Category: L
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Lamella
A thin layer, membrane, plate, or scale, as of bone, tissue, or cell walls. Gill that reaches the stem. Lamellae, any plate-like part, as a bone. A thin layer, membrane, scale, or plate-like tissue or part. In bone tissue, lamellae are thin bands of calcified matrix arranged concentrically around a Haversian canal. A small disc…
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Lacuna
A depression; a hollow space. The space in which cells are located. A small hollow or cavity. Lacunae, small hollow or cavity in or between body parts, especially a cartilage-filled depression in bone. A small cavity or depression; for example, one of the spaces in compact bone in which a bone cell lies.
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Lactobacillus spp
Gram‐positive bacteria that contribute to caries progression. The bacteria are rod‐shaped and motile, and can exist under anaerobic conditions.
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lacerate
To mangle; to tear; to cut so that the margin is irregular. Irregularly lobed at the margin, as if torn. To tear or cut roughly.
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Laboratory screw
Threaded component matching the abutment screw, used by the laboratory technician in the fabrication of the prosthetic reconstruction. Its use avoids damage to the prosthetic screw which is reserved for the intraoral fixation of the prosthesis.
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Laboratory analog
Copy of a prosthetic or implant element used in laboratory fabrication procedures.
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Labioversion
Any deviation from the normal arrangement of the dental arch toward the lip. The state of being twisted in a labial direction, especially a tooth.
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Labial vestibule
The segment of the oral cavity that is anterior to the bicuspids and lies between the lips and the adjacent teeth or the corresponding edentulous residual ridge.
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Labial flange
The ridge, edge, or projection of a denture that is positioned toward the vestibule located on the lip side of the mouth.
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Labial
Of or relating to the lip; toward the lip. Referring to the lips or to labia. Related to the lips, a labium, or sounds produced with the lips.