Dental apparatus, namely, intra-oral light systems; Dental dams; Dental device that expands the mouth to improve the field of view inside the mouth, and extracts saliva from the work area inside the mouth; Dental handpieces; Dental instruments for use in dental surgeries; Dental instruments, namely, oral irrigators; Dental instruments, namely, lighting apparatus, operating lights, intra-oral illuminators, dental operating lights, dental suction devices, disposable mouthpieces, mouthpiece lubricant, dry field illuminator, saliva ejectors, saliva suction devices, bite blocks, gingival retractors, tissue retractors, dental tongue and cheek retractors, tongue guards, and dental aspirators; Dental operating lamps; Intra-oral dental light system