dental disorders
How To Do an Emergency Tooth Extraction
Relevant Anatomy
The floor of the maxillary sinus can be very thin, and roots of teeth may abut, or possibly enter, the sinus. The lateral wall of the maxilla is relatively thin. Thus, most maxillary teeth can be anesthetized by simple local infiltration over the apex (root tip) of the tooth, because the anesthetic solution readily diffuses through the thin lateral bone. Inferior alveolar nerve: Check an x-ray for proximity of lower molar roots to the nerve to avoid inadvertent nerve injury. Other dental nerves: To avoid nerve injury, avoid reflecting nearby mucosa (ie, lingual side of the mandible [lingual nerve], buccal side of the mandible in the premolar region [mental nerve]), and use caution reflecting mucosa above the maxillary canine/premolars (infraorbital nerve). Temporomandibular joint (TMJ): Because excessive pressure on the mandible can injure the joint, support the mandible with one hand and use a bite block if available. 