Which dental specialty became the first new dental specialty in 36 years when it was granted recognition by the ADA in 1999?

Question

Quizplus · Accepted Answer

The American Dental Association recognized the specialty of oral and maxillofacial radiology in 1999.The dental radiologist uses new and sophisticated imaging techniques to locate and diagnose diseases of the jaw,head,and neck.
Dental public health was a dental specialty in the United States in 1950.
Oral pathology was an established dental specialty before 1999.
Periodontics was recognized as a dental specialty in the United States in 1947.

Which Dental Specialty Became the First New Dental Specialty in 36