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
Cephalometrics is useful in assessing all of the following relationships except: 
Select and explain. 
A. Tooth to tooth, B. Bone to bone, C. Tooth to bone, D. Soft palate to gingiva
D: Soft palate to gingiva
Answer: D: Soft palate to gingiva 
Explanation: Cephalometric analysis
Cephalometric analysis is the process of evaluating skeletal, dental and soft tissue relationship of a patient by comparing measurements performed on the patient’s cephalometric tracing with population norms for respective measurement(s), to come to a diagnosis of the patients’ orthodontic problem.
The cephalometric analysis essentially involves evaluation of the patient’s:

Skeletal pattern
Dentition and its pattern (denture pattern)
Soft tissue pattern of face
Nasopharyngeal airway
Growth trend.

Ref: Orthodontics: Diagnosis and Management of Malocclusion and Dentofacial Deformities, 3e, Om P. Kharbanda pdf no 973