periodontal ligament


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Related to periodontal ligament: periodontal ligament fibers

ligament

 [lig´ah-ment]
1. a band of fibrous tissue connecting bones or cartilages, serving to support and strengthen joints. See also sprain.
2. a double layer of peritoneum extending from one visceral organ to another.
3. cordlike remnants of fetal tubular structures that are nonfunctional after birth. adj., adj ligament´ous.
accessory ligament one that strengthens or supports another.
arcuate l's the arched ligaments that connect the diaphragm with the lowest ribs and the first lumbar vertebra.
broad ligament of uterus a broad fold of peritoneum supporting the uterus, extending from the side of the uterus to the wall of the pelvis.
capsular ligament the fibrous layer of a joint capsule.
conoid ligament the posteromedial portion of the coracoclavicular ligament, extending from the coracoid process to the inferior surface of the clavicle.
coracoclavicular ligament a band joining the coracoid process of the scapula and the acromial extremity of the clavicle, consisting of two ligaments, the conoid and trapezoid.
costotransverse ligament three ligaments (lateral, middle, and superior) that connect the neck of a rib to the transverse process of a vertebra.
cruciate l's of knee more or less cross-shaped ligaments, one anterior and one posterior, which arise from the femur and pass through the intercondylar space to attach to the tibia.
Cruciate ligaments of the knee. From Jarvis, 2000.
crural ligament inguinal ligament.
deltoid ligament of ankle medial ligament.
falciform ligament of liver a sickle-shaped sagittal fold of peritoneum that helps to attach the liver to the diaphragm and separates the right and left lobes of the liver. Called also broad ligament of liver.
gastrosplenic ligament a peritoneal fold extending from the greater curvature of the stomach to the hilum of the spleen.
Gimbernat's ligament a membrane with its base just lateral to the femoral ring, one side attached to the inguinal ligament and the other to the pectineal line of the pubis. Called also lacunar ligament.
glenohumeral l's bands, usually three, on the inner surface of the articular capsule of the humerus, extending from the glenoid lip to the anatomical neck of the humerus.
Henle's ligament a lateral expansion of the lateral edge of the rectus abdominis muscle which attaches to the pubic bone.
inguinal ligament a fibrous band running from the anterior superior spine of the ilium to the spine of the pubis; called also Poupart's ligament.
intracapsulary l's ligaments of the joint capsule that are inside the capsule.
lacunar ligament Gimbernat's ligament.
Lisfranc's ligament a fibrous band extending from the medial cuneiform bone to the second metatarsal.
Lockwood's ligament a suspensory sheath supporting the eyeball.
medial ligament a large fan-shaped ligament on the medial side of the ankle.
meniscofemoral l's two small fibrous bands of the knee joint attached to the lateral meniscus, one (the anterior) extending to the anterior cruciate ligament and the other (the posterior) to the medial femoral condyle.
nephrocolic ligament fasciculi from the fatty capsule of the kidney passing down on the right side to the posterior wall of the ascending colon and on the left side to the posterior wall of the descending colon.
nuchal ligament a broad, fibrous, roughly triangular sagittal septum in the back of the neck, separating the right and left sides.
patellar ligament the continuation of the central portion of the tendon of the quadriceps femoris muscle distal to the patella, extending from the patella to the tuberosity of the tibia; called also patellar tendon.
pectineal ligament a strong aponeurotic lateral continuation of the lacunar ligament along the pectineal line of the pubis.
periodontal ligament the connective tissue structure that surrounds the roots of the teeth and holds them in place in the dental alveoli.
Petit's ligament uterosacral ligament.
phrenicocolic ligament costocolic fold.
Poupart's ligament inguinal ligament.
pulmonary ligament a vertical fold extending from the hilus to the base of the lung.
rhomboid ligament the ligament connecting the cartilage of the first rib to the undersurface of the clavicle.
round ligament of femur a broad ligament arising from the fatty cushion of the acetabulum and inserted on the head of the femur.
round ligament of liver a fibrous cord from the navel to the anterior border of the liver.
round ligament of uterus a fibromuscular band attached to the uterus near the fallopian tube, passing through the abdominal ring, and into the labium majus.
splenorenal ligament a peritoneal fold that passes from the diaphragm to the concave surface of the spleen.
suspensory ligament of axilla a layer ascending from the axillary fascia and ensheathing the smaller pectoral muscle.
suspensory ligament of lens ciliary zonule.
sutural ligament a band of fibrous tissue between the opposed bones of a suture or immovable joint.
tendinotrochanteric ligament a portion of the capsule of the hip joint.
transverse humeral ligament a band of fibers bridging the intertubercular groove of the humerus and holding the tendon in the groove.
trapezoid ligament the anterolateral portion of the coracoclavicular ligament, extending from the upper surface of the coracoid process to the trapezoid line of the clavicle.
umbilical ligament, medial a fibrous cord, the remains of the obliterated umbilical artery, running cranialward beside the bladder to the umbilicus.
uteropelvic l's expansions of muscular tissue in the broad ligament of the uterus, radiating from the fascia over the internal obturator muscle to the side of the uterus and the vagina.
uterosacral ligament a part of the thickening of the visceral pelvic fascia beside the cervix and vagina; called also Petit's ligament.
ventricular ligament vestibular ligament.
vesicouterine ligament a ligament that extends from the anterior aspect of the uterus to the bladder.
vestibular ligament the membrane extending from the thyroid cartilage in front to the anterolateral surface of the arytenoid cartilage behind; called also ventricular ligament.
vocal ligament the elastic tissue membrane extending from the thyroid cartilage in front to the vocal process of the arytenoid cartilage behind.
Weitbrecht's ligament a small ligamentous band extending from the ulnar tuberosity to the radius.

per·i·o·don·tal lig·a·ment

the investing and supporting connective tissue structure by which a tooth is anchored within its alveolus. It consists of bands of collagen fibers connecting the cement of the tooth to both gingival and alveolar bone and to the cement of adjacent teeth. Interspersed among the collagen fibers are loose connective tissue, blood vessels, lymphatic vessels, and nerves.
Synonym(s): peridental ligament

periodontal ligament (PDL)

the fibrous connective tissue that surrounds a tooth and attaches the tooth to the alveolus. It is composed of many bundles of collagenous tissue arranged in groups, which lie at differing angles relative to the root of the tooth, the alveolus, and the gingiva due to the forces of mastication, between which lies loose connective tissue interwoven with blood vessels, lymphatic vessels, and nerves. Also called periodontium.

per·i·o·don·tal lig·a·ment

(perē-ō-dontăl ligă-mĕnt)
The connective tissue that surrounds the tooth root and attaches it to its bony socket; it consists of fibers anchored in the cementum and extending into the alveolar bone, as well as the tissues that surround and support the teeth, including the gingivae, cementum, periodontal ligament, and alveolar and supporting bone.
Synonym(s): alveolodental ligament, alveolodental membrane, peridental membrane, periodontal membrane, periodontium (2) .

per·i·o·don·tal lig·a·ment

(PDL) (perē-ō-dontăl ligă-mĕnt)
Investing and supporting connective tissue structure by which a tooth and tooth root are anchored within its alveolus; consists of bands of collagen fibers connecting tooth cementum to both gingival and alveolar bone and to cementum of adjacent teeth.

periodontal

around a tooth; pertaining to the periodontium.

periodontal abscess
a localized, acute infection that may drain into the gingival pocket or directly through the gum. There is often local bone destruction. See also malar abscess.
periodontal charting
recording the periodontal indices in dental records.
periodontal disease
any disease or disorder of the periodontium. See also periodontitis and periodontosis.
periodontal fibrous hyperplasia
see periodontal fibromatous epulis.
periodontal indices
indicators of periodontal health; includes amount of plaque and calculus, changes in the gingiva, probing depth, evaluation of attachment, and grade of mobility.
periodontal ligament
the connective tissue that occupies the space between each tooth and its socket and that suspends the tooth.
periodontal pocket
a deep space between the gingiva and the crown or root of a tooth. It can be the result of hyperplasia of the gingiva (false pocket) or migration of the epithelial attachment toward the apex (true pocket).
periodontal probe
a dental instrument used to measure the depth of the periodontal pocket.
periodontal pseudopocket
gingival hyperplasia or swelling may be responsible for increased sulcus depth but the periodontal membrane and alveolar bone are normal.
References in periodicals archive ?
As the infectious and inflammatory process continues, the teeth may become loosened, and destruction of the periodontal ligament and supporting alveolar bone occurs.
In vitro, TGF-[beta] has been observed to promote extracellular matrix production in many cell types, such as periodontal ligament fibroblasts.
The major treatment concern of the affected molars is that these teeth cannot be moved orthodontically due to an abnormal periodontal ligament.
This approach is based on the importance of not causing further disruption to the periodontal ligament and dental neurovascular bundle [Jacobsen, 1983; Saroglu, 2006].
The periodontal ligament injection is a highly effective method for anesthetizing a single tooth, which avoids collateral anesthesia to the tongue, lip and cheek.
The regenerative potential of the periodontal ligament.
Milestone's STA Delivery System is designed to allow dentists to immediately administer the periodontal ligament injection, to anesthetize a single tooth, without first administering a mandibular block that anesthetizes an entire quadrant of the jaw.
2006] found normal structure of the gingiva, periodontal ligament, alveolar process, and cementum layer.
The clinical signs of periodontitis emanate from inflammatory and destructive changes in the gingiva, connective tissues, alveolar bone, periodontal ligament, and root cementum.
However, for some individuals the inflammatory process continues and expands, the collagen of the periodontal ligament breaks down and bone resorption occurs, resulting in periodontitis.
Milestone Scientific's STA device is designed to significantly improve the efficiency of a procedure that is highly valued among dentists -- the periodontal ligament injection.
The periodontal ligament (PDL) injection, which anesthetizes only the tooth that requires repair, is generally thought to be the most valuable injection for the dentist, the patient and the business of dentistry.