Neuropeptides including CGRP and substance P mediate orthodontic pain through TRPV1-expressing nociceptors in the periodontium, and these same nerve fibers may also regulate the bone remodeling that enables tooth movement.
Dual neuroskeletal roleCGRP and substance P from periodontal nociceptors both drive orthodontic pain AND may regulate the bone remodeling needed for tooth movement — a potential therapeutic target
What the researchers found
TRPV1-expressing periodontal nociceptors release neuropeptides (CGRP, substance P) that mediate orthodontic pain and may also regulate alveolar bone remodeling during tooth movement, creating a dual neuroskeletal interaction.
Why it matters
Orthodontic pain affects millions of patients and is the leading cause of treatment discontinuation. Understanding that neuropeptides both cause the pain and influence tooth movement means we could develop targeted therapies that reduce pain while preserving — or even accelerating — the desired tooth movement.
The numbers in context
Neuropeptides including CGRP and substance P identified as dual mediators of orthodontic pain and bone remodeling.
How the study worked
Review article synthesizing research on nociceptor mechanisms in orthodontic pain, covering molecular transducers (TRPV1, TRPA1, ASIC3, P2X3), neuropeptide signaling (CGRP, substance P), and the potential neuroskeletal interactions between pain-sensing nerves and bone remodeling.
Who was studied
Review of neuropeptide mechanisms in orthodontic pain and bone remodeling
What this study cannot tell us
Review article — most evidence comes from animal models. The relationship between nociceptors and bone remodeling in orthodontics is hypothesized but not yet proven in clinical settings. Blocking neuropeptides to reduce pain could potentially slow tooth movement if the neuroskeletal coupling is confirmed. Individual pain sensitivity varies widely.
How to read the evidence
Moderate — well-reasoned review synthesizing established nociceptor biology with emerging evidence on neuroskeletal interactions in orthodontics. Many hypotheses remain to be tested clinically.
When this study was published
Published in 2024, presenting a current perspective on molecular mechanisms of orthodontic pain and neuroskeletal interactions.
The bigger picture
Anti-CGRP antibodies have revolutionized migraine treatment, and this review suggests a parallel opportunity in dentistry. If CGRP and substance P both drive orthodontic pain and modulate bone remodeling, targeting these neuropeptides could fundamentally change orthodontic practice — reducing pain, improving patient compliance, and potentially accelerating treatment. The concept of 'no pain, big gain' could become achievable through neuropeptide-targeted interventions.
Questions still open
- Would anti-CGRP or anti-substance P treatments reduce orthodontic pain without slowing tooth movement?
- Could neuropeptide modulation be used to both reduce pain AND accelerate tooth movement simultaneously?
- Why do some patients experience significantly more orthodontic pain than others — is it related to neuropeptide expression levels?
Common questions
Why do braces hurt so much?
Could migraine drugs help with orthodontic pain?
Read the original research
Nociceptor mechanisms underlying pain and bone remodeling via orthodontic forces: toward no pain, big gain.
Frontiers in pain research (Lausanne, Switzerland), 5, 1365194
Citation
Wang, Sheng; Ko, Ching-Chang; Chung, Man-Kyo. (2024). Nociceptor mechanisms underlying pain and bone remodeling via orthodontic forces: toward no pain, big gain.. Frontiers in pain research (Lausanne, Switzerland), 5, 1365194. https://doi.org/10.3389/fpain.2024.1365194