Abstract: A dental implement has two moderately flexible hemostat-like handles enabling an operator to apply safely controlled force through finger and thumb grips to bring coplanar bracing and grasping beaks toward one another for gentle removal of crowns or bridges from the mouth of a patient. The bracing beak bearing on the occlusal surface of an underlying tooth is readily modifiable in length or angular position to accommodate a variety of tooth sizes, locations and orientations, and the grasping beak is hollow ground to provide enhanced purchase on a gingival margin or supramarginal notch of a crown. A method of crown or bridge removal utilizing an improved, lightweight, controlled force dental implement employs an iterative sectioning of the crown or bridge during removal.

Abstract: An integrated system which provides an extension of the effective operational area of a single unit ultrasonic pest repeller is disclosed. A master unit produces selectable acoustic waveforms from a speaker and also produces selectable electronic output signals for delivery to a first satellite unit. The first satellite unit produces a similar acoustic repelling waveform and also replicates the master unit electronic output signal for delivery to an identical second satellite unit. Each subsequent satellite unit in a serial chain of satellite units is powered by its own wall plug-in transformer so that the chain may be as long as necessary to accomplish deterrence of roaches, insects including bees, and rodents from the entire area to be protected.