A method of forming a head plate having one or more tooth cleaning elements, the method comprising: a) forming a mounting plate, the mounting plate comprising a first section and a second section, the first section separated from the second section by a first gap, a first groove formed into a front surface of the second section that extends from the first gap to a cleaning element location of the second section; b) positioning the mounting plate in a mold cavity so that a first cleaning element chamber of the mold cavity is aligned with the cleaning element location; c) injecting a molten resilient material into the mold cavity so that the molten resilient material: flows into the first gap; flows into the first groove; and flows into the first cleaning element chamber; and d) cooling to solidify the molten resilient material, wherein the solidified resilient material in the first gap forms a first resilient hinge that couples the first and second sections of the mounting plate together while the solidified resilient material in the first cleaning element chamber forms a first resilient tooth cleaning element extending from the second section of the mounting plate at the cleaning element location and protruding beyond the front surface of the second section, wherein step a) further comprises forming the mounting plate so that the second section comprises an island in the cleaning element location; wherein step b) comprises positioning the mounting plate in the mold cavity so that the first cleaning element chamber of the mold cavity and a second cleaning element chamber of the mold cavity are aligned with the cleaning element location and adjacent the island; wherein step c) further comprises injecting the molten resilient material into the mold cavity so that the molten resilient material also flows into the second cleaning element chamber, and wherein step d) further comprises the solidified resilient material in the second cleaning element chamber forming a second resilient tooth cleaning element extending from the second section of the mounting plate at the cleaning element location, the first and second resilient tooth cleaning elements located adjacent the island, and the island surrounded by a loop of the integral mass of solidified resilient material. a) forming a mounting plate, the mounting plate comprising a first section and a second section, the first section separated from the second section by a first gap, a first groove formed into a front surface of the second section that extends from the first gap to a cleaning element location of the second section; b) positioning the mounting plate in a mold cavity so that a first cleaning element chamber of the mold cavity is aligned with the cleaning element location; c) injecting a molten resilient material into the mold cavity so that the molten resilient material: flows into the first gap; flows into the first groove; and flows into the first cleaning element chamber; and d) cooling to solidify the molten resilient material, wherein the solidified resilient material in the first gap forms a first resilient hinge that couples the first and second sections of the mounting plate together while the solidified resilient material in the first cleaning element chamber forms a first resilient tooth cleaning element extending from the second section of the mounting plate at the cleaning element location and protruding beyond the front surface of the second section,