Chapter 13: Implant Materials

1.) The success rate of endosseous implants in the maxilla is ________ % versus ________ % in the mandible.

a) 85; 90

b) 90; 85

c) 90; 95

d) 95; 90

a) 85; 90

b) 90; 85

c) 90; 95

d) 95; 90

2.) The ________ implant is the most commonly used in dentistry today.

a) supraperiosteal

b) subperiosteal

c) transosteal

d) endosseous

a) supraperiosteal

b) subperiosteal

c) transosteal

d) endosseous

3.) What is the order for assembling endosseous implant components during placement?

1. implant crown

2. implant fixture

3. implant abutment

4. healing abutment

a) 1, 2, 3, 4

b) 1, 4, 3, 2

c) 4, 2, 1, 3

d) 2, 4, 3, 1

a) 1, 2, 3, 4

b) 1, 4, 3, 2

c) 4, 2, 1, 3

d) 2, 4, 3, 1

4.) Why are endosseous implants more successful in the mandible than in the maxilla?

a) blood flow is better in the mandible

b) gravity drags maxillary implants from their sockets

c) the bone in the mandible is generally much denser than in the maxilla

d) there is a greater lateral component of force on maxillary teeth than on mandibular teeth

a) blood flow is better in the mandible

b) gravity drags maxillary implants from their sockets

c) the bone in the mandible is generally much denser than in the maxilla

d) there is a greater lateral component of force on maxillary teeth than on mandibular teeth

5.) Which of the following metals demonstrates the highest level of biocompatibility with oral tissue for dental implants?

a) nickel

b) titanium

c) stainless steel

d) molybdenum

a) nickel

b) titanium

c) stainless steel

d) molybdenum

6.) Compare a ceramic implant to a titanium implant.

a) ceramic implants are not radiopaque like titanium and are more difficult to analyze on radiograph

b) ceramic implants integrate with the bone more intimately than titanium implants

c) titanium implants integrate chemically with the bone resulting in greater retention

d) ceramic implants are brittle and there is a greater risk of fracture

a) ceramic implants are not radiopaque like titanium and are more difficult to analyze on radiograph

b) ceramic implants integrate with the bone more intimately than titanium implants

c) titanium implants integrate chemically with the bone resulting in greater retention

d) ceramic implants are brittle and there is a greater risk of fracture

7.) During a two-stage endosseous surgical implant placement procedure, the healing abutment is placed about ________ following placement of the implant fixture.

a) 1 week

b) 1 month

c) 3 months

d) 1 year

a) 1 week

b) 1 month

c) 3 months

d) 1 year

8.) What does the term immediate-placement surgical procedure mean?

a) the top of the implant fixture projects through the soft tissue at the time of surgery and the healing abutment is placed

b) the implant fixture is placed directly into the new socket when the implant procedure involves the extraction of a tooth

c) a provisional crown is placed on the implant fixture immediately after surgical placement of the fixture

d) the healing abutment is placed during the second stage of the surgical procedure

a) the top of the implant fixture projects through the soft tissue at the time of surgery and the healing abutment is placed

b) the implant fixture is placed directly into the new socket when the implant procedure involves the extraction of a tooth

c) a provisional crown is placed on the implant fixture immediately after surgical placement of the fixture

d) the healing abutment is placed during the second stage of the surgical procedure

9.) The _____________ attaches to the impression abutment and is used to replicate the implant fixture for the laboratory cast.

a) cover screw

b) implant analog

c) healing abutment

d) impression abutment coping

a) cover screw

b) implant analog

c) healing abutment

d) impression abutment coping

10.) How do today’s endosseous implant fixtures contrast to the early implant fixtures?

1. early implant fixtures had flat tops allowing bacterial contamination while current implant fixtures use a conical connection that provides a seal against bacteria

2. there was a greater chance of inflammatory response with earlier implant fixtures compared to the ones used today

3. most implant fixtures used today have smooth surfaces with holes to allow for better integration with bone

4. current implant fixtures use sharp threads that will cut into bone allowing for greater stability of the implant

a) 1, 2, 3, 4

b) 1, 2, 3

c) 1, 2, 4

d) 1, 4

a) 1, 2, 3, 4

b) 1, 2, 3

c) 1, 2, 4

d) 1, 4

11.) Which of the following is true concerning home care for the implant patient?

a) home care regimens should be customized for each patient

b) all implant patients should receive standardized instructions

c) plaque-disclosing agents must never be used with implant patients

d) wooden plaque removers must not be used because they will scratch implants

a) home care regimens should be customized for each patient

b) all implant patients should receive standardized instructions

c) plaque-disclosing agents must never be used with implant patients

d) wooden plaque removers must not be used because they will scratch implants

12.) Which of the following should occur during the hygiene visit for routine implant assessment and maintenance?

a) routine probing is recommended

b) the patient should return to the dental office at 12-month intervals

c) the implant prosthesis should be removed for cleaning and maintenance

d) periodic radiographs are taken to check the bone level surrounding the implants

a) routine probing is recommended

b) the patient should return to the dental office at 12-month intervals

c) the implant prosthesis should be removed for cleaning and maintenance

d) periodic radiographs are taken to check the bone level surrounding the implants

13.) Which of the following are recommended for use with titanium implants?

a) air polishers

b) steel curettes

c) ultrasonic scalers

d) plastic curettes and scalers

a) air polishers

b) steel curettes

c) ultrasonic scalers

d) plastic curettes and scalers

14.) Failure of the implant that occurs after the initial integration is often caused by which condition?

1. bacterial infection extending from the peri-implant tissues into the bone

2. excessive brushing and flossing of the implant

3. overloading of the implant during function

a) 1, 2, 3

b) 1, 2

c) 1, 3

d) 2

a) 1, 2, 3

b) 1, 2

c) 1, 3

d) 2

15.) How would you explain the concept of immediate loading of an endosseous implant?

1. the implant gets its stability in bone from the loading rather than osseointegration

2. immediate loading could be accomplished if the implant fixture is long and wide enough to engage the bone

3. immediate loading would cause movement which would result in failure to integrate with bone and loss of the implant

4. the success rate for implants with immediate loading is higher than implants that are allowed 3-6 months of healing prior to placement

a) 1, 2, 3, 4

b) 1, 2, 3

c) 2, 3, 4

d) 1, 2

e) 2

a) 1, 2, 3, 4

b) 1, 2, 3

c) 2, 3, 4

d) 1, 2

e) 2

16.) What is the advantage of cone beam computed tomography (CBCT)?

a) it shows the surgical area in accurate two-dimensional images

b) it magnifies dental structures by about 25% lowering the risk of errors

c) the bone density and thickness and height of the ridge can be assessed

d) the surgeon can simulate placement of the implant

a) it shows the surgical area in accurate two-dimensional images

b) it magnifies dental structures by about 25% lowering the risk of errors

c) the bone density and thickness and height of the ridge can be assessed

d) the surgeon can simulate placement of the implant

17.) Which type of impression is the easiest for the inexperienced clinician?

a) digital impression

b) open-tray impression

c) closed-tray impression

d) conventional impression

a) digital impression

b) open-tray impression

c) closed-tray impression

d) conventional impression

18.) What acrylic surgical guide is used for accurate placement of an implant?

a) splint

b) splice

c) stent

d) screw

a) splint

b) splice

c) stent

d) screw

19.) Why would a bone graft be considered for an implant patient?

1. improve the life span of the implant

2. to add stability to an immediate implant

3. inadequate amount of bone at the implant site

4. add bone depth between the maxillary sinus and the alveolar ridge

a) 1, 2, 3, 4

b) 1, 2, 4

c) 1, 3, 4

d) 2, 3, 4

a) 1, 2, 3, 4

b) 1, 2, 4

c) 1, 3, 4

d) 2, 3, 4

20.) If polishing an implant attachment is deemed necessary, what would the hygienist use?

a) flour pumice

b) only a rubber cup

c) a slurry of tin oxide

d) medium to coarse paste

a) flour pumice

b) only a rubber cup

c) a slurry of tin oxide

d) medium to coarse paste

21.) Failure of an implant after initial integration is often attributed to what cause?

a) unnatural forces on the implant

b) poor surgical technique

c) poor quality of bone

d) bacterial infection

a) unnatural forces on the implant

b) poor surgical technique

c) poor quality of bone

d) bacterial infection

22.) Define the following terms:

• allografts

• alloplasts

• autografts

• xenografts

• allografts: grafts harvested from a cadaver

• alloplasts: grafts made from inert, synthetic materials

• autografts: grafts harvested from the patient’s body

• xenografts: grafts obtained from animals

RQ

1.)

RQ

2.)

RQ

3.)

RQ

4.)

RQ

5.)

RQ

6.)

RQ

7.)

RQ

8.)

RQ

9.)

RQ

10.)

RQ

11.)

RQ

12.)

RQ

13.)

RQ

14.)

RQ

15.)

RQ

16.)

RQ

17.)

RQ

18.)

RQ

19.)