2nd part opd

max 1st pm

symmetrical groove

max 2nd pm

crumpled look

developmental grooves

mand 1st pm

snake eyes

mesial & distal pits

mand 2nd pm

Y-groove

supplemental grooves

max 1st molar

biggest, trapezoid

buccal & lingual dg

lingual pit

cusp of carabelli

max 2nd molar

smaller

no cusp of carabelli

max 3rd molar

heart shaped

mand 1st molar

biggest, rectangular

5 cusps (distal)

mand 2nd molar

smaller

cross-like dg

mand 3rd molar

smaller than 1st & 2nd

dental caries

- multifactorial

- transmissible

- oral disease

1. acidogenic chemicoparasitic theory

2. proteolysis chelation theory

3. caries balance concept

3 etiological theories explain

1. pits and fissure caries

2. smooth surface caries

3. root caries

according to anatomical site

1. primary caries

2. recurrent caries

3. residual caries

according to new or recurrent lesion

according to speed or progression

EARLY CHILDHOOD CARIES – primary dentition

BOTTLE/NURSING CARIES – 4 maxillary incisors

XEROSTOMIA-INDUCED – from radiotherapy treatment

rampant caries explain

incipient caries

demineralized enamel only

cavitated caries

beyond enamel into dentin

1. simple caries

2. compound caries

3. complex caries

according to number of tooth surface involved

non carious defects

non hereditary enamel hypoplasia

disruption/trauma during tooth development

pits, linear defects, no enamel

localized non hereditary hypocalcification

enamel mineralization is defective, lesion color varies from chalky, yellow, brown to gray

dentinogenesis imperfecta

- genetic defect in collagen formation

- enamel is uniformly brown - purplish & translucent

1. visual method

2. tactile method

3. radiographic method

caries detection

treatment planning