Tuberculum dentale, expressed as ridges and/ or tubercles on UI1 and UI2 (intratrait, intrafield interaction) and UC (intratrait, interfield interaction).
A diagram of a permanent posterior tooth's occlusal surface highlights anatomical features such as the cusp tip, cusp ridge, inclined cuspal plane, and marginal ridges.
The Uto-Aztecan premolar is a rare variant of UP1 found primarily in Native Americans; note the strong buccalward rotation of the buccal cusp and large pit separating the buccal and lingual cusps. The large tubercle between the lingual cusp and pit (black arrow) is unusually large for this trait.
A common sight in archaeological contexts - well preserved teeth mixed in with highly fragmented bone. The hydroxyapatite of enamel is primarily inorganic, so teeth usually preserve better than bone in the archaeological and paleontological record.
Diagram of a tooth illustrating various anatomical features from different views: labial, lingual, incisal, mesial, and distal. Labels include imbrication lines, marginal ridges, cingulum, mamelons, incisal angles, and height of contour.
Three maxillary molars displayed side-by-side labeled A, B, and C as 1st Molar, 2nd Molar, and 3rd Molar respectively. Each tooth is shown from the buccal view, depicting variations in cusp arrangement and root morphology across the types.
Multiple views of a permanent maxillary right first molar including buccal, lingual, mesial, distal, and occlusal. A diagram of a dental arch is shown at the center top, highlighting the position of the molar with a blue dot.
nterruption grooves on UI1 and UI2 (black arrows); the groove crosses both the crown and root on the right UI2, hence the alternative name of coronoradicular groove.
Side-by-side images of a mandibular first premolar from mesial and lingual views. Each image features a red circle highlighting the unique cusp shape visible from these perspectives.
Occlusal view of a maxillary first molar with four distinct cusps, each circled in different colors: mesial cusps in blue and red, distal cusps in green and purple, labeled 'M' for mesial and 'D' for distal.