Management of Tooth Surface

Self-Study Examination

Instructions: After studying the text answer the following true/false or multiple choice questions.  Remember, there's only one answer to each question.

1. Tooth surface loss can be:

a) physiological
b) pathological
c) both a and b

2. Factors contributing to pathological tooth surface loss are:

a) erosion
b) abrasion
c) swallowing
d) a and b

3. Causes of non-carious tooth loss are erosion, abrasion, attrition and abfraction.

a) true
b) false

4. Abfraction is caused by hard toothbrushes.

a) true
b) false

5. The signs of active bruxism include:

a) tongue scalloping
b) cheek ridging
c) marked wear of occlusal surfaces
d) a and b

6. Erosion is a chemical process in which the tooth surface is removed in the absence of plaque. Erosive factors may be intrinsic or extrinsic.

a) true
b) false

7. Pathological tooth surface loss may result in the following:

a) pain and/or sensitivity, loss in vertical dimension
b) prolonged life of dental restorations
c) hypermobilty and drifting
d) a and c

8. A sign of active bruxism is tooth surface wear.

a) true
b) false

9. Bruxism is best managed in the following treatment sequence:

a) occlusal equilibration followed by splint therapy
b) successful stabilization splint usage followed by occlusal therapy
c) elimination of interferences in the static and dynamic occlusion followed by splint therapy
d) a and c

10. Cervical lesions that have sharp defined margins and a smooth hard surface are caused by:

a) attrition
b) abrasion
c) erosion
d) all of the above

11. Erosive lesions cause “cupping” to form in the dentin.

a) true
b) false

12. If wear is primarily attritional, then dentin tends to wear at same rate as the surrounding enamel.

a) true
b) false

13. When erosion affects the palatal surfaces of upper maxillary teeth, there is often a central area of exposed dentin surrounded by a border of unaffected enamel.

a) true
b) false

14. Dento-alveolar compensation can occur as a result of:

a) a physiological reduction of the vertical height of teeth
b) an increase in the freeway space
c) pathological wear of teeth
d) a and c

15. Crown lengthening procedures are best suited for patients suffering from pathological tooth surface loss where the freeway space has been increased.

a) true
b) false