EX1; Characteristics of Optimal Occlusion

Question 1

About what distance is strictly rotation, which puts you at risk of getting out of CR

Answer 1

25mm

Question 2

In order to make sure you do not get out of CR, what measurement should be taken

Answer 2

5mm

Question 3

When would you ignore the CO record and hand articulate into MI

Answer 3

when CO = MI

around 10% of cases

Question 4

Which type of intercondylar distance would produce a larger mandibular lateral movement

Answer 4

wider

Question 5

This is achieved only when the articular discs are properly interposed between the condyles and the articular fossa

Answer 5

optimal joint relationship; orthopedically stable joint position

Question 6

In the optimal joint position, the articular surfaces and tissues of the joint are aligned such as what occurs

Answer 6

that the forces applied by the musculature of not create any damage

Question 7

The musculoskeletally stable joint position can only be maintained when

Answer 7

it is in harmony with a stable occlusal plane; on multiple teeth on both sides of the arch

Question 8

More teeth contacts provide what

Answer 8

more stabilization of the mandible and decrease the forces to each tooth

Question 9

This type of contact of all teeth during mandibular closure is required for optimal functional tooth contacts

Answer 9

even and simultaneous

Question 10

Which is ideal, CO coinciding with MI or CO slide

Answer 10

CO coinciding with MI

Question 11

This does not tolerate pressure forces

Answer 11

osseous tissues

Question 12

This is present between the roots and the alveolar bone to control occlusal forces

Answer 12

PDL

Question 13

What are the two types of occlusion

Answer 13

cusp-fossa

cusp-marginal ridge occlusion

Question 14

Which type of occlusion is more ideal

Answer 14

cusp-fossa

Question 15

Where is the force directed in cusp-fossa occlusion

Answer 15

along the long axis

Question 16

What are the two types of axial loading

Answer 16

cusp tip to flat surface

tripodization

Question 17

Which class of levers is the TMJ

Answer 17

class III; least efficient of the classes

Question 18

What are the fulcrum, load, and effort of the TMJ

Answer 18

fulcrum = joint
load = bollus
effort = muscles

Question 19

In MI, the posterior teeth come into contact and act as what

Answer 19

a stop to minimize horizontal load on anterior teeth

Question 20

The anterior teeth guide excursive movements of the mandible so that what does not occur

Answer 20

so that no posterior teeth contacts occur during lateral or protrusive excursions

Question 21

What are the two types of anterior guidance

Answer 21

incisal guidance

canine guidance

Question 22

What are seven effects of tooth loss

Answer 22

supraeruption
tilting
loss of contact
loss of posterior tooth support
loss of vertical dimension
flaring of anterior teeth
non-working inferences

Question 23

One major goal of occlusal treatment is to direct occlusal forces along what

Answer 23

the long axes of teeth (stable posterior contacts)

Question 24

One major goal of occlusal treatment is in MI position, all of the mandibular should contact their maxillary opponents when?

Answer 24

at the same time with the same intensity; CO=MI

Question 25

One major goal of occlusal treatment is to furnish a smooth protrusive path guided by what

Answer 25

by the anterior teeth without any interference from occlusal contacts between the posterior teeth; (posterior disclusion)

Question 26

One major goal of occlusal treatment is that working contacts (canine guidance or group function) should not be prevented from contacting by what

Answer 26

non-working interferences

Question 27

Using diagnostic casts and a semi-adjustable articulator allows for what relationships to be seen

Answer 27

static and dynamic relations of the teeth without interferences from protective neuromuscular reflexes

Question 28

What is the measurement of the arbitrary hinge axis

Answer 28

13 mm anterior to tragus on tragus-canthus line

Question 29

What is the measurement of the kinematic hinge axis

Answer 29

pinpoint actual axis by means of pantograph