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Efficiency of two protocols for maxillary molar intrusion with mini-implants.
Juliana Volpato Curi Paccini1, Flávio Augusto Cotrim-Ferreira1, Flávio Vellini Ferreira1
1Department of Orthodontics, Universidade Cidade de São Paulo, São Paulo, São Paulo, Brazil.
Dental Press Journal of Orthodontics
|July 14, 2016
Summary
This study found that using either two or three mini-implants yields similar efficiency for maxillary molar intrusion. Both protocols effectively intrude extruded maxillary molars in adult patients.
Area of Science:
- Orthodontics
- Dental Implantology
Background:
- Maxillary molar intrusion is a common orthodontic procedure.
- Extruded molars require efficient correction for optimal treatment outcomes.
Purpose of the Study:
- To compare the efficiency of orthodontic intrusion protocols for maxillary molars using two versus three mini-implants.
- To evaluate the effectiveness of different mini-implant configurations in molar intrusion.
Main Methods:
- Twenty-five adult subjects with extruded maxillary first molars were included.
- Subjects were divided into two groups: two mini-implants (n=15) and three mini-implants (n=10).
- Lateral cephalograms were analyzed pre- and post-treatment to assess intrusion changes.
Main Results:
- No statistically significant difference in intrusion efficiency was observed between the two- and three-mini-implant groups.
- Both protocols demonstrated comparable effectiveness in intruding maxillary molars.
Conclusions:
- Maxillary molar intrusion can be achieved with similar efficiency using either two or three mini-implants.
- The number of mini-implants (two or three) does not impact the efficiency of extruding maxillary molar intrusion.

