For those with sensitive teeth and bleeding gum, brushing and cleaning interdental spaces can create pain and discomfort. Tooth sensitivity occurs as a result of receding gum and exposed dentin. Many factors lead to sensitivity. Brushing too hard, over time, can damage enamel and cause recession of gum. The build-up of plaque, may cause gum disease, leading to bleeding gum and sensitivity. Pick a soft brush with fine bristles to reduce abrasive on tooth structure and to cleanse the gum line better. A toothbrush with compact brush head allows you to brush hard-to-reach areas, like back teeth, which can be easily missed while brushing with normal-sized brush head.