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Results : Peri-implant biomechanical responses to standard, short-wide, and double mini implants replacing missing molar supporting hybrid ceramic or full-metal crowns under axial and off-axial loading: an in vitro study

Results : Peri-implant biomechanical responses to standard, short-wide, and double mini implants replacing missing molar supporting hybrid ceramic or full-metal crowns under axial and off-axial loading: an in vitro study

author: Lamiaa Said Elfadaly, Lamiaa Sayed Khairallah, Mona Atteya Al Agroudy | publisher: drg. Andreas Tjandra, Sp. Perio, FISID

Results revealed that standard implant showed the statistically significantly highest mean microstrain values (3362.4 ± 757.4 μɛ). Double mini implant showed statistically significantly lower mean microstrain values (801.6 ± 251.4 μɛ), while short-wide implant showed the statistically significantly lowest mean microstrain values (697.6 ± 79.7 μɛ), with a P value <0.001 (Table 1).

The highest statistically significant microstrains were obtained with standard implant supporting Lava Ultimate and metal crowns (3826.5 ± 723.5 μɛ and 2922.5 ± 218.6 μɛ, respectively) while the lowest statistically significant microstrains were obtained with double mini implant supporting metal crown (238.2 ± 32.3 μɛ),with a P value <0.001 (Table 2).

The highest statistically significant microstrains were obtained with standard implant with Lava Ultimate and metal crowns (4286.4 ± 70.9 μɛ and 2414.4 ± 167.6 μɛ, respectively) while the lowest microstrain was obtained with short-wide implant with Lava Ultimate and metal crowns (382.3 ± 41.1 μɛ and 685.8 ± 118.4 μɛ, respectively), with a P value <0.001 (Table 2).

Results revealed that implants supporting Lava Ultimate crowns showed statistically significantly higher mean microstrain values (1927.3 ± 1536.6 μɛ) than those supporting metal crowns (1313.7 ± 973.1 μɛ),with a P value <0.001 (Table 3).

Results revealed that there was no statistically significant difference between axial loading (1608.2 ± 1339.0 μɛ) and off-axial loading (1632.9 ± 1356.4 μɛ) of different implant designs supporting different types of crown materials (Tables 4 and 5).

In standard as well as double mini implants, off-axial loading showed statistically significantly higher mean microstrain values (4286.4 ± 70.9 μɛ and 1137.6 ± 86.9 μɛ, respectively) than axial loading (3826.5 ± 723.5 μɛ and 939.8 ± 78.3 μɛ, respectively). While with short-wide implant, axial loading showed statistically significantly higher mean microstrain values (991.5 ± 101.4 μɛ) than off-axial loading (382.3 ± 41.1 μɛ).

In standard as well as short-wide implants, axial loading showed statistically significantly higher mean microstrain values (2922.5 ± 218.6 μɛ and 730.8 ± 84.9 μɛ, respectively) than off-axial loading (2414.4 ± 167.6 μɛ and 685.8 ± 118.4 μɛ), respectively. While with double mini implants, off-axial loading showed statistically significantly higher mean microstrain value (890.8 ± 118.5 μɛ) than axial loading (238.2 ± 32.3 μɛ).

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