A Pilot Study for Thermal Threshold Test of Trigeminal Nerve Injuries

삼차신경손상의 온도역치검사에 대한 예비연구

  • Kim, Mee-Eun (Department of Oral Medicine, Dankook University School of Dentistry)
  • 김미은 (단국대학교 치과대학 구강내과학교실)
  • Received : 2012.11.20
  • Accepted : 2012.12.07
  • Published : 2012.12.30


Trigeminal nerve injuries due to invasive dental procedures such as implant surgery and extraction is one of the most serious issues in dentistry and may provoke medico-legal problems. Thus, for objective and reliable assessment of nerve injury, a need of QST (quantitative sensory testing) is emphasized and thermal threshold test is an essential part of QST, reported to have acceptable reliability in the orofacial region. This pilot study aimed to evaluate thermal thresholds for limited cases of trigeminal nerve injures. The study investigated 18 clinical cases with trigeminal nerve injuries who visited Department of Oral Medicine, Dankook Univeristy Dental Hospital during the period from May 2011 to Oct 2012. Thermal thresholds was measured by Thermal Sensory Analyzer, TSA-II (Medoc, Israel). Their CDT(cold detection threshold) was significantly decreased in the affected sides compared to the unaffected sides. Other parameters such as WDT(warm detection threshold), CPT(cold pain threshold) and HPT(heat pain threshold) did not show statistical difference between the affected and unaffected sides. Further researches are required to compare thermal thresholds relative to types of nerve deficits such as thermal hyper- or hypoesthesia and hyper- or hypoalgesia for larger sample.


Trigeminal nerve injury;QST (quantitative sensory testing);Thermal threshold


Supported by : 단국대학교


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