Correlation Between Dental Inclination and Bone Thickness in Patients With Class III Dentofacial Deformities

December 10, 2017 updated by: Michelle Sendyk

Correlation Between Buccolingual Dental Inclination and Bone Thickness After Orthodontic Decompensation in Patients With Class III Dentofacial Deformities

The correlation between tooth inclination and bone thickness and the comparison between thickness measurements and buccolingual inclination before and after dental decompensation will be evaluated through tridimensional images in individuals with class III dentofacial deformities.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Class III dentofacial deformity is associated with important functional, psychological and aesthetic changes and thus individuals affected by this type of deformity are motivated in seeking treatment. The sample will consist of three-dimensional images of 40 individuals with Class III dentofacial deformities. From these images generated by CBCT scans, the buccolingual inclinations of all teeth and maxillo-mandibular alveolar bone thickness in three different heights will be measured (3, 6 and 8 mm) from the cementoenamel junction through the Dolphin 3D® program. The 3D scans of the sample will be evaluated in two stages: the initial stage and after dental decompensation at the end of pre-surgical orthodontic phase. Pearson correlation test will be used to verify the relationship between tooth inclination and bone thickness. The thickness measurements and buccolingual inclination will be compared between treatment times (initial and pre-surgical) using paired Student t-test.

Study Type

Interventional

Enrollment (Actual)

40

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Brazil
    • SP
      • Sao Paulo, SP, Brazil
        • University of Sao Paulo

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 45 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Brazilian nationality;
  • Class III malocclusion, for molars and canines;
  • Concave facial profile;
  • Indications for orthodontic-surgical treatment;
  • Craniofacial growth finalized ;
  • Absence of tooth extractions;
  • No local and / or general contraindications for surgery;
  • No previous orthodontic-surgical treatment;
  • Good dental and periodontal conditions.

Exclusion Criteria:

  • Facial asymmetry;
  • Absence of teeth (except the third molars);
  • Periodontal disease and vertical or horizontal bone resorption;
  • Extensive metal restorations;
  • Previous orthodontic treatment;
  • Root anomalies.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Orthodontic decompensation
Orthodontic decompensation in patients with class III dentofacial deformities
Procedure: orthodontic decompensation
Evaluation of the correlation between bone thickness and tooth inclination previously and after orthodontic treatment of decompensation due to orthognathic surgery

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Change in tooth inclination and bone thickness after tooth decompensation
Time Frame: 12 months after the begginning of orthodontic treatment, prior to orthognathic surgery
12 months after the begginning of orthodontic treatment, prior to orthognathic surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Michelle Sendyk

Investigators

  • Study Chair: José Rino Neto, PhD, University of Sao Paulo

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

July 1, 2015

Primary Completion (Actual)

December 1, 2017

Study Completion (Actual)

December 1, 2017

Study Registration Dates

First Submitted

June 24, 2015

First Submitted That Met QC Criteria

July 2, 2015

First Posted (Estimate)

July 8, 2015

Study Record Updates

Last Update Posted (Actual)

December 12, 2017

Last Update Submitted That Met QC Criteria

December 10, 2017

Last Verified

December 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • sendyk001

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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