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MAXILLARY ANESTHESIA

MAXILLARY ANESTHESIA. Techniques of Maxillary Anesthesia. Local Infiltration Field Block Nerve Block. Maxillary Injection Techniques . Supraperiosteal Periodontal ligament Intraseptal injection Posterior superior alveolar nerve block Middle superior alveolar nerve block.

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MAXILLARY ANESTHESIA

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  1. MAXILLARY ANESTHESIA

  2. Techniques of Maxillary Anesthesia Local Infiltration Field Block Nerve Block

  3. Maxillary Injection Techniques Supraperiosteal Periodontal ligament Intraseptal injection Posterior superior alveolar nerve block Middle superior alveolar nerve block

  4. Maxillary Injection Techniques Anterior superior alveolar nerve block Maxillary (second division) nerve block Greater (anterior) palatine nerve block Nasopalatine nerve block

  5. Supraperiosteal Injection

  6. Indications Pulpal anesthesia of one or two maxillary teeth Soft tissue anesthesia when indicated Hemostasis

  7. Contraindications Infection or acute inflammation in the area Dense bone covering apices of teeth

  8. Advantages High success rate (>95%) Technically easy injection Usually entirely atraumatic

  9. Areas Anesthetized Entire area innervated by the large terminal nerve branches: Tooth pulp and root area Buccal periosteum Mucous membrane and connective tissue

  10. Disadvantages Not suitable for large areas Multiple needle insertions Large volumes of anethetic solution

  11. Percent Positive Aspiration: Negligible, but possible (<1%)

  12. Alternatives Periodontal ligament injection Regional nerve block

  13. Technique Apply topical Landmarks - mucobuccal fold long axis of tooth Insert needle at height of mucobuccal fold Target area - apex of tooth Aspirate, deposit approx. 0.6-1 ml solution

  14. Signs and Symptoms Numbness Absence of pain during dental therapy

  15. Safety Feature Minimum opportunity for intravascular administration

  16. Failures of Anesthesia Inadequate needle penetration - not adjacent to tooth apex Needle too far from bone

  17. Posterior Superior Alveolar Nerve Block Nerve Anesthetized: Posterior Superior Alveolar Nerve (PSA) - for maxillary molars and buccal tissue

  18. Indications for PSA Block First or second maxillary molar Supraperiosteal injection is contraindicated

  19. Contraindication Risk of hemorrhage is too great (eg. hemophelia, coumadin)

  20. Advantages Atraumatic High success rate Less number of injections Minimize amount of local used

  21. Disadvantages Risk of hematoma Does not anesthetize first molar completely No bony landmarks

  22. Positive Aspiration Approximately 3.1%

  23. Landmarks Mucobuccal fold Maxillary tuberosity Zygomatic process of maxilla

  24. Area of Insertion Mucobuccal fold above maxillary second molar

  25. Technique 25 gauge, long needle Position patient and identify landmarks Advance needle upward, inward and backward Aspirate, inject 1.8 ml of solution

  26. Failures of Anesthesia Needle too lateral Needle not deep enough Needle too far superior

  27. Complications Hematoma Mandibular anesthesia

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