There is nothing in the test regulation in Dental Admission Testing Program Examinee Guide on ada site that says you cannot erase. If it's anything, maybe that employee need to be erased or you file a misconduct against that employee.
1. No personal belongings or miscellaneous items are permitted in the secure testing area. Any personal belongings brought to the test center must be stored in a designated locker or storage cubicle. Storage facilities are limited. Upon reasonable suspicion, your personal belongings may be inspected. Notes or any materials that appear to contain test content may be confiscated.
2. Items that are prohibited from the secure testing area include, but are not limited to the following:
a. Books, notes, study materials or scratch paper; dental instruments, models or materials
b. Slide rules, paper, calculating devices, rulers or other measuring devices
c. Electronic devices, such as telephones, pagers, recording devices, personal digital assistants (PDAs), radios or stereos with headsets
d. Handbags; purses, wallets, backpacks, briefcases
e. Highlighters, pens, erasers, mechanical pencils, dictionaries, and translators
f. Food, candy, gum, water or other beverages
g. Outerwear, such as coats, jackets, gloves
3. Examinees may request a dry erase board to be used during the test. The dry erase board must be returned to the test administrator before leaving the Prometric Test Center.
4. Examinees are not permitted to engage in conversation while on a break. Use of a telephone on an unscheduled break is prohibited.
5. Test center administrators will report the activity of examinees who take unscheduled breaks. Examinees may not study or refer to notes or texts while on an unscheduled break. Examinees may not access personal belongings or prohibited items (listed in #2 above) during unscheduled breaks and may not leave the test center.
6. Although the test is administered under strict supervision and security, test irregularities may sometimes occur. On rare occasions, test scores may be voided based upon a breach of test security, invalid test conditions, or violation of Test Regulations or Test Center Rules of Conduct. Examinees are responsible for protecting the integrity of their answers. If cheating is detected during the test, or evidence of irregular behavior is disclosed when the tests are scored, or later, those involved, will have their test scores voided.