Brick replacement (including cutout and re-laying) might cost $250 to $350 for a small area with around 1 dozen to 2 dozen bricks. Note that this type of work might have a minimum charge (for example, replacing a couple of bricks might be as expensive as replacing 10 simply to make it worth the company's while).
Mouth irritation. The irritation can be caused by: Biting your cheek, tongue, or lip; Wearing braces or another type of dental apparatus, or having a sharp, broken tooth; Chewing tobacco; Burning one's mouth from hot food or drinks; Having gum disease or other type of mouth infection
This black discoloration of the gums is due to dead tissue, or necrosis. This is a serious health issue, with symptoms that can also include bleeding gums, strong pain, and a foul smelling mouth. Along with improper oral care, the causes of this disease can include stress, smoking, viral infections, and HIV.