Which of the following statements is correct?
a. Localized bone loss occurs throughout both arches simultaneously.
b. Horizontal bone loss is also known as angular bone loss.
c. Horizontal bone loss occurs in a plane perpendicular to the CEJ of adjacent teeth.
d. Vertical bone loss is also known as angular bone loss.
d. Vertical (angular) bone loss occurs in a vertical direction where the resorption of one tooth root sharing the interdental septum is greater than that of the other tooth root sharing the septum.
Health Professions