periodontium


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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·ti·um

, pl.

per·i·o·don·ti·a

(per'ē-ō-don'shē-ŭm, -shē-ă), [TA]
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; the tissues that surround and support the teeth, including the gingivae, cementum, desmodentium, periodontal fibrs, and alveolar and supporting bone.
[L. fr. peri- + G. odous, tooth]

per·i·o·don·ti·um

, pl. periodontia (perē-ō-donshē-ŭm, -ă) [TA]
1. All of the tissues that invest and support the teeth.
2. Synonym(s): periodontal ligament.
[L. fr. peri- + G. odous, tooth]

periodontium

The layer of fibrous, supportive connective tissue between the root of the tooth and the tooth socket. For practical convenience, dentists extend this definition to include the CEMENTUM, the gum surrounding the neck of the tooth and the bone of the socket (alveolar bone).

per·i·o·don·ti·um

, peridentium,pl. periodontia, peridentia (perē-ō-donshē-ŭm, -denshē-ŭm, -donshē-ă, -denshē-ă) [TA]
Connective tissue that surrounds tooth root and attaches it to its bony socket; consists of fibers anchored in cementum and extending into alveolar bone; tissues that surround and support teeth, including gingivae, cementum, desmodentium, periodontal fibers, and alveolar and supporting bone.
Synonym(s): alveolar periosteum, alveolodental membrane, gingivodental ligament, paradentium, peridental membrane.
[L. fr. peri- + G. odous, tooth]
References in periodicals archive ?
In conclusion, within the inherent limitations of this animal study, we found that colchicine exerted an anti-inflammatory effect on periodontitis progression in ligature-induced periodontitis without affecting healthy periodontium. However, further studies are warranted to investigate the long-term efficacy and mode of action of colchicine on alveolar bone loss and inflammation in periodontitis because of its extensive use in several inflammatory diseases.
Low frequency noise effects on the periodontium of the Wistar rat - a light microscopy study 2007; 11(1): 27-30
Moreover, it is very important to educate diabetic patients about the importance of lifestyle changes and meticulous home care that can minimize destruction of the periodontium. In the present study, it was extremely difficult to identify a clear relationship between the effect of the drug of interest (simvastatin) and the level of inflammation as it is a cross-sectional study.
The presence of healthy periodontium was found in 11.1% of young adults and meant 5.0% of the total of individuals examined.
These alterations include a cascade of events--in the mineralized (alveolar bone) and nonmineralized (periodontium) tissues--that allow the tooth movement.
MMP-8 levels in GCF in patients with healthy periodontium andin patientswith varying severity of periodontitis are shown in Figure 1.
In periodontium, these neutrophils are the protective cells and any defects associated with them lead to increased susceptibility to periodontitis.
To explore the joulemetric values of intact periodontium, student volunteers ofthe Penza State University were examined.
Mariotti (1999) characterized gingival diseases with presence of 1) signs and symptoms that are confined to gingiva 2) presence of dental plaque to initiate and exacerbate severity of lesions 3) clinical signs of inflammation (enlarged gingival contours due to edema or fibrosis, colour transition to a red and bluish-red hue, elevated sulcular temperature, bleeding upon stimulation, increased gingival exudates 4) clinical signs and symptoms associated with stable attachment levels on a periodontium with no loss of attachment or on a stable but reduced periodontium 5) reversibility of disease by removing the etiology 6) possible role as a precursor to attachment loss, around teeth.
Table 1 shows that the magnitudes of the load calculated under assumption of the plane strain state for the displacement of the tooth root in the shape of the circular paraboloid or hyperboloid are slightly different from the load, calculated under the assumption of the periodontium incompressibility.
Objective: The PRE-Facto fellowship aims to develop a new regenerative approach which potentially will promote the revival of the periodontium, while a successful outcome may lead also to the prevention of the disease when intervened early.