Toothing in construction refers to a technique used when joining two walls or surfaces together. It involves creating a series of small projections, known as tooths, along the edge of one surface that fit into corresponding gaps or recesses on the other surface. This method is often used when building brick or stone walls to ensure a strong and stable connection between the two sections.The purpose of toothing is to provide a secure bond between the two surfaces, preventing any movement or separation over time. By interlocking the tooths and recesses, the two surfaces become essentially locked together, creating a seamless transition between the two sections. This technique is particularly useful in situations where a continuous surface is needed, such as in the construction of load-bearing walls or retaining walls