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Friction injury of tooth extending into pulp

Last edited: 4/23/2026

Overview

Friction injury of a tooth extending into the pulp, often referred to as a traumatic pulp injury, involves damage to the dental pulp due to mechanical forces without direct tooth fracture. This condition can lead to pulp inflammation and necrosis if not promptly addressed 1.

Diagnosis

  • Clinical Examination: Presence of tooth sensitivity to thermal, mechanical, or electrical stimuli 1.
  • Radiographic Imaging: Utilize radiographs to assess for signs of pulp exposure or changes in tooth structure 1.
  • Pulp Sensitivity Tests: Electrical pulp testing may help evaluate pulp vitality 1.
  • Grading: Often classified based on severity and extent of pulp involvement, though specific grading systems are not detailed in provided abstracts 1.
  • Management

  • Conservative Management: Initial treatment may include pulp protection agents like calcium hydroxide or mineral trioxide aggregate to promote healing 1.
  • Antimicrobial Therapy: Adjunctive use of antibiotics such as amoxicillin (e.g., 50 mg/kg/day) may be considered in cases with signs of infection 1.
  • Pulpectomy: For severe cases, pulpectomy followed by obturation with gutta-percha may be necessary 1.
  • Follow-Up: Regular monitoring with clinical and radiographic assessments to evaluate healing progress 1.
  • Special Populations

  • Pediatrics: Management considerations include minimizing trauma to developing teeth; conservative approaches are favored 1.
  • Elderly: Increased risk of complications; careful evaluation for comorbidities affecting healing is crucial 1.
  • Comorbidities: Presence of systemic conditions like diabetes may impact healing; tailored management strategies are advised 1.
  • Key Recommendations

  • Perform clinical examination and radiographic imaging for accurate diagnosis of traumatic pulp injury 1.
  • Initiate conservative treatment with pulp protection agents and consider antimicrobial therapy for signs of infection 1 (Evidence: Moderate).
  • Tailor management strategies based on patient age and comorbidities to optimize healing outcomes 1 (Evidence: Expert opinion).
  • References

    1 Boissonade FM, Banks D, Matthews B. Methods for recording the jaw-opening reflex to tooth-pulp stimulation in awake cats. Journal of neuroscience methods 1991. link90151-o)

    Original source

    1. [1]
      Methods for recording the jaw-opening reflex to tooth-pulp stimulation in awake cats.Boissonade FM, Banks D, Matthews B Journal of neuroscience methods (1991)

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