A system for heating and extruding dental material from a compule, the system comprising a combination heater assembly (405) made of positive temperature coefficient (PTC) material such as barium titanate ceramic that may be self-regulating. A dental compule (403) may be generally cylindrical, or another shape, and may hold a dental (e.g. composite) material. The compule may be made from conventional plastic or thermally conductive plastic. A compule may also be made from electrically conductive plastic that is self-heating when an electric current is passed through the compule. A compule may be generally cylindrical and include an electrically conductive polymer that may exhibit PTC characteristics while generating heat when electric current is applied to the polymer through two flat contact areas each disposed along one portion of the generally cylindrical compule (403), an orifice or opening (412) positioned at one end of the compule, an inner chamber； and extrudable dental material held within the inner chamber.
