Diseases of the pulp Flashcards
Draw out the connection between the diseases of the pulp
What is caries
- demineralisation of the tooth due to acid attack created by bacteria in the mouth as they metabolise sugars
What can caries result in
pulp hyperaemia
What is pulp hyperaemia
- increase of blood supply in the pulp chamber
What are the outcomes of pulp hyperaemia
- recovery
- acute pulpitis
What is acute pulpitis
sudden onset of pulpal inflammation
What are the 2 outcomes of acute pulpitis
- chronic pulpitis (can go back and forth between these two states)
- acute apical periodontitis
What is acute apical periodontitis
- The infection can spread outside of the pulp chamber where it then becomes acute apical periodontitis and this will be accompanied by a change in symptoms
What are the outcomes of acute apical periodontitis if untreated
- acute apical abscess
or
- jump straight to chronic apical infection (granuloma)
What is an acute apical abscess
a collection of pus
What are the outcomes of acute apical abscess if untreated
- can go back and forth of being a chronic sinus
- can go back and forth of being a chronic apical infection (granuloma)
What can a chronic sinus turn into if untreated
- can go back to being and forth with being an acute apical abscess
- can go back and forth with being a chronic apical infection
What can a chronic sinus turn into if untreated
- can go back to being and forth with being an acute apical abscess
- can go back and forth with being a chronic apical infection
What is a chronic sinus
- infection perforates bone and soft tissue to drain
What can a granuloma turn into
- an apical cyst which are not painful but can grow into large sizes
When does a apical cyst become painful
If it turns into an infected apical radicular cyst
What is a periapical granuloma
not a true granuloma as there is no epithelioid histiocytes mixed with the lymphocytes and giant cells. Instead it is a mass of chronically inflamed granulation tissue at the apex of the tooth (containing plasma cells, lymphocytes and few histiocytes with fibroblasts and capillaries)
What is a radicular cyst
a radicular cyst is defined as a cyst arising from epithelial residues (cell rests of Malassez) in the PDL as a consequence of inflammation, usually following the death of the dental pulp
What are causes of periapical radicular cysts
- Caries, trauma, periodontal disease
- Death of dental pulp
- Apical bone inflammation
- Dental granuloma
- Stimulation of epithelial rests of Malassez
- Epithelial proliferation
- Periapical cyst formation
What are the clinical features of pulp hyperaemia
Pain is sharp and only lasting for seconds
Pain stimulated by hot/cold or sweet foods
Pain resolves after stimulus
Usually caries can be seen approaching the pulp but the tooth can still be restored
What is the tx for pulp hyperaemia
Restore and monitor
What are the clinical features of acute pulpitis
Constant severe pain
Reacts to thermal stimuli
Poorly localised pain
No response to analgesia
Open pulpitis symptoms are less severe
How will acute pulpitis respond to percussion
Unlikely to be TTP because the periodontal ligament is not inflamed yet
How will acute pulpitis respond to pulp testing
Pulp testing will not show much