Exam 28: Root Morphology and Instrumentation Implications

When permanent teeth have more than one root, there is a portion of the root called the root trunk. The root trunk is between the furcation and the apical foramen.

Which of the following teeth is most likely to have a furcal concavity?

Which of the following single rooted teeth has the most convergence or taper of the proximal root surfaces toward the lingual?

What is the most likely anatomic cause of the clinical findings at No. 8 and No. 9?

The proximal surfaces of roots that are narrower on the lingual than the facial surface are more readily approached from the lingual because there is more proximal space there for the adaptation of instruments.

The root trunk on which aspect of a maxillary first molar is the longest?

Which of these teeth have two roots?

What term is used specifically for the bone between the roots of a molar?

How many distal root surfaces are there from a facial approach on a maxillary first molar?

Dentinal hypersensitivity may occur as a result of the removal of cementum during root instrumentation. The goal of root instrumentation is to remove all cementum.

The dental hygienist completes the instrumentation of the Class I furcation on the mesial of No. 14 from the lingual approach. What anatomic feature allows for this lingual access?

Which of the following teeth is most likely to have a facial and lingual root?

The name of the condition when teeth within an arch are so crowded that two adjacent teeth contact each other on the root and are connected by cementum is:

Which of the following statements about the clinical crown of a tooth is true?

Cervical enamel projections (CEPs) are "droplets" of enamel that form on the surface of the roots of multirooted teeth, generally near the area of a furcation. CEPs are most frequently observed on mandibular molars.

Which of the following general statements about the root of a single rooted tooth is correct?

The CEJ has the most proximal incisal/occlusal curvature on which of the following teeth?

Which of these teeth do not have a furcation on the mesial?

The area of No. 11 and No. 12 will provide instrumentation challenges due to which of the following canine and first premolar features?

To complete instrumentation on No. 14, the dental hygienist will: