sealants are just a few of the many chemical agents that
could become hazards.
The use of photo-initiated dental materials has
increased dramatically. Many restorative resins,
bases/liners, impression materials, and periodontal
dressings are now visible light polymerized materials.
Repeated exposure to the curing light from the visible
light polymerization unit can cause damage to the
retina. You should use protective filtering lenses,
goggles, or shields when using visible light poly-
merization procedures. It is also recommended that
you do not stare at the light source or reflected light
during the polymerization period.
Injury by Projectiles
Patients and staff members can be injured by
projectiles or debris generated by cutting, scaling,
polishing, or irrigating procedures. Aspiration of
projectiles by the patient is also a possible hazard.
Actions that prevent projectile injuries include using
rubber dams and wearing protective eyeglasses or
In the DTF, several devices have the potential to
produce noise levels that may cause a hearing loss in
exposed personnel. The potential for hearing loss is
directly related to the intensity of the noise, the
duration of the exposure, and the sensitivity of the
individual. The proper use and maintenance of
equipment and the proper use of hearing protection,
when appropriate, are all important to prevent
unnecessary exposure to hazardous noise and the
potential for occupational hearing loss.
Some aspects of the dental environment have
psychological affects on staff and patients. Every
effort should be made to maximize the positive
psychological affects by optimal use of such interior
design features as lighting, wall color, texture, and
decoration, furnishings, and floor coverings.
Its important for you to understand that as a dental
assistant, you are not expected to assume the role of a
Dental Equipment Technician (DET). The DET has a
Navy Enlisted Classification Code of DT-8732 and is
trained to maintain and repair mechanical, electro-
mechanical, and electronic dental equipment; and
perform preventive maintenance and electrical safety
testing on dental equipment.
To be an effective dental assistant, you must be
familiar with the equipment in the DTR. You are
Recognize the major components of each piece
Operate each piece of equipment.
Perform routine user maintenance on
The first rule for operating and performing user
maintenance on equipment is to carefully read the
manufacturers instructions. Copies of this literature
should be in the LPO/LCPOs office, or contact the
Dental Equipment Repair Division.
TERMINOLOGY AND DEFINITIONS
Biomedical and Facilities Systems
(BIOFACS)A centrally-managed automated
preventive maintenance system for use by
Dental EquipmentConsists of devices used in
the dental diagnosis, therapy, and treatment of
injury or disease.
This equipment consists
primarily of Federal Supply Classification
(FSC) 6500 items. It also consists of similar
commercial, nonstandard items used in dental
treatment facilities to provide patient care.
Types of Maintenance Requirements (MRs)
The three types of MRs are as follows:
Preventive maintenance (PM)Often
called scheduled maintenance, serves to ensure
inherent reliability, increase operational
availability, and prevent excessive wear of
Unscheduled maintenance (UM)Often
referred to as corrective maintenance for the
repair of equipment breakage or malfunctions.
No maintenance required (NMR)Applies
to equipment that normally requires no
Maintenance LevelsThe three maintenance
levels are as follows:
Level I (performance testing)
Organizational maintenance consists of