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

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

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT02491619

Enrollment

Registered

2015-07-08

Start date

2015-07-31

Completion date

2017-12-31

Last updated

2017-12-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dentofacial Deformities

Keywords

Angle class III, tomography, tooth inclination, bone thickness

Brief summary

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.

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.

Interventions

PROCEDUREorthodontic decompensation

Evaluation of the correlation between bone thickness and tooth inclination previously and after orthodontic treatment of decompensation due to orthognathic surgery

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

DIAGNOSTIC

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

18 Years to 45 Years

Healthy volunteers

Yes

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.

Design outcomes

Primary

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

Countries

Brazil

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026