Ch 31 Dental Implants

Question 1

Bone Classification D1-5

Dentistry of bone determines factors such as (2)

Answer 1

D1 dense cortical bone
D2 thick dense to porous cortical bone on crest and coarse trabecular bone within
D3 thin porous cortical bone on crest and fine trabecular bone within
D4 fine trabecular bone
D5 immature non-mineralized bone

Time frame for integration
Window of time for prosthetic loading

Question 2

Biomechanics force

Answer 2

Bone will resorb wen teeth removed
Dental implants preserve bone through function- supplies needed load and stress

Question 3

Regeneration

Options

Answer 3

Ridge augmentation
Maxillary sinus augmentation “sinus lift”

Autograft- bone from pt from donor site
Allograft- bone from another human
Xenograft- bone from another species
Alloplast- synthetic

Question 4

Osseointegration

Stages (3)

Answer 4

Direct bone anchorage to an implant body. No intervening CT

Initial healing up to 1 yr
Second bone actively remodels up to 5 yrs
Third stage fewer osteocytes and less bone remodeling

Question 5

Fibrous Encapsulation

Indicates what and what is evident ?

Answer 5

Infusion of CT cells bw implant body and surrounding bone

Failure of osseointegration

Mobility is evident

Question 6

Implant Soft Tissue Interface: biologic seal

Answer 6

Exists to prevent microorganisms and inflammation agents from entering tissues

Question 7

Bioloigic width around an implant

Answer 7

3-4mm slightly longer than natural tooth at 2

Question 8

Peri implant epithelium is similar in function to JE (T or F)

Answer 8

True

Question 9

Reduced blood supply and weaker peri implant epithelium at interface reduces resistance to bacterial invasion and penetration of the

Answer 9

Probe

Question 10

Subperiosteal

What it is and why it’s used

Answer 10

Custom fabricated framework of metal (titanium or vitallium) that rests over bone of Mandible or max, under the periosteum

If removable denture cannot be retained bc of lack of bone

Question 11

Transosseus

Answer 11

Penetrated both cortical plates, passes through full thickness of cortical bone

Aka mandibular staple

Stainless steel, ceramic coated materials and Titanium alloy

Used when pt has an edentulous mandible with little mandibular bone

Question 12

Endosseous Implant

Current forms

When is it placed

Answer 12

Support for replacement of complete or partial loss of teeth

Root form or cylindrical (threaded smooth perforated or solid)

Immediate placement or two phase

Question 13

Remodeling of bone of up to ___mm typically occurs in the first year and ___mm annually thereafter

Answer 13

1.5
0.2

Question 14

If a pt has residual cement where do you refer them

Answer 14

Back to their surgeon

Question 15

Peri implant mucositis vs Perimplantitis

Answer 15

No bone loss!
Reversible fixed with better habits etc

Crestal Bone loss
Needs guided bone regeneration