Dentinogenesis
Primary dentinogenesis
before completion of root formation
Secondary dentinogenesis
after completion of root formation
Tertiary dentinogenesis
〖医学〗牙体牙髓病的无痛 治疗
odonto-, odont-
牙, 齿
Odonto-logy
牙科学
endo-, end-
内,在内,内部
end-odontics
牙髓病学
peri-
周围,邻近
peri-odonto-logy 牙周病学
ped(o) -
与儿童有关的
ped-odontics
儿童牙科学
Demineralization of apatites Decomposition of organic substance
Discoloration
Disintegration of tooth structure
Cavitation
Definition
Dental caries, or tooth decay, is a pathological process of localized destruction of tooth tissue by microorganisms. It is an irreversible, slowly progressive decay of the hard tissues of individual teeth characterized by demineralization of apatites and decomposition of organic substance which leads to a disintegration of tooth structures and cavitation.
Susceptible sites
Susceptible teeth
molar premolar incisor canine
Classification
Developmental stage
Superficial Moderate Deep
Symptom?
Irritating/stimulating pain Spontaneous pain
stomato-, stomat- 口、 口腔 stomatic 口腔的 Stomato-logy 口腔(医)学 School of Stomatology 口腔医学院 stomatological 口腔医学的 stomat-itis 口腔炎
oral 口的
─ cavity
口腔
─ microflora 口腔菌丛
Operative Dentistry
•Caries •Pulpitis •Periapical desease
Developmental speed Chronic caries Acute caries
rampant caries
Arrested caries
Treated or not
primary caries secondary caries
Etiology
Multi-factorial disease
Host: teeth & saliva Microflora Substrate Time
Four factors must be acting concurrently
Conditions within each of these factors must be favorable :
Reparative dentinogenesis
Dentine matrix secreted by a new generation of odontoblast-like cells in response to an appropriate stimulus, after the death of the original odontoblasts.
at specific foci in the tooth in response to various stimuli
Reactionary dentinogenesis
Dentine matrix secreted by surviving odontoblasts in response to an appropriate stimulus.
Conservative Dentistry
❖ Operative Dentistry & Endodontics ❖ Periodontology & Oral Medicine ❖ Pedodontics
Department of
Conservative Dentistry Operative Dentistry & Endodonics
bacteria ── cariogenic
substrate ── suitable
host ─── susceptible
time ─── sufficient
Selwitz RH, Ismail AI, Pitts NB. Dental caries. Lancet. 2007 Jan 6;369(9555):51-9.
Biological basis of Operative Dentistry
Dentinogenesis
Primary dentinogenesis Secondary dentinogenesis Tertiary dentinogenesis
Reactionary dentinogenesis Reparative dentinogenesis
─ hygiene 口腔卫生
oralogy
口腔学
in vitro 离体 (在活体外) in vivo 在体 (在活体内) in situ 原位
Permanent dentition
Caries
Clinical Appearance
Байду номын сангаас
Characteristics
Process of caries