Premolar (Bicuspid)
Definition
Two-cusped tooth for grinding and tearing. Two per quadrant in permanent dentition only; absent in deciduous.
- Function
- Grinding and tearing
- Cusps
- Two
- Count per quadrant
- Two, in permanent dentition
- Deciduous dentition
- Absent
Common questions
Why does the absence of premolars in deciduous dentition matter forensically?+
Because premolars only appear with the permanent dentition, their presence or absence, along with eruption stage, is a direct indicator used in dental age estimation to distinguish a juvenile from an adult or to narrow an age range for unidentified remains.
How are premolars used in bite mark analysis?+
Premolar cusp shape and wear pattern contribute to the overall arch and occlusal pattern recorded in a bite mark, though their two-cusp form is less individually distinctive than incisors or canines, so premolars are usually assessed as part of the full dental arch rather than in isolation.
Related terms
- ABFO No. 2 Scale
- The right-angle L-shaped reference scale with circular targets used in bite mark photography. Its design enables post-capture correction of lens distortion and...
- Cameriere Method (2007)
- Adult age estimation using the pulp-to-tooth area ratio measured on periapical radiographs of canines.
- Canine
- Single-cusped tooth for tearing and gripping. One per quadrant. Often the last anterior tooth to be lost in old age.
- Cheiloscopy
- Study of lip prints (Greek cheilos, lip; skopein, to examine). The furrow system on human lips was first described by anthropologist R....
- Deciduous Dentition
- The first set of 20 teeth, also called primary or milk teeth, that erupt from approximately six months and are progressively replaced...
- Demirjian Method (1973)
- Childhood age estimation using radiographic stage-scoring (A to H, eight stages) of the seven permanent left mandibular teeth.
- Dental Formula
- Per-quadrant notation of tooth types in the order Incisors.Canines.Premolars.Molars. Human deciduous 2.1.0.2, permanent 2.1.2.3.
- Gustafson Method (1950)
- Adult age estimation using six histological and morphological criteria (Attrition, Periodontosis, Secondary dentine, Cementum apposition, Root resorption, Transparency of root), each scored...
- Incisor
- Chisel-shaped anterior tooth for cutting. Two per quadrant (central and lateral) in both dentitions.
- Molar
- Multi-cusped posterior tooth for grinding. Two per quadrant deciduous, three per quadrant permanent (third molar is the wisdom tooth).
- Nolla Method (1960)
- Ten-stage radiographic scoring of tooth calcification used for paediatric age estimation.
- Permanent Dentition
- Second set of 32 teeth. First permanent molar erupts at 6 years, third molar (wisdom) at 17 to 25 years. Dental formula...