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A Correlation Analysis between Arch Width and Molar Inclination Using Cone-Beam Computed Tomography Transverse
Farraj Albalawi1,2, Reem Alwakeel2,3,4, Samah Alfuriji1,2
1Preventive Dental Science Department, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh 11426, Saudi Arabia.
Diagnostics (Basel, Switzerland)
|June 10, 2023
Summary
Cone-beam computed tomography (CBCT) reveals narrow maxillae lead to increased dental compensation. Maxillary molars tip buccally to compensate for reduced arch width, informing expansion treatment.
Area of Science:
- Orthodontics
- Craniofacial analysis
- Dental imaging
Background:
- Cone-beam computed tomography (CBCT) offers advanced 3D analysis in orthodontics.
- Understanding craniofacial skeletal architecture is crucial for effective treatment planning.
Purpose of the Study:
- To investigate the correlation between transverse basal arch discrepancy and dental compensation using CBCT width analysis.
- To analyze dental compensation patterns in normal versus narrow maxillae.
Main Methods:
- Retrospective observational study of 88 CBCT scans (2014-2020).
- Utilized Planmeca Romexis x-ray system data from three centers.
- Analyzed dental compensation and performed Pearson correlation between molar inclination and width difference.
Main Results:
- Significant differences in maxillary molar compensation between normal and narrow maxillae observed.
- Narrow maxilla group exhibited higher dental compensation (164.73 ± 10.15).
- Significant negative correlation (r = -0.37) found between width difference and maxillary molar inclination, with buccal tipping.
Conclusions:
- Maxillary molars exhibit buccal tipping as a compensatory mechanism for reduced arch width.
- Findings are vital for determining appropriate maxillary expansion, considering molar inclination in treatment.
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