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

Michelle Sendyk

Status: Completed

Conditions: Dentofacial Deformities

Treatments: Procedure: orthodontic decompensation

Study type: Interventional

Funder types: Other

Identifiers

NCT02491619

sendyk001

Details and patient eligibility

About

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.

Full 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.

Enrollment: 40 patients

Sex: All

Ages: 18 to 45 years old

Volunteers: Accepts Healthy Volunteers

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.

Trial design

Primary purpose: Diagnostic

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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40 participants in 1 patient group

Orthodontic decompensation

Experimental group

Description:

Orthodontic decompensation in patients with class III dentofacial deformities

Treatment:

Procedure: orthodontic decompensation