Caries Management - Science and Clinical Practice. Группа авторов
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Название: Caries Management - Science and Clinical Practice
Автор: Группа авторов
Издательство: Ingram
Жанр: Медицина
isbn: 9783131693815
isbn:
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3 Histological and Clinical Appearance of Caries
Wolfgang Buchalla
Activity of White and Brown Spot Lesions
Transmitted and Polarized Light Microscopy
Transverse Microradiography (TMR)
Scanning Electron Microscopy (SEM)
Transmission Electron Microscopy (TEM)
Early Signs of Dentin Reaction
Continuing Caries Progression into Dentin
Spread of Bacteria within Dentin
Fluorescence Properties of Carious and Healthy Dental Hard Tissue
Caries Arrest and Remineralization
Correlation of Histology with Radiography and Clinical Appearance of Caries
The clinical appearance of caries is of great interest to the dental professional, because it tells something of the history of a caries lesion and provides valuable information for adequate noninvasive and invasive treatment. The histology of the caries lesion provides fundamental understanding of the disease process; hence it supports the dental professional with information necessary to make the right treatment decision (Chapters 9 and 20). Much of today's histological knowledge of the caries process was discovered many years ago. Besides advances in oral biology, an understanding of the role of dental biofilm and the invention of the transmitted light microscope, particularly using polarized light, has fostered our knowledge of the caries process. But also other techniques, such as transmission and scanning electron microscopy, fluorescence microscopy, and microradiography have added to our understanding of how caries develops within a tooth.
This chapter will address the following:
• How do enamel and dentin caries appear clinically and histologically?
• How does the caries lesion manifest using different investigative methods—for example, light microscopy, scanning electron microscopy, microradiography (mineral content), hardness testing and fluorescence?
• Caries is a dynamic process—how can caries activity be recognized?
• Where are the bacteria within a caries lesion?
• Can the caries process be stopped and dental hard tissue even be remineralized?
• Dental erosion—not caries, but also destructive to the dentition.
Enamel Caries
Location in the Teeth
Since it is caused by acids produced from a biofilm covering the tooth surface, carious dissolution of dental hard tissue (i.e., enamel, dentin, and cementum) always starts on a tooth's surface, which is accessible to the oral environment. Clinically, this may be at the enamel surface, root cementum, or exposed dentin. For simplicity we look СКАЧАТЬ