cone beam computed tomographyphotogrammetric scan using elite scanner (shining 3d)
cone beam computed tomography: -Implant marginal bone height changes will be measured by cone beam radiograph after one and two years of loading
photogrammetric scan using elite scanner (shining 3d): implant placement accuracy will be evaluated using photogrammetric scan after implant insertion
Study summary
compare fully versus partially guided all on four implants placement immediately loaded by maxillary and mandibular screw retained overdentures: A radiographic and photogrammetric measurement of accuracy of implant position and passivity of superstructures.
The measurements will be done as follows:
1. Photogrammetric scan immediately after implant instalments to measure 3D accuracy of implant position and Passivity of super structure
2. Cone beam X ray to measure the implant marginal bone height changes.
3. Implant marginal soft tissue evaluations including pocket probing depth, plaque and gingival indices. Evaluation will be done immediately, one and two years after loading.
Eligibility
Sex
ALL
Min age
—
Max age
—
Healthy volunteers
Accepted
Inclusion Criteria:
* Completely healed residual alveolar ridges
* Angle's class I maxillo-mandibular relationship.
* Sufficient mandibular and maxillary restorative spaces, at least 15mm evaluated by recording a tentative jaw relation.
* Adequate bone height in the premaxilla area, and the anterior mandibular area. - This will be evaluated radiographically
Exclusion Criteria:
* Systemic disorders affecting bone (such as uncontrolled diabetes mellitus and osteoporosis).
* Local or general contraindication for surgical procedures.
* History of chemotherapy or radiation therapy to the head and neck area.
* Poor neuromuscular co-ordination.
* TMJ dysfunction and parafunctional habits
Primary outcome measure(s)
accuracy of implant insertion — immediately after implant insertion accuracy of implant position will be measured immediately after implant insertion by using photogrammetry scan for implants with multi-unit abutments intra-orally and on the model created from the planned implants and fitting surface of surgical guide, superimposition of both scans will be done using geomagic software to determine deviation in implant positions between both scans (Presurgical and post surgical) for both groups and calculated in fractions of millimeters, the value of deviation found in both semi-guided and fully-guided groups will be compared.
Trial sites (1)
Facility
City
Region
Status
Mansoura University, Faculty of Dentistry, mansoura, egypt
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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