Two Low-level Laser Irradiation Protocols on the Rate of Canine Retraction

Hams Hamed Abdelrahman

Status

Unknown

Conditions

Malocclusion

Treatments

Other: low-level laser therapy applied on days 0, 3,7,14 & every 2 weeks

Other: low-level laser therapy applied every 3 weeks

Study type

Interventional

Funder types

Other

Identifiers

NCT04926389

Canine retraction 2020

Details and patient eligibility

About

Several methods aiming at the acceleration of orthodontic tooth movement have been proposed, including low-level laser therapy (LLLT), which showed promising results. However, the frequency of patient recall has been one of its major drawbacks.

Full description

A randomized controlled clinical trial will be conducted to address the aim of the study. Sixteen patients will be recruited, requiring the therapeutic extraction of the maxillary 1st premolars, with subsequent canine retraction into the extraction space. The sample will be randomly divided into 2 equal groups, each including 8 subjects.

In Group A, one side of the maxillary arch will randomly receive LLLT on days 0, 3, 7, 14, and every 2 weeks thereafter, while in Group B, one side will also be randomly chosen to receive LLLT every 3 weeks. The contralateral sides of both groups will serve as the controls. The LLLT applied will be Diode laser emitting infrared radiation at wavelength of 980 nm, in a continuous mode.

Canine retraction in both groups will be carried out bilaterally using nickel-titanium closed-coil spring, delivering 150 grams of force, and the rate of tooth movement will be checked every 3 weeks, over a period of 3 months. Other variables will be also examined including, interleukin-1β level in the gingival crevicular fluid, root resorption, and molar anchorage loss.

Enrollment

16 estimated patients

Sex

All

Ages

15 to 25 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Malocclusion requires at least the extraction of maxillary first premolars, followed by canine retraction into the extraction site.
Normal shape and structure of the maxillary canines, with no history of root canal treatment.
Patients with good oral hygiene, and a healthy periodontal condition.

Exclusion criteria

Patients who underwent previous orthodontic treatment.
Patients currently receiving drug therapy that may affect orthodontic tooth movement, e.g. hormonal therapy and corticosteroids.
Patients with chronic diseases that may affect the rate of tooth movement.
Pregnancy and lactation