Once the tracing was obtained, the lower plate was removed and the centric lock was placed. This centric lock is an acrylic appliance containing one perforation, which was placed and secured with wax exactly at the vertex of the gothic arch tracing, this is better known as centric relation Figure 7.
Una vez obtenido el trazo se retiró la platina inferior y se colocó el seguro de céntrica, el cual es un aditamento acrílico que contiene una perforación, la cual se colocó y fijó con cera justo en el vértice del trazo del arco gótico, mejor conocido como relación céntrica Figura 7.