1.
Which tooth tissue is the most highly mineralised?
Correct Answer
A. Enamel
Explanation
Enamel is the most highly mineralized tooth tissue. It is the outermost layer of the tooth and is composed of hydroxyapatite crystals, which give it its hardness. Enamel is the hardest substance in the human body and provides a protective layer for the underlying dentin and pulp. Its high mineral content makes it resistant to wear and decay.
2.
The enamel surface will break down when the pH falls below which number?
Correct Answer
C. 5.5
Explanation
The enamel surface of teeth is highly susceptible to acid erosion. When the pH level in the mouth drops below a certain threshold, it can cause the enamel to break down. The correct answer is 5.5, as this is the pH level at which the enamel begins to deteriorate. A pH level below 5.5 indicates an acidic environment that can lead to enamel erosion and tooth decay.
3.
Tick all of following with a pH above 5 from the list below:
Correct Answer(s)
A. Water
B. Sugar water
C. Flavoured milk
Explanation
Water, sugar water, and flavored milk have a pH above 5 because they are all slightly acidic. Coca cola and orange juice, on the other hand, are both acidic with a pH below 5.
4.
All of the following are a vital roles of saliva, except?
Correct Answer
A. Whitens teeth
Explanation
Saliva plays several important roles in the oral cavity, including neutralizing acid challenges, flushing food and bacteria, acting as a lubricant, and delivering essential minerals to the tooth surface. However, whitening teeth is not one of the vital roles of saliva. Saliva does not have a direct whitening effect on teeth, as tooth color is primarily determined by the underlying dentin and enamel. Whitening treatments usually involve bleaching agents that penetrate the tooth structure to remove stains and lighten the color.
5.
Oral balance is the equilibrium that exists between the demineralizing effect on tooth surfaces caused by acids, balanced by saliva, with buffering and remineralizing benefits?
Correct Answer
A. True
Explanation
The explanation for the given correct answer is that oral balance refers to the balance between the demineralizing effect of acids on tooth surfaces and the protective effects of saliva, which includes buffering and remineralizing benefits. This equilibrium is important for maintaining the health of teeth and preventing tooth decay. Therefore, the statement that oral balance is the equilibrium between the demineralizing effect on tooth surfaces caused by acids, balanced by saliva, with buffering and remineralizing benefits is true.
6.
Tick all of the parameters included in a complete saliva test from the list below:
Correct Answer(s)
A. Hydration
B. Viscosity
C. pH
D. Quantity
E. Quality
Explanation
A complete saliva test includes the measurement of hydration, viscosity, pH, quantity, and quality of saliva. These parameters provide valuable information about a person's oral health and overall well-being. Hydration levels indicate the body's hydration status, viscosity measures the thickness of saliva, pH levels indicate acidity or alkalinity, quantity reflects the amount of saliva produced, and quality assesses the composition and presence of any abnormalities. By evaluating these parameters, healthcare professionals can gain insights into various conditions such as dehydration, dry mouth, acidity levels, and potential oral health issues.
7.
A saliva test examines both the stimulated and unstimulated saliva, and it is important for a patient to not consume food or dink at least one (1) hour prior to the scheduled saliva check.
Correct Answer
A. Both statements are true
Explanation
The explanation for the given correct answer, "Both statements are true," is that a saliva test does indeed examine both stimulated and unstimulated saliva. Additionally, it is important for a patient to refrain from consuming food or drink for at least one hour prior to the test to ensure accurate results.
8.
A typical resting saliva flow rate is around 0.4ml/min or under _____________ seconds.
Correct Answer
A. 60
Explanation
A typical resting saliva flow rate is around 0.4ml/min or under 60 seconds. This means that in less than a minute, a person produces approximately 0.4 milliliters of saliva while at rest.
9.
Low test results for stimulated saliva may be related to all of the following, except?
Correct Answer
A. Level of appetite
Explanation
Low test results for stimulated saliva may be related to salivary gland pathology, head and neck or total body radiation, and diabetes mellitus. However, the level of appetite does not directly affect the production of saliva. Saliva production is mainly regulated by the salivary glands and can be influenced by various factors such as medications, dehydration, and certain medical conditions.
10.
All of the following are prevention strategies for decreased saliva function, except?
Correct Answer
B. Increased caffeine intake
Explanation
Increased caffeine intake is not a prevention strategy for decreased saliva function because caffeine can actually contribute to dry mouth. Caffeine is a diuretic, which means it increases urine production and can lead to dehydration. Dehydration can cause a decrease in saliva production, leading to dry mouth. Therefore, increasing caffeine intake would not be beneficial in preventing decreased saliva function.
11.
The most common brand of supplements containing (CPP-ACP) is __?
Correct Answer
A. Tooth mousse
Explanation
Tooth mousse is the most common brand of supplements containing CPP-ACP. CPP-ACP stands for casein phosphopeptide-amorphous calcium phosphate, which is a special form of calcium and phosphate that helps to remineralize and strengthen tooth enamel. Tooth mousse is applied topically and helps to prevent tooth decay, protect against acid erosion, and promote the remineralization of teeth. It is commonly used by dental professionals and recommended for individuals with a high risk of dental caries or enamel erosion.