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What is term used to described a film that was exposed twice and not erased?

______ Nasal septum 

______ Tori 

_____ Mylohyoid ridge 

The distribution of bone loss can be identified as being localized and/or generalized. Localized bone loss is more than 30% of all sites.

Arrange the following in order of increasing radiopacity (least to most radiopaque). Dentin Enamel Amalgam Cancellous bone Periodontal ligament space

Which of the following is true regarding cervical burnout and dental caries?

The white arrows point to a landmark. What is the name of this landmark?

______ Zygoma (malar) bone 

This radiographic landmark is radiopaque and is formed by the junction of the two maxilla bones located under the nose.