What's the difference between dentary and mandible?
Dentary
Definition:
(a.) Pertaining to, or bearing, teeth.
(n.) The distal bone of the lower jaw in many animals, which may or may not bear teeth.
Example Sentences:
(1) The documenting fossils, an incomplete dentary containing three teeth, and four isolated teeth from other, conspecific individuals (Fig.
(2) A diagnostic mammalian character is jaw articulation between squamosal and dentary bones, replacing the quadrate-articular joint of reptiles.
(3) In addition, numerous replacement teeth and tooth germs in various stages of development are located in a cavity in the dentary bone.
(4) The mammalian mandible, a derivative of another membraneous bone of the reptilian lower jaw, the dentary, possesses secondary cartilages in the angular and condylar processes.
(5) Two dental cleansing products, Rc-Prep and Largal Ultra, were subjected to a comparative study, evaluating their efficacy in vitro on 15 recently-extracted dentary units, through optic microscopy applied on the dentine wall of the instrumented root canal.
(6) Auditory efficiency, and sensitivity to higher sound frequencies were enhanced by diminution and loosening of the postdentary elements and quadrate, along with transference of musculature from postdentary elements to the dentary.
(7) The highly mobile symphysis, spherical dentary condyle, loss of superficial masseter muscle and zygoma, and the simplified zalamnodont molars all appear to be related to the large amount of mandibular rotation that occurs during occlusion.
(8) A newly discovered Argentinian Middle Triassic form shows, for the first time in an ancestral reptile, definite evidence of a squamosal-dentary articulation supplementary to the persistent primitive connection.
(9) Stage 39 CMS embryos showed shortening of the dentary and Meckel's cartilage.
(10) Although the labial surface of the dentary lacks a periosteal covering and some of the bone lacks any covering at all, it remains functional throughout the life of the animal.
(11) The dentary-squamosal jaw joint evolved more than once in advanced cynodont therapsids or their descendants, probably as a buttress against the reaction force created at the articulation by the adductor jaw musculature.
(12) These changes were made possible by associated modifications, including posterior expansion of the dentary.
(13) Additionally, a proposal was put forth for a retained canine teeth classification that may clearly and simply outline the retention, be easily understood and remembered, and may also apply to retained dentary organs with some similarity to canines as to their shape and root number.
(14) These stresses are: (1) dorsoventral shear of the symphysis due to the transfer of force from balancing to chewing sides, (2) bending of the symphysis causing tension along the inferior and compression along superior borders due to torsion on the dentaries from the jaw closing muscles, and (3) antero-posterior shear of the symphysis due to an anteriorly directed stress on the chewing side.
(15) As hyaline-cell cartilage is densely cellular and as that attached to the dentary, maxilla and cleithrum develops from the periosteum of these membrane bones, it must be regarded as secondary cartilage according to current concepts.
(16) Ultrathin sections of the nasal barbel of the channel catfish, Ictalurus punctatus, were studied in the electron microscope and the fine structure was compared to that of barbels of other teleosts and to the mandibular (dentary) barbels of I. punctatus.
(17) Although variability was not considered as is usual in clinical studies, in vitro evaluation as observed in this study allows a more accurate comparative analysis, since it was performed on one individual tooth, with analogous instrumentation and on dentary tissue with similar characteristics.
(18) The banding patterns and relative amounts of the proteins from dentary, vertebra and scale showed a basic similarity.
(19) The electrophoretic patterns of the proteins extracted from dentary, vertebra and scale with the phosphate buffer, 0.1 NHcl and SDS solution were studied to investigate their molecular aspects.
(20) The development of hyaline-cell cartilage attached to membrane (dentary, maxilla, nasal, lacrimal and cleithrum) and cartilage (basioccipital) bones has been studied in the viviparous black molly, Poecilia sphenops.
Mandible
Definition:
(n.) The bone, or principal bone, of the lower jaw; the inferior maxilla; -- also applied to either the upper or the lower jaw in the beak of birds.
(n.) The anterior pair of mouth organs of insects, crustaceaus, and related animals, whether adapted for biting or not. See Illust. of Diptera.
Example Sentences:
(1) The stabilized mandible allowed suspension of the tongue.
(2) Chronic mandibular osteomyelitis must be differentiated from malignant disease involving the mandible.
(3) A 40-year-old woman who had undergone a mastectomy of the right breast two years before was admitted in our department with metastatic malignant tumor of the mandible.
(4) One peculiar case of giant ameloblastoma of the mandible is reported in this paper.
(5) X-ray examination disclosed a spicule formation surrounding the osteolytic focus in the mandible.
(6) A bucco-lingual cross action through the mandible in the canine area revealed central osteomas.
(7) The sites of growth and remodeling, and the associated changes in cortical bone structure, have been studied in the chimpanzee mandible and compared with those previously reported in the human and macaque mandibles.
(8) The use of the pectoralis major muscle only flap in conjunction with a free iliac crest bone graft for reconstruction of the mandible is described.
(9) The results revealed that: (1) There were few genetic variants on allelic constitutions of Chinese KM mouse colonies, and the genetic distance among KM subcolonies is 0.008-0.027 positively related with the time the colony closed; (2) The unique position of S: KM mouse was shown in phylogenetic diagram of 4 KM subcolonies, which agrees with the result from mandible analysis; (3) The allelic constitutions of KM mice differs from NIH mice a Swiss derivative colony at Es-3, Es-10, Glo-1, Gpt-1, Got-2 and Mpi-1 loci and the average genetic distance between KM and NIH colonies is 0.131 + 0.011, which indicates that Chinese KM mice is one of non-Swiss derivative subspecies.
(10) A 5-year-old male Doberman Pinscher had nasal stenosis, dropped mandible, bilateral atrophy of masseter and temporalis muscles, and Horner's syndrome caused by aleukemic myelomonocytic leukemia.
(11) Fractures to the midface in the pediatric age group are rare because the mandible and cranium provide protection and absorb most of the traumatic impact.
(12) With this method, it is possible to compare bone repair activity between experimental subjects and also between selected zones within individual bones and thus objectively define the pattern of repair that occurred in various anatomic regions of the grafted mandible.
(13) Forty-eight periapical lesions were induced in the mandible of dogs.
(14) Part of the fibers was mixed with the spheno-mandibular ligament and attaches on the lingula of the mandible.
(15) These findings were associated with progressive tumor infiltration of the mandible and do not appear to be related to other reports of aggressive periodontitis associated with impaired immunologic functions in AIDS patients.
(16) Radiographic manifestations include endosteal sclerosis of the neurocranium with loss of the diploë, osteosclerosis and hyperostosis of the mandible with absence of the normal antegonial notches, endosteal sclerosis of the diaphyses of long bones (including metacarpals and metatarsals), and osteosclerosis of the pelvis.
(17) For the experimental studies, fractures of the jaw bone in terms of oblique osteotomies from angle to sigmoid notch of the mandible of the Malaysian monkeys were made by using #700 fissure bur and reduced and fixed them in terms of interosseous wiring.
(18) Periodontal pockets were more frequently observed in maxillae than mandibles.
(19) A complex form of pluridistrectual dysmorphic disorder (hypertelorism, prognathism, frontal bossing, multiple cysts of the mandible, calcification in falx cerebri, etc) was also present, suggesting a limited form of Gorlin's syndrome (nevoid basal cell carcinoma syndrome).
(20) A technique for extreme lengthening of the mandible is presented.