Evaluation of Periodontal Ligament Distraction Using a Modified Surgical Technique for Retraction of Maxillary Canines

Orthodontic Appliance Complication Clinical Trial

— [PLD]  

Official title:

Evaluation of Periodontal Ligament Distraction Using a Modified Surgical Technique for Retraction of Maxillary Canines in Adult Patients (Split-mouth Randomized Clinical Trial)

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03535285
• Other study ID #: 11111
• Status: Completed
• Phase: N/A
• Start date: June 15, 2017
• Est. completion date: December 15, 2017

Study information

• Verified date: May 2018
• Source: Cairo University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Surgical modification technique try to get bodily movement during upper canine retraction.

Description:

I- Original surgical technique (Liou and Huang technique, 1998) :

On the conventional surgical side, (the control side), the intersepital bone was undermined by two vertical cuts on the mesio-buccal and mesio-palatal line angles of the first premolar socket. They were connected at the base of the socket by an oblique cut. The surgical round bur was held parallel to the long axis of the canine and moved buccolingually, while shaving the interseptal bone buccolingual (back-and-forth) shaving movements were reduced the thickness of the interseptal bone by approximately 1 mm

II- Modified surgical technique:

In the surgical modification side, (the experimental side), intra-alveolar mesio-buccal and mesio-palatal cuts and interseptal bone shaving were done by surgical round bur and copious irrigation, without the oblique cut since it was done blindly in the original surgical technique. A buccal semilunar flap was opened on the apical area of canine-premolar region. The surgical pin helped also in location of the point of initial drilling of the apical horizontal cut from buccal approach, when the surgical pin's socket arm rested on the depth of the socket, the vestibular arm marked the point of access. It also estimated mesiodeistal extension of the apical horizontal cut. The apical horizontal cut was started from the socket apex to half way of the interseptal bone mesiodistally as an extension and for the depth, Mallet and Chisel were used from the cortical bone to reach the mesio-palatal cut. The flap was sutured. This surgical modification step provided more predictability and safer surgery than the blind oblique cut in the original surgical technique.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 10
• Est. completion date: December 15, 2017
• Est. primary completion date: August 15, 2017
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 25 Years

Eligibility

Inclusion Criteria:

1. Orthodontic patients needed extraction of upper first premolars, with age range from 18 - 25 years old.

2. All patients were medically free. (See Appendix II)

3. No previous orthodontic treatment.

4. Adequate oral hygiene and periodontally healthy teeth.

5. The canines were almost leveled and aligned.

6. Maximum anchorage requirements.

7. Healthy canines; no deep carious lesions, no endodontic lesions, no root canal treatment, nor internal or external root resorption.

8. All patients were informed of the procedure and signed the consents.

Exclusion Criteria:

Exclusion Criteria

Subjects were excluded from the study when:

1. They failed to keep several consecutive appointments.

2. Oral hygiene was subjectively judged as deteriorating during the preliminary stages of patient preparation.

3. Compliance with the instructions provided was inadequate.

Related Conditions & MeSH terms

• Orthodontic Appliance Complication

Intervention

Procedure:
• Periodontal ligament distraction
decrease the bony resistant during canine retration

Locations

Country	Name	City	State
Egypt	Cairo University - Orthodontic department	Cairo

Sponsors (1)

Lead Sponsor	Collaborator
Cairo University

Country where clinical trial is conducted

Egypt, 

References & Publications (1)

Liou EJ, Huang CS. Rapid canine retraction through distraction of the periodontal ligament. Am J Orthod Dentofacial Orthop. 1998 Oct;114(4):372-82. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Tipping of the canines	Periapical radiograph using Parallel technique (X-ray sensor , X-ray sensor holder & Potable dental x-ray unit; Panoramic radiograph .	3-4 weeks
Primary	Rate of canines retraction	Digital models using 3shape scanner and Ortho-Analyzer software	3-4 weeks
Primary	Rotation of the canines	Digital models using 3shape scanner and Ortho-Analyzer software	3-4 weeks
Secondary	Amount of anchorage loss	Digital models using 3shape scanner and Ortho-Analyzer software	3-4 weeks
Secondary	Tipping of the molars	Periapical radiograph using Parallel technique (X-ray sensor , X-ray sensor holder & Potable dental x-ray unit; Panoramic radiograph.	3-4 weeks
Secondary	The apical root resorption scores	Periapical radiograph using Parallel technique (x-ray sensor, X-ray sensor holder & Potable dental x-ray unit	3-4 weeks
Secondary	Pulp Vitality	Cold application (Ethyl Chloride)	3-4 weeks
Secondary	Gingival index	Periodontal probe	3-4 weeks
Secondary	Periodontal index	Periodontal probe	3-4 weeks
Secondary	Pain	Numeric rating scale (NRS) for pain	3-4 weeks

External Links

•   periodontal ligament distraction