Histo:dentin Structure

Front 1

A DENTAL TISSUE THAT CONSTITUTE THE BULK OR BODY OF THE TOOTH, ITS PHYSICAL AND CHEMICAL QUALITIES CLOSELY RESEMBLES BONE

Back 1

DENTIN

Front 2

STATE THE MAIN MORPHOLOGICAL DIFFERENCE B/W BONE AND DENTIN

Back 2

1. BONE FORMING CELL-OSTEOBLAST COMPLETELY ENTRAPPED IN THE MATRIX (OSTEOCYTE)
2. CELL BODIES OF DENTIN FORMING CELL-ODONTOBLAST ARE NOT ENTRAPPED, OUTSIDE THE MATRIX ALONG INNER (PULPAL) SURFACE

Front 3

A PROTOPLASMIC EXTENSION OF ODONTOBLAST WHICH ENTER THE DENTIN IN A CIRCULAR CHANNELS

Back 3

DENTINAL TUBULES

Front 4

STATE THE MAIN PHSIOLOGICAL DIFFERENCE B/W DENTIN AND BONE

Back 4

DENTIN IS AVASCULAR

Front 5

NAME THE CHEMICALS AND % WEIGHT FOUND IN MATURE DENTIN, THAT COULD BE SIMILAR TO BONE

Back 5

1. INORGANIC MATERIAL -70%
2. ORGANIC MATERIAL -20%
3. WATER -10%

Front 6

INORGANIC COMPONENT OF DENTIN

Back 6

POORLY CRYSTALINE HYDROXYAPATITE

Front 7

ORGANIC COMPONENT OF DENTIN

Back 7

1. PRIMARILY TYPE I COLLAGEN W/
2. FRACTIONAL INCLUSION OF: GLYCOPROTEINS, PROTEOGLYCAN, AND PHOSPHOPROTEINS

Front 8

WHY CAN DENTIN, LIKE BONE, BE DECALCIFIED WHILE RETAINING THE MORPHOLOGICAL OUTLINE OF THE TISSUES

Back 8

1 BECAUSE OF RELATIVELY HIGH ORGANIC CONTENT

Front 9

TRUE OR FALSE DENTIN CAN BE EXAMINE USING STAINED SECTIONS AND GROUND SECTION

Back 9

TRUE

Front 10

WHAT DOES THE 3 DISTINCT TYPES OF DENTIN SHARE IN COMMON

Back 10

1. MINERALIZE COLLAGENOUS MATRIX
2. DENTINAL TUBULES- NARROW LONGITUDINAL CHANNELS APPEAR CIRCULAR IN CROSS SECTION
3. ODONTOBLASTS- AN INNER SURFACE AT ONE TIME COVER BY FORMATIVE CELL (OB)

Front 11

BULK OF THE DENTIN FOUND IN BOTH THE CROWNS( CORONAL DENTIN) AND ROOT (RADICULAR DENTIN) IS TERM

Back 11

PRIMARY DENTIN

Front 12

DENTIN FORMED UP UNTIL THE COMPELTION OF THE FORMATION OF THE APICAL FORAMINA COULD BE CALLED

Back 12

PRIMARY DENTIN

Front 13

WHAT ARE PREDICTABLE ABOUT DENTIN

Back 13

1. VERY REGULAR STRUCTURE
2. RATE OF FORMATION

Front 14

A CUT OF DENTINAL TUBULES B/W DEJ AND SURFACE OF PULP, AT ANY LEVEL WILL BE THE SAME SIZE AND EVENLY DISTRIBUTED THROUGHOUT THE MATRIX

Back 14

TRANSVERSE SECTION CUT

Front 15

IN A TRANSVERSE SECTION, WHERE IS DENTINAL TUBULES HAVE THEIR SMALLEST DIAMETER (~1UM) AND ARE FARTHEST APART

Back 15

NEAR THE DEJ

Front 16

IN A TRANSVERSE SECTION, WHERE DOES THE DENTINAL TUBULES HAVE THEIR LARGEST DIAMETER (~3 UM) AND ARE CLOSEST TOGETHER.

Back 16

NEAR THE SURFACE OF THE PULP

Front 17

A SHAPED PATH FOLLOWED BY DENTINAL TUBULES FROM THE OUTER SURFACE TO THE SURFACE OF PULP IN THE CORONAL DENTIN

Back 17

S SHAPED CURVATURE

Front 18

NAME THE LOCATIONS WHERE THE S-SHAPED CURVATURE (PRIMARY CURVATURE) ARE LESS PRONOUNCED

Back 18

1. APICAL TWO THRID OF THE ROOT.
2. BENEATH THE INCISAL EDGES AND CUSPS, THEY RUN ALMOST A STRAIGHT COURSE

Front 19

2 DISTINCT MATRICES PRESENT IN THE PRIMARY DENTIN

Back 19

1. PERITUBULAR MATRIX
2. INTERTUBULAR MATRIX

Front 20

CHARACTERISTICS OF PERITUBULAR MATRIX

Back 20

1. FORM THE WALL OF DENTINAL TUBULES (MOST PRIMARY DENTIN)
2. NOT PRESENT IN THE INNERMOST LAYER OF DENTIN
3. HIGHLY MINERALIZED, LIKE ENAMEL
4. COMPLETELY LOST IN DECALCIFIED DENTIN

Front 21

A MATRIX LOCATED B/W THE DENTAL TUBULES

Back 21

INTERTUBULAR MATRIX

Front 22

CHARACTERISTICS OF INTERTUBULAR MATRIX

Back 22

1. REPRESENTS PRIMARY SECRETORY PRODUCT OF ODONTOBLAST
2. CONSIST OF TIGHTLY INTERWOVEN NETWORK OF TYPE I COLLAGEN FIBRILS
3. HYDROXYAPAPATITE CRYSTAL DEPOSITED

Front 23

DENTIN B/W THE THIN (50-150 UM) OUTER LAYER OF THE PRIMARY DENTIN

Back 23

1. MANTLE DENTIN

Front 24

DENTIN THAT MAKE-UP THE BULK OF THE PRIMARY DENTIN

Back 24

CIRCUMPULPAL DENTIN

Front 25

LIST THE MAJOR DIFFERENCES B/W MANTLE AND CIRCUMPULPAL DENTIN REGION

Back 25

1. SIZE OF COLLAGENOUS FIBER BUNDLES ARE MUCH LARGER IN MANTLE DENTIN
2 ORIENTATION IS DIFFERENT

Front 26

A DENTIN DEVELOPS AFTER ROOT FORMATION IS COMPLETED, REPRESENT CONTINUING AND MUCH SLOWER DEPOSITION OF DENTIN THROUGHOUT LIFE

Back 26

SECONDARY DENTIN

Front 27

A DENTIN STRUCTURE THAT IS UNPREDICTABLE, GENERALLY TENDS TO BE MORE IRREGULAR THAN PRIMARY DENTIN

Back 27

SECONDARY DENTIN

Front 28

LOCATION WHERE SECONDARY DENTIN IS DEPOSITED BUT NOT EVEN

Back 28

PULPAL SURFACE OF THE PRIMARY DENTIN

Front 29

PULPAL SURFACE(S) WHERE SECONDARY DENTIN DEPOSITION IS THE GREATEST

Back 29

1. PULP HORNS
2. ROOF OF THE PULP CHAMBER

Front 30

TRUE OR FALSE: NOT UNCOMMON FOR THE ENTIRE CORNAL PULP CHAMBER TO BE OBLITERATED BY DEPOSITION OF SECONDAY DENTIN IN OLDER INDIVIDUALS

Back 30

TRUE

Front 31

A DENTIN PRODUCED IN REACTION TO VARIOUS STIMUL

Back 31

REPARATIVE DENTIN (TERTIARY DENTIN)

Front 32

STIMULI THAT CAUSES THE PRODUCTION OF REPARATIVE DENTIN

Back 32

1. ATTRITION
2. CARIES
3. DENTAL RESTORATON PROCEDURE

Front 33

A DENTIN(S) WHICH FORM ALONG THE ENTIRE PULP BORDER

Back 33

1.PRIMARY DENTIN
2. SECONDARY DENTIN

Front 34

A DENTIN CONFINED TO LOCALIZED AREAS BENEATH THE STIMULI

Back 34

REPARATIVE DENTIN

Front 35

A DENTIN THAT IS UNPREDICTABLE, BUT ALMOST ALWAYS MUCH MORE IRREGULAR THEN PRIMARY DENTIN

Back 35

REPARATIVE DENTIN

Front 36

ALTERATION OF DENTIN STRUCTURE THAT OCCUR DURING DENTINOGENESIS

Back 36

1. INTERGLOBULAR DENTIN
2. TOMES' GRANULAR LAYER

Front 37

ALTERATION THAT OCCURED IN MATURE DENTIN TISSUE

Back 37

1. SCLEROSIS
2. DEAD TRACT

Front 38

A DENTIN FORM DURING DENTINOGENESIS WHERE SMALL IRREGULARLY SHAPED AREAS W/I THE MATRIX FAIL TO MINERALIZE

Back 38

INTERGLOBULAR DENTIN

Front 39

A AREA OF INTERGLOBULAR DENTIN OBSERVED IN BOTH GROUND SECTIONS AND H&E STAINED DECALCIFIED SECTIONS

Back 39

INTERGLOBULAR SPACES

Front 40

1. WHICH STAIN (S) DOES INTERGLOBULAR SPACE APPEAR: DARK? 2 LIGHTLY STAINED PINK

Back 40

1. GROUND SECTIONS
2. H&E SECTIONS

Front 41

A DENTIN ALTERATION FORM IN THE OUTERMOST PORTION OF THE RADICULAR DENTIN, W/ A NARROW LAYER THAT CONTAIN MANY SMALL INTERGLOBULAR SPACES

Back 41

TOMES' GRANULAR LAYER

Front 42

1. LOCATION WHERE TOMES' GRANULAR LAYER ARE ONLY FOUND? 2. WHICH STAIN IT IS BEST OBSERVED

Back 42

1. ROOT
2. GROUND SECTION

Front 43

A DENTIN ALTERATION OCCUR WHEN A STIMULI NOT ONLY INDUCE ADDITIONAL FORMATION OF DENTIN (SECONDARY AND REPARATIVE) BUT CHANGES PREVIOUS FORMED DENTIN

Back 43

SCLEROSIS (HARDING)

Front 44

DURING SCLEROSIS WHICH INORGANIC CRYSTALS MAY BE DEPOSITED IN DENTINAL TUBULES AS REACTION TO CARIES OR ABRASION

Back 44

HYDROXYAPATITE

Front 45

A DENTIN ALTERATION THAT OCCURS THROUGHOUT LIFE IN THE RADICULAR DENTIN, SPREADING FROM APEX TO THE CERVICAL REGION

Back 45

PROCESS OF SCLEROSIS

Front 46

TRUE OR FALSE: AN ENTIRE RADICULAR DENTIN MAY BECOME TRANSPARENT BECAUSE OF SCLEROTIC PROCESS IN OLDER INDIVIDUAL

Back 46

TRUE

Front 47

A DENTIN ALTERATION IN WHICH DENTINAL TUBULE ARE EMPTIED EITHER BY COMPLETE RETRACTION OF THE ODONTOBLAST PROCESS FROM THE TUBULE OR THROUGH DEATH OF THE ODONTOBLAST (OB)

Back 47

DEAD TRACT

Front 48

WHY ARE DEAD TRACT IN THE DENTINAL TUBULES STAINED BLACK IN A GROUND SECTION

Back 48

TUBULES ARE EMPTY AND FILLED W/ AIR

Front 49

A LOCATION WHERE DEAD TRACT ARE OFTEN FOUND BECAUSE OF ATTRITION OR ABRASION

Back 49

BENEATH DENTINAL TUBULES

Front 50

A CELL THAT FORM DENTIN AND IS DIFFERENTIATE FROM ECTOMESENCHYMAL CELL OF THE DENTAL PAPILLA

Back 50

ODONTOBLAST (OB)

Front 51

A PRODUCT OF ODONTOBLAST THAT BECOME MINERALIZED TO FORM DENTIN

Back 51

ORGANIC MATRIX

Front 52

1. INITIATION OF ODONTOBLAST DIFFERENTIATION FIRST OCCURS IN? 2. PROCESS INVOLVED

Back 52

1. GROWTH CENTER
2. INDUCTION AND COMPETENCE

Front 53

A INDUCTIVE CELL THAT EXPRESSES AND SECRETES GROWTH FACTORS WHICH BIND TO ELEMENT FOUND IN THE BASAL LAMINA

Back 53

EPITHELIAL CELL OF THE INTERNAL DENTAL EPITHELIUM

Front 54

A CELL THAT BASAL LAMINA BOUND FACTORS EXTEND ITS INDUCTIVE INFLUENCE TO AND IN RESPOSE DIFFERENTIATE INTO ODONTOBLAST

Back 54

PERIPHERAL CELLS OF THE DENTAL PAPILLA

Front 55

AN ODONTOBLAST CELL WHICH IS A TALL COLUMNAR CELL W/ A BASALLY LOCATED OPEN-FACED NUCLEUS AND A BASOPHILIC CYTOPLAM

Back 55

SECONDAY ODONTOBLAST

Front 56

THE CYTOPLASM OF SECONDARY ODONTOBLAST CONTAIN A FULL COMPLEMENT OF ORGANELLES REQUIRED FOR THE SYNTHESIS AND SECRETION OF:

Back 56

EXTRACELLULAR MATERIAL, MAINLY TYPE I COLLAGEN (SEEM IN EM)

Front 57

HOW IS FORMATION OF DENTIN VERY SIMILAR TO FORMATION OF BONE

Back 57

1. FIRST: ORGANIC MATRIX IS FORMED AND BECOME MINERALIZED

Front 58

A DENTIN CELL RESULTS FROM THE DEPOSITION OF MINERAL LAGS BEHIND FROM FORMATION OF ORGANIC MATRIX LAYER

Back 58

PRE DENTIN

Front 59

A CELL FOUND B/W ODONTOBLAST AND MINERALIZATION FRONT AND IS ANALOGOUS TO OSTEOID IN BONE

Back 59

PRE- DENTIN

Front 60

A PROCESS THAT IS FORMED AS THE ODONTOBLAST MOVES TOWARD THE CENTER OF THE PULP, ONE OF IT THICKER AND SHORTER PROCESS BECOME STRESS AND LEFT BEHIND TO FORM A PRINCIPAL EXTENSION OF THE CELL

Back 60

ODONTOBLAST PROCESS

Front 61

WALL OF THE DENTINAL TUBULES IS FORM BY

Back 61

MATRIX SURROUNDING THE ODONTOBLAST PROCESS

Front 62

TWO PATTERNS OF MINERALIZATION IN DENTIN

Back 62

1. GLOBULAR MINERALIZATION
2. LINEAR MINERALIZATION

Front 63

A FIRST DENTIN MINERALIZATION THAT OCCUR BECAUSE GLOBULAR MASSES CONTIUNE TO ENLARGE AND EVENTUALLY FUSE TO FORM A SINGLE CALCIFIED MASS

Back 63

GLOBULAR MINERALIZATION

Front 64

A SPACE FORM WHEN LARGE GLOBULAR MASSES FAIL TO FUSE FULLY AND LEAVING A SMALL AREAS OF UNMINERALIZED MATRIX

Back 64

INTERGLOBULAR SPACE

Front 65

A DENTIN MINERALIZATION THAT OCCUR EVENLY ALONG THE PREDENTIN-MINERALIZED DENTIN FRONT

Back 65

LINEAR MINERALIZATION