Dong K Ahn

Summary

Affiliation: Kyungpook National University
Country: Korea

Publications

  1. pmc Functional properties of tooth pulp neurons responding to thermal stimulation
    D K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, 188 1 Sam Deok 2ga, Chung gu, Daegu, Korea
    J Dent Res 91:401-6. 2012
  2. pmc Progesterone produces antinociceptive and neuroprotective effects in rats with microinjected lysophosphatidic acid in the trigeminal nerve root
    Min Ji Kim
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, South Korea
    Mol Pain 8:16. 2012
  3. pmc A novel computerized system for thermal stimulation of tooth in ferrets
    Dong K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook University, 188 1 Sam Deok 2ga, Chung gu, Daegu 700 412, Republic of Korea
    J Neurosci Methods 203:305-10. 2012
  4. pmc Signal transduction mechanisms underlying group I mGluR-mediated increase in frequency and amplitude of spontaneous EPSCs in the spinal trigeminal subnucleus oralis of the rat
    Ji Hyeon Song
    Department of Oral Physiology, School of Dentistry and Brain Korea 21, Brain Science and Engineering Institute, Kyungpook National University, 188 1 Samduk 2 ga, Chung gu, Daegu 700 412, Korea
    Mol Pain 5:50. 2009
  5. ncbi request reprint Microinjection of arginine vasopressin into the central nucleus of amygdala suppressed nociceptive jaw opening reflex in freely moving rats
    D K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Taegu, South Korea
    Brain Res Bull 55:117-21. 2001
  6. doi request reprint Compression of the trigeminal ganglion produces prolonged nociceptive behavior in rats
    Dong K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
    Eur J Pain 13:568-75. 2009
  7. pmc Intracisternal administration of NR2 subunit antagonists attenuates the nociceptive behavior and p-p38 MAPK expression produced by compression of the trigeminal nerve root
    Hye J Jeon
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Korea
    Mol Pain 7:46. 2011
  8. ncbi request reprint Blockade of central cyclooxygenase (COX) pathways enhances the cannabinoid-induced antinociceptive effects on inflammatory temporomandibular joint (TMJ) nociception
    Dong K Ahn
    Department of Oral Physiology and BrainKorea21, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
    Pain 132:23-32. 2007
  9. doi request reprint Intratrigeminal ganglionic injection of LPA causes neuropathic pain-like behavior and demyelination in rats
    Dong K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, 188 1 Sam Deok 2ga, Chung gu, Daegu 700 412, Republic of Korea
    Pain 146:114-20. 2009
  10. ncbi request reprint Central cyclooxygenase inhibitors reduced IL-1beta-induced hyperalgesia in temporomandibular joint of freely moving rats
    Dong K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, 188 1 Sam Deok 2 ga, Chung gu, Daegu 700 412, South Korea
    Pain 117:204-13. 2005

Collaborators

  • Juli Valtschanoff
  • Yong Chul Bae
  • Atsushi Yoshida
  • Sung K Kim
  • J S Park
  • W Maixner
  • Tae Geon Kwon
  • Hongjoo J Lee
  • Gwi Y Yang
  • Seung R Han
  • Min K Lee
  • Sang Kyoo Paik
  • Hye J Jeon
  • Yun Sook Kim
  • Jin S Ju
  • Min J Kim
  • Kyoung A Won
  • Min K Park
  • Kui Y Yang
  • Jin Sook Ju
  • Chang Y Jung
  • Min Ji Kim
  • Yi Sul Cho
  • Jin Young Bae
  • Cheil Moon
  • Eun J Lim
  • Masayuki Moritani
  • Min Kyoung Park
  • Chang Young Jung
  • Hyo Sun Choi
  • Koang H Lim
  • Seong Kyu Han
  • Chul Kyu Park
  • Ji Hyeon Song
  • Hyo S Park
  • Hyo S Choi
  • Chang Sik Yang
  • Hae Dong Kim
  • Won S Bae
  • Soon H Nam
  • Hyun J Kim
  • Young J Kim
  • Myung H Ahn
  • Kui Ye Yang
  • Hea Jung Shin
  • Kyoung Ae Won
  • Yoon Yub Park
  • Young M Kang
  • Yoon Y Park
  • Ju H Lee
  • Yi Dai
  • Eloisa Bonfa
  • Jae Youn Son
  • Tae Heon Kim
  • Koichi Noguchi
  • Jae Young Kim
  • Young W Woo
  • Dae Seop Lee
  • Sang Mi Han
  • Young Jae Kim
  • Seong Doo Hong
  • Seung Ro Han
  • Kihwan Kim
  • Seok Bae Oh
  • Jae Gyu Jeon
  • Seog Bae Oh
  • Dong Ho Youn
  • Kee Wan Chang
  • Soo Joung Park
  • Eun Sung Park
  • Sung Jun Jung
  • Joong Soo Kim
  • Seon Ah Park
  • Se Jin Hwang
  • Byung Y Choi
  • Young W Yoon
  • Sukhbir S Mokha
  • Ho Seob Shin
  • Oh W Kwon
  • Hee M Kyung
  • Sang Euk Park
  • Eun Jin Yeo
  • Karp Shik Choi
  • Yoshio Shigenaga
  • Dong H Youn
  • Sang Y Lee
  • Min Kyung Lee
  • Young Kyung Kim
  • Dong Sun Kim
  • Myung Kyw Kwak

Detail Information

Publications41

  1. pmc Functional properties of tooth pulp neurons responding to thermal stimulation
    D K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, 188 1 Sam Deok 2ga, Chung gu, Daegu, Korea
    J Dent Res 91:401-6. 2012
    ....
  2. pmc Progesterone produces antinociceptive and neuroprotective effects in rats with microinjected lysophosphatidic acid in the trigeminal nerve root
    Min Ji Kim
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, South Korea
    Mol Pain 8:16. 2012
    ..In our present study, we studied the role of demyelination of the trigeminal nerve root in the development of prolonged nociceptive behavior in the trigeminal territory...
  3. pmc A novel computerized system for thermal stimulation of tooth in ferrets
    Dong K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook University, 188 1 Sam Deok 2ga, Chung gu, Daegu 700 412, Republic of Korea
    J Neurosci Methods 203:305-10. 2012
    ..This new device can accurately deliver both thermal and electrical stimuli to an intact tooth, which allows an evaluation of the central neural circuits that respond to noxious stimulation of the dentition...
  4. pmc Signal transduction mechanisms underlying group I mGluR-mediated increase in frequency and amplitude of spontaneous EPSCs in the spinal trigeminal subnucleus oralis of the rat
    Ji Hyeon Song
    Department of Oral Physiology, School of Dentistry and Brain Korea 21, Brain Science and Engineering Institute, Kyungpook National University, 188 1 Samduk 2 ga, Chung gu, Daegu 700 412, Korea
    Mol Pain 5:50. 2009
    ....
  5. ncbi request reprint Microinjection of arginine vasopressin into the central nucleus of amygdala suppressed nociceptive jaw opening reflex in freely moving rats
    D K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Taegu, South Korea
    Brain Res Bull 55:117-21. 2001
    ..These results indicate AVP in the central nucleus of amygdala has potent analgesic effects in the orofacial area. The antinociception of central AVP seems to be mediated by opioid and serotonergic pathways...
  6. doi request reprint Compression of the trigeminal ganglion produces prolonged nociceptive behavior in rats
    Dong K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
    Eur J Pain 13:568-75. 2009
    ..These findings suggest that prolonged nociceptive behavior following compression of the trigeminal ganglion may mimic trigeminal neuralgia in this animal model...
  7. pmc Intracisternal administration of NR2 subunit antagonists attenuates the nociceptive behavior and p-p38 MAPK expression produced by compression of the trigeminal nerve root
    Hye J Jeon
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Korea
    Mol Pain 7:46. 2011
    ..We also examined effects of NR2 subunit antagonists on the p-p38 MAPK expression...
  8. ncbi request reprint Blockade of central cyclooxygenase (COX) pathways enhances the cannabinoid-induced antinociceptive effects on inflammatory temporomandibular joint (TMJ) nociception
    Dong K Ahn
    Department of Oral Physiology and BrainKorea21, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
    Pain 132:23-32. 2007
    ..Based on our observations, combined administration of cannabinoids with COX inhibitors may hold a therapeutic promise in the treatment of inflammatory TMJ pain...
  9. doi request reprint Intratrigeminal ganglionic injection of LPA causes neuropathic pain-like behavior and demyelination in rats
    Dong K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, 188 1 Sam Deok 2ga, Chung gu, Daegu 700 412, Republic of Korea
    Pain 146:114-20. 2009
    ..These results thus indicate that a targeted blockade of LPA receptor and Rho kinase pathways are potentially important new treatments for demyelination-induced trigeminal neuralgia-like nociception...
  10. ncbi request reprint Central cyclooxygenase inhibitors reduced IL-1beta-induced hyperalgesia in temporomandibular joint of freely moving rats
    Dong K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, 188 1 Sam Deok 2 ga, Chung gu, Daegu 700 412, South Korea
    Pain 117:204-13. 2005
    ..It is concluded that central acting of COX-3 inhibitors may be of therapeutic value in the treatment of inflammatory pain in TMJ...
  11. ncbi request reprint Intracisternal administration of chemokines facilitated formalin-induced behavioral responses in the orofacial area of freely moving rats
    D K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, 188 1 Sam Deok 2ga, Chung gu, Daegu 700 412, South Korea
    Brain Res Bull 66:50-8. 2005
    ..These results indicate that intracisternal administration of chemokines produce a hyperalgesic response with an orofacial inflammatory pain model and that the IL-8-induced hyperalgesia is mediated by central beta(1)-adrenergic receptor...
  12. ncbi request reprint Effects of TNF-alpha injected intracisternally on the nociceptive jaw-opening reflex and orofacial formalin test in freely moving rats
    Hyo Sun Choi
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, 101 Dong In 2 Ga, Chung gu, Daegu 700 422, South Korea
    Prog Neuropsychopharmacol Biol Psychiatry 27:613-8. 2003
    ..However, the hypo/hyperalgesic response of central Tnf-alpha seems to depend on the orofacial pain model or in a dose-related manner. The hyperalgesic response of central Tnf-alpha seems to be mediated by the IL-1 receptor...
  13. ncbi request reprint Peripheral glutamate receptors participate in interleukin-1beta-induced mechanical allodynia in the orofacial area of rats
    D K Ahn
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, 188 1 Sam Deok 2ga, Chung gu, Daegu 700 412, South Korea
    Neurosci Lett 357:203-6. 2004
    ..These results suggest that peripheral cytokine can produce mechanical allodynia in the orofacial area and that excitatory amino acids can modulate IL-1beta-induced mechanical allodynia via non-NMDA receptors...
  14. ncbi request reprint Intracisternal administration of NR2 antagonists attenuates facial formalin-induced nociceptive behavior in rats
    Gwi Y Yang
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Korea
    J Orofac Pain 24:203-11. 2010
    ..To examine the antinociceptive effects of N-Methyl-D-aspartate (NMDA) receptor NR2 subunit antagonists in a rat model of the facial formalin test...
  15. ncbi request reprint Participation of microglial p38 MAPK in formalin-induced temporomandibular joint nociception in rats
    Kyoung A Won
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Korea
    J Orofac Pain 26:132-41. 2012
    ....
  16. ncbi request reprint Intracisternal administration of mitogen-activated protein kinase inhibitors reduced mechanical allodynia following chronic constriction injury of infraorbital nerve in rats
    Eun J Lim
    Department of Oral Physiology and BrainKorea 21, School of Dentistry, Kyungpook National University, Daegu 700 412, South Korea
    Prog Neuropsychopharmacol Biol Psychiatry 31:1322-9. 2007
    ..Our findings suggest that MAPKs inhibitors have a potential role in treatment for orofacial neuropathic pain...
  17. pmc Low doses of cannabinoids enhance the antinociceptive effects of intracisternally administered mGluRs groups II and III agonists in formalin-induced TMJ nociception in rats
    Min K Lee
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Chung gu, Daegu, Republic of Korea
    Pain 139:367-75. 2008
    ..Potentiating effects of group II or III mGluRs agonists will likely permit the administration of cannabinoids at doses that do not achieve significant accumulation to produce undesirable motor dysfunction...
  18. doi request reprint Peripheral administration of NR2 antagonists attenuates orofacial formalin-induced nociceptive behavior in rats
    Min K Park
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
    Prog Neuropsychopharmacol Biol Psychiatry 35:982-6. 2011
    ..These results indicate that a targeted blockade of peripheral NR2 receptors is a potentially important new method of treating inflammatory pain in the orofacial area...
  19. ncbi request reprint Central metabotropic glutamate receptors differentially participate in interleukin-1beta-induced mechanical allodynia in the orofacial area of conscious rats
    Chang Y Jung
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Korea
    J Pain 7:747-56. 2006
    ..These results suggest that groups I, II, and III mGluRs differentially modulated IL-1beta-induced mechanical allodynia, as well as mirror-image mechanical allodynia, in the orofacial area...
  20. ncbi request reprint Intramuscular administration of morphine reduces mustard-oil-induced craniofacial-muscle pain behavior in lightly anesthetized rats
    Seung R Han
    Department of Oral Physiology and BrainKorea 21, School of Dentistry, Kyungpook National University, 188 1, SamDeok 2ga, Chung gu, Daegu 700 412, Republic of Korea
    Eur J Pain 12:361-70. 2008
    ..Our observations further support the clinical approach of administering opioids in the periphery for the treatment of craniofacial muscle nociception...
  21. pmc Behavioral evidence for the differential regulation of p-p38 MAPK and p-NF-κB in rats with trigeminal neuropathic pain
    Min K Lee
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Korea
    Mol Pain 7:57. 2011
    ....
  22. doi request reprint Intracisternal administration of COX inhibitors attenuates mechanical allodynia following compression of the trigeminal ganglion in rats
    Gwi Y Yang
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
    Prog Neuropsychopharmacol Biol Psychiatry 33:589-95. 2009
    ..Based on these results, the blockade of central COX pathways may comprise a potential new therapeutic tool for the treatment of trigeminal ganglion compression-induced nociception...
  23. ncbi request reprint Participation of peripheral group I and II metabotropic glutamate receptors in the development or maintenance of IL-1beta-induced mechanical allodynia in the orofacial area of conscious rats
    Chang Y Jung
    Department of Oral Physiology and BrainKorea 21, School of Dentistry, Kyungpook University, Daegu, South Korea
    Neurosci Lett 409:173-8. 2006
    ..Based on our observations, the peripheral application of group II mGluR agonists may be of therapeutic value in treating inflammatory pain...
  24. ncbi request reprint Role of peripheral group I and II metabotropic glutamate receptors in IL-1beta-induced mechanical allodynia in the orofacial area of conscious rats
    Dong K Ahn
    Department of Oral Physiology and Neurobiology, School of Dentistry, Kyungpook National University, 188 1 Sam Deok 2 ga, Chung gu, Daegu 700 412, South Korea
    Pain 118:53-60. 2005
    ..Peripheral group I mGluR antagonists blocked the IL-1beta-induced mechanical allodynia, while peripheral group II mGluR agonists produced anti-allodynic effects on IL-1beta-induced mechanical allodynia in the orofacial area of rats...
  25. doi request reprint A novel trigeminal neuropathic pain model: compression of the trigeminal nerve root produces prolonged nociception in rats
    Hye J Jeon
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
    Prog Neuropsychopharmacol Biol Psychiatry 38:149-58. 2012
    ....
  26. doi request reprint Blockade of microglial activation reduces mechanical allodynia in rats with compression of the trigeminal ganglion
    Seung R Han
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu 700 412, Republic of Korea
    Prog Neuropsychopharmacol Biol Psychiatry 36:52-9. 2012
    ....
  27. doi request reprint Expression of transient receptor potential ankyrin 1 (TRPA1) in the rat trigeminal sensory afferents and spinal dorsal horn
    Yun Sook Kim
    Department of Oral Anatomy and Neurobiology, Kyungpook National University, Daegu, Korea
    J Comp Neurol 518:687-98. 2010
    ..These results suggest that TRPA1-dependent orofacial and spinal nociceptive input is processed mainly in the superficial laminae of the Vc and DH in a specific manner and may be processed differently between the rostral TSN and Vc...
  28. ncbi request reprint Quantitative analysis of tooth pulp afferent terminals in the rat brain stem
    Yong Chul Bae
    Department of Oral Anatomy and Neurobiology, School of Dentistry, Kyungpook National University, 188 1, 2 Ga, Samdeok dong, Jung Gu, Daegu 700 412, Korea
    Neuroreport 15:2485-9. 2004
    ..The afferent bouton volume correlated with the number of postsynaptic dendrites and p-endings. These results suggest that pulpal afferent information is regulated in a unique manner in the each trigeminal sensory nucleus...
  29. ncbi request reprint Expression of P2X3 receptor in the trigeminal sensory nuclei of the rat
    Yun Sook Kim
    Department of Oral Anatomy and Neurobiology, BK21, School of Dentistry, Kyungpook National University, Daegu 700 412, Korea
    J Comp Neurol 506:627-39. 2008
    ..These results suggest that orofacial nociceptive information may be transmitted via P2X(3) (+) afferents to all TBSN and that it may be processed differently in different TBSN...
  30. ncbi request reprint GABA and glycine in synaptic microcircuits associated with physiologically characterized primary afferents of cat trigeminal principal nucleus
    Yong Chul Bae
    Department of Oral Anatomy and Neurobiology, School of Dentistry, Kyungpook National University, 700 412 Daegu, Korea
    Exp Brain Res 162:449-57. 2005
    ....
  31. doi request reprint Participation of the central p38 and ERK1/2 pathways in IL-1β-induced sensitization of nociception in rats
    Kui Y Yang
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu 700 412, Republic of Korea
    Prog Neuropsychopharmacol Biol Psychiatry 46:98-104. 2013
    ..Therefore, blockade of the MAPK pathways can be as a potential therapeutic target for the central sensitization of inflammatory pain. ..
  32. ncbi request reprint Developmental changes in distribution of gamma-aminobutyric acid- and glycine-immunoreactive boutons on rat trigeminal motoneurons. I. Jaw-closing motoneurons
    Sang Kyoo Paik
    Department of Oral Anatomy and Neurobiology, School of Dentistry, Brain Korea 21, Kyungpook National University, Daegu 700 412, Korea
    J Comp Neurol 503:779-89. 2007
    ..The postnatal changes revealed in the present study could play an important role in the maturation of the oral motor system...
  33. ncbi request reprint Ultrastructure of jaw muscle spindle afferents within the rat trigeminal mesencephalic nucleus
    Sang Kyoo Paik
    Department of Neurobiology, Graduate School of Dentistry, Kyungpook National University, Daegu, Korea
    Neuroreport 16:1561-4. 2005
    ....
  34. doi request reprint Molecular mechanism for local anesthetic action of eugenol in the rat trigeminal system
    Chul Kyu Park
    National Research Laboratory for Pain, Dental Research Institute and Department of Physiology, School of Dentistry, Seoul National University, 28 2 Yeongeon Dong, Chongno Ku, Seoul 110 749, Republic of Korea
    Pain 144:84-94. 2009
    ..Taken together, these results suggest that eugenol may serve as local anesthetics for other pathological pain conditions in addition to its wide use in dental clinic...
  35. ncbi request reprint Intracisternal NMDA produces analgesia in the orofacial formalin test of freely moving rats
    Ho Jeong Lee
    Department of Oral Physiology and Neurobiology, School of Dentistry, Kyungpook National University, 188 1, Samduck 2 Ga, Chung gu, Daegu 700 412, South Korea
    Prog Neuropsychopharmacol Biol Psychiatry 28:497-503. 2004
    ..The opioid pathway seems to be involved in the NMDA-induced antinociception in the orofacial area...
  36. ncbi request reprint Intracisternal administration of mitogen-activated protein kinase inhibitors reduced IL-1beta-induced mirror-image mechanical allodynia in the orofacial area of rats
    Chang Sik Yang
    Department of Oral Physiology and Neurobiology, School of Dentistry, Kyungpook National University, 188 1 Sam Deok 2ga, Chung gu, Daegu 700 412, Korea
    Neurosci Lett 387:32-7. 2005
    ..These results indicate that central MAPK pathways mediate IL-1beta-induced mirror-image mechanical allodynia in the orofacial area...
  37. doi request reprint Expression of metabotropic glutamate receptor mGluR5 in human dental pulp
    Yun Sook Kim
    Department of Oral Anatomy and Neurobiology, BK21, School of Dentistry, Kyungpook National University, Daegu, Korea
    J Endod 35:690-4. 2009
    ....
  38. ncbi request reprint Peripheral mGluR5 antagonist attenuated craniofacial muscle pain and inflammation but not mGluR1 antagonist in lightly anesthetized rats
    Ho Jeong Lee
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
    Brain Res Bull 70:378-85. 2006
    ..These results indicate that peripheral mGluR5 plays important role in mediating MO-induced nociceptive behaviour and inflammation in the craniofacial muscle...
  39. doi request reprint Functional type I vanilloid receptor expression by substantia gelatinosa neurons of trigeminal subnucleus caudalis in mice
    Seong Kyu Han
    Department of Oral Physiology, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea
    Neurosci Lett 452:228-31. 2009
    ..These results indicate that a sub-population of SG neurons in the Vc express functional TRPV1 receptors, and that capsaicin can directly activate the TRPV1 receptor on the postsynaptic membrane of SG neurons...
  40. ncbi request reprint Interleukin-1 beta injected intracisternally inhibited NMDA-evoked behavioral response in the orofacial area of freely moving rats
    Hae Dong Kim
    Department of Oral Physiology, School of Dentistry, Kyungpook National University, 188 1 Sam Deok 2 ga, Chung gu, Daegu 700 412, South Korea
    Neurosci Lett 360:37-40. 2004
    ..These results suggest that cytokine injected intracisternally seems to produce antinociceptive effects in the NMDA-evoked pain model of the orofacial area and the antinociceptive effect seems to be mediated by an opioid pathway...
  41. doi request reprint Quantitative ultrastructural analysis of the neurofilament 200-positive axons in the rat dental pulp
    Sang Kyoo Paik
    Department of Oral Anatomy and Neurobiology, School of Dentistry, Kyungpook National University, Daegu, Korea
    J Endod 36:1638-42. 2010
    ..In this study, we investigated the morphologic changes of pulpal myelinated axons between their root portion (radicular pulp) and their terminal area (peripheral pulp)...