Abstract: This disclosure proposes a technique for finding and treating areas of tooth decay primarily below the gum line using protuberances provided in a length of modified dental floss. The length of modified dental floss is provided with protuberances which can be used to detect areas of tooth decay by the roughness and sensitivity felt as the length of modified dental floss glides over the area of tooth decay. Specially designed posts are used to anchor the ends of the length of modified dental floss in order to be able to apply greater force during flossing, and free up fingers that would normally have the dental floss wrapped around them, to guide the floss to the right locations for flossing.

Abstract: This disclosure proposes a technique for finding and treating areas of tooth decay primarily below the gum line using protuberances provided in a length of modified dental floss. The length of modified dental floss is provided with protuberances which can be used to detect areas of tooth decay by the roughness and sensitivity felt as the length of modified dental floss glides over the area of tooth decay. Specially designed posts are used to anchor the ends of the length of modified dental floss in order to be able to apply greater force during flossing, and free up fingers that would normally have the dental floss wrapped around them, to guide the floss to the right locations for flossing.

Abstract: This disclosure provides a method for efficiently converting heat energy to readily usable energy with maximized thermal efficiency. Maximized thermal efficiency is obtained by the use of heat regeneration and working gas processing steps that optimize the heat regeneration, so that any heat that is supplied to the working gas from the external heat source is supplied at the maximum temperature, and any heat that is rejected from the working gas to an external heat sinks is rejected at the minimum temperature, given the constraints of the the heat source and heat sink temperatures. Two basic designs of engines are proposed. One of the basic designs uses pairs of heat regenerators, and would be suitable for stationary power generation applications. The other basic design uses single heat regenerators and would be suited for motive power applications. Both piston cylinder and turbocompressor driven engine applications can be used in each of the two basic designs of engines.