Maxillary Transverse Deficit: A Retrospective Study of Two Biologically Oriented Devices through a Digital Workflow

Area of Science:

• Orthodontics
• Craniofacial Development
• Biomaterials

Background:

• Maxillary transverse deficiency is a common orthodontic concern.
• Biologically oriented devices offer alternatives for maxillary expansion.
• Comparing the efficacy of different expanders is crucial for treatment planning.

Purpose of the Study:

• To compare the efficiency of the Rapid Palatal Expander (RPE) and Nitanium Palatal Expander-2 (NPE-2) in achieving maxillary expansion.
• To evaluate differences in anterior arch width, posterior arch width, palatal height, and palatal surface area between the two devices.

Main Methods:

• Retrospective study involving 36 subjects divided into two equal groups.
• Digital 3D scanning of maxillary dental arches using Trios 3 shape®.
• Analysis of 3D models using Autodesk Fusion 360® and Meshmixer®.
• Statistical analysis including D'Agostino-Pearson normality test, non-parametric t-test, and parametric t-test using Prism® software.

Main Results:

• Both RPE and NPE-2 groups showed significant increases in palatal width and surface area.
• No significant changes in palatal height were observed in either group.
• No significant differences were found between RPE and NPE-2 in the variation of anterior arch width, posterior arch width, or palatal height.

Conclusions:

• Both Rapid Palatal Expander (RPE) and Nitanium Palatal Expander-2 (NPE-2) are equally effective in correcting transverse defects.
• The choice between RPE and NPE-2 may not significantly impact key maxillary expansion outcomes.
• Further research could explore long-term stability and patient-reported outcomes.