Purpose: To evaluate the effect of low-intensity pulsed ultrasound(LIPUS) combined with triamcinolone acetonide on oral mucosal ulcer in syrian hamster in several ways, including healing time, contents of superoxide dismutase(SOD)and malondialdehyde (MDA).
Methods: Sixty syrian hamsters were randomly divided into 5 groups, including a baseline group (containing a normal baseline group and a model baseline group, n=6) and 4 experimental groups (LIPUS processing and drug use group, LIPUS group, drug group and a normal control group without any processing, n=12). Four experimental groups and model baseline group were given oxygen free radicals to model the oral mucosal ulcer.
Telescopic overdentures supported by the combination of natural teeth and implants have been thought a valuable treatment for the severely compromised partially edentulous patients. But the combination of teeth and implants involves highly complex biomechanical problems. This study is to evaluate biomechanical behaviors of the natural abutment teeth with the treatment of combined tooth-implant supported telescopic crown prostheses in mandible through 3D FEA.
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