The imaginary line through all the buccal cusp tips of the mandibular posterior teeth is called which line?

The imaginary line through all the buccal cusp tips of the mandibular posterior teeth is called which line?

• A. Plane of occlusion
• B. BO line
• C. LO line
• D. CF line

Answer: (B)

In occlusion analysis, there is a specific reference line that runs through the buccal cusp tips of the mandibular posterior teeth. This line is the BO line. It serves as a simple transverse reference to evaluate how the buccal cusps align across the lower arch and how the occlusal surfaces relate to each other. The plane of occlusion, by contrast, is a surface that represents the overall functional occlusal plane, not a single line. The LO line would refer to a line through lingual cusp tips, and CF line represents a different reference line not defined by the buccal cusps. So the imaginary line through all buccal cusp tips of the mandibular posterior teeth is the BO line.

In occlusion analysis, there is a specific reference line that runs through the buccal cusp tips of the mandibular posterior teeth. This line is the BO line. It serves as a simple transverse reference to evaluate how the buccal cusps align across the lower arch and how the occlusal surfaces relate to each other. The plane of occlusion, by contrast, is a surface that represents the overall functional occlusal plane, not a single line. The LO line would refer to a line through lingual cusp tips, and CF line represents a different reference line not defined by the buccal cusps. So the imaginary line through all buccal cusp tips of the mandibular posterior teeth is the BO line.