About this trial
Subperiosteal implants were first introduced in 1940 and then used worldwide for the treatment of edentulous maxilla or mandible with advanced bone atrophy.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
A 3D image of an edentulous maxilla bone derived from a computed tomography scan of an adult patient.
Maxilla with Cawood and Howell class 4 or 5 classification
Disqualifiers
A 2D image of an edentulous maxilla bone
A non atrophied maxilla
Trial population
This is a three dimentional finite element analysis
Trial design
Other
Other
Treatments tested in this trial
Subperiosteal implant framework
Other interventionA 3D image of an edentulous maxilla bone will be derived from a computed tomography scan of an adult patient and saved as "stl" data. The solid geometry of the maxilla, including the cortical and spongious bone, was rebuilt from the "stl" data into the Digital Imaging and Communications in Medicine (DICOM) format with 3D-Doctor (Able Software Corp., MA, USA). With the Boolean method, force loading will be achieved between prosthetic parts, subperiosteal implant screws and bone tissues
Treatment groups
Trial outcomes
Primary outcomes
bone loss under the implants
amount of bone loss which appears on a modeling process, The modeling process will be completed using a three-dimensional modeling software. A three-dimensional mesh consisting of 556,365 nodes and 2972,897 elements with VRMesh Studio (VirtualGrid Inc, Bellevue City, WA, USA) will used in the program.
Sponsors and contacts
Click on the lead sponsor to view all of their trials.