What's the difference between hair and tooth?

Hair


Definition:

  • (n.) The collection or mass of filaments growing from the skin of an animal, and forming a covering for a part of the head or for any part or the whole of the body.
  • (n.) One the above-mentioned filaments, consisting, in invertebrate animals, of a long, tubular part which is free and flexible, and a bulbous root imbedded in the skin.
  • (n.) Hair (human or animal) used for various purposes; as, hair for stuffing cushions.
  • (n.) A slender outgrowth from the chitinous cuticle of insects, spiders, crustaceans, and other invertebrates. Such hairs are totally unlike those of vertebrates in structure, composition, and mode of growth.
  • (n.) An outgrowth of the epidermis, consisting of one or of several cells, whether pointed, hooked, knobbed, or stellated. Internal hairs occur in the flower stalk of the yellow frog lily (Nuphar).
  • (n.) A spring device used in a hair-trigger firearm.
  • (n.) A haircloth.
  • (n.) Any very small distance, or degree; a hairbreadth.

Example Sentences:

  • (1) Cook, who has postbox-red hair and a painful-looking piercing in his lower lip, was now on stage in discussion with four fellow YouTubers, all in their early 20s.
  • (2) The surface of all cells was covered by a fuzzy coat consisting of fine hairs or bristles.
  • (3) We have isolated a murine cDNA clone, pCAL-F559, for the calcium-binding protein calcyclin by differential screening of a cDNA library made from RNA isolated from hair follicles of 6-d-old mice.
  • (4) White hair bulbs which demonstrated no TH activity formed 2SCD, but not 5SCD.
  • (5) Isolated outer hair cells from the organ of Corti of the guinea pig have been shown to change length in response to a mechanical stimulus in the form of a tone burst at a fixed frequency of 200 Hz (Canlon et al., 1988).
  • (6) We have reported on a simple and secure method of tying up hair during transplantation surgery for alopecia.
  • (7) Bone age has been analyzed mixed-longitudinally in a subsample of 370 patients (660 observations) and showed a slight retardation at all ages between 6 and 13 yr. Development of pubic hair of 91 subjects analyzed cross-sectionally was definitely retarded when compared to adequate reference data.
  • (8) Tumors were induced in athymic, T-cell-deficient nude mice and in syngeneic normal haired mice by treatment with low doses of 3-methylcholantrene (MCA).
  • (9) As I looked further, I saw that there was blood and hair and what looked like brain tissue intermingled with that to the right area of her skull."
  • (10) A new method of staining the keratin filament matrix allowing a visualization of the filaments in cross section of hair fibres has been developed.
  • (11) However, in subjects with alopecia there was no such difference and the growth rate of all the hairs showed a continuous distribution.
  • (12) No infection threads were found to penetrate either root hairs or the nodule cells.
  • (13) After 7 days, various stages of sensory hair degeneration could be observed.
  • (14) This review of androgenetic alopecia (AA) in women provides a summary of hair physiology and biochemistry, a general discussion of AA, and a brief description of other types of hair loss in women.
  • (15) Subungual hair penetration appears to be much less common.
  • (16) Steep longitudinal and transverse gradients of glycogen are known to exist in the organ of Corti of the guinea pig, with preferential accumulation in the outer hair cells of the apical turns.
  • (17) Of four normal tissues assessed, two (hair follicles and tissues responsible for development of leg contractures) showed no change in radioresponse after treatment with indomethacin, one (hematopoietic tissue) exhibited radioprotection, and one (jejunum) exhibited slight radiosensitization (enhancement factor, 1.12).
  • (18) On the other hand, the total number of missing hair cells, irrespective of location, was a good, general indicator of the hearing capacity in a given ear.
  • (19) The objective was to determine whether the parent axonal impulse train elicited by dual-hair stimulation was due to a temporal combining ("mixing"; Fukami, 1980) of the impulse trains elicited in the parent axons by the same stimulation to each hair alone.
  • (20) In addition to descriptions of variants of the root appearance for hairs removed from follicles in the three classical growth phases, several other commonly occurring root configurations are described and illustrated with photomicrographs.

Tooth


Definition:

  • (n.) One of the hard, bony appendages which are borne on the jaws, or on other bones in the walls of the mouth or pharynx of most vertebrates, and which usually aid in the prehension and mastication of food.
  • (n.) Fig.: Taste; palate.
  • (n.) Any projection corresponding to the tooth of an animal, in shape, position, or office; as, the teeth, or cogs, of a cogwheel; a tooth, prong, or tine, of a fork; a tooth, or the teeth, of a rake, a saw, a file, a card.
  • (n.) A projecting member resembling a tenon, but fitting into a mortise that is only sunk, not pierced through.
  • (n.) One of several steps, or offsets, in a tusk. See Tusk.
  • (n.) An angular or prominence on any edge; as, a tooth on the scale of a fish, or on a leaf of a plant
  • (n.) one of the appendages at the mouth of the capsule of a moss. See Peristome.
  • (n.) Any hard calcareous or chitinous organ found in the mouth of various invertebrates and used in feeding or procuring food; as, the teeth of a mollusk or a starfish.
  • (v. t.) To furnish with teeth.
  • (v. t.) To indent; to jag; as, to tooth a saw.
  • (v. t.) To lock into each other. See Tooth, n., 4.

Example Sentences:

  • (1) However in the deciduous teeth from which the successional tooth germs were removed, the processes of tooth resorption was very different in individuals, the difference between tooth resorption in normal occlusal force and in decreased occlusal force was not clear.
  • (2) Of the 622 people interviewed, a large proportion (30.5%) believed that the first deciduous tooth should erupt between the age of 5-7 months; the next commonly mentioned time of tooth eruption was 7-9 months of age; and 50.3% of the respondents claimed to have seen a case of prematurely erupted primary teeth.
  • (3) 4) Parents imagined that fruit drinks, carbonated beverages and beverages with lactic acid promoted tooth decay.
  • (4) The method used in connection with the well known autoplastic reimplantation not only presents an alternative to the traditional apicoectomy but also provides additional stabilization of the tooth by lengthing the root with cocotostabile and biocompatible A1203 ceramic.
  • (5) In the aetiology the Periodontitis apicalis and wounds after tooth extractions are in the highest position.
  • (6) It is of special interest because it presented as a periapical pathosis associated with a nonvital tooth and emphasizes the value of routine histopathologic examination of tissue.
  • (7) An 11-year clinical and radiographic follow-up of an avulsed tooth, replanted within 15 minutes, has been presented.
  • (8) It has been 40 years since the first community in the United States added a regulated amount of fluoride to its public water supply to prevent tooth decay.
  • (9) The odontogenic origin of ameloblastomas is based largely on the similarity in histologic appearance between the tumor and the developing tooth organ.
  • (10) It was shown that: although the oral hygiene level was very low and no dental treatments were performed, caries level was very low--although gingivitis rate was high, advanced periodontitis rate was low--the frequency of interincisive diastema (one subject out of 4 in the 15-19 age group), the progressive decline of tooth cutting, a traditional practice, in town people but the large extent of cola use (one adult out of two).
  • (11) The primary aim of future work must still be directed toward preventing the formation of a gap between the restoration and the tooth.
  • (12) This experiment is to observe the effect of pulsed electromagnetic field (PEMF) on orthodontic tooth movement of guinea pigs through transmission electron microscope (TEM).
  • (13) By scoring every section of a tooth in this way, an overview was obtained of the location of all caries lesions in the occlusal surface.
  • (14) In order to clarify the development of mandibular movements associated with growth and development of the stomatognathic system, we compared the mandibular movements of children with normal occlusion at different Hellman's dental age between IIA and IIIB, during tooth tapping movements using the following 7 different kinds of frequency; ad lib.
  • (15) It is not same to the stainless steel wire of traditional removable appliances which must be activated every time to produce a little tooth movement.
  • (16) Noxious conditioning stimulation of a tooth led to a temporary decrease of the threshold for the jaw-opening reflex elicited from a contralateral or adjacent tooth; only conditioning stimulation at an intensity producing a marked arousal reaction was effective in this respect.
  • (17) The tooth also gave a positive response to pulp-testing procedures, even though no new tissue could be demonstrated histologically.
  • (18) In eight consecutive patients referred to the University of Queensland Dental School for investigation of tooth surface loss, six had no measurable quantities of resting whole saliva, four had low values for stimulated saliva flow rates, and only two patients had buffer capacities within the normal range.
  • (19) (a) unaltered tooth, (b) access preparation, (c) instrumentation, (d) obturation, and (e) MOD cavity preparation; or 2.
  • (20) Probit analysis was used to derive the median age of tooth emergence.