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Pulpal pain diagnosis--a review.
1School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Journal of Endodontics
|February 24, 2001
Summary
Dental pulp pain involves two nerve fiber types: fast A-delta fibers causing sharp pain and slow C-fibers causing dull pain. A history of tooth pain indicates pulp damage, aiding diagnosis.
Area of Science:
- Dentistry
- Neuroscience
- Pain Research
Background:
- Dental pulp pain is transmitted via distinct nerve pathways.
- A-delta fibers mediate sharp, lancinating pain, while C-fibers transmit dull, aching pain.
- Pain perception varies with stimuli and tooth region.
Purpose of the Study:
- To investigate the characteristics of dental pulp pain pathways.
- To correlate pulp histopathology with pain presentation.
- To assess the diagnostic value of pain history in pulpitis.
Main Methods:
- Review of existing studies on dental pulp nerve fibers and pain mechanisms.
- Analysis of patient-reported pain history and its correlation with clinical findings.
- Histopathological examination of dental pulp tissue.
Main Results:
- Two primary nerve pathways (A-delta and C-fibers) identified in dental pulp, each with unique pain qualities.
- Increased pain incidence correlates with worsening pulp histopathology (pulpitis).
- A history of previous toothache in 80% of severe pain cases indicates chronic partial pulpitis with necrosis (untreatable).
- The remaining 20% with a pain history show treatable pulpitis without necrosis.
Conclusions:
- Dental pulp pain is mediated by distinct fast and slow nerve fibers.
- Patient's pain history is a crucial diagnostic tool for assessing pulpitis reversibility and severity.
- Understanding pain history aids in treatment decisions, distinguishing between reversible and irreversible pulpitis.