DENDROCELUS 



360 



DENTES 



make up the ardor vitiz of the cerebellum, or that of 

 the uterus, is dendritic. 



Dendrocelus (den-dro-se' -lus) [devdpov, a tree ; KoiTiia, 

 belly]. In biology, having a branched intestine. 



Dendrodentine (den-di o-den' '-tin) [devdpov, a tree ; 

 dentine, tooth - tissue]. In biology, a tooth - tissue 

 formed by the blending of the dentine, enamel, and 

 cement of many teeth. 



Dendron (den'-dron) [dkvSpov, a tree]. Same as Dendrite. 



Dendrostyle {den' '-dro-stll) [devdpov, tree ; orvloc, 

 pillar]. In biology, Huxley's term for the stalk of 

 the hydroid stage of certain hydrozoans. 



Dengue (deng'-ga) [West Ind.]. A zymotic disease 

 somewhat resembling remittent fever, but much more 

 severe. It is characterized by racking pain in the head 

 and eyeballs, pain in the back and knees, arthralgia, 

 catarrhal inflammation of those mucous surfaces that 

 are exposed to the air, swollen salivary glands, and 

 measly eruptions. Cf. Bacteria, Synonymatic Table of 



Denidation (de-ni-da' '-shuii) [de priv. ; nidus, a nest]. 

 During involution after pregnancy, the process of dis- 

 integration and casting off of the superficial portion of 

 the uterine mucosa. 



Denis's Plasmin. A precipitate of uncoagulated blood 

 with sodic sulphate, and treated with sodic chlorid. 



Denneth's System. See Treatment, Methods of. 



De novo (de no / -vo) [L.]. Anew. 



Dens (denz) [L.:pl., Denies]. A tooth. See Teeth. 



Density (den'-sit-e) [densilas, thickness]. Closeness; 

 compactness. In electro-therapeutics, the amount of 

 electricity accumulated on a unit of surface. 



Dent (don(g)) [Fr.]. A tooth. 



Dentagra (den-ta'-grah) [dens, a tooth; aypa, a seizure]. 

 I . The Denticeps, an instrument for extracting teeth ; 

 a tooth-forceps. 2. The term is also applied to tooth- 

 ache. 



Dental (den'-tal) [dens, a tooth : gen., Dentis]. Pertain- 

 ing to the teeth. D. Apparatus, the teeth, together 

 with the alveoli in which they are implanted, and the 

 jaws ; also a set of artificial teeth. The instruments and 

 appliances employed in dental operations are likewise so 

 termed. D. Arches, arcades dentaires. The arches 

 formed by the teeth when arranged in their sockets in 

 the alveolar borders, or the arch formed by the alveolar 

 process of each jaw. D. Arteries, the arteries supply- 

 ing the teeth. See Arteries, Table of D. Atrophy, 

 atrophia dentalis. See Atrophy of the Teeth. D. Bone, 

 dentine. The osseous part of a tooth. D. Canals, the 

 canals that perforate the alveoli, and give passage to 

 the blood-vessels and nerves that enter the teeth at the 

 extremities of their roots. See Canal. D. Caries, 

 caries of the teeth. D. Cavity, cavitas pulpse ; cavum 

 dentis ; antrum dentale. The pulp-cavity. The cavity 

 occupied by the dental pulp in the interior of a tooth. 

 Its shape resembles that of the tooth ; it is larger in 

 young persons than in old, and when the teeth suffer 

 great loss of substance, either from mechanical or spon- 

 taneous abrasion, it sometimes becomes completely ob- 

 literated. See Abrasion of the Teeth. D. Engine, a 

 machine first introduced in 1870, but since greatly im- 

 proved, and which has almost wholly superseded the 

 use of hand-burs and drills. It is operated like a dental 

 lathe, and possesses a flexible cable, or an adjustable 

 arm and hand-piece, which afford great facility of 

 movement and adaptation. By means of attachments 

 to the hand-piece, drills can be operated at a right 

 angle with the shaft, at an acute angle, or with a back- 

 ward inclination of nearly forty-five degrees. 

 Burnishers, discs, etc., are also adapted to these dental 

 engines. D. Excavator, an instrument employed for 

 the removal of the decayed part of a tooth, preparatory 

 to the operation of filling. D. Exostosis. See 



Exostosis of the Teeth. D. File, a file manufactured 

 for operations on the teeth. See File, Dental. D. 

 Forceps. See Forceps for Extracting Teeth. D. 

 Glands. See Gland. D. Groove, a furrow on the 

 lower border of the upper jaw early in fetal lite, in 

 which the teeth are developed. D. Laboratory, a 

 room or place where the operations connected with 

 mechanical dentistry are performed. D. Necrosis, 

 odontonecrosis. 'see Necrosis of the Teeth. D. Neu- 

 ralgia, a form of neuralgia the immediate e\ 

 cause of which is owing to some disease of the dental 

 pulp. See Odontalgia. D. Organism, the organism 

 of the teeth ; the organic structure of these organs ; 

 the vital forces that govern them. D. Orthopedia, 

 the art of correcting deformity occasioned by irregular- 

 ity of the teeth, or other causes. See Irregularity of 

 the Teeth. D. Pathology, considers the causes and 

 different forms of the various diseases to which the teeth 

 are liable. D. Periostitis, periostitis dentium. In- 

 flammation of the dental periosteum or peridental 

 membrane. See Odontalgia, and Periodontitis. D. 

 Pulp, a soft, vascular, and highly sensitive sub- 

 stance, of a reddish-gray color, occupying the cavity of a 

 living tooth. It also constitutes the rudiment of a tooth. 

 The dental pulp is the principal blood-supply and 

 nerve-supply of the dentine. D. Pulp, Destruction 

 of; there are two methods of destroying the pulp ; one 

 by an operation, such as the use of a barbed brooch; 

 the other by the application of some devitalizing agent, 

 as arsenious acid. D. Ridges, the projecting borders 

 of the primitive dental groove. D. Sac, the sac that 

 encloses the developing tooth in the embryo. D. 

 Surgeon (chirurgien dentiste), surgeon-dentist, one 

 who devotes himself to the study and treatment of the 

 diseases of the teeth, and their connections, and the 

 adoption of substitutes for them when, by age, accident 

 or disease, they are lost. D. Therapeutics, con- 

 siders the methods and medicaments used in the treat- 

 ment of diseases of the teeth. D. tubuli, the tubes 

 occurring in the structure of the dentine. 



Dentalgia ( den-tal' -je-afi) [ dens, tooth ; alyoc, pain]. 

 Tooth-ache. 



Dentalis lapis (den-ta'-lis la' -pis) [L.]. Salivary cal- 

 culus ; tartar of the teeth. 



Dentaphone (den' '-taf-on) [dens, tooth ; <j>uvi/, sound]. 

 A modification of the audiphone, q. v., by means of 

 which the sound-waves are transmitted through the 

 bones of the head to the auditory apparatus. 



Dentarpaga (den-tar' -pa-gah) [dens, tooth; apiri)fi, 

 hook]. An instrument for the extraction of teeth. 



Dentate (den' -tat) [dens, a tooth]. In biology, ap- 

 plied to leaves, wings, or other flattened organs that 

 have their margins provided with acute teeth that point 

 directly outward from the margin. 



Dentatum (den-ta' -turn) [L.]. The dentate nucleus 

 of the cerebellum. D. olivae. See Dentoliva.' 



Dentes (den'-tez) [L., the plural of dens']. Teeth. 

 Teeth. D. acuti, the incisor teeth. D. adulti, the 

 teeth of second dentition. D. adversi, the incisor 

 teeth. D. angulares, the canine or cuspid teel 

 called, probably, because they are situated at the an- 

 gles of the alveolar arch, at the corners of the mouth, 

 or from the angular shape of their crowns. D. bicus 

 pidati, bicuspid teeth. D. canini, the cuspid 

 nine teeth ; so called from their resemblance to tin 

 teeth of a dog. D. cariosi, carious teeth. D. colum 

 ellares, the molar teeth. D. cuspidati, cuspid teeth 

 D. exserti [exsertere, to thrust out], teeth 

 project or are in front of the dental arch, but a] 

 more particularly to the cuspidati. D. incisores, in 

 cisor teeth. D. lactei, the milk, temporary, 

 ciduous teeth. See Deciduous Teeth. D. molares, 



