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GLOSSARY OP TECHNICAL TEEMS AND PHRASES. 295
_ Inverted pen geasp. In this the fingers are so bent as to invert the ordinary
position of the instrument. Used in some special positions. See Figure 55, Vol. 2.
Inward inclination. In comparative dental anatomy, a tooth that is inclined
lingually. In dentistry, lingual inclination should be used.
Labial. Pertaining to the lips. Toward the lips.
Labial cavities. Cavities beginning in the labial surfaces of the incisors and
cuspids.
Labial inclination. An inclination or leaning of a tooth labially.
Labiallt. A direction toward the lips.
Labial surface. The surface of a tooth next to the lips. The incisors and
cuspids have labial surfaces.
Labio-lingual. Prom the lips toward the tongue; as the labio-lingual diameter
of the central incisor.
Labio-lingually. A direction from the lips toward the tongue.
Lancet. An instrument with small blade for incising soft tissues.
Lateral alveolar abscess. An abscess located in the peridental membrane
anywhere along the sides of the root of a tooth and not involving the apical space.
The pulp of the tooth may be alive. Lateral alveolar abscesses occur most frequently
in phagedenic pericementitis but may occur from accidental causes, such as thrusting
a spicula of wood from a toothpick into the peridental membrane, etc.
Ligature. Anything that binds. A cord or thread for tying blood vessels, or
for tying around the teeth.
Ligatures. Threads of floss or twisted silk used as aids in adjusting the rubber
dam, tying it in place, tying on matrices, etc.
Line angles. Of the teeth : Those angles formed by the junction of two sur-
faces along a line ; as the mesio-buceal angle, disto-buccal angle, etc. Of cavities
Those angles formed by the junction of two cavity walls along a line; as disto-
buccal angle or axio-gingival angle. See Sets of Line Angles.
Lines op accretion. The lines of accretion or of contemporaneous growth
seen in the enamel of the teeth. They are also known as the lines of Retzius, the
person who first described them. See Accretion.
Lingual. Next to, or toward the tongue; as lingual surface.
Lingual cavities. Cavities beginning in the lingual surfaces of the teeth.
Lingual inclination. Said of teeth when they are inclined toward the tongue,
or of a cavity wall that inclines toward the tongue; anything inclined toward the
tongue.
Lingually. A direction toward the tongue.
Lingual surface. A surface of a tooth next to the tongue. All of the teeth
have lingual surfaces. In comparative dental anatomy these are called inner surfaces.
Linguo-distal inclination. An inclination of the teeth to the lingual and
distal often seen in the lower bicuspids when a lower first molar has been lost in
childhood or youth. Anything inclined linguo-distally.
Linguo-gingival fissure. A fissure occurring occasionally in the lingual sur-
face of the upper incisors. It usually separates the lingual lobe from one of the
marginal ridges and extends into the cementum.
Linguo-gingival ridge. A ridge near the gum on the lingual surface of the
t
incisors and cuspids. It is on the lingual lobe.
Lobe. A division of a tooth formed from any one of the separate points of
the beginning of calcification.
Malocclusion. An occlusion of the teeth that is not in accordance with the
usual anatomical rule, or form.
GLOSSARY OP TECHNICAL TEEMS AND PHRASES. 295
_ Inverted pen geasp. In this the fingers are so bent as to invert the ordinary
position of the instrument. Used in some special positions. See Figure 55, Vol. 2.
Inward inclination. In comparative dental anatomy, a tooth that is inclined
lingually. In dentistry, lingual inclination should be used.
Labial. Pertaining to the lips. Toward the lips.
Labial cavities. Cavities beginning in the labial surfaces of the incisors and
cuspids.
Labial inclination. An inclination or leaning of a tooth labially.
Labiallt. A direction toward the lips.
Labial surface. The surface of a tooth next to the lips. The incisors and
cuspids have labial surfaces.
Labio-lingual. Prom the lips toward the tongue; as the labio-lingual diameter
of the central incisor.
Labio-lingually. A direction from the lips toward the tongue.
Lancet. An instrument with small blade for incising soft tissues.
Lateral alveolar abscess. An abscess located in the peridental membrane
anywhere along the sides of the root of a tooth and not involving the apical space.
The pulp of the tooth may be alive. Lateral alveolar abscesses occur most frequently
in phagedenic pericementitis but may occur from accidental causes, such as thrusting
a spicula of wood from a toothpick into the peridental membrane, etc.
Ligature. Anything that binds. A cord or thread for tying blood vessels, or
for tying around the teeth.
Ligatures. Threads of floss or twisted silk used as aids in adjusting the rubber
dam, tying it in place, tying on matrices, etc.
Line angles. Of the teeth : Those angles formed by the junction of two sur-
faces along a line ; as the mesio-buceal angle, disto-buccal angle, etc. Of cavities
Those angles formed by the junction of two cavity walls along a line; as disto-
buccal angle or axio-gingival angle. See Sets of Line Angles.
Lines op accretion. The lines of accretion or of contemporaneous growth
seen in the enamel of the teeth. They are also known as the lines of Retzius, the
person who first described them. See Accretion.
Lingual. Next to, or toward the tongue; as lingual surface.
Lingual cavities. Cavities beginning in the lingual surfaces of the teeth.
Lingual inclination. Said of teeth when they are inclined toward the tongue,
or of a cavity wall that inclines toward the tongue; anything inclined toward the
tongue.
Lingually. A direction toward the tongue.
Lingual surface. A surface of a tooth next to the tongue. All of the teeth
have lingual surfaces. In comparative dental anatomy these are called inner surfaces.
Linguo-distal inclination. An inclination of the teeth to the lingual and
distal often seen in the lower bicuspids when a lower first molar has been lost in
childhood or youth. Anything inclined linguo-distally.
Linguo-gingival fissure. A fissure occurring occasionally in the lingual sur-
face of the upper incisors. It usually separates the lingual lobe from one of the
marginal ridges and extends into the cementum.
Linguo-gingival ridge. A ridge near the gum on the lingual surface of the
t
incisors and cuspids. It is on the lingual lobe.
Lobe. A division of a tooth formed from any one of the separate points of
the beginning of calcification.
Malocclusion. An occlusion of the teeth that is not in accordance with the
usual anatomical rule, or form.
