gingiva to other parts of oral caivty: such as tongue,
cheeks and palate
Bone denudation occurs through alveolar mucosa tissue
Rarest form of NPD
How fast can NPD (necrotizing periodontal disease) escalate?
Rapidly escalates and produce loss of PDL attachment within days
What is the appearance of NPD?
Gives the appearance that papillae and gingival margins have been "punched out" or
"cratered"
Pseudomembrane (false membrane)
Gray layer of tissue that covers the necrotic areas of gingiva
TCDHA
, TCDHA
In NPD which lymph nodes swell?
- submandibular
- cervical
What are the symptoms of severe NPD?
- fever
-malaise
- increased pulse rate
- loss of appetite
What is the progression of NPD?
- within days interdental areas are separated into 1 facial papilla & 1 lingual papilla w
necrotic depression b/w them
- craters formed within separation
- when craters are formed PDL ligaments + alveolar bone become destroyed = loss of
attachment
Factors for NPD
- caucasian
- poor nutrition
- poor eating habits of young adults
- pre existing gingivitis/traume
What is the mean age of NPD in industialized countries?
22-24 years old
What is not a clinical sign or symptom of NPD?
Stippling and knife-edged papilla
TCDHA
