Radiographic comparison of apical root resorption after orthodontic treatment between bidimensional and Roth...

Area of Science:

• Orthodontics
• Dental Research
• Biomaterials

Background:

• Root resorption is a common side effect of orthodontic treatment.
• Comparing different orthodontic techniques is crucial for optimizing treatment outcomes and minimizing adverse effects.
• Understanding the prevalence and severity of root resorption associated with specific techniques is essential for patient care.

Purpose of the Study:

• To compare the incidence and amount of root resorption following orthodontic treatment using the bidimensional and Roth straight-wire techniques.
• To evaluate the overall prevalence of root resorption in a sample of non-extraction treated Angle Class II division 1 malocclusions.

Main Methods:

• A sample of 40 non-extraction Angle Class II division 1 patients (aged 11-18) were treated.
• Twenty patients received treatment with the bidimensional technique, and 20 with the 0.018-inch Roth straight-wire technique.
• Pre- and post-treatment periapical radiographs were used to measure root lengths of maxillary incisors.

Main Results:

• Both bidimensional and Roth straight-wire techniques showed significant root resorption (1.11 ± 0.17 and 0.86 ± 0.05, respectively).
• No significant difference in the mean amount of root shortening was observed between the two techniques (P = 0.63).
• Root resorption was absent in 32.5% of teeth, mild in 56.2%, moderate in 8.8%, and severe in 2.5%.

Conclusions:

• The bidimensional technique does not increase the amount of root resorption compared to the Roth straight-wire technique.
• The prevalence and degree of root resorption were comparable between the bidimensional and Roth straight-wire techniques.
• Both techniques are viable options for non-extraction treatment of Angle Class II division 1 malocclusions with similar risks of root resorption.