Abstract: A simplified detection implement for use in the biological or chemical tests such as medical, pharmaceutical, microbiological, enzymological or analytical tests comprising an adhesive sheet (1) having an adhesion material layer (4), the adhesion sheet (1) also having an area "a" in an optimal shape and an area "b" in an optimal shape with a folding line (6) at the border of areas "a" and "b"; a small test material (3) adhered to the adhesion material layer (4) and being placed approximately at the center of area "a" of the adhesive sheet (1); and a peelable protection sheet (2) covering the surface of the adhesion material layer (4) and having an opening (5) big enough to expose the whole surface of the small test material (3) as well as being so positioned to expose the small test material (3) when areas "a" and "b" are overlapped by folding the adhesive sheet (1) at the folding line (6), and when areas "a" and "b" being overlapped the majority or part of area "a" of the adhesive sheet (1) acts as the adhesi

Abstract: A method and device for rapid diagnosis of dental caries are provided in which a very small amount of saliva to be tested is impregnated into a test piece containing a dry reagent. The test piece is supported on a coating film, whereby the test piece can be maintained with the air intercepted to prevent evaporation of saliva for about 15-30 minutes at a temperature around 20.degree.-37.degree. C., and a color change of the reagent due to the enzymatic reaction of the dental caries-causing microorganism is examined.

Abstract: Dental root canal-treating appliance usable for cleaning pulp cavity and/or for application of medicine in the treatment of the root canal, the appliance being in the form of a slender rod of the diameter larger than 0.3 mm and of the length about 30 mm with appropriate numbers of continuous slits or conduits for absorption of liquid and/or blood in the canal and/or for retention of the medicine, at least one end of the rod, over the length less than about 2 mm from the tip, a thinner end section of the diameter about 0.25 mm being formed so that a shoulder is formed, the shoulder acts as an engagement-edge or stop-edge against the bottom of the canal and apical foramen in the diseased teeth.