W8 - Surgical Implant - Finn

Question 1

Why are “all on 4” implant setups a thing of the past? Problem?

Answer 1

“originally made as a cheaper alternative by surgeons who could not place graft”

Leaves no room for redundancy - if one implant fails on an all on 4, the entire prosthesis fails

Finn usually places 6 (if one fails, prosthesis will still function)

Question 2

What is a “composite defect” (OMFS)

• how do you treat / address this?

Answer 2

Osseous / soft tissue / combo deficiency in edentulous ridge

• Must be reconstructed either during or prior to implant placement

Question 3

Answer 3

Composite defect

• Osseous and soft tissue deficiency that must be reconstructed prior to implant placement

Question 4

How far away should the implant be from the subjacent tooth? Why?

Answer 4

1. 5 mm
   * To have sufficient blood supply

Question 5

How much distance should there be between implants?

Answer 5

At least 3 mm

Question 6

How much buccal bone should there be on each side of the implant?

Answer 6

At least 2 mm

Question 7

What depth should the occlusal surface of the implant be?

What is this distance called?

Answer 7

2.5 - 3 mm → Biologic width

Question 8

What happens if you violate biological width with implant? (Coronal aspect placed too deep, more than 3mm subgingival)

Answer 8

Will lead to recession / BL / composite defect

Question 9

How much bone should there be on each side of posterior implant?

Answer 9

1.5 mm buccal side and lingual/palatal side

Question 10

Anterior implant placement guideline (2)

Answer 10

• Anterior ridge of the implant shoulder should be positioned 1mm palatal to the point of emergence of the adjacent teeth
• Aim for 2mm of bone thickness on facial side

Question 11

What are the two main anatomic structures to consider when placing implants

Answer 11

IAN

Sinus

Question 12

What must you examine before considering implant placement?

Answer 12

Occlusion → look for aberrant tooth movements or over eruption

• ALWAYS TAKE STUDY MODELS - Can use study models to demonstrate this to patient for better understanding

Question 13

What radiograph should always be taken for general dentistry and implant consideration

Answer 13

OPG

Question 14

What is VME? Features (2)

Answer 14

Vertical mx excess

• Gummy smile
• lip incompetence

Question 15

What is the longest / most common size for mandibular implants?

Answer 15

10 mm

• Survivability of implants does not increase if >1 mm

Question 16

What is the longest / most common size for maxillary implants?

Answer 16

13 mm

Need to be longer due to the nature of the bone