Question 1

Peri-implantitis is caused by:

Accepted Answer

Peri-implantitis is primarily caused by ineffective plaque removal, resulting in an inflammatory response that leads to destruction of the surrounding soft and hard tissues. While occlusal forces and poor osseointegration can contribute to the development of peri-implantitis, they are not the primary cause. Horizontal bone loss is a result of peri-implantitis, rather than its cause.

Question 2

If the temperature during the osteotomy exceeds 37° C,then _____ could occur.

Accepted Answer

Exceeding 37°C during an osteotomy can lead to tissue damage, protein coagulation, and inflammation, making all options applicable.

Question 3

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

Accepted Answer

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

Question 4

Special instruments are needed to effectively clean titanium dental implants.These instruments are made of:

Accepted Answer

Both Teflon and plastic instruments are recommended for cleaning titanium dental implants as they are gentle on the implant surface and do not scratch or damage the titanium. Ceramic instruments are not typically used as they are harder and can potentially damage the implant surface.

Question 5

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 6

A prosthesis is permanently attached to the implant by:

Accepted Answer

A prosthesis can be permanently attached to an implant by either cement or screw. Welding is not a common method of attachment for dental implants. Therefore, both option A and B are correct, and option E is the best choice. Option D is not completely correct as welding is not a common method of attachment for dental implants.

Question 7

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 promote greater bone-implant contact because they provide more surface area for bone cells to adhere and grow onto. Additionally, greater surface area allows for increased mechanical interlocking between the bone and implant. Therefore, surfaces with larger surface areas also promote greater bone-implant contact.

Question 8

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, making option A correct.

Question 9

The most common ceramic implants are made of:

Accepted Answer

Zirconia is the most common ceramic material used for dental implants due to its excellent biocompatibility, mechanical properties, and aesthetic qualities. Quartz and silica are not commonly used due to their poor mechanical strength, and methyl methacrylate is a polymer material used for temporary implants rather than permanent replacements.

Question 10

When preparing the access for an implant,it is imperative that the temperature of the bone not exceed _____°

Accepted Answer

Exceeding 37°C can cause bone necrosis, so it's crucial to keep the temperature below this threshold during implant procedures.

Question 11

Ceramic implants are held in place by:

Accepted Answer

The answer of Ceramic implants are held in place by:
...

Question 12

Early implant strategies were painful.They:

Accepted Answer

Early implant strategies were painful because they required aggressive techniques to anchor the implant into the bone. This often led to post-operative pain and discomfort for the patient. While they did use biocompatible materials, and some were successful long term, the focus on aggressive techniques meant that they had a higher incidence of postoperative infection.

Question 13

Which of the following statements is correct regarding implant success?

Accepted Answer

Implant success rates are influenced by the density and quantity of bone, with lower success rates in areas with poor bone quality or quantity.

Question 14

Titanium alloy differs from commercially pure titanium,because titanium alloy also contains:

Accepted Answer

Titanium alloy contains both 6 wt % aluminum and 4 wt % vanadium, making it different from commercially pure titanium. Therefore, option D (both A and B) is the correct choice. Option E (both B and C) is incorrect as it does not include the correct amount of aluminum in the alloy.

Question 15

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

Accepted Answer

The answer of Which of the following statements is(are)true about...

Question 16

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

Both statements are true because scratches or disruptions can compromise the implant surface, and contamination can hinder osseointegration.

Question 17

Implants are constructed from:

Accepted Answer

Titanium is the best choice for implants because it is biocompatible, lightweight, strong, and resistant to corrosion. It also integrates well with living bone tissue, allowing for osseointegration, the process by which the implant becomes fused with the bone. Stainless steel and platinum are both heavier and can cause allergic reactions, while gold is softer and less durable.

Question 18

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.

Quiz 15: Dental Implants