probe

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probe

 [prōb]
1. a long, slender instrument for exploring wounds, body cavities, passages, or periodontal pockets.
Dental probes are marked in millimeters to measure the depth of periodontal pockets. From Novak, 2001.
2. a radioactive or chemiluminescent DNA or RNA fragment used to detect the presence of a complementary fragment. The labeled sequence is added to a specimen, where it forms a complex with the DNA in the sample, which has previously been treated to separate the DNA into single strands. DNA probes are used clinically to detect and identify infectious disease agents.
root canal probe in root canal therapy, an instrument for tracing the course of the root canal. Called also pathfinder, pathfinder broach, and smooth broach.

probe

(prōb),
1. A slender rod of rigid or flexible material, with a blunt bulbous tip, used for exploring sinuses, fistulae, other cavities, or wounds.
2. A device or agent used to detect or explore a substance (for example, a molecule used to detect the presence of a specific fragment of DNA or RNA or of a specific bacterial colony).
3. To enter and explore, as with a probe.
[L. probo, to test]

(Sense 2) Probes are essential tools for DNA analysis. Every DNA molecule possesses some unique nucleotide sequences that differentiate it from all others. A probe is a relatively short fabricated fragment of DNA that matches, in lock-and-key fashion, a nucleotide sequence unique to the material that is being sought. Probes are used to test for the presence of cloned genes in bacterial or yeast colonies, for specific nucleotide sequences in samples of DNA, or for specific genes on chromosomes.

probe

(prōb)
1. a long, slender instrument for exploring wounds or body cavities or passages.
2. a radioactive or chemiluminescent DNA or RNA sequence used to detect the presence of a complementary sequence. DNA probes are used clinically to detect and identify infectious disease agents.

probe

(prōb)
n.
1. A slender flexible surgical instrument with a blunt bulbous tip, used to explore a wound or body cavity.
2. The act of exploring or searching with a device or instrument.
3. A substance, such as DNA, that is radioactively labeled or otherwise marked and used to detect or identify another substance in a sample.

probe

1 any device used to explore an opening such as a sinus or wound. Common types of probes include a probe with a blunt leading end, a drum probe with a sounding device for the detection of metallic foreign particles, and an eyed probe with a small opening at one end for introducing a guiding thread along a fistula.
2 any device or agent, such as a radioactively tagged isotope or a molecular deoxyribonucleic acid fragment probe, inserted into a medium to obtain information about a structure or substance.
3 a Doppler probe used to detect blood flow in a vessel.
4 the act of exploring or investigating an action or unfamiliar matter.

probe

Surgery Explorer A long, thin, usually metal instrument with a blunt or bulbous tip which is used to poke around in cavities, fistulae, sinuses, and wounds

probe

(prōb)
1. A slender rod of flexible material, with blunt bulbous tip, used for exploring sinuses, fistulae, other cavities, or wounds.
2. A device or agent used to detect or explore a substance, e.g., a molecule used to detect the presence of a specific fragment of DNA or RNA or of a specific bacterial colony.
3. To enter and explore, as with a probe.
[L. probo, to test]

probe

Any slender, usually blunt-ended instrument used to explore a passageway, cavity or wound.

probe

  1. a defined NUCLEIC ACID MOLECULE that can be used in MOLECULAR HYBRIDIZATION procedures to identify specific nucleic acid sequences that are complementary to it, by virtue of a LABEL generally carried by the probe. The label may be radioactive and detected by an AUTORADIO GRAPH, or non-radioactive, such as a fluorochrome, which could be detected by FLUORESCENCE. Under the right conditions the probe will hybridize only with a perfectly matching nucleic acid target molecule. The hybrid thus formed can then be detected by the appropriate method, depending upon the label on the probe. The probe may be DNA, RNA or a synthetic OLIGONUCLEOTIDE. Nucleic acid probes have a wide range of applications, such as in the detection of MICROORGANISMS in clinical specimens, in food and water samples, in the detection of genetic DISEASES (see RFLPs and in the identification of individuals (see FINGERPRINTING).
  2. a labelled molecule, such as a MONOCLONAL ANTIBODY, that can bind to a specific PROTEIN being searched for. The label permits detection.

probe

(prōb)
A slender rod of rigid or flexible material, with a blunt bulbous tip, used for exploring sinuses, fistulae, or wounds.
[L. probo, to test]

probe,

n 1. a slender, flexible instrument designed for introduction into a wound or cavity for purposes of exploration; in dentistry, it is mainly used for measuring and evaluating the sulcus or pocket region.
v 2. to use such an instrument.
probe, automated,
n an automatically controlled instrument used to assess the severity of periodontal disease. It may provide more consistent readings than manual probes. Also called
controlled force probes.
probe, automatic,
n a device used to explore a cavity or a wound with minimal manual operation.
probe, depth,
n the amount of space from the position of the tip of the periodontal probe to the gingival margin.
probe, furcation,
n a hand-activated, blunt-tipped probing tool that is used to measure bone loss in teeth with multiple roots. See also probe, Nabers furcation.
probe, Hu-Friedy
n.pr a thin, rounded and tapered handheld tool that is used to measure periodontal pocket depth. The millimeter marks are color coded for easier assessment.
probe, lacrimal
n an instrument useful in probing the lumen of duct structures, such as the nasolacrimal or salivary gland ducts.
probe, Marquis
n.pr the probe is color coded by alternately colored or black and silver bands that mark 3, 6, 9, and 12 MM.
probe, Michigan O,
n.pr a slender, round, conical-shaped device with a thin diameter used to assess the progression and extent of disease within the tissues of the oral cavity. The probe is marked at 3, 6, and 8 MM.
probe, Nabers furcation,
n.pr an adapted device used to examine the layout and extent of an advanced furcation. See also furcation.
probe, periodontal,
n a fine-calibrated instrument designed and used for measuring the depth and topography of gingival and periodontal pockets. Also used to determine the degree of attachment and adaptation of the gingival tissues to the tooth. Automated devices are now available for dental offices and clinics.
Marquis color-coded probe.
Nabers probe.
Williams probe.
probe, Williams,
n.pr a round, conical-shaped device used to assess the progression and extent of disease within the tissues of the oral cavity. The probe has markings at 1, 2, 3, 5, 7, 8, 9, and 10 MM. The probe may be available with color coding.

probe

1. a long, slender instrument for exploring wounds or body cavities or passages.
2. a radiolabeled DNA molecule such as a phage, viral or plasmid carrying a foreign DNA sequence used in hybridization to detect DNA homologous to the fragment.

cryosurgical probe
electroejaculation probe
a probe containing electrodes which is inserted in the rectum of the male animal and connected to an electrical power source to stimulate the nerves controlling emission and ejaculation of the semen.
freezing probe