Investigation of the structure of intact enamel and the enamel affected by systemic hypoplasia using electron microscopy
This is a study of extracted orthodontic indications of right and left first permanent premolars (4.4 and 3.4 teeth) in patients aged 14 years with a systematic enamel hypoplasia. In order to study the surface of the intact and the affected areas of enamel on the teeth of the spray particles of gold and platinum. After that, the teeth were studied using a two-beam analysis system FEI Helios 650 Nanolab (U.S.) for scanning electron microscopy. Study of different areas of enamel surface and subsurface in the transverse and longitudinal sections of the studied teeth at intact enamel borders hypoplastic spots erosion showed that the enamel prisms of hypoplastic spots and erosion differ in qualitative and quantitative terms. With the violation form enamel prisms with hypoplasia and shortening of 2.5 times the surface layer of the enamel. In the erosion of enamel defects have different depths.