Accuracy of Digital Models Using Open-access Software Programs

Study Overview
=================
Brief Summary
-----------------
Background: Despite the clear drive toward digital model transformation, there are limitations to some paid software necessary for digital model production. The aim of the study is to compare the accuracy of open-access software against paid software regarding the segmentation process to produce a digital model. Four groups of software programs will be assessed regarding their accuracy in the segmentation process to produce a digital dental model. The reference models will be scanned by a desktop scanner and will be set as the gold standard. The same models will be scanned by the same CBCT machine. The obtained DICOM data will be converted into STL files by four different software programs.

Official Title
-----------------
Trueness and Precision of Digital Models Obtained From Different Open-access Software Programs

Conditions
-----------------
Accuracy of Digital Dental Model

Intervention / Treatment
-----------------
* Other: Bluesky software
* Other: 3D slicer software
* Other: OnDemand software
* Other: Mimics software


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Complete records of patients (upper and lower). Intact models with complete anatomy. Complete permanent dentition Exclusion Criteria: Broken or damaged stone models. Models of patients with orthodontic appliances or dental prosthesis

Ages Eligible for Study
-----------------
Minimum Age: 20 Years
Maximum Age: 30 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
No

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Open access software 1<br> | Other: Bluesky software<br>* Dental stone casts will be scanned with a desktop scanner and then STL files will be exported. Virtual 3D surface models will be obtained by Bluesky software.<br>|
| Open access software 2<br> | Other: 3D slicer software<br>* Dental stone casts will be scanned with a desktop scanner and then STL files will be exported. Virtual 3D surface models will be obtained by 3D slicer software.<br>|
| Non open access paid software 1<br> | Other: OnDemand software<br>* Dental stone casts will be scanned with a desktop scanner and then STL files will be exported. Virtual 3D surface models will be obtained by OnDemand software.<br>|
| Non open access paid software 2<br> | Other: Mimics software<br>* Dental stone casts will be scanned with a desktop scanner and then STL files will be exported. Virtual 3D surface models will be obtained by Mimics software.<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Deviation in digital models measurments | 3D deviation analysis will be done between the digital models of each participant and the reference model by reverse engineering 3-Matics software (Materialise NV, Belgium, Version 11.0). Each two STL models will be imported into the software. The mean deviation difference (measured in mm) will be calculated by 'Analyse' tool present in the software | through study completion, up to 3 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Linear measurements | Each digital model will be measured in the three dimensions: Anteroposterior (the canine cusp tip to the mesiobuccal cusp tip of the first molar on the right side). Transverse (inter-canine and inter-molar). Vertical (the canine height, which is measured from the cusp tip to the gingival margin of the right canine by a line parallel to the long axis of the tooth). | through study completion, up to 3 months | 
| Teeth crown width | For all teeth (twelve measurements for each arch), first molar to first molar, in both arches, the tooth measurements will include the mesiodistal widths from point contact to point contact. | through study completion, up to 3 months |