Malocclusion
Conditions
Interventions
Device
Forty-two individuals with clinical diagnosis of transverse maxillary deficiency will be randomly divided into two groups. Twenty-two patients will be treated with Haas expander (Group 1- G1) and 22
Sponsors
Universidade Federal de Santa Catarina
Universidade Federal de Santa Catarina
Eligibility
Inclusion criteria
Inclusion criteria: Skeletal maxillary atresia with indication of maxillary expansion; age between 11 to 15 years; permanent dentition with first premolars completely erupted; balanced facial profile (straight); good general and dental health.
Exclusion criteria
Exclusion criteria: Presence of periodontal disease; endodontic problem in any upper teeth ; canine, or upper premolar or molar agenesis; previous orthodontic treatment; presence of cleft palates or syndromes.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Alterations in the dental inclinations of the molars and premolars will be analyzed by the angle formed by a line through the palatine root apex and the tip of the mesio-palatal cusp of the first molars and the palatal cusp of the first premolars and a vertical line parallel to the plane. median sagittal area, considering a difference of at least two degrees. | — |
Secondary
| Measure | Time frame |
|---|---|
| Expected Outcome 1. Transverse changes in the maxilla will be analyzed by the distance in millimeters between the reference points in each hemiarch, following the anatomical references, considering a difference of at least 1 millimeter.;Expected Outcome 2. Measurements of alveolar bone thickness of the posterior superior teeth will be performed in an axial section parallel to the palatal plane, at the level of the right first permanent molar furcation. The buccal alveolar thickness (BAT) and palatal alveolar thickness (PAT) of the canines, first and second premolars and first molars will be measured. BAT measurement will be performed from the outermost portion of the alveolar cortex to the most buccal portion of the root image in the canines, first and second premolars, and to the most buccal portion of the mesiobuccal and distovestibular root of the first molars. The PAT will be measured from the outermost portion of the palatal alveolar cortex to the most lingual portion of the root image in the canines, first and second premolars, and to the most lingual portion of the palatal root of the first molars. The differences will be considered from 0.5mm. | — |
Countries
Brazil
Contacts
Public ContactDaniela G. Thys Cavallazzi
Universidade Federal de Santa Catarina
Outcome results
None listed