Evaluation of Root Resorption During the Correction of Deep Bite With the Help of Laser Irradiation

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-11-15

Study Completion Date

2022-07-20

Brief Summary

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This study aims to investigate the effectiveness of low-level laser in reducing the resorption of the roots of the upper incisors. Participants will be recruited from patients who will attend the Department of Orthodontics and Dentofacial Orthopaedics at Damascus University. The study sample will consist of 30 patients with a deep bite who will be randomly distributed equally into two groups, 15 patients in each group, average age: 22.37±3.38 years. Mini-implants will apply between the roots of the maxillary central and lateral incisor at both sides with a loading force of 40 g on each end by using a nickel-titanium spring extending from the head of the mini-implants to a wire welded to it with two hooks. A low-level laser (Ga-Al-As) will be used with 808 nm wavelength in continuous mode, 250 milli-Watt power output, 4 Joules/point energy density, 16 s per point in the experimental group. It will be applied on the day of intrusion, then on days 3,7, and 14 of the first month, and then every 15 days starting from the second month until the end of the intrusion. In addition to adjusting the force gauge every 4 weeks until the end of the intrusion stage and reaching normal coverage will be activated every 4 weeks in both groups until normal overbite was reached.

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Detailed Description

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Several studies have indicated the effectiveness of the LLLT in accelerating orthodontic movement, but studies that have evaluated the role of this laser in reducing the risk of OIIRR have been limited. Moreover, the effects of laser in reducing root resorption have been studied with different types of orthodontic movements such as en masse anterior retraction, canine retraction, and tilting of the premolars before extraction, but they have not been studied with the intrusion movement

Conditions

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Deep Overbite

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Control group

The strength of the nickel-titanium coil will be adjusted every 4 weeks to the required strength of 40 g on each end until reaching normal coverage

Group Type ACTIVE_COMPARATOR

Traditional orthodontic treatment

Intervention Type DEVICE

As for patients in the control group, the strength of the nickel-titanium coil will be adjusted every 4 weeks to the required strength of 40 g on each end until reaching normal coverage.

Low-Level Laser Therapy group

In the experimental group (LLLT), where a (Ga-Al-As) diode laser, will be used with 808 nm wavelength in continuous mode, 250 milli-Watt power output, 4 Joules/point energy density, 16 s per point. In addition to adjusting the force gauge every 4 weeks until the end of the intrusion stage and reaching normal coverage

Group Type EXPERIMENTAL

Low-Level Laser

Intervention Type DEVICE

The laser will be applied to the root of each of the upper incisors in 8 points (4 points from the labial and 4 points from the palatine), and the head of the device will be placed from the labial side of the root in the center of each of the apical and middle thirds and the mesial and distal of the cervical third in contact with Oral mucosa perpendicular to the root axis, with the application of the laser beam for (16) seconds at one point, and the laser will be re-applied in the same way from the palatal side of the root. So that it was the total application time is (128) seconds for one tooth.

The laser will be applied on the day the upper incisor intrusion started (T1), then on days (3, 7, and 14) of the first month, and starting from the second month, the laser will be applied every (15) day, in addition to adjusting the force gauge every 4 weeks until the end of intrusion stage (T2) and reaching normal coverage.

Interventions

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Traditional orthodontic treatment

As for patients in the control group, the strength of the nickel-titanium coil will be adjusted every 4 weeks to the required strength of 40 g on each end until reaching normal coverage.

Intervention Type DEVICE

Low-Level Laser

The laser will be applied to the root of each of the upper incisors in 8 points (4 points from the labial and 4 points from the palatine), and the head of the device will be placed from the labial side of the root in the center of each of the apical and middle thirds and the mesial and distal of the cervical third in contact with Oral mucosa perpendicular to the root axis, with the application of the laser beam for (16) seconds at one point, and the laser will be re-applied in the same way from the palatal side of the root. So that it was the total application time is (128) seconds for one tooth.

The laser will be applied on the day the upper incisor intrusion started (T1), then on days (3, 7, and 14) of the first month, and starting from the second month, the laser will be applied every (15) day, in addition to adjusting the force gauge every 4 weeks until the end of intrusion stage (T2) and reaching normal coverage.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

1. overbite \> 4 mm
2. Class I or II molar and canine relationship malocclusion
3. maxillary anterior crowding \< 2 mm
4. maxillary incisors positioned below the functional occlusal plane
5. incisor display of 2-3 mm or more at rest
6. the facial growth pattern is normal or horizontal.

Exclusion Criteria

1. the maxillary incisors had a history of any trauma or endodontic treatment
2. increased inclination of the maxillary incisors towards the labial
3. the subject had any systemic disease
4. the patient exhibited poor oral hygiene

Minimum Eligible Age

18 Years

Maximum Eligible Age

30 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No