Evaluation of the Accuracy of Palatal Orthodontic Miniscrew Placement.

Accuracy of Palatal Orthodontic Miniscrew Placement: Static vs Dynamic Computer-Guided Techniques in a Randomized Clinical Trial.

This randomized clinical trial has the objective of comparing the accuracy of palatal paramedian miniscrew placement using static computer-assisted surgery (s-CAS) and dynamic computer-assisted surgery (d-CAS).

A population of forty subjects requiring palatal paramedian miniscrew insertion is going to be randomized into two groups to receive two miniscrews placed with s-CAS (Group A; n=20 subjects, 40 miniscrews) and d-CAS (Group B; n=20 subjects, 40 miniscrews). Preoperative digital intraoral scans and CBCT images will be used for virtual planning. Group A procedures is going to employ patient-specific surgical guides, while group B procedures is going to be performed with real-time navigation. Immediate postoperative CBCT scans will be superimposed to measure four accuracy parameters: coronal, apical, depth, and angular deviation from the planned position. Statistical analysis will include Student's t-test or Mann-Whitney U test as appropriate.

Inclusion Criteria:

• (1) subjects in late mixed dentition or permanent dentition,
• (2) a need for orthodontic or orthopedic treatment and no previous treatments,
• (3) good oral hygiene,
• (4) absence of acute infection in the oral cavity,
• (5) good general health

Exclusion Criteria:

• (1) syndromic patients
• (2) uncontrolled systemic diseases.