- An in vitro experimental model was designed and tested to determine the influence that peri-implant strain may have on the overall crestal bone. Strain gages were attached to polymethylmethacrylate (PMMA) models containing a screw-type root form implant at sites 1 mm from the resin-implant interface. Three different types of crown superstructures (cemented, 1-screw [UCLA] and 2-screw abutment types) were tested. Loading (1 Hz, 200 N load) was performed using a MTS Mechanical Test System. The strain gage data were stored and organized in a computer for statistical treatment. Strains for all abutment types did not exceed the physiological range for modeling and remodeling of cancellous bone, 200-2500 με (microstrain). For approximately one-quarter of the trials, the strain values were less than 200 με the zone for bone atrophy. The mean microstrain obtained was 517.7 με. In conclusion, the peri-implant strain in this in vitro model did not exceed the physiologic range of bone remodeling under axial occlusal loading.
Overview of verb perform
The verb perform has 4 senses (first 4 from tagged texts)
1. (25) perform, execute, do -- (carry out or perform an action; "John did the painting, the
weeding, and he cleaned out the gutters"; "the skater executed a triple pirouette"; "she did a
little dance")
2. (19) perform -- (perform a function; "Who will perform the wedding?")
3. (19) perform -- (give a performance (of something); "Horowitz is performing at Carnegie Hall
tonight"; "We performed a popular Gilbert and Sullivan opera")
4. (2) do, perform -- (get (something) done; "I did my job")
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