Which of the following crown-to-root measurements is desirable when planning for a crown?

Question

Quizplus · Accepted Answer

A crown-to-root ratio of 2:1 is desirable when planning for a crown. This means that the height of the tooth's crown is twice the length of the tooth's root. This ensures that there is enough healthy root structure to support the crown and that the crown will have enough tooth structure to adhere to and maintain stability. A ratio of 1:2 would indicate potential for a longer root and shorter crown, which may not be ideal for a crown placement. A ratio of 2:3 or 2:4 could suggest the need for more extensive root canal therapy or that the tooth has significant loss of structure that may not be appropriate for a crown. A ratio of 4:1 could also indicate loss of significant tooth structure and may not provide enough stability for crown placement.

Which of the Following Crown-To-Root Measurements Is Desirable When Planning