Tooth Morphology Key Features

Vocabulary practice flashcards based on tooth morphology key features, eruption dates, and anatomical terminology.

Primary teeth formation start

$$14$$

Primary teeth completion age

$$3$$

Appearance of first deciduous teeth

$$6$$

Eruption of last deciduous teeth

$$28$$

Eruption of first permanent teeth

$$6$$

Mixed dentition (Transition period)

$$6$$

Teeth present at $8.5$

$$12$$

Mixed dentition trigger

Emergence of the $1^{st}$

Permanent dentition completion

$$14$$

Tooth numbering systems

Palmer or Zsigmondy, Universal numbering system, and FDI system

FDI

Federation Dentaire Internationale, a two-digit system

Cusp

An elevation or mound on the crown portion of a tooth making up a divisional part of the occlusal surface

Ridge

Any linear elevation on the surface of the tooth

Transverse ridge

Union of two transverse ridges on the same side; formed where buccal and lingual triangular ridge join

Sulcus

Long depression or valley in the surface of the tooth between ridges and cusps

Developmental groove

A shallow groove or depression between the primary parts of the crown or root

Pit

A small pinpoint located at the junction of the developmental groove

Mamelon

The three rounded protuberances found on the incisal ridges of the newly erupted incisor teeth

Line angle

Formed by the junction of two surfaces

Point angle

Formed by the junction of three surfaces

Tooth with longest root

Maxillary Canine

Tooth with longest crown

Mandibular canine

Smallest tooth in the arch

Mandibular central incisor

Widest Anterior teeth

Maxillary central incisor

Succedaneous teeth

The teeth which replace their primary predecessors

General eruption sequence

Mandibular teeth typically erupt before maxillary teeth

Permanent $1^{st}$

$$6$$

Deciduous mandibular $1^{st}$

A tooth that does not resemble any of the permanent molars