trauma from occlusion: dental implants Flashcards Preview

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Flashcards in trauma from occlusion: dental implants Deck (19):
1

what are the key characteristics of natural teeth that relate to occlusal forces?

PDL Attachment Apparatus

Can “adapt” to heavy forces

Tooth mobility as a physiological/ pathological phenomena

2

how do dental implants differ in their response to occlusal forces? (in comparison to natural teeth)

Direct bone-implant surface mechanical binding (osseointegration)

Continuous bone remodeling at bone-implant surface interface

Implant mobility as a pathological phenomena

3

implants are attached to the bone by ____________

Osseointegration

4

what is primary stability of an implant?

stability of the implant at the time of placement (mechanical interlocking mechanism between a screw and bone surface)

5

what factors influence primary stability of implants?

- Bone density

- Implant fixture design

6

how long is the healing time for mandibular implants? maxillary implants?

Mandible- 3 months

Maxilla- 6 months

7

what are the 3 types of implant loading?

Immediate Loading (at the time of placement)

Early loading (before conventional healing time)

Late loading (following 3 or 6 months based on location)

8

what types of failures can occur in an implant with excessive occlusal force?

Porcelain Fracture

Implant to abutment (screw loosening or fracture)

Implant fixture fracture

9

T/F: implants that have excessive occlusal force will not effect the adjacent teeth

FALSE

they can increase mobility of adjacent teeth

10

why do implants not have the same proprioception as normal teeth?

Sensory feedback through receptors localized within pdl (viscoelasticity) and within bone (elasticity)

the PDL is what gives most proprioceptive feedback

11

what are the 3 types of forces placed on implants?

Static forces

Functional forces

Excessive forces

12

what type of implant is at a high risk for excessive forces?

cantilevered implants

13

the Loading time of an implant depends on:

- Primary stability of the implant
- Implant design
- Restorative design
- Presence/absence of risk factors

14

T/F: Functional (and well controlled) loading may increase bone to implant contact

true

15

occlusal trauma can be a __________ etiological factor for peri-implant disease

primary

16

what causes “Retrograde Peri-implantitis”?

occlusal trauma

causes bone loss around implant

17

why must the forces on implants always follow the long axis?

implants lack a PDL so they are unable to "give" in response to any lateral forces

18

T/F: Research has shown that implant length is more critical than diameter in reducing the bone stress.

FALSE

Research has shown that implant diameter is more critical than length in reducing the bone stress.

19

the “all-on-4” implant placement technique is used for what?

full dentures