Final answer:
The shape of a cusp tip when the mesio-cusp ridge is greater than the disto-cusp ridge is typically pointed, indicating a pronounced profile of the cusp. Option c is the correct answer.
Step-by-step explanation:
When considering the morphology of teeth, specifically the cusp tips, comparing the mesio-cusp ridge (MCR) and the disto-cusp ridge (DCR) helps to determine the shape of the cusp.
If the MCR is greater than the DCR, the shape of the cusp tip can be inferred based on the general characteristics of cusps.
- The pattern is colorful and sharp would suggest a distinct, well-defined cusp.
- When the pattern is faded and curved, this would imply a more worn or rounded cusp.
- Teeth with a rounder shape are more associated with grinding and mashing, such as premolars that have rounded cusps useful for mashing foods.
- Cusps can vary in shape, but typically when the MCR is greater than the DCR, the cusp is more pointed.
Considering these characteristics, the correct option for a cusp tip when MCR > DCR would be more pointed rather than sharp, blunt, or rounded, as it would maintain a pronounced profile.