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Purpose <p>The pathogenic mechanisms and variations in individual pain susceptibility underlying neuropathic pain associated with dental implant surgery have not been fully elucidated, and objective evaluation methods for such pain remain unestablished. The objective of this study was to identify exploratory trends in subclinical sensory changes by evaluating changes in pain thresholds following dental implant surgery.</p> Methods <p>The subjects included 76 outpatients who visited the Department of Fixed Prosthodontics at Osaka University Dental Hospital for dental implant surgery. Pain thresholds were recorded before and after surgery within the regions innervated by the second and third divisions of the trigeminal nerve and the upper cervical plexus. Measurements were performed using a computer-controlled thermal sensory analyzer (PATHWAY, Medoc Co. Ltd).</p> Results <p>The decline of the pain threshold event detected by the thermal stimulation on the operating side occurred in 28.57–48.57%, 10.48–25.90%, 1.40–10.36% and 0.09–1.38% of subjects at 1, 2, 4, and 12 weeks post-surgery, respectively.</p> Conclusions <p>This prospective cohort study evaluated the impact of dental implant surgery on pain thresholds. The findings suggest that a significant proportion of patients may experience transient post-surgical sensory changes, characterized by a decline in their pain threshold following surgery, even in the absence of subjective pain complaints.</p>

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Exploratory investigation of pain threshold in the facial and cervical regions following dental implant surgery

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月24日

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  • Kiyomi Uehashi,
  • Shoichi Ishigaki,
  • Ryota Takaoka,
  • Daisuke Moriguchi,
  • Hirofumi Yatani

摘要

Purpose

The pathogenic mechanisms and variations in individual pain susceptibility underlying neuropathic pain associated with dental implant surgery have not been fully elucidated, and objective evaluation methods for such pain remain unestablished. The objective of this study was to identify exploratory trends in subclinical sensory changes by evaluating changes in pain thresholds following dental implant surgery.

Methods

The subjects included 76 outpatients who visited the Department of Fixed Prosthodontics at Osaka University Dental Hospital for dental implant surgery. Pain thresholds were recorded before and after surgery within the regions innervated by the second and third divisions of the trigeminal nerve and the upper cervical plexus. Measurements were performed using a computer-controlled thermal sensory analyzer (PATHWAY, Medoc Co. Ltd).

Results

The decline of the pain threshold event detected by the thermal stimulation on the operating side occurred in 28.57–48.57%, 10.48–25.90%, 1.40–10.36% and 0.09–1.38% of subjects at 1, 2, 4, and 12 weeks post-surgery, respectively.

Conclusions

This prospective cohort study evaluated the impact of dental implant surgery on pain thresholds. The findings suggest that a significant proportion of patients may experience transient post-surgical sensory changes, characterized by a decline in their pain threshold following surgery, even in the absence of subjective pain complaints.