What's the difference between premolar and tooth?

Premolar


Definition:

  • (a.) Situated in front of the molar teeth.
  • (n.) An anterior molar tooth which has replaced a deciduous molar. See Tooth.

Example Sentences:

  • (1) Maxillary and mandibular incisors and premolars of three rhesus monkeys were used.
  • (2) Erosion was observed on all teeth, but was commonest on the upper incisors, canines and premolars, and severest on palatal surfaces.
  • (3) Sound (n = 28) and carious (n = 123) approximal surfaces of extracted premolars and molars were radiographed.
  • (4) Four weeks after replantation, a more than threefold increase in PBF was measured in premolars with two roots, while PBF in premolars with one root and incisors was consistently reduced to an average of 40% of the controls.
  • (5) Molarization and premolarization of anterior teeth have never been reported before.
  • (6) The mandible does tend to rotate in a counterclockwise manner following enucleation of four first premolars without appliance therapy.
  • (7) Eight cases were studied separately, since three showed bilateral congenital absence of the second premolar, three showed unilateral congenital absence of the second premolar on the affected side, and two had the first permanent molar extracted.
  • (8) A "sweep" bend was incorporated to avoid unwanted side effects at the second premolar.
  • (9) Furthermore, agenesis of incisors, canines and premolars ranges from 0.4% in controls to 1.3% in propositi having reduced ULI and 5.0% in propositi with two missing ULI.
  • (10) The aberrant gland appeared on a panoramic radiograph as a radiolucency judged to be a periapical lesion on the right mandibular second premolar.
  • (11) All premolars were extracted after 1 calendar month.
  • (12) The purpose of the present radiologic study was to establish prevalence and distribution of pulp stones in mandibular premolars and molars in skulls of Norwegian Samis.
  • (13) One hundred and eighty seven mandibular premolars taken from a Turkish population were examined in this study.
  • (14) Forty molar and premolar teeth had non-retentive cavities prepared and restored with amalgam using (1) copal varnish (control), (2) a pin, (3) Amalgambond or (4) Panavia-Ex.
  • (15) Bone biopsies should be taken in either the premolar or the molar region of mandibular bodies.
  • (16) An unusual case of Stafne's bone cavity which presented in the canine-premolar region of the mandible is presented.
  • (17) Spaces needing prosthetic closure are transferred to more posterior regions of the dental arch, usually in the premolar region.
  • (18) In a second series of analyses, the mean lead concentrations of both dental hard tissues of premolars and permanent molars of young individuals from Strasbourg, rural Alsace, and Mexico City were compared.
  • (19) Autotransplantation of mandibular first premolars to the incisor region is suggested as an approach in selected cases.
  • (20) The samples were collected from both an intact fissure and a fissure with brown-stained defective enamel surface of the premolars of the lower jaw.

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.