There are several kinds of dental equipments that serve to preventing pain in dentistry. Rear, side, over-the-patient, or over-the-head delivery are among those rear delivery dental systems hailed by manufacturers as containing high delivery features. The Rear Delivery Dental system is one that can hold every instruments in one place, and therefore, provide a bigger space for big instruments in the dental room. Among the delivery systems, this is the cheapest one that can connect to dental tools with ease, and render the equipments away from the sight of the patients and thus, lessening their anxiety and the normal fear with dental procedures. When used with equipments that are within the reach of the dental assistant or what is called a four-handed function, the rear system is highly effective because the assistant can transfer tools, hand pieces and changes burs conveniently and with minimal change of positions.
Usually, rear-delivery systems using a two-handed function drive operators to frequently bend or twist their body to get the tools and equipments from behind the patient’s head, which can cause low-back pain. It is advised that dentists or their assistants should try to reach for instruments with the hand that is closest to it to avoid constant bending of the body thus, avoiding body pains. Among the tools that are used frequently with delivery systems are the dental lights, this is a blue colored light used to harden tooth sealants, and that if operated in a two-handed function, would require a lot of hand movements that is not advisable as discussed above.