High frequency generators
a. use invertors to increase pulse frequency.
b. produce similar output to three-phase with a single phase source.
c. achieve peak kVp faster than single- or three-phase generators.
d. all of the above
d. all of the above
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Fill in the blank(s) with the appropriate word(s).
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In which of the following tissues do osteoblasts and cementoblasts originate?
A) Alveolar bone B) Cementum C) Periodontal ligament D) Gingival epithelium E) Connective tissue
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