Clinical Trial: Three- Dimensional Evaluation of Accelerated Tooth Movement
Study Status: Active, not recruiting
Recruit Status: Active, not recruiting
Study Type: Interventional
Official Title: Three- Dimensional Evaluation of Accelerated Tooth Movement
Brief Summary: The purpose of this research study is to assess the clinical effectiveness of a minimally invasive alveolar microperforation procedure to achieve accelerated tooth movement in patients undergoing orthodontic treatment for orthognathic surgery. "Accelerated tooth movement" means that Microperforation technique may help complete orthodontic treatment sooner than would be expected in conventional orthodontic treatment
Detailed Summary:
SAMPLE: For this retrospective study, 50 individuals will be selected, with skeletal discrepancies randomly divided into two groups: 1 - accelerated tooth movement technique (ATMT) and 2 - Control .
METHODS: MATERIAL - Orthodontic records done in two times, initial and preoperative; Plaster models of dental extracted jaw every 28 days; Cone Beam Computed tomography done in two times, initial and in the end of extraction space closure.
METHODS: Orthodontic Treatment: to activate extraction space closure, light orthodontic traction will be made in anterior teeth, to maintain therapeutic osteopenia until contact point between the canine the second pre -molar.
Cortical perforations - ATMT Group: Flapless cortical perforations will be made after dental extraction. Surgical protocol will be flapless to preserve periodontal health. After local anesthesia, minimum cortical perforations will be done with manual instrument, between 4-6 mm apical to the contour of free gum between the canine and second pre-molar. Two perforations near each tooth adjacent to the extraction area.
Results: On plaster models - shortest distance between two adjacent teeth to the extraction space will be measure with caliper.
Cone-Beam Computed Tomography: after image acquisition , data will be previously converted to DICOM , to converted to GIPL in ITK-SNAP 3.2 software. In Imagine software voxels will be converted to size 0.5 mm for further construction of virtual three-dimensional models, through segmentation of anatomical structures again in ITK-SNAP 3.2 software. This segmentation will be made by the full selection of all maxilla and mandible anatomically and individually, with the limit all skeletal out
Sponsor: LIANA FATTORI ABATI
Current Primary Outcome:
- Evaluation of velocity rate of anterior retraction in conventional mechanics and accelerated tooth movement technique [ Time Frame: 6 months ]
- Bone demineralization evaluation in extraction area using computerized tomography [ Time Frame: 6 months ]
Original Primary Outcome: Same as current
Current Secondary Outcome:
Original Secondary Outcome:
Information By: University of Sao Paulo
Dates:
Date Received: March 27, 2015
Date Started: April 2015
Date Completion: July 2017
Last Updated: May 10, 2016
Last Verified: May 2016
