الفهرس 
REVIEWOF LITERATUREOnly 14 pages are availabe for public view
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Abstract
This study aimed to compare the effect of two different methods for occlusal analysis and adjustment of implant - supported prosthesis (T-scan and conventional method with articulating papers) using strain gauge analysis.
A patient with completely edentulous mandible opposing dentate maxilla has been selected and four implants have been inserted guided with completely limiting surgical guide in canines and first molars positions.
Two identical mandibular zirconia implant supported prostheses have been constructed using CAD/CAM technology.
Occlusal analysis and adjustments of one zirconia prosthesis has been done using T-scan device and occlusal analysis and adjustment of the other zirconia prosthesis has been done using articulating papers.
Two identical acrylic casts for mandibular arch with implants have been constructed by duplicating the stone cast used for construction of the prostheses.
Strain gauges have been installed mesial and distal to each implant.
Strain gauge analysis was conducted using universal testing machine upon application of bilateral load in between second premolar and first molar in both sides of the prosthesis and unilateral load in between second premolar and first molar of the right side.
The two prostheses on their acrylic casts were applied to cyclic loading on chewing simulator device of 250,000 cycle to simulate year of chewing loading.
Strain gauge analysis was conducted using universal testing machine upon application of bilateral and unilateral load after cyclic loading.
Data was collected, tabulated and statistically analyzed.
The results of this study showed higher micro strains around implants among articulating paper group than T-scan group and it was found that under bilateral loading that difference was insignificant and under unilateral loading was significant.
And it was concluded that:
The use of T-scan device allows for better occlusal stresses distribution in case of implant supported prosthesis as T-scan brings additional extremely valuable information regarding force intensity and occlusal timing and resulting in less stresses transmitted around the supporting dental implants than articulating paper and that difference was statistically significant under unilateral loading and statistically non-significant under bilateral loading.
Articulating paper is still a reliable method for occlusal analysis and adjustment of implant supported prosthesis when they are used correctly.
And was recommended that further in vivo studies should be conducted in order to study the effect of different occlusal analysis and adjustment methods on bone loss around the supporting dental implants of the implant supported prostheses.
CONCLUSION
Within the limitation of this study, it could be concluded that:
Regarding stresses transmitted around implants:
The use of T-scan device allows for better occlusal stresses distribution in case of implant supported prosthesis as T-scan brings additional extremely valuable information regarding force intensity and occlusal timing and resulting in less stresses transmitted around the supporting dental implants than articulating paper and that difference was statistically significant under unilateral loading and statistically non-significant under bilateral loading.
Articulating paper is still a reliable method for occlusal analysis and adjustment of implant supported prosthesis when they are used correctly.
RECOMMENDATION
Further in vivo studies should be conducted in order to study the effect of different occlusal analysis and adjustment methods on bone loss around the supporting dental implants of the implant supported prostheses.