Correlation Between Dental Inclination and Bone Thickness in Patients With Class III Dentofacial Deformities
This trial is active, not recruiting.
|Start date||July 2015|
|End date||October 2016|
|Trial size||40 participants|
|Trial identifier||NCT02491619, sendyk001|
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.
|Intervention model||single group assignment|
Change in tooth inclination and bone thickness after tooth decompensation
time frame: 12 months after the begginning of orthodontic treatment, prior to orthognathic surgery
Male or female participants from 18 years up to 45 years old.
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.
|Official title||Correlation Between Buccolingual Dental Inclination and Bone Thickness After Orthodontic Decompensation in Patients With Class III Dentofacial Deformities|
|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.|
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