Flash Cards (Dental Anatomy, Physiology and Occlusion) Part 7

tmp57-299

 

Mandibular Left Lateral Incisor

Palmen 2

Universal: 23 International (FDI):32

CHARACTERISTICS

LATERAL INCISOR

Facial/Labial Aspect

Symmetry

Asymmetrical·

ProximaL contacts

MesiaL

IncisaL third

DistaL

IncisaL third

MesioincisaL angLes

Some rounding

DistoincisaL angLes

More rounded than mesioincisaL angLe

Incisal Aspect

IncisaL edge (ridge)

DistoLinguaL twist to a Line bisecting

cinguLum

PuLp horn(s)

VariabLe; more prominence


Lobes

4

Dimensions

Crown Length

9.5 mm (cervico-incisaL)

Crown diameter

MesiodistaL

5.5 mm

CervicaL

4.0 mm

LabioLinguaL

6.5 mm

Contour height

Less than 0.5 mm

FaciaL/LinguaL

Both cervicaL third

Root

Length

14.0 mm

PuLp (root) canaL(s)

1

Chronology

Eruption

7-8 yr

Root compLeted

10 yr

Mandibular Left Central Incisor

tmp57-301

Universal: 24 International (FDI): 31

CHARACTERISTICS

CENTRAL INCISOR

Facial/Labial Aspect

Symmetry

SymmetricaL biLateraLLy

ProximaL contacts

MesiaL

IncisaL third

DistaL

IncisaL third

MesioincisaL angLes

Sharp right angLes

DistoincisaL angLes

Sharp right angLes

Incisal Aspect

IncisaL edge (ridge)

Right angLe to Line bisecting cinguLum

PuLp horn(s)

1 or 0

Lobes

4

Dimensions

Crown Length

9.0 mm

Crown diameter

MesiodistaL

5 mm

CervicaL

3.5 mm

LabioLinguaL

6.0 mm

Contour height

Less than 0.5 mm

FaciaL/LinguaL

Both cervicaL third

Root

Length

12.5 mm

PuLp (root) canaL(s)

UsuaLLy 1; 2 possibLe

Chronology

Eruption

6-7 yr

Root compLeted

9 yr

Mandibular Left First Premolar

tmp57-302

Universal: 21

International (FDI): 34

CHARACTERISTICS

FIRST PREMOLAR

Facial/Buccal Aspect

ProximaL contacts

Cervico-occLusaL

MesiaL/distaL, middLe third

Form

AsymmetricaL

Lingual Aspect

BuccaL profiLe

ALL buccaL profiLe seen

Cusp height

LinguaL Less than buccaL

Mesial Aspect

OccLusaL pLane

TiLted LinguaLLy

Transverse ridge or

buccaL trianguLar ridge

Transverse ridge present

Occlusal Aspect

OutLine form

Diamond-shaped

Cusps

2

Lobes

4

Dimensions

Crown Length

8.5 mm (cervico-occLusaL)

Crown diameter

MesiodistaL

7.0 mm

CervicaL

5.0 mm

BuccoLinguaL

7.5 mm

Contour height

FaciaL

CervicaL third

LinguaL

MiddLe third

Root

Length

14.0 mm

PuLp canaL(s)

1

PuLp horn(s)

1

Chronology

Eruption

10-12 yr

Root compLeted

12-13 yr

Mandibular Left Canine

tmp57-303

Universal: 22 International (FDI): 33

CHARACTERISTICS

LEFT CANINE

Facial/Labial Aspect

ProximaL contacts

MesiaL

IncisaL third

DistaL

MiddLe third

Mesial Aspect

Narrower, Longer

Lingual Aspect

FLat LinguaL surface

MarginaL ridges

ParaLLeL or sLightLy converging

CinguLum

SmaLLer, may be off center distaLLy

LinguaL pits, grooves

None

Incisal Aspect

Less symmetry; distaL cusp ridge rotated

Incisal/Proximal Aspects

Cusp tip LinguaL to root axis Line

Dimensions

MesiodistaL

7.0 mm

LabioLinguaL

7.5 mm

IncisaL-cervicaL

11.0 mm

Contour height

Less than 0.5 mm

FaciaL/LinguaL

Both cervicaL third

PuLp horn(s)

1

Lobes

4

Root

TerminaL (number)

Maybe 2

Length

16 mm

Chronology

Eruption

9-10 yr

Root compLeted

12-14 yr

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