DOH253 Lecture Notes - Lecture 12: Restorative Dentistry, Ameloblast, Dej
Document Summary
The cells are parallel and there is strong tight junctional complexes between the cells to prevent the effect forming enamel (terminal bar web) Each cell has a process called tommes process. Each has 2 faces (sides) thus the orientation of the triangles that are perpendicular to the faces gives different angles thus the prismatic structure. This prism means that it is in the secretory stage thus active. The solid colour is the forming enamel called immature enamel at this stage. It is a 3 stage process of enamel formation: deposition of organic matrix - framework of enamel done layer by layer. in length. Each 4-4. 5 micrometer composed of proteins and carbohydrates. We can"t have 100% since the organic matrix occupies some space. In order to have this we must absorb the organic matrix and in the space left, the cells will deposit the extra minerals to mineralise up to 96% mineralised (mature enamel by weight) and 89-90% by volume.
