Palatal Mucosa Thickness
Conditions
Brief summary
This study assesses the potential statistical correlation between vertical facial pattern and palatal mucosa thickness. Data collection : dicom files (CBCT) merged with STL files of n patients for soft tissue visualization Aim: to volumetrically assess (with CBCT) the palatal mucosa thickness in different vertical facial types to aid clinicians in the planning and placement of orthodontic miniscrews. Hypothesis : There is no significant difference between the 3 groups studied (i.e. no correlation between palatal mucosa thickness and vertical facial typology).
Detailed description
Study rationale : The use of palatal miniscrew offers the possibility to improve the effectiveness of orthodontic expansion devices. Palatal expanders supported by miniscrew can be applied with different clinical protocols. The palatal mucosa thickness affects the choice of miniscrew length. Justification for overlaying on STL files: When the lingual dorsum and palatal mucosa are in mutual contact during CBCT examination, it is not possible to distinguish one from the other during subsequent imaging evaluation. Various methods have been proposed to overcome these limitations, including the superimposition of the dicom and stl files: this methodology enables the profile of the palatal mucosa to be distinctly identified in all the analyzed scans.
Interventions
OTHERMeasurement of palatal mucosa thickness on CBCT scans
Measurement of palatal mucosa thickness on CBCT scans in hypodovergent, normodivergent and hyperdivergent patients
Sponsors
Central Hospital, Nancy, France
Study design
Observational model
CASE_CONTROL
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
ALL
Age
16 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Full permanent dentition (except for third molar) * Normal craniofacial development * Aged \> 16 years * Complete skeletal maturity (assessed by the cervical vertebral maturation method) * Absence of previous orthodontic or orthognatic surgical treatment
Exclusion criteria
* Absence of any tooth other than the third molar * Maxillary impacted tooth * CBCT scans taken without teeth in occlusion/open bite * Distorting pathologies of the facial mass affecting the palatal zone * Periodontal or endodontic diseases affecting the bone * Presence of metallic artifact * History of previous orthognatic or orthodontic surgeries
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Palatal mucosa thickness | Baseline | In milimetres |
Outcome results
None listed