The objective of this clinical trial study is to evaluate the ability of mini-screw as a micro-perforation device to accelerate canine retraction in orthodontic patients. Additionally, we will investigate the pain and discomfort of the patient during the study.
The study is double blind randomized clinical trial with split mouth design.
Settings and conduct:
Both maxillary canines will be retracted, and movement will be measured every 28 days in three intervals. Pain and discomfort will be monitored with a visual analogue scale.
Participants/Inclusion and exclusion criteria:
Class II division 1 or Class I bimaxillary dentoalveolar protrusion
Mild or no crowding
No previous orthodontic treatment
No history of systemic disease
Good oral hygiene
No radiographic evidence of bone loss
No history of periodontal therapy and active periodontal disease
Probing depth less than 4 mm across the entire dentition
No gingivitis or active carious lesion
Gingival index and plaque index value less than 1
Ten patients with Class II Division 1 or Class I bimaxillary protrusion malocclusion will be selected. Four month after first premolar extraction, just before canine retraction micro-osteoperforation will be created in experimental side of each patient. The control side will not receive micro-osteoperforations.
Main outcome variables:
rate of canine movement
pain and discomfort after micro-osteoperforation