This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Porcelain jacket crowns are contraindicated in 
Select and explain. 
A. Hypoplastic teeth, B. Excessive horizontal overlap, C. Decay is extensive but pulp is vital, D. Excessive vertical overlap with little horizontal overlap
D: Excessive vertical overlap with little horizontal overlap
Answer: D: Excessive vertical overlap with little horizontal overlap 
Explanation: None