The Low Surface Energy of the Titanium Abutment and Its

question 17

Multiple Choice

The low surface energy of the titanium abutment and its attraction of proteins with low surface affinity account for supragingival calculus.Metabolic end products from oral spirochetes may cause cytotoxicity to gingival tissues by producing and releasing proteolytic enzymes and trypsin-like enzymes.

• A) The first statement is true;the second statement is false.
• B) The first statement is false;the second statement is true.
• C) Both statements are true.
• D) Both statements are false.

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Definitions:

Obsession

Persistent and intrusive thoughts, impulses, or images that cause significant anxiety or distress.

Compulsions

Repetitive behaviors or mental acts that an individual feels driven to perform in response to an obsession, or according to rules that must be applied rigidly.

Repetitive Behaviors

Actions performed over and over again, which can be a characteristic of certain psychological conditions, such as OCD.

Obsessive Thoughts

Intrusive, unwanted thoughts that often cause distress or anxiety and may lead to compulsive behaviors in an attempt to alleviate the distress.