Effects of Flapless Laser Corticotomy in Canine Retraction

Effects of Flapless Laser Corticotomy in Canine Retraction: A Randomized Controlled Trial

This study is conducted to evaluate the effects of flapless laser corticotomy on the rate of canine retraction.

Study Overview

• Status: Completed
• Conditions: Bimaxillary Protrusion; Dental Malocclusion
• Intervention / Treatment: Other: Flapless laser corticotomy; Other: Canine retraction

• Study Type: Interventional
• Enrollment (Actual): 14
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Egypt
  • Ismailia, Egypt
    • Orthodontic department , Faculty of dentistry , Suez Canal University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Full complement of teeth with no congenitally missing teeth except 3rd molars.
• Minor or no crowding cases requires four premolars extraction, canine retraction & maximum anchorage with bimaxillary dentoalveolar protrusion.
• No history of previous orthodontic treatment
• Clinically healthy patients with no history of drug intake and\or no history for any systemic illness, syndromes, craniofacial deformities.
• Vital teeth with normal periodontium and no root resorption.
• Adequate oral hygiene; probing depth values not exceeding 3 mm across the entire dentition; adequate thickness of the attached gingiva (1-2 mm).
• No radiographic evidence of bone loss.

Exclusion Criteria:

• Systemic disease that might have affected bone formation or density, such as osteoporosis, hyperparathyroidism, or vitamin D deficiency.
• Presence of any local or systemic surgical contraindication.
• Extracted or missing permanent tooth/teeth except for 3rd molars.
• Facial asymmetry

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: RANDOMIZED
• Interventional Model: PARALLEL
• Masking: SINGLE

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: Maxillary flapless laser corticotomy group; Flapless laser corticotomy will randomly be assigned to one side of the 14 maxillary arches (experimental side) before canine retraction.	Other: Flapless laser corticotomy; The flapless laser corticotomy will be done by Er, Cr: YSGG laser as a series of circular holes will be made along with the planned position. The depth of laser cutting will be measured and controlled continuously during the operation by the periodontal probe with stopper read to each 3mm depth in addition to a few parts of a millimetre depth into the medullary bone to enhance bleeding. Canine retraction will be started after this procedure.; Other: Canine retraction; canine retraction will be done on 17x25 stst archwire using coil spring adjusted to 150 gm, and miniscrews will be used as an indirect method of anchorage reinforcement
ACTIVE_COMPARATOR: Maxillary control group; Canine retraction will be done on the other side without Laser corticotomy .	Other: Canine retraction; canine retraction will be done on 17x25 stst archwire using coil spring adjusted to 150 gm, and miniscrews will be used as an indirect method of anchorage reinforcement
EXPERIMENTAL: Mandibular flapless laser corticotomy group; Flapless laser corticotomy will randomly be assigned to one side of the 14 mandibular arches (experimental side) before canine retraction.	Other: Flapless laser corticotomy; The flapless laser corticotomy will be done by Er, Cr: YSGG laser as a series of circular holes will be made along with the planned position. The depth of laser cutting will be measured and controlled continuously during the operation by the periodontal probe with stopper read to each 3mm depth in addition to a few parts of a millimetre depth into the medullary bone to enhance bleeding. Canine retraction will be started after this procedure.; Other: Canine retraction; canine retraction will be done on 17x25 stst archwire using coil spring adjusted to 150 gm, and miniscrews will be used as an indirect method of anchorage reinforcement
ACTIVE_COMPARATOR: Mandibular control group; Canine retraction will be done on the other side without Laser corticotomy .	Other: Canine retraction; canine retraction will be done on 17x25 stst archwire using coil spring adjusted to 150 gm, and miniscrews will be used as an indirect method of anchorage reinforcement

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Rate of canine retraction.	distal movement of the canine , measurement unit mm divided by time unit month , using scanned digital models	3 months of canine retraction , distance (mm) moved by the canine distally per month

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Canine rotation	rotation of canine measured in degrees , after 3 months of canine retraction using scanned digital models	3 months, assessed at the beginning of treatment (base line ), and at the end of 3 months of canine retraction
First molar anchorage loss	mesial movement of first molar measured in mm , after 3 months of canine retraction using scanned digital models	3 months, assessed immediately before canine retraction and at the end of 3 months of canine retraction
Root resorption	canine root length measured in mm using cone beam CT scans	3 months , assessed at the beginning of treatment (base line ), and at the end of 3 months of canine retraction
Periodontal condition	assessed using periodontal probe to measure : probing depth in mm	3 months , immediately before canine retraction , and at the end of 3 months of canine retraction
Pulp vitality	assessed using thermal (Cold ) test , by application of dry cotton sprayed with ethyl chloride	3 months, assessed immediately before canine retraction , and at the end of 3 months of canine retraction

Collaborators and Investigators

• Sponsor: Suez Canal University
• Investigators: Principal Investigator: Abubakr R Bakr, Msc Assistan lecturer, Faculty of dentistry , Suez canal university , Ismailia , Egypt

Publications and helpful links

Helpful Links

• Acceleration of canine movement by laser assisted flapless corticotomy [An innovative approach in clinical orthodontics
• Evaluation of piezocision and laser-assisted flapless corticotomy in the acceleration of canine retraction: a randomized controlled trial

Study record dates

Study Major Dates

• Study Start (ACTUAL): June 1, 2018
• Primary Completion (ACTUAL): December 1, 2020
• Study Completion (ACTUAL): December 30, 2020

Study Registration Dates

• First Submitted: October 30, 2020
• First Submitted That Met QC Criteria: November 10, 2020
• First Posted (ACTUAL): November 17, 2020

Study Record Updates

• Last Update Posted (ACTUAL): November 1, 2022
• Last Update Submitted That Met QC Criteria: October 30, 2022
• Last Verified: October 1, 2022

More Information

Terms related to this study

• Keywords: Canine retraction; Flapless laser corticotomy
• Additional Relevant MeSH Terms: Stomatognathic Diseases; Tooth Diseases; Malocclusion
• Other Study ID Numbers: Flapless Laser Corticotomy

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No