Various invasive and non-invasive methods have been used for measuring primary implant stability. Periotest damping device, and resonance frequency analysis (RFA) with the Osstell device have been classified as non-invasive methods.In this clinical randomized trial, a general correlation of primary implant stability was recorded using both the Osstell and Periotest device at the day of implant installation and 3 month after healing for the submerged and non submerged loading protocols. The gender of included patients were investigated in the correlation of the two devices.Eighty completely edentulous patients were recruited, all patients were of age ranging from 50 to 69 years old. A single implant was installed in the midline of the completely edentulous mandible to improve retention of their lower denture. After implant installation, Implant Stability was recorded using the osstel and periotest device. Patients were then randomized into two groups using sealed envelopes; Submerged (S), and Non Submerged (NS). All ISQ and PTV were recorded at the day of implant installation, and 3 month after healing for both groups.When the ISQ was correlated to the (PTV), there was a moderate negative statistically significant correlation between the two readings, correlation coefficient= -0.466, p=0.000 . There tends to be a weak negative correlation between the two devices in the male group ,while there tends to be no correlation between the two devices in the female group After 3 month healing, there was no statistically significant correlation of the readings with in both groups ;NS and S ; Correlation coefficient =-0.014, -0.430, p=0.942, 0.052 respectively. A strong negative statistically significant correlation between the two devices for the female group for both, NS and the S group. While there was no statistically significant correlation with in the male group for both groups.The present study concluded that there is a significant negative correlation between the two devices when recording primary implant stability, while this significance is lost after 3 month of loading when recording secondary implant stability. Gender would affect the implant stability recording, this would mainly due to the difference in bone density between the male and female group.
Correlation of Implant Stability between two Non-Invasive Methods Using Submerged and non submerged healing protocols; A randomized clinical trail
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Marwa Abdel AAL, Mahmoud El Far, Nora Mohamed Sheta, Ahmed Fayyad, Eman El Desouky, nouran Mahmoud Abdel nabi; Correlation of Implant Stability between two Non-Invasive Methods Using Submerged and non submerged healing protocols; A randomized clinical trail. J Oral Implantol doi: https://doi.org/10.1563/aaid-joi-D-19-00130
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