Abstract
BackgroundIn dental implantology, the development of stability over time is a well-investigated topic. In case of orthodontic mini-implants, quantitative data for long-term stability is not available yet. This study aims to clinically investigate the long-term stability of mini-implants inserted in the midsagittal suture of the anterior palate. Moreover, the influence of the length of implants was elucidated. The stability of 2 × 9 and 2 × 11 mm mini-implants after orthodontic treatment (9 mm, 2.84 years ± 1.25 years; 11 mm, 3.17 years ± 0.96 years) was assessed by resonance frequency analysis (RFA). The obtained long-term pieces of data were compared with each other (9 mm vs 11 mm), as well as with the data from the matched early stability groups, to assess the initial and early secondary stability after the insertion from previous clinical trials.ResultsFor both lengths, the long-term stability (2 × 9 mm, 25.12 ± 7.11, n = 21; 2 × 11 mm, 24.39 ± 5.82, n = 18) was significantly lower than primary stability (2 × 9 mm, 36.14 ± 6.08, n = 19; 2 × 11 mm, 33.35 ± 3.53, n = 20). The differences within the groups disappeared over the initial healing period: after 4 weeks for the 2 × 9 mm implants and after 2 weeks for the 2 × 11 mm implants. Also, the 2 × 9 mm and 2 × 11 mm implants showed comparable long-term stability values.ConclusionThe stability of midpalatal mini-implants does not change in the long term after the initial healing period. Moreover, 2 × 9 mm mini-implants seem to be appropriate for orthodontic anchorage, as the stability of 2 × 11 mm implants is not higher. Therefore, owing to lower invasiveness, 2 × 9 mm implants should be preferred.
Highlights
In dental implantology, the development of stability over time is a well-investigated topic
Subjects and methods The stability of 9-mm and 11-mm mini-implants after orthodontic treatment was assessed by resonance frequency analysis (RFA)
The mean treatment duration was 3.17 ± 0.96 years in the Long-term group 11-mm implants (LT11) group compared with 2.84 ± 1.25 years in the Long-term group 9-mm implants (LT9) group (Table 1)
Summary
The development of stability over time is a well-investigated topic. This study aims to clinically investigate the long-term stability of mini-implants inserted in the midsagittal suture of the anterior palate. The stability of 2 × 9 and 2 × 11 mm miniimplants after orthodontic treatment (9 mm, 2.84 years ± 1.25 years; 11 mm, 3.17 years ± 0.96 years) was assessed by resonance frequency analysis (RFA). Skeletal anchorage gained popularity for expanding the biomechanical modalities of orthodontic treatment and expanding the scope of orthopaedic treatment. The gold standard technique to measure dental implant stability, namely resonance frequency analysis (RFA), was successfully transferred and established to measure the stability of mini-implants [13, 17,18,19,20,21,22]. The long-term stability of miniimplants using RFA had not been studied in vivo
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
