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The Pterygomandibular Space: A Volumetric Evaluation Using the Novel A-Silicone Injections Method.

Hadi Darawsheh1, Ali Alsaegh2, Elena Kanukoeva3

  • 1N.V. Sklifosovskiy Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia.

Diagnostics (Basel, Switzerland)
|June 19, 2024
PubMed
Summary
This summary is machine-generated.

Understanding pterygomandibular space (PM) anatomy is crucial for successful inferior alveolar nerve blocks (IANB). This study found PM volume correlates with cranial index and cadaver age, averaging 1.5 anesthetic cartridges.

Keywords:
anatomyanesthesiadentistrylocal anesthesiamandibular nervepterygomandibular space

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Area of Science:

  • Anatomy
  • Oral Surgery
  • Radiology

Background:

  • Inferior alveolar nerve block (IANB) is a common dental procedure.
  • Safe and successful IANB administration relies on understanding pterygomandibular space (PM) anatomy.
  • Anatomical variations in the PM can impact IANB efficacy and safety.

Purpose of the Study:

  • To evaluate the volume of the pterygomandibular space (PM) using A-silicone injections.
  • To investigate correlations between PM volume and craniometric measurements (Cranial Index, Facial Index) and cadaver age.
  • To provide anatomical data for optimizing IANB techniques.

Main Methods:

  • Cadaveric anatomical study using 46 human heads (25 male, 21 female).
  • A-silicone (1.7 mL equivalent to local anesthetic cartridges) injected into the PM via Halstead mandibular block.
  • Craniometric analysis including Cranial Index (CI) and Facial Index (FI); evaluation of silicone volume (length, width, thickness) and number of cartridges used.

Main Results:

  • Statistically significant positive correlations found between CI and the width of the right PM.
  • Significant correlations observed between CI and the width and length of the left PM.
  • A positive correlation between cadaver age and the width of the left PM was noted; older individuals had wider spaces.

Conclusions:

  • The average volume of the pterygomandibular space is equivalent to approximately 1.5 anesthetic cartridges.
  • Cranial Index and cadaver age are significant factors influencing pterygomandibular space dimensions.
  • These findings contribute valuable anatomical insights for improving the precision and success rate of inferior alveolar nerve blocks.