European Journal of Molecular & Clinical Medicine

Abstract

Background:Orthodontic forces are often followed by the biological response of dental pulp.
The present study was conducted to assess effect of orthodontic forces on pulp tissues.
Materials & Methods: 58 patients required maxillary first premolar extraction for orthodontic
purposes were treated with a cantilever spring made of 16 × 22 steel wire to apply intrusive
force to upper first premolars (Group I) and the opposing teeth were considered as control
group (Group II).
Results: Inflammation at 7 days in group I was none seen in 60% and mild in 40% 34% and in
group II was none seen in 80% and mild in 20%. At 1 month was none seen in 100% in both
groups. Fibrous tissue at 7 days was none seen in 100% teeth in both groups and at 1 month
was none seen in 40% in group I and 100% in group II and mild in 60% in group II. Vascular
dilatation at 7 days was none seen in 60% and moderate in 40% in group I and none in 55%
and moderate in 45% in group II. Vascular dilatation at 1 month was none in 60% and mild in
40% in both groups. The difference was significant (P< 0.05).
Conclusion: Mild intrusive force in closed apex teeth causes no significant histologic changes
in both groups