MILD
MODERATE SEVERE
Treatment
Prevention Aesthetic restoration
complex resin restoration full crown restoration Professional bleaching
4th section Dentinogenesis imperfecta
Etiology
Excessive fluoride contact
Clinical Features
•white to brown pigmentation •permanent tooth common deciduous tooth rare •excessive wear and fracturing of the
• bilateral symmetric distribution
Treatment
• Caries prevention • Aesthetically restoration • Functionally restoration
Dental fluorosis
A condition of enamel hypoplasia characterized by white chalky spots or brown staining and pitting of teeth due to an increased level of fluoride affecting enamel matrix formation and calcification by impairment of ameloblastic function.
牙体硬组织非龋性疾病
Noncaries Teeth Disease
Noncaries Teeth Disease
Disorder of development Teeth injury Teeth chronic trauma Dentin hypersensitivity
Disorder of development
Tetracycline stained teeth
Congenital syphilitic teeth
Hereditary dentinogenesis imperfecta
Principe of treatment
1st section Enamel hypoplasia
Enamel hypoplasia is a defect in tooth enamel that results in less quantity of enamel than normal.
A hereditary defect consisting of opalescent teeth composed of irregularly formed and undermineralized dentin that obliterates the coronal and root pulpal chambers
• abnormal structure • abnormal morphology • abnormal number of tooth • abnormal sequence of eruption
Abnormal Structure
Enamel hypoplasia
Dental fluorosis
• yellowish or brownish discoloration
• occlusal distortion, aesthetic problems, sensitivity
• localized or present on numerous teeth and all or part of the surfaces of each affected tooth may be involved
Intrinsic tooth discoloration associated with drugs from the tetracycline family.
Etiology
Tetracycline incorporate into the calcification process of developing teeth, affects either primary or secondary dentition after maternal or childhood ingestion respectively.
Clinical Features
The affected teeth first have a bright-yellow bandlike appearance that fluoresces under ultraviolet light, the color gradually changes to gray or red-brown.
Etiologyer disease apical inflammation of deciduous tooth
(Turner tooth)
Clinical Features
• pits, grooves, lines or larger areas of missing enamel surface
incisal and occlusal surfaces •systemic symptoms
MILD
MODERAT SEVERE
Treatment
Prevention Micro-abrasive treatment Complex resin restoration
3ed section Tetracycline stained teeth
Histologic Features
Tetracyclines diffuse through dentin to the enamel interface, chelating calcium ions and incorporating into hydroxyapatite as a stable orthophosphate complex.