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Updated: Jun 10, 2026
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Finite Element Analysis Model for Assessing Expansion Patterns from Surgically Assisted Rapid Palatal Expansion
Published on: October 20, 2023
Pulpal blood flow changes due to rapid maxillary expansion
Hasan Babacan1, Cenk Doruk, A Altug Bicakci
1Department of Orthodontics, Cumhuriyet University, Sivas, Turkey. babacanhasan@yahoo.com
The Angle Orthodontist
|August 4, 2010
Summary
Rapid maxillary expansion (RME) temporarily increases pulpal blood flow (PBF) in anchorage teeth. PBF returns to normal levels during the retention phase, indicating reversible changes.
Area of Science:
- Orthodontics
- Craniofacial development
- Dental physiology
Background:
- Rapid maxillary expansion (RME) is a common orthodontic procedure.
- Understanding the effects of RME forces on dental pulp is crucial for patient safety.
- Anchorage teeth experience significant mechanical stress during RME.
Purpose of the Study:
- To investigate pulpal blood flow (PBF) changes in anchorage teeth during RME.
- To assess the reversibility of PBF alterations post-RME.
Main Methods:
- A cohort of 21 patients (10-15 years) underwent RME with a modified acrylic bonded appliance.
- Laser Doppler flowmetry measured PBF in incisors, canines, and first molars.
- PBF was recorded before, during, and after RME, including a 12-week retention period.
Main Results:
- Pulpal blood flow (PBF) in anchorage teeth doubled within the first week of RME.
- PBF values decreased as the median palatal suture separated.
- PBF tended to return to baseline levels during the retention period.
Conclusions:
- The pulpal blood flow (PBF) changes induced by rapid maxillary expansion (RME) are reversible.
- RME forces cause temporary, non-damaging alterations in dental pulp perfusion.
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