A method of adjusting the temperature properties of piezoelectric devices and oscillation circuits which have a third-order function temperature property and the point of inflection of the third-order function temperature property outside the normal usage temperature range. A cup attached to the handpiece is provided for receiving the gas and exposing a selected area of the tooth to the gas. Inside of the ink cartridge, a preventive member is vertically provided. A method of surgery using the attachment includes providing a frame structure defining proximal and distal portions, the proximal portion being repositionably mountable to a base, supporting an attachment on the stabilizing member and engaging heart tissue with the attachment such that the tissue bulges outward to better present the tissue for surgery.