Comparison of flapless and flap corticotomy on orthodontic tooth movement in a rat model

Objectives: The objective of my study is to evaluate differences between flapless and flap corticotomy procedures in terms of osteoclast count and amount of orthodontic tooth movement after 2 weeks of orthodontic force application in a rat model.
Methods: Thirty six rats divided into three groups with twelve rats in each group.
Group A: Flap corticotomy(FC)
Group B: Flapless corticotomy(FLC)
Group C: Control (C )

Group A →Administration of GA → Elevation of flap→3Perforations on occlusal surface of bone,5mm mesial to 1st molar →Repositioning of flap by Silk Suture→ Activation of Close coil Spring between maxillary left 1st molar and incisors.

Group B→ Administration of GA→3 perforations on occlusal surface of bone,5mm mesial to 1st molar →Activation Close coil spring between maxillary left 1st molar and incisors.

Group C →Administration of GA → Activation of Close coil sping between maxillary left 1st molar and incisors.
Sacrifice: On day 15 by an over dose of chloroform.
Results: 1.Amount of orthodontic tooth movement is same in flap and flapless corticotomy
2.There is increased number of osteoclast count in flap and flapless corticomtomy

Conclusions: Flapless corticotomy provides less traumatic cortical bone injury for an accclerated orthodontic tooth movement.