Question 1

Endosseous implants provide an esthetic substitute for a lost or missing tooth. They are placed to restore lost centric occlusion.

Accepted Answer

Endosseous implants do provide an esthetic substitute for a lost or missing tooth, but they are not specifically placed to restore lost centric occlusion.

Question 2

In what way were early implant strategies painful?

Accepted Answer

Early implant strategies required aggressive techniques, which often resulted in pain for the patient during and after the procedure.

Question 3

Scratches or other disruption of the original manufacturer's oxide layer on the surface of endosseous implants are discouraged. Any contamination of the original surface will increase the risk of failure of the implant to osseointegrate.

Accepted Answer

The oxide layer on the surface of endosseous implants plays a crucial role in osseointegration. Scratches or disruptions can compromise this process, increasing the risk of implant failure. Both statements are correct.

Question 4

Which of the following statements is correct regarding implant success?

Accepted Answer

The answer of Which of the following statements is correct...

Question 5

Special instruments are needed to effectively clean titanium dental implants. What are these instruments made of?

Accepted Answer

Teflon® and plastic instruments are recommended for cleaning titanium dental implants to avoid scratching or damaging the implant surface.

Question 6

Prior to preparing the surgical site, how does the dentist determine where to place the implant?

Accepted Answer

Radiographs are typically used to determine the ideal location and angle for implant placement. However, to ensure accuracy and precision, dentists may also use templates or custom stents to guide the placement of the implant. A mm ruler may be used to measure the depth and width of the implant site, but it is not typically used to determine the exact location of the implant.

Question 7

The thickness of most ceramic coatings on implants ranges from _____ to _____ microns.

Accepted Answer

The answer of The thickness of most ceramic coatings on...

Question 8

Which of the following statements is(are) true about the surface of commercially pure titanium or titanium alloy?

Accepted Answer

Commercially pure titanium and titanium alloys are covered with a layer of titanium oxides, and oxides rich in oxygen are typically found closer to the surface.

Question 9

How long should an extraction site heal prior to placing an implant?

Accepted Answer

An extraction site typically takes 6 months to fully heal and for the bone to remodel before an implant can be placed. This allows for proper osseointegration to occur, ensuring the implant is stable and successful in the long term.

Question 10

Of the following types of implants, which one is seldom used today?

Accepted Answer

The answer of Of the following types of implants, which...

Question 11

Ceramic coatings improve bone-implant bond strengths. Their long-term stability in service is uncertain.

Accepted Answer

Ceramic coatings are known to enhance the bond strength between bone and implants, which is crucial for the success of orthopedic and dental implants. However, the long-term stability of these coatings under physiological conditions remains a subject of ongoing research and debate, making the second statement also correct.

Question 12

Which of the following is not a true statement regarding ceramic-coated implants?

Accepted Answer

Ceramic-coated implants are not necessarily preferred by clinicians over titanium implants. The choice of implant material depends on the specific patient and clinical situation.

Question 13

By which method are ceramic implants retained?

Accepted Answer

The answer of By which method are ceramic implants retained?
...

Question 14

What are the most common ceramic implants made of?

Accepted Answer

Zirconia is the most common ceramic material used for dental implants due to its high strength, durability and biocompatibility. Silica, quartz and feldspar are also ceramic materials, but they are not commonly used for dental implants.

Question 15

In osseointegration, a layer of fibrous tissue remains to help cushion the implant. Osseointegration involves ankyloses of the implant.

Accepted Answer

Osseointegration involves the direct structural and functional connection between living bone and the surface of a load-bearing artificial implant, without a fibrous tissue layer.

Question 16

What could occur if the temperature during the osteotomy exceeds 37° C?

Accepted Answer

When the temperature during an osteotomy exceeds 37° C, it can lead to tissue damage, inflammation, and an increased risk of post-operative infection, making all of the options correct.

Question 17

Osseointegration occurs when the bone grows to within _________ of the implant interface.

Accepted Answer

Osseointegration occurs when the bone grows to within 100 angstroms of the implant interface.

Question 18

What causes peri-implantitis?

Accepted Answer

Peri-implantitis is primarily caused by ineffective plaque removal, leading to bacterial infection and inflammation around the dental implant.

Question 19

How does titanium alloy, used for implants, differ from commercially pure titanium?

Accepted Answer

Titanium alloy used for implants generally contains 6% aluminum and 4% vanadium, whereas commercially pure titanium contains less than 0.1% of other elements. Therefore, option D, which includes both the correct alloying elements, is the best choice. Option B contains only one of the correct alloying elements, while option C contains an incorrect percentage of aluminum. Option A contains the correct aluminum percentage but does not include vanadium.

Question 20

In general, _______ surfaces and those with ______ surface areas promote the greatest amounts of bone-implant contact during osseointegration of endosseous implants.

Accepted Answer

Rougher surfaces provide greater surface area for bone to grow into and therefore promote greater bone-implant contact during osseointegration. Additionally, greater surface area also allows for more mechanical interlocking between the implant and the surrounding bone.

Quiz 15: Dental Implants