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
[{'content': 'The indications of cast metal inlay are all except \nSelect and explain. \nA. The cavity’s width exceeds ⅓ the intercuspal distance, B. Strong, self-resistant cusps present, C. Occlusal surfaces are not to be changed, D. The tooth is not to be used as an abutment', 'role': 'user'}, {'content': "Answer: A \nExplanation: Inlays\n\nAn inlay can be defined as a restoration which has been constructed out of mouth from gold, porcelain or other materials and then cemented into the prepared cavity of a tooth.\n\nIndications\n\nThe cavity's width does not exceed one-third the intercuspal distance.\nStrong, self-resistant cusps are there.\nMinimum or no occlusal facets\xa0 present and if present, are confined to the occlusal surfaces only.\nThe tooth is not to be used as an abutment for a fixed or removable prosthesis.\nOcclusal or occluding surfaces are not to be changed by the restorative procedure.\n\nMDS Prep Bytes (Cast Restoration – Inlay)", 'role': 'assistant'}]