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Sutures of the Skull

Sutures of the Skull

The human skull is composed of several bones that come together to protect the brain and support the structures of the face. The junctions where these bones meet are called sutures.
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...

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New Classification of Midpalatine Suture Maturation Using Cone Beam Computed Tomographic Study.

Cristalle Soman¹, Reem Khaled Alshammari², Nawal Mohammad AlMutairi²

¹Department of OMFS & Diagnostic Sciences, College of Medicine and Dentistry, Riyadh Elm University, Riyadh 11681, Saudi Arabia.

Diagnostics (Basel, Switzerland)

|November 27, 2025

Summary

A new classification system for midpalatine suture staging using Cone Beam Computed Tomography (CBCT) enhances the detection of skeletal maturity. This improved staging increases the success rate of non-surgical maxillary expansion in orthodontic treatment.

Keywords:

cone beam computed tomography cranial sutures midpalatine suture palatal expansion palatine bone rapid maxillary expansion

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Area of Science:

Dentistry
Orthodontics
Radiology

Background:

Midpalatine suture assessment is crucial for correcting maxillary transverse discrepancies.
Cone Beam Computed Tomography (CBCT) is widely used for evaluating skeletal maturity via midpalatine suture staging (MPS).
Existing MPS classifications have limitations, necessitating refined staging methods.

Purpose of the Study:

To develop a novel, comprehensive subcategorization system for midpalatine suture maturation staging using CBCT.
To enhance the accuracy of skeletal maturity assessment for orthodontic treatment planning.

Main Methods:

Retrospective analysis of 168 CBCT scans.
Subcategorization of a standard 2013 MPS classification into Pattern A and Pattern B.
Comparison of the new classification with the standard reference.

Main Results:

Both standard and new classifications show age as a predictable variable for midpalatine suture maturation.
The new classification demonstrated increased sensitivity in detecting MPS maturity.

Conclusions:

The refined MPS classification improves the prediction of non-surgical maxillary expansion success.
CBCT-based individualized suture staging is recommended for personalized diagnosis and optimal orthodontic treatment planning.