6. Bacteria involved in the onset of caries are those capable of producing weak organic acids that demineralise enamel. These acids are produced when the bacteria digest oral food debris. Which one of the following food components is the source of these orga
Polysaccharides
Non-milk extrinsic sugars
Aspartame
Lactose
Fructose
7. The gingivae form the membrane covering of the alveolar processes in the mouth. Which one of the following feature is not found when examining healthy gingivae?
Pink Colour
Tight Gingival Cuff
Knife-Edge Papillae
Gingival Crevice of 4mm
Stippled Surface
8. Any patient with poor oral hygiene may develop periodontal disease, but some patients are more at risk than other. This is often because they have been prescribed drugs that cause gingival hyperplasia, making plaque control difficult. Which one of the fo
Nystatin
Aspirin
Propranolol
Nifedipine
Metronidazole
9. When the body undergoes a disease process or is attacked by a pathogenic organism, the tissues involved may exhibit one of several outcomes. Which one of the following outcomes presents as a slow growing abnormal sac of fluid within the tissues?
Ulcer
Cyst
Benign Tumour
Infection
Malignant Tumour
10. A 19-year-old patient attends the surgery as an emergency, with severe oral pain, halitosis, and ulcerated gingivae. The dentist diagnoses a specific oral infection. Which one of the following microorganisms is most likely to be involved?
Borrelia Vincenti
Herpes Simplex
Actinomyces
Candida Albicans
Lactobacillus
11. A 35-year-old patient attends for a routine dental examination during which the dentist detects the presence of calculus in the patient's mouth. In which one of the following areas is this most likely to be found?
Palatal Area of Incisors
Lingual Area of Incisors
Buccal pits
Lingual Area of Incisors
Occlusal Fissures
12. When attacked by pathogens, the body has several lines of defence that should prevent a disease from developing in a healthy person. Which one of the following is the last line of defence before the disease process begins?
Skin
Mucous Membrane
Sweat
Inflammatory Response
Saliva
13. A mother attends to seek advice on the necessity of fluoride drops for her young child. The dentist advises that it is not required because the region has a fluoridated water supply. Which one of the following is the most likely concentration of fluoride
10ppm
1 ppm
0.1ppm
0.01ppm
100ppm
14. Oral cancer is a serious, often fatal, condition that appears to be occurring more frequently in younger patients nowadays. Which one of the following has not been identified as a causative factor in this disease?
High Vitamin A
Betel Nut Chewing
Sunlight
High Alcohol Intake
High Fat Diet
15. While giving oral health dietary advice, the clinician is likely to recommend that a patient avoids excessive consumption of which one of the following in order to reduce the occurrence of enamel demineralisation?
Sulphuric Acid
Citric Acid
Ascorbic Acid
Lactic Acid
Phosphoric Acid
16. Many bacteria have been identified as causing some form of periodontal disease. Which one of the following species is not associated with this condition?
Porphyromonas
Staphylococcus
Treponema
Bacillus
Actiomyces
17. Tooth surface loss affecting the occlusal surfaces of the lower molars and the palatal or labial surfaces of the upper incisors is usually due to regular acid attacks. Which one of the following disorders would not have this effect on the teeth?
Gastric Reflux
Anorexia
Hiatus Hernia
Duodenal Ulcer
Bulimia
18. Before being allowed to work at the chair side in the dental surgery, all clinical dental personnel require to be vaccinated against a range of pathogenic microorganisms. It is most likely that personnel will have developed an acquired immunity to which o
Tetanus
Chickenpox
AIDS
Hepatitis B
Rubella
19. In patients suffering from chronic periodontitis, both supragingival and subgingival calculus may be present at the same time. Which one of the following instruments is used specifically to remove subgingival calculus?
Ultrasonic Scaler
Sickle Scaler
Curette
Push Scaler
Jaquette Scaler
20. Thrush is a fungal disease that can affect the oral cavity, resulting in conditions such as denture stomatitis. It is usually successfully treated by the use of antifungal agents, in form of tablets, lozenges or oral rinses. Which one of the following dru
