Keywords : mini-implant
Comparison of Mesial Molar Migration Associated with Different Depths of Micro-Osteoperforation Assisted Canine Retraction
European Journal of Molecular & Clinical Medicine,
2020, Volume 7, Issue 2, Pages 242-250
Objectives: Micro-osteoperforation is a minimally invasive procedure to accelerate
orthodontic tooth movement. Accelerated orthodontics can sometimes lead to migration of
the anchor teeth. The objective of this randomised control study was to compare the
amount of mesial molar migration between different depths (3 millimetre and 6 millimetre)
of micro-osteoperforation assisted canine retraction.
Methods: Ten adult patients requiring extraction of maxillary first premolar for orthodontic
treatment were enrolled for this split mouth study. The micro-osteoperforation of varying
depth (3 millimetre and 6 millimetre) were made using a mini implant. Direct anchorage was
taken with the help of a mini implant to retract the canine teeth. The patients were divided
into two groups - 3 millimetre depth and 6 millimetre depth of micro-osteoperforation. The
primary outcome was to compare the mean mesial molar migration between the two
groups for three months.
Results: The mean mesial molar migration with 3 millimetre depth of micro osteoperforation
was 0.49 ± 0.20 millimetre and with 6 millimetre depth it was 0.39 ± 0.18 millimetre, which
was statistically insignificant (P >0.350).
Conclusion: Micro-osteoperforations of different depths do not cause a significant
difference in mesial molar migration and are not clinically significant. When it comes to
clinical situations even a slight mesial movement of molar can have high significance in the