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Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

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Published on: February 23, 2024

Root Surface Changes in Endodontically Treated Teeth following Orthodontic Movement.

Austyn C Grissom¹, Benjamin E Cozad², Scott R Makins¹

¹Department of Endodontics, The University of Texas Health Science Center at Houston School of Dentistry, Houston, Texas.

Journal of Endodontics

|August 14, 2022

Summary

This summary is machine-generated.

Endodontically treated teeth (ETT) show significantly less root resorption after orthodontic tooth movement (OTM) compared to vital pulp teeth (VPT). This suggests ETT may be more resistant to OTM-induced external root resorption.

Keywords:

Cone-beam computed tomography endodontic treatment external root resorption orthodontic treatment root resorption

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Area of Science:

Orthodontics
Endodontics
Dental Imaging

Background:

Orthodontic tooth movement (OTM) can cause external root resorption, often considered unavoidable.
Endodontically treated teeth (ETT) and vital pulp teeth (VPT) may respond differently to OTM-induced root resorption.

Purpose of the Study:

To compare the changes in surface area and volume of ETT versus VPT after OTM.
To determine if endodontic treatment influences susceptibility to root resorption during OTM.

Main Methods:

A retrospective analysis of 76 teeth (38 ETT, 38 VPT) undergoing OTM.
Cone-beam computed tomographic (CBCT) imaging was used at baseline (T1) and post-OTM (T2).
Tooth surface area and volume were calculated using 3D mesh models derived from CBCT data.

Main Results:

VPT exhibited significantly greater average changes in surface area (19.95 mm² vs 13.01 mm²) and volume (32.44 mm³ vs 22.48 mm³) compared to ETT.
Percent changes in surface area (3.38% vs 2.09%) and volume (4.10% vs 2.62%) were also significantly higher in VPT.
Statistical analysis confirmed these differences (P < .05).

Conclusions:

Endodontically treated teeth demonstrate reduced susceptibility to external root resorption following orthodontic tooth movement.
The findings suggest that ETT may offer a protective effect against OTM-induced root structure loss compared to vital teeth.