Microanalysis of Changes in 3D Geometry of Orthodontic Mini-implants

The orthodontic mini-implants used in the study are temporary screws inserted into the bone to provide anchorage for challenging tooth movements that could not be carried out using the patient's own teeth. They are made of a medical grade titanium alloy (Ti6Al4Va), with a length of 8 mm and a diameter of 1.3 mm. After the completion of the treatment phase requiring specific anchorage, they are removed and disposed of as a medical waste. The insertion of the mini-screw is conditioned by the individual treatment plan and the treatment protocol would not differ from the standard treatment. The aim of the project is to analyze changes in the macrogeometry and wear of the surfaces of retrieved orthodontic micro-implants after their clinical use. Upon completion of clinical tasks, the mini-screws will be removed and retrieved for laboratory phase of the study. The laboratory phase will consist of: microscopic and profilometric examinations, as well as scanning before insertion and after removal of the mini-implants, and a clinical phase: the use of previously scanned and sterilized mini-implants in patients participating in the study.

NCT Number	NCT06743360
Lead Sponsor	Pomeranian Medical University Szczecin Collaborators: Katarzyna Stefaniak Private Practice
Conditions	Malocclusions, Malocclusion, Angle Class I, Malocclusion, Angle Class II
Enrollment	20 participants
Start Date	2024-10-10
Primary Completion	2025-02-01 (estimated)
Study Completion	2025-03-01 (estimated)
Updated on ClinicalTrials.gov	2024-12-24