Trigeminal Nucleus, SpinalTrigeminal NucleiMustard PlantTrigeminal Caudal NucleusStreptococcus oralisTrigeminal NerveFacial PainCentral Nervous System SensitizationBrain StemTrigeminal GanglionSubstantia GelatinosaNociceptorsAfferent PathwaysReceptors, Calcitonin Gene-Related PeptideSpinal CordRats, Sprague-DawleyNeurons, AfferentPhysical StimulationCell NucleusNeuronsVibrissaeElectric StimulationDihydroergotamineSumatriptanPonsMedulla OblongataMeningesMasseter MuscleProto-Oncogene Proteins c-fosWheat Germ Agglutinin-Horseradish Peroxidase ConjugateDental PulpCochlear NucleusNeural PathwaysTemporomandibular JointSpinal Cord InjuriesDura Mater