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Retromolar Trigone
Surjith Vattoth, MD, FRCR; H. Ric Harnsberger, MD
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TERMINOLOGY

  • Abbreviations

    • Retromolar trigone (RMT)
  • Definitions

    • RMT: Small triangular subsite of oral cavity composed of mucosa posterior to last mandibular molar that covers anterior surface of lower ascending ramus of mandible and extends superiorly up to maxillary tuberosity
    • Pterygomandibular raphe (PMR): Thick fascial band that extends between posterior border of mandibular mylohyoid ridge and hamulus of medial pterygoid plate
      • Fascial band represents thickening of middle layer of deep cervical fascia condensed between posterior margin of buccinator muscle and anterior margin of superior constrictor muscle

IMAGING ANATOMY

  • Overview

    • Extent

      • Anatomy Relationships

        • Internal Contents

          ANATOMY IMAGING ISSUES

          • Questions

            • Imaging Recommendations

              • Imaging Pitfalls

                CLINICAL IMPLICATIONS

                • Clinical Importance

                  Related Anatomy
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                  Related Differential Diagnoses
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                  References
                  Tables

                  Tables

                  TERMINOLOGY

                  • Abbreviations

                    • Retromolar trigone (RMT)
                  • Definitions

                    • RMT: Small triangular subsite of oral cavity composed of mucosa posterior to last mandibular molar that covers anterior surface of lower ascending ramus of mandible and extends superiorly up to maxillary tuberosity
                    • Pterygomandibular raphe (PMR): Thick fascial band that extends between posterior border of mandibular mylohyoid ridge and hamulus of medial pterygoid plate
                      • Fascial band represents thickening of middle layer of deep cervical fascia condensed between posterior margin of buccinator muscle and anterior margin of superior constrictor muscle

                  IMAGING ANATOMY

                  • Overview

                    • Extent

                      • Anatomy Relationships

                        • Internal Contents

                          ANATOMY IMAGING ISSUES

                          • Questions

                            • Imaging Recommendations

                              • Imaging Pitfalls

                                CLINICAL IMPLICATIONS

                                • Clinical Importance