INBDE (Integrated National Board Dental Examination) Practice Exam

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What is the tip size of a Size 15 D1 file?

.10mm
.15mm
.20mm
.25mm

The correct answer is: .15mm

A Size 15 D1 file refers to a dental instrument used for root canal treatment. The tip size of a Size 15 D1 file is determined by the file's diameter, measured in millimeters. The tip size refers to the width of the file's cutting edge. In this case, the correct tip size is .15mm. Options A, C, and D are incorrect because they represent different tip sizes, which would result in a different size file altogether. Option A is .10mm, which would be a smaller file than Size 15. Option C is .20mm, which would be a larger file, and Option D is .25mm, which would also be a larger file. Therefore, the correct answer is option B, .15mm.