Implant Planning and Placement

Question 1

what is osseointegration

Answer 1

direct functional and structural connection between load bearing dental implants and living bone

Question 2

what is primary osseointegration

Answer 2

implant anchored in bone due to frictional forces provided between osteotomy and dental implant design features

Question 3

what is secondary osseointegration

Answer 3

functional connection between bone and implant
living bone grows onto surface of implant

Question 4

what is the healing process after implant insertion

Answer 4

granulation tissue in wound
immature woven bone
mature lamellar bone

Question 5

what is the supra-crestal tissue like with an implant in it

Answer 5

more collagen
less fibroblasts
collagen fibres orientate parallel to implant crown

Question 6

what is the sub-crestal tissue like with an implant in it

Answer 6

implant anchored to bone by direct functional contact
no physiologic adaption present
rigid connection

Question 7

what materials can be used for implants

Answer 7

titanium
titanium zirconium
ceramic

Question 8

when would you use a bone level implant

Answer 8

in aesthetics

Question 9

when would you use tapered implants

Answer 9

increased stability in immediate placement
root convergence apically

Question 10

what would dictate the length and diameter of implant use

Answer 10

site
indication
local anatomy

Question 11

what are the different surface treatments for implants

Answer 11

sand blasting
acid etch
plasma spray

Question 12

what is the purpose of implants

Answer 12

replace missing teeth with aesthetic, functional and predictable restoration

Question 13

what is assessed prior to extraction of a tooth for dental implant placement

Answer 13

prosthetic value of tooth
periodontal status
endodontic status

Question 14

what medications may compromise implant survival

Answer 14

SSRIs
PPIs
bisphosphonates
steroids

Question 15

what medical conditions can compromise implant success

Answer 15

radiotherapy
poorly controlled diabetes
CVS disease

Question 16

what are the implications of smoking with implants

Answer 16

increased failure and peri-implantitis
affects vascularity, fibroblasts, PMN function

Question 17

why do you need to wait for skeletal maturity to place an implant

Answer 17

relative infra-occlusion
suboptimal aesthetics
occlusal disharmony
implant fenestration

Question 18

what is a high smile line

Answer 18

> 2mm ST show

Question 19

what is a medium smile line

Answer 19

<2mm ST show

Question 20

what is a low smile line

Answer 20

lip covers >25% of teeth

Question 21

what is examined extra-orally

Answer 21

skeletal relationship
incisal cants
gingival cants
width of aesthetic zone

Question 22

what if the favourable gingival biotype

Answer 22

thick low scalloped

Question 23

what determines the presence of papilla

Answer 23

bone crest to contact point distance

Question 24

what is the favourable bone crest to contact point distance

Answer 24

<5mm

Question 25

what would restorations on the adjacent teeth mean for implants survival

Answer 25

risk of recession suboptimal aesthetics

Question 26

what happens if you have a wide edentulous span

Answer 26

lots of space to fill

Question 27

what are the disadvantages of having a narrow edentulous span

Answer 27

damage to adjacent teeth necrosis of bone effect on ST aesthetics

Question 28

what is the relevant maxillary anatomy

Answer 28

maxillary sinus nasal floor naso-palatine canal infra-orbital nerve

Question 29

what is the mandibular relevant anatomy

Answer 29

IAN canal mental foramen incisive canal lingual perforating vessels submandibular fossa

Question 30

what does implant positioning depend on

Answer 30

implant system gingival margin local anatomy prosthetic plan

Question 31

what is the minimum mesio-distal distance for implants

Answer 31

1.5mm

Question 32

why do implants need to be spaced a set distance from neighbouring teeth

Answer 32

lowers risk of damage to adjacent teeth lowers risk of bone necrosis and ST defects

Question 33

what is the bucco-palatal distance for an implant

Answer 33

>1mm bone labially >2mm HT/ST labial to implant

Question 34

what are the aids to planning used

Answer 34

study models diagnostic wax up surgical template essex clinical photographs CBCT surgical guide

Question 35

what is analogue planning

Answer 35

diagnostic wax up combined with CBCT

Question 36

what is digital planning

Answer 36

modern software used prosthetically and surgically to plan placement