Is the computed tomography exam important for planning mini-implant installation?

Area of Science:

• Dentistry
• Orthodontics
• Radiology

Background:

• Mini-implants offer temporary anchorage for orthodontic tooth movement.
• Accurate planning is crucial for effective mini-implant utilization.
• Radiographic imaging plays a key role in pre-surgical assessment.

Purpose of the Study:

• To compare periapical radiography and computed tomography (CT) for planning mini-implant placement.
• To evaluate the impact of CT on orthodontists' decisions regarding mini-implant dimensions and insertion sites.

Main Methods:

• Ten orthodontists analyzed periapical radiographs and CT scans of premolar and molar regions.
• Evaluations were conducted at multiple time points (T1, T2, T3, T4).
• Statistical analysis included Student's t-test, Wilcoxon test, and kappa concordance test.

Main Results:

• High intra- and inter-examiner agreement was observed for mini-implant planning.
• No statistically significant differences were found in the chosen diameter and length of mini-implants.
• Over 20% of treatment plans involved changes in insertion site when CT scans were used in conjunction with radiographs.

Conclusions:

• Associating CT scans with radiography frequently leads orthodontists to modify mini-implant insertion points.
• CT imaging provides valuable spatial information for optimizing mini-implant placement.
• This improved planning can enhance the predictability and success of orthodontic anchorage procedures.