Miller 2009.

Trial name or title	Study of the efficacy of skeletal anchorage (mini‐screw) compared to dental anchorage during orthodontic treatment
Methods	Trial design: single‐centre RCT (parallel group) Location: Bretonneau Hospital, Paris, France Recruitment period: not known Funding source: Assistance Publique ‐ Hôpitaux de Paris, DENTOS Source of participants: patients attending clinic Study duration: 4 years, 4 months estimated total study duration Time points at which follow‐up are reported: before and after space closure
Participants	100 participants in total, males and females accepted, age range from 12‐50 years Inclusion criteria: aged from 12 to 50 years old patient needs orthodontic treatment with extraction of 2 maxillary bicuspids patient has signed informed consent Exclusion criteria: patient younger than 12 and older than 50 years old patient without social security affiliation patient with a medical condition that indicates against orthodontic treatment
Interventions	Comparison 1: Mini‐screw implant Comparison 2: Dental anchorage
Outcomes	Amount of extraction space closure after 8 months of treatment Angle classification of the canines Parallelism of the dental axis on 3D CT scans Treatment efficacy Patient satisfaction
Starting date	February 2009
Contact information	Bretonneau Hospital, Paris, France, 75018
Notes