PATHOLOGICAL PROCESS 相对完整的表层 (surface zone) 暗层dark zone) 病损体部body of the lesion) 透明层(translucent zone) enamel caries
Protective Factors PATHOLOGICAL PROCESS 相对完整的表层 (surface zone) (surface zone) (surface zone) (surface zone) 病损体部(body of the lesion) of the lesion) of the lesion) of the lesion) 暗层(dark zone) (dark zone) (dark zone) (dark zone) 透明层(translucent (translucent (translucent (translucent zone) enamel caries
6 phases of the process of caries(1) The tooth surface is demineralized. The translucent zone is formed under the surface at first. Clinical exam and radiography show no change in the tooth
6 phases of the process of caries(1) • The tooth surface is demineralized. • The translucent zone is formed under the surface at first. • Clinical exam and radiography show no change in the tooth
6 phases of the process of caries(2) Demineralization goes on.The translucent zone becomes larger. Remineralization takes place in some area. The dark zone is formed
6 phases of the process of caries(2) • Demineralization goes on. The translucent zone becomes larger. • Remineralization takes place in some area. • The dark zone is formed
6 phases of the process of caries(3) Demineralization exceeds remineralization. The body of the lesion is formed. ·Ve can see a chalky white spot on the tooth surface
6 phases of the process of caries(3) • Demineralization exceeds remineralization. • The body of the lesion is formed. • We can see a chalky white spot on the tooth surface
6 phases of the process of caries(4) The pigment from the oral cavity goes into the lesion. The white spot becomes brown or black
6 phases of the process of caries(4) • The pigment from the oral cavity goes into the lesion. • The white spot becomes brown or black