Dental arch discrepancies pg 49-57

Question 1

Planes in which discrepancies are measured

Answer 1

• Transverse
• Sagittal
• Vertical

Question 2

Transverse discrepancies are evaluated according to

Answer 2

Sagittal plane

Question 3

In the anterior segment of the dental arch, the incisive point shift to the left or right is measured

Answer 3

in mm

Question 4

In the posterior segment of the dental arch, the anterior and posterior arch widths are evaluated with

Answer 4

Ponts method

Question 5

Anterior arch width measuring point in maxilla (P:P)

Answer 5

Deepst part of central sulcus of first permanent premolars

Question 6

Anterior arch width measuring point in manible (P:P)

Answer 6

Contact point between first and second permanent premolars buccally

Question 7

Posterior arch width measuring point in maxilla (M:M)

Answer 7

Midpoint of MB fissure of first permanent molar

Question 8

Posterior arch width measuring point in Mandible (M:M)

Answer 8

Tip of DB cusp of first permanent molar

Question 9

Maxillary and mandibular points correspond in central occlusion in

Answer 9

Ideally aligned arches

Question 10

If M:M and P:P values are greater than normal

Answer 10

Arch expanded

Question 11

If M:M and P:P values are smaller than normal

Answer 11

Arch constricted

Question 12

Sagittal discrepancies are assessed with

Answer 12

Transverse plane

Question 13

In sagittal discrepancies an increase in P:P results in

Answer 13

Lengthened dental arch

Question 14

In sagittal discrepancies an decrease in P:P results in

Answer 14

Shortened dental arch

Question 15

Measurement of P:P sagittal discrepancies

Answer 15

Line from buccal surfaces of central incisors to first premolars

Question 16

Measurement of M:M sagittal discrepancies

Answer 16

• Line from buccal surfaces of central incisors to first premolars
• Mesial displacement If left and right lines dont match

Question 17

Maxillary canine, premolar and molar positions are evaluated according to

Answer 17

Palatine rugae

Question 18

Stable morphological trait

Answer 18

Transverse palatine folds(palatine rugae)

Question 19

In arches with normal shape, the canines are positoned across the

Answer 19

first lateral ruga

Question 20

According to krumova, used to evaluate sagittal displacement of teeth

Answer 20

First palatine ruga

Question 21

Evaluating the maxillary canine position to the first palatine ruga by

Answer 21

Van der Linden

Question 22

Evaluation of maxillary canine position according to first palatine ruga

Answer 22

• Line drawn from M+D points to lowest point of canine gingival margin and then to tip
• Canine measured as normal, mesial or distal to palatine fold

Question 23

Ideal position of canine according to Van der Linden

Answer 23

First palatine rugae lies on a vertical line between canines

Question 24

• Constant position
• Prediction of canine eruption during develpment of permanent dentition

Answer 24

First palatine fold use

Question 25

Evaluation of MD displacement of premolars

Answer 25

Third palatine ruga use

Question 26

In treatment with extractions for space closure control

Answer 26

Third palatine ruga use

Question 27

Dettermination of tooth displacement after premature loss of primary teeth

Answer 27

Third palatine ruga use

Question 28

Introduced the raphe papilla tangent

Answer 28

Schmuth

Question 29

* For assessment of symmetrically drifted posterior teeth * Line distal to Incisive papilla and perpendicular to midsagittal line

Answer 29

Raphe papilla tangent

Question 30

Ideally the raphe papilla tangent

Answer 30

Halfs clinical crown of canine

Question 31

If raphe papilla tangent passes through distal surface of canine crown

Answer 31

Posterior teeth mesially displaced

Question 32

Raphe papilla tangent is used in the

Answer 32

Maxillary arch

Question 33

Vertical discrepancies are assessed according to

Answer 33

Occlusal plane

Question 34

▪️Made on fully erupted maxillary and mandibular permanent teeth ▪️where curve of spee normal ▪️On flat surface

Answer 34

Vertical Discrepancies

Question 35

Teeth in maxilla over occlusal plane

Answer 35

🔸Tip of permanent canine(1mm) 🔸MB cusp of maxillary permanent first molar (1mm) 🔸Lateral incisor 🔸Second permanent molar

Question 36

Teeth in mandible over occlusal plane

Answer 36

🔸Permanent canines (1mm) 🔸Second molar (1mm)

Question 37

If tooth under occlusal plane

Answer 37

Intraposition

Question 38

If tooth over occlusal plane

Answer 38

Supraposition

Question 39

Curve of spee

Answer 39

Anterior posterior curvature of occlusal surfaces of left and right posterior teeth

Question 40

The curve of spee starts

Answer 40

🔸At tip of lower canine 🔸Follows buccal cusps of premolars and molars to terminal molar

Question 41

Curve of spee is convex in the ………… and concave in the

Answer 41

🔸Maxilla 🔸Mandibe

Question 42

Normal depth of curve of spee

Answer 42

1.5mm

Question 43

Three planes of orthognatic occlusion

Answer 43

🔸Transverse 🔸Sagittal 🔸Vertical

Question 44

Occlusion in the transverse plane- anterior segment has the maxillary and mandibular midlines

Answer 44

Aligned

Question 45

Occlusion in the transverse plane- posterior segment includes buccal Cusps of mandibular posterior teeth occluding with

Answer 45

Central sulcus of maxillary posterior teeth

Question 46

Occlusion in the Sagittal plane- anterior segment. The buccal surfaces of mandibular anterior teeth occlude with

Answer 46

Palatial surfaces of maxillary anterior teeth

Question 47

Occlusion in the Sagittal plane- posterior segment. Each permanent tooth occludes with

Answer 47

🔸Two teeth from mandibular arch except mandibular central incisors and maxillary third molars

Question 48

Occlusion In the vertical plane- anterior segment. The incisal edges of maxillary teeth are

Answer 48

Within incisal third of mandibular teeth

Question 49

Occlusion In the vertical plane-posterior segment. There are point contacts between

Answer 49

🔸Maxillary posterior lingual cusp tips and mandibular buccal cusp tips

Question 50

Occlusal Sagittal discrepancies are evaluated according to

Answer 50

Transverse plane

Question 51

Occlusion sagital discrepancies in anterior segment

Answer 51

🔸Overjet 🔸Edge to edge bite 🔸Anterior crossbite 🔸Anterior cross bite with reverse overjet

Question 52

Horizontal distance between labio-incisal surfaces of mandibular incisors and Linguo-incisal surfaces of maxillary incisors

Answer 52

Overjet

Question 53

Maxillary anterior teeth incisally occlude with mandibular anterior teeth

Answer 53

Edge to edge bite

Question 54

Lingual surfaces of mandibular anterior teeth occlude with buccal surfaces of antagonists

Answer 54

Anterior cross bite

Question 55

Overjet between lingual Surfaces of mandibular anterior teeth and buccal surfaces of maxillary antagonists

Answer 55

Anterior cross bite with reverse Overjet

Question 56

Occlusion lines in posterior segment are drawn from

Answer 56

🔸MB cusp of maxillary first molar to buccal groove of mandibular first molar 🔸Midpoint of maxillary canine to contact point between canine and first premolar

Question 57

Anterior posterior occlusal relationship ls are evaluated according to

Answer 57

Angles classification

Question 58

🔸MB cusp of maxillary first molar aligned buccal Groove of mandibular first molar 🔸Maxillary canine occludes with distal half of mandibular canine and mesial half of first premolar

Answer 58

Class I

Question 59

In class I there is a normal Molar relationship but there may be

Answer 59

🔸Crowding 🔸Misalignment 🔸Cross bite

Question 60

🔸MB groove of mandibular first molar distal to MB cusp of maxillary first molar 🔸Distal surface of mandibular canine is distal to mesial surface of maxillary canine

Answer 60

Class II

Question 61

Distal occlusion with proclined maxillary anterior teeth and large Overjet

Answer 61

Class II division I

Question 62

🔸Distal occlusion with retroclined maxillary incisors and proclined laterals 🔸Deep overbite

Answer 62

Class II division II

Question 63

🔸MB groove of mandibular first molar is mesial to MB cusp of maxillary first molar 🔸Distal surface of mandibular canine is mesial to mesial surface of maxillary canine

Answer 63

Class III

Question 64

Normal occlusion

Answer 64

Class I

Question 65

Mandibular posterior teeth occlude distaly to maxillary teeth

Answer 65

Class II

Question 66

Mandibular posterior teeth occlude mesially to maxillary teeth

Answer 66

Class III

Question 67

In occlusion, transverse discrepancies are evaluated according to

Answer 67

Sagittal plane

Question 68

In occlusion- transverse discrepancies/anterior segment. The mandibular midline shift relative to midline is measured in

Answer 68

Mm

Question 69

In occlusion- transverse discrepancies/anterior segment. Misalignment of midline’s may be due to

Answer 69

🔸Laterognatia 🔸Laterodeviation 🔸Maxillary anterior tooth shift

Question 70

In occlusion- transverse discrepancies/posterior segment

Answer 70

🔸Posterior cross bite 🔸Cusp to cusp bite 🔸Lingual cross bite 🔸Buccal cross bite

Question 71

Buccal cusps of maxillary posterior teeth occlude with central sulcus of mandibular posterior teeth

Answer 71

Posterior cross bite

Question 72

Types of cross bite

Answer 72

🔸Buccal/lingual to buccal/lingual cusp 🔸Buccal/Lingual cusp to lingual/buccal cusp

Question 73

Maxillary and mandibular posterior teeth occlude with their occlusal cusps

Answer 73

Cusp to cusp bite

Question 74

Lingual surfaces of maxillary posterior teeth occlude with buccal surfaces of mandibular posterior teeth

Answer 74

Lingual cross bite

Question 75

Buccal surfaces of maxillary posterior teeth occlude with lingual Surfaces of mandibular posterior teeth

Answer 75

Buccal cross bite

Question 76

In occlusion, vertical discrepancies are evaluated according to

Answer 76

Horizontal plane

Question 77

In occlusion, vertical discrepancies in anterior segment are

Answer 77

🔸Moderate overbite 🔸Deep overbite 🔸Anterior open bite 🔸Edge to edge bite

Question 78

Overbite where incisal edges of maxillary teeth within middle third of mandibular teeth/half the clinical crown

Answer 78

Moderate overbite

Question 79

Overbite where incisal edges of maxillary teeth are within cervical third of mandibular teeth/more than half the clinical crown

Answer 79

Deep overbite

Question 80

Overbite when incisal edges of mandibular teeth are in contact with maxillary lingual gingival tissue

Answer 80

Severe overbite

Question 81

Over bite with Lack of incisal contact between maxillary and mandibular anterior teeth

Answer 81

Anterior open bite

Question 82

Lack of occlusal contact between maxillary and mandibular posterior teeth

Answer 82

Posterior open bite