extraction

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extraction

 [ek-strak´shun]
1. the process or act of pulling or drawing out.
2. the preparation of an extract.
breech extraction extraction of an infant from the uterus in cases of breech presentation.
flap extraction removal of a cataract by making a flap in the cornea.
menstrual extraction a form of induced abortion in which a flexible cannula is inserted through an undilated cervix for the purpose of removing the fertilized embryo and endometrium. The cannula is attached to a syringe, which is used to aspirate the uterine contents and induce the onset of the “missed period.” This technique is not always effective, and sometimes a second procedure is required. It should be done within two weeks of a missed menstrual period.
serial extraction the selective extraction of primary teeth during an extended period of time to allow autonomous adjustment.
tooth extraction forcible removal of a tooth; called also odontectomy.
vacuum extraction removal of the uterine contents by application of a vacuum, done either for delivery of a viable fetus or for an abortion.

ex·trac·tion

(eks-trak'shŭn),
1. Luxation and removal of a tooth from its alveolus.
2. Partitioning of material (solute) into a solvent.
3. The active portion of a drug; the making of an extract.
4. Surgical removal by pulling out.
5. Removal of the fetus from the uterus or vagina at or near the end of pregnancy, either manually or with instruments.
6. Removal of the product of conception by sucton before a menstrual period has been missed.
[L. extraho, pp. -tractus, to draw out]

extraction

/ex·trac·tion/ (eks-trak´shun)
1. the process or act of pulling or drawing out.
2. the preparation of an extract.

breech extraction  extraction of an infant from the uterus in breech presentation.
flap extraction  extraction of a cataract by an incision which makes a flap of cornea.
serial extraction  the selective extraction of deciduous teeth during an extended period of time to allow autonomous adjustment.
testicular sperm extraction  (TESE) for men with obstructive azoospermia, extraction of spermatozoa directly from the testis through the skin.

extraction

Dentistry See Dental extraction Gynecology See Menstrual extraction.

ex·trac·tion

(eks-trakshŭn)
1. Luxation and removal of a tooth from its alveolus.
2. Partitioning of material (solute) into a solvent.
3. The removal of the active portion of a drug; the making of an extract.
4. Surgical removal by pulling out.
5. Removal of the fetus from the uterus or vagina at or near the end of pregnancy, either manually or with instruments.
6. Removal by suction of the products of conception before a menstrual period has been missed.
[L. ex-traho, pp. -tractus, to draw out]

Extraction

The surgical removal of a tooth from its socket in the bone.

extraction (ek·strakˑ·shn),

n method used to isolate essential oils and other products, such as absolutes, floral waters, resinoids, and tinctures, from plant material. Distillation, hydrodiffusion, expression, solvent extraction, carbon dioxide extraction, enfleurage, and maceration are commonly used extraction methods. See also distillation, hydrodiffusion, expression, enfleurage, and maceration.

ex·trac·tion

(eks-trakshŭn)
1. Luxation and removal of a tooth from its alveolus.
2. Surgical removal by pulling out.
[L. ex-traho, pp. -tractus, to draw out]

extraction,

n the removal of a tooth from the oral cavity by means of elevators and/or forceps.
extraction, serial,
n the extraction of selected primary teeth over a period of years (often ending with removal of the first premolar teeth) to relieve crowding of the dental arches during eruption of the lateral incisors, canines, and premolars.

extraction

1. the process or act of pulling or drawing out.
2. the preparation of an extract.

breech extraction
extraction of a fetus from the uterus in cases of breech presentation.
flap extraction
removal of a cataract by making a flap in the cornea.
extraction forceps
concave beaks to grasp teeth.
vacuum extraction
removal of the contents of a body cavity by application of a vacuum.