Development Of Occlusion

Question 1

Who defined this statement

Occlusion is defined as the changing interrelationship of the opposing surface of the maxillary and mandibular teeth which occur during movements of the mandible and terminal full contact of the maxillary and mandibular arches

Answer 1

Salzmann and gregory

Question 2

The term oclusion is derived from the latin word ____

Answer 2

Occlusio

Question 3

Defined as the relationship between all the components of the masticatory system in normal function, dysfunction and parafucntion

Answer 3

Occlusion

Question 4

An ideal occlusion is a result of developmental process consisting of ?? __ __ __

Answer 4

Jaw growth
Toothformation
Eruption

Question 5

What is seen in birth?

Answer 5

Plain firm tissues of alveolar ridge
No teeth

Question 6

What is seen as the child develops

Answer 6

Alveolar ridge enlarges and grows

Teeth develop and assumes its final shape and place

Question 7

What are the stages of development of occlusion

Answer 7

A. Pre-dental/dentale period
B. Deciduous dentition period
- mixed dentition period
-1st transition period
- Inter transition period
- 2nd transition period
C. Permanent dentition period

Question 8

Refers to the period from birth to the eruption of first deciduous tooth in the oral cavity

Answer 8

Predental / dentale perod

Question 9

This period ideally ranges from birth to 6months but a delay in eruption of first deciduous toeeth by 4-10 months is considered normal

Answer 9

Predental / dentale period

Question 10

How many months can a normal eruption of first deciduous teeth can be delayed to be considered normal

Answer 10

4-10 months

Question 11

Is a horse shoe shaped and the gum pads extends labially and bucally beyond those in the mandible

Answer 11

Maxillary gums pad

Question 12

The maxillary gum pad develops into 2 parts. Unsa ni sla

Answer 12

Labio-buccal ( differentiates former to the lingual )

Lingual

Question 13

This gum pad is a U shaped and are anteriorly everted

Answer 13

Mandibular gum pads

Question 14

Separates gum pads from palate

Answer 14

Gingival groove

Question 15

Exteds from the incisive papilla, backwards to touch the gingival groove in the canine region and continues forward in the molar region

Answer 15

Dental grooove

Question 16

Depression between the 10 segments of the gum pads

Answer 16

Transverse grooves

Question 17

Transverse groove between the canine and molar sac region

Answer 17

Lateral sulcus

Question 18

There are 10 segments in both gum pads, but in the mandibular gum pad, it is less __

Answer 18

Demarcated

Question 19

The gingival groove in mandibular gum pad ___ the lingual extent

Answer 19

Demarcates

Question 20

The dental grooves of mandibular gum pad runs ___ and ___ in the canine region

Answer 20

Backwards and laterally

Question 21

Maxillary gum pads is ____ than mandibular and there is total overlapping of maxillary gum pad

Answer 21

Wider

Question 22

The gum pads grow rapidly during he ___ year of life and the growth is more in the ____ direction

Answer 22

1st year

Transverse direction

Question 23

(Gum pads?) Length increases, mostly in the ___ direction

Answer 23

Posterior

Question 24

The first tooth to erupt in deciduous dentition

Answer 24

Mandibular central incisors (6-7 months)

Question 25

7 features of deciduous dentition

Answer 25

1. Spacing 2. Terminal plane relation of deciduous dentition 3. Deep bite 4. Dental arches - wide U shape 5. Flat curve of spee 6. Shallow cuspal interdigitation 7. Vertically placed incisors

Question 26

3 stages of mixed dentition

Answer 26

1. 1st transitional stage 2. Inter transitional stage 3. 2nd transitional stage

Question 27

Permanent mandibular 1st molar first to appear at _ years old

Answer 27

6years old

Question 28

What tooth guides the permanent 1st molars into the dental arch

Answer 28

Deciduous 2nd molars

Question 29

Determines the permanent molar relation as it erupts into occlusion

Answer 29

First transitional stage of mixed dentition

Question 30

When the distal surfaces of the upper and lower second primary molars were in the same vertical plane in centric occlusion

Answer 30

Flush terminal

Question 31

Lower molar moves __ to __mm mesially relative to the upper molar It utilizes the primate space and forward growth of the mandible

Answer 31

3-5mm

Question 32

A naturally occurring spacing between the teeth of the primary dentition

Answer 32

Primate space

Question 33

Eruptive forces of permanent molars in the 1st transitional period moves what tooth forward

Answer 33

1st and 2nd deciduous molar

Question 34

The exchange of lower incisor take place. The difference between the amount of space needed for the accommodation of incisors

Answer 34

incisal liability

Question 35

Mm of upper and lower arch in incislal liability

Answer 35

7mm upper arch 5mm lower arch

Question 36

What factors can overcome incisal liability

Answer 36

1. Utilization of interdental sapces seen in primary dentition 2. Increase in intercanine width 3. Change in incisor inclination

Question 37

These period consists of sets of deciduous and permanent teeth in both arches Between permanent incisors and permanent 1st molars are deciduous canines and molars This phase is relatively stable and no change occurs

Answer 37

Inter transitional period

Question 38

What period of mixed dentition Replacement of deciduous molars and canines by premolars and permanent cuspids respectively

Answer 38

Second transitional period

Question 39

Combined mesiodistal width of permanent canines and premolars if usually less than that of deciduous canines and molars

Answer 39

Leeway space of nance

Question 40

In this period. Sometimes, there is a transient or self correcting malocclusion seen in axillary incisor region between 8-9 years of age

Answer 40

Mixed dentition (ugly ducking stage)

Question 41

What is usually seen in maxillary incisor region between 8-9years of age during the ugly duckling stage

Answer 41

Transient or self correcting malocclusion

Question 42

Particularly, this transient or self crrecting malocclusion that are seen in max incisor region between 8-9years of age can be seen during eruption of ______

Answer 42

Permanent canines

Question 43

As developing permanent canines erupt, they displace roots of ____ tooth on to roots of central incisors, which also gets displaced ____ A resultant distal divergence of crowns of two central incisors causes a midline spacing

Answer 43

Lateral incisors Mesially

Question 44

In ugly ducking stage, a resultant divergence of crowns of two central incisors causes a ______

Answer 44

Midline spacing

Question 45

ugly duckling stage was first described by??

Answer 45

Broadbent

Question 46

Ugly duckling stage aka as ?

Answer 46

Broadbent phenomenon

Question 47

Children tend to look ugly during this phase of development

Answer 47

Mixed dentition ugly duckling stage

Question 48

This condition usually corrects itself when canines erupt and pressure is transferred from roots to coronal area of incisors

Answer 48

Mixed dentition ugly ducking stage

Question 49

Permanent dentition period Permanent molar relation classified as:

Answer 49

Angles class I Angles class II Angles class III