TPA test is a special test developed to imitate the movement of the teeth when biting. It consists of two penetration cycles of two centimeters (Figure 4). Several properties can be extracted with this test, but the more representative are hardness, adhesiveness and cohesiveness. Hardness is the maximum force at 2 centimeters depth in the first cycle, and this value should represent the feeling in the mouth when biting the gummy. Adhesiveness is read