Study between anb angle and Wits appraisal in cone beam computed tomography (CBCT)

Area of Science:

• Dentistry
• Orthodontics
• Cephalometry

Background:

• Accurate diagnosis of anteroposterior maxillo-mandibular discrepancies is crucial in orthodontics.
• Cone-beam computed tomography (CBCT) offers advanced 3D imaging for cephalometric analysis.
• The Angle of the Norma Basalis (ANB) and Wits appraisal are common measurements for assessing skeletal relationships.

Purpose of the Study:

• To analyze Angle of the Norma Basalis (ANB) and Wits appraisal values.
• To investigate correlations between ANB, Wits, and other cephalometric measurements.
• To evaluate their combined utility in diagnosing anteroposterior maxillo-mandibular relationships using CBCT.

Main Methods:

• Ninety patients with prior CBCT scans were analyzed.
• A 3D cephalometric analysis was performed using InVivo5 software.
• Pearson's correlation coefficient was used to assess relationships between measurements.

Main Results:

• ANB and Wits classifications for anteroposterior relationships showed discrepancies, particularly in Class I and Class II.
• A significant correlation was found between ANB and Wits (r=0.262), occlusal plane angle and ANB (r=0.426), and mandibular plane angle and Wits (r=0.242).
• No correlation was observed between ANB or Wits and patient age.

Conclusions:

• Both ANB and Wits measurements are essential for a comprehensive diagnosis of the maxillo-mandibular relationship.
• Integrating both ANB and Wits in 3D cephalometric analyses enhances diagnostic precision.
• This approach aids in better treatment planning for orthodontic and surgical interventions.