文档介绍：Clinical Features & Diagnosis of Dental Caries
CHEN Zhi

Wuhan University School of Stomatology
Current concepts of Caries
Dental caries is a specific infectious microbiological disease of the teeth that results in localized dissolution and destruction of the calcified tissues.
Germfree animals do not get caries.
Current concepts of caries etiology
Micro-
organisms
host
& tooth
Sub-
strate
caries
time
no
caries
no
caries
no
caries
no
caries
Current concepts of Caries
The disease process begins with the concentration of mutans us at specified tooth surfaces and may lead to white spot formation or even cavitation.
Current concepts of Caries
The development of dental caries is
a dynamic process of demineralization of the dental hard tissues
by the products of bacterial metabolism,
alternating with periods of remineralization.
Harris and Christen
《 Primary Preventive Dentistry》, 1995
Classification
according to the progression rate
according to the involving site
according to the severity
according to the previous treatment
Classification according to the progression rate
Acute caries
Rampant caries
Chronic caries
Arrested caries
Secondary caries
Active caries
Arrested caries
Acute Caries
progress fast, often in children and teenagers, light colored cavity.
Rampant Caries
Caries in a patient with impaired salivary function as result of radiation therapy

(Drs Jansma and Vissink)
Rampant caries, many tooth involved at same time with acute caries feature often panied by systematic disorder, such as Sjogren syndrome or saliva reduction after radiation.