Purpose
Familiarize staff with basic dental anatomy to enable effective communication with patients and the clinical team. This is the first module of the Dental 101 series.
Reading time: 10–15 min
Audience: New staff, front desk, billing, insurance verification
Audience: New staff, front desk, billing, insurance verification
Tooth tissues
| English | Spanish | Function |
|---|---|---|
| Crown | Corona | Visible part of the tooth, covered in enamel |
| Root | Raíz | Internal part inside the bone that anchors the tooth |
| Enamel | Esmalte | Hardest outer layer of the human body |
| Dentin | Dentina | Main tissue of the tooth, beneath the enamel |
| Pulp | Pulpa | Soft inner tissue with nerves and blood vessels |
| Gum / Gingiva | Encía | Soft tissue surrounding the tooth |
| Cementum | Cemento | Layer covering the tooth root |
| Blood Vessels | Vasos sanguíneos | Carry nutrients to the pulp |
| Periodontal Ligament | Ligamento Periodontal | Connects the tooth to alveolar bone |
| Lateral canals | Canales laterales | Secondary ducts from the root |
| Nerve | Nervio | Sensitivity and pain |
Tooth types
Incisors
Front teeth. Function: cutting food.
Canines
The "fangs". Function: tearing food.
Premolars
Between canines and molars. Function: crushing and grinding food.
Molars
Furthest back. Function: grinding food; larger and flatter.
Other tissues and structures
| Structure | Description |
|---|---|
| Upper jaw (maxilla) | Upper bone supporting the upper teeth |
| Lower jaw (mandible) | Lower bone, the only movable bone in the skull |
| Soft tissue | Gingiva, mucous membranes, periodontal ligament |
| TMJ | Temporomandibular Joint — the "hinge" connecting jaw to skull |
| Tongue | Critical muscle for speech, swallowing and digestion |
Universal Numbering System (USA)
The system used in the United States to identify teeth in dental records and insurance claims:
Permanent teeth: numbered 1 through 32
Primary (baby) teeth: letters A through T
Direction: right to left from patient's perspective (viewed from outside)
Primary (baby) teeth: letters A through T
Direction: right to left from patient's perspective (viewed from outside)
Tooth surfaces
Critical terminology for dental coding and communication with the dentist:
| Surface | Definition | Clinical application |
|---|---|---|
| Mesial | Toward the midline of the face | Cavities between adjacent teeth |
| Distal | Away from the midline | Cavities on the back face |
| Buccal / Facial | Outer surface toward cheek or lips | Cosmetic and visible restorations |
| Lingual / Palatal | Inner surface toward tongue or palate | Hard to reach for cleaning |
| Occlusal | Top surface of molars and premolars | Where you chew; common for sealants |
| Incisal | Edge of front teeth | Cosmetic, fractures |
Why this matters for non-clinical staff
- When a patient says "my back lower left tooth hurts", you can translate to clinical staff as "lower left molar"
- When verifying coverage, CDT codes (D####) are organized by procedure type on these structures
- When calling an insurance carrier, you speak the same vocabulary as they do
Next module
TRN-CL2-002 — Basic Dental Procedures
Cleaning, restoration, endodontics, orthodontics, surgery, prosthodontics, cosmetics.