scholarly journals Morphometry of infraorbital foramen applied to local anesthesia in hoary fox (Lycalopex vetulus Lund, 1842)

2020 ◽  
Vol 21 ◽  
Author(s):  
Henrique Inhauser Riceti Magalhães ◽  
Mateus Santos Moreira ◽  
Ygor Henrique de Paula ◽  
Ricardo Lucas Ferreira Junior ◽  
Maria Angélica Miglino ◽  
...  
Keyword(s):  
Sagittal Plane ◽  
Anesthetic Techniques ◽  
Incisor Tooth ◽  
Infraorbital Foramen ◽  
The Third ◽  
Specific Morphology ◽  
Frontal Process ◽  
Molar Teeth ◽  
Species Specific ◽  
Caudal Margin

Abstract Whilst considering the need anesthetic techniques supported by species-specific morphology, it has been sought to describe the morphometry of the Hoary Fox's infraorbital foramen with aims at correlating its topography with points of anatomic reference in the skull, thereby providing subsidy for a more effective local anesthetic block in that species. Four skulls of Lycalopex vetulus had been used, from which all of the measurements in each antimere were performed. The infraorbital foramen was located at the maxilla bone, dorsally-wise from the third upper pre-molar tooth, and, from the ventral end of its caudal margin, it would stand apart from the alveolar margin of that bone by 4.19 mm, in average; from the orbital margin at the level of the lacrimal foramen by 14.10 mm; from the dorsal end of the frontal process of the zygomatic bone by 37.10 mm; from the rostral end of the alveolar margin of the first upper incisor tooth by 38.54 mm; and, from the caudal end of the nuchal crest by 100.53mm - at the level of the median sagittal plane; as it also presented a sagittal axis of 5.21 mm in average. It is suggested that, for the Hoary Fox, the needle be introduced by 4.19 mm in contact with the maxilla bone, in a perpendicular fashion, and in a ventral-dorsal orientation from the alveolar margin of the same - whilst using, as an anatomic reference, the diastema that exists between the third and the fourth upper pre-molar teeth.

Secondary Fractures Following Internal Fixation in Two Horses

1989 ◽  
Vol 02 (03) ◽  
pp. 125-128
Author(s):  
E. M. Gaughan ◽  
N. G. Duchar
Keyword(s):  
Internal Fixation ◽  
Sagittal Plane ◽  
Proximal Phalanx ◽  
Fracture Repair ◽  
Fracture Line ◽  
Carpal Bone ◽  
Fracture Plane ◽  
The Third ◽  
Lag Screw ◽  
Secondary Fractures

SummaryImplant associated fractures have not been reported in horses. Two horses were evaluated for fractures in the fore limbs, occurring subsequent to previous fracture repair. Previously, the horses had sustained fractures of unusual configurations which were repaired using internal fixation. Following repair and healing of the fractures, secondary fractures occurred in the same bone, but in a different (more common) configuration. The first horse was evaluated ten months following lag screw fixation of a longitudinal fracture of the proximal phalanx in a frontal plane. This horse presented with a more typical comminuted fracture in the sagittal plane with the screws from the first fixation lying in the fracture line. This fracture was successfully treated with a cast. The second horse was examined eightteen months after repair of a medial sagittal slab fracture of the third carpal bone. The horse presented with a more typical dorsal slab fracture of the third carpal bone with the previously placed lag screw lying in the fracture line. The screw was removed and a lag screw was placed perpendicular to the new fracture plane through the dorsal surface of the third carpal bone to repair the fracture.

scholarly journals Microhardness in pressing layers of prefabricated modified acrylic resin teeth

2014 ◽  
Vol 62 (2) ◽  
pp. 143-147
Author(s):  
Ricardo dos Santos BAPTISTA ◽  
Gustavo Duarte MENDES ◽  
Milton Edson MIRANDA ◽  
Cecilia Pedroso TURSSI
Keyword(s):  
Analysis Of Variance ◽  
Aluminium Oxide ◽  
Acrylic Resin ◽  
Superficial Layer ◽  
The Third ◽  
Molar Teeth ◽  
Artificial Teeth ◽  
Knoop Indenter

OBJECTIVE: The aim of this study was to evaluate the microhardness in pressing layers of prefabricated modified acrylic resin teeth. METHODS: Lower first molar teeth with two (Biotone(r) IPN and Bioform(r)) or three pressing layers (Artiplus(r), Trilux(r) Eurovipi, and Natusdent(r)) were hemisected in a bucco-lingual plane and embedded in a self-curing acrylic resin (n =10). Specimens were then ground flat and polished using 400, 600 and 1200 aluminium oxide paper in a rotatory polisher. In each pressing layer, microhardness was measured using a Knoop indenter in three different locations spaced 300 µm apart under a 10-g load, applied for 5 sec. RESULTS: Analysis of variance and Tukey's tests demonstrated that there was no difference in microhardness in the first layer of the teeth analyzed (p = 0.355), whereas in the second layer, the brand Artiplus(r) showed higher values when compared to the brand Natusdent(r) (p = 0.018). For the third layer, the brands Artiplus(r) and Trilux(r) Eurovipi revealed higher microhardness when compared to Natusdent(r) teeth (p < 0.001). CONCLUSION: For the outer most superficial layer of the artificial teeth, the microhardness of the different brands was similar, while differences were noted for the second and third layers among the artificial teeth, with Artiplus(r) teeth showing higher microhardness than Natusdent(r).

The Oblique Lateral Jaw Radiograph

1974 ◽  
Vol 1 (4) ◽  
pp. 139-142
Author(s):  
C. P. Adams
Keyword(s):  
Present Article ◽  
Third Molar ◽  
Third Molars ◽  
X Ray ◽  
The Third ◽  
Molar Teeth ◽  
Relationship Of ◽  
The Relationship ◽  
Film Area

The Oblique Lateral Jaw Radiograph has been used as a routine diagnostic x-ray view for many years as an aid to orthodontic diagnosis and for the assessment of the positions of unerupted third molar teeth. Many methods for obtaining clear undistorted views of the teeth have been suggested from a freehand setting up of film, patient and x-ray tube, to the use of simple orientated devices. The present article describes a method of standardizing the relationship of film and x-ray tube to one another so that it is only necessary for the radiographer thereafter to place the patient on the film area in a manner depending on whether a view. is required of the third molars only or of the complete upper and lower buccal segments.

In vitro development of cyathostomin larvae from the third stage larvae to the fourth stage: morphologic characterization, effects of refrigeration, and species-specific patterns

2009 ◽  
Vol 163 (4) ◽  
pp. 348-356 ◽  
Author(s):  
Emanuele Brianti ◽  
Salvatore Giannetto ◽  
Donato Traversa ◽  
Sharon R. Chirgwin ◽  
Krishna Shakya ◽  
...  
Keyword(s):  
Fourth Stage ◽  
In Vitro Development ◽  
The Third ◽  
Third Stage ◽  
Species Specific ◽  
Vitro Development

Induction of superovulation by immunoneutralization of endogenous inhibin through the increase in the secretion of follicle-stimulating hormone in the cyclic golden hamster

1996 ◽  
Vol 151 (1) ◽  
pp. 65-75 ◽  
Author(s):  
H Kishi ◽  
T Okada ◽  
M Otsuka ◽  
G Watanabe ◽  
K Taya ◽  
...  
Keyword(s):  
Plasma Levels ◽  
Plasma Concentrations ◽  
Follicular Development ◽  
Daily Injection ◽  
Important Indicator ◽  
The Third ◽  
Progesterone Secretion ◽  
Control Serum ◽  
Species Specific ◽  
Specific Number

Abstract The present study was conducted to study the effect of immunoneutralization against endogenous inhibin on FSH, LH, oestradiol-17β and progesterone secretion and to investigate the effect of removal of endogenous inhibin on subsequent follicular development in the hamster. After treatment with anti-inhibin serum (inhibin-AS) at 1100 h on day 2 of the oestrous cycle (day 1=day of ovulation), a marked increase in plasma levels of FSH and a slight increase in plasma levels of LH were noted and pituitary contents of FSH, but not LH, were also increased. In the group treated with inhibin-AS, superovulation occurred on day 1 of the following cycle. Plasma levels of oestradiol-17β markedly increased with the increase in the number of ovulations induced by human chorionic gonadotrophin (hCG) as compared with those in control animals. In the second cycle, plasma concentrations and pituitary contents of FSH in the animals given 200 μl inhibin-AS still showed high values as compared with those in the animals treated with control serum, although superovulation did not occur on day 1 of the third cycle. Plasma concentrations and pituitary contents of LH in the hamster given 200 μl inhibin-AS tended to decrease as compared with those in control animals during the second cycle. Plasma concentrations of oestradiol-17β in the animals treated with 200 μl inhibin-AS changed in a similar way to controls. A marked increase in plasma concentrations of progesterone was noted on days 1 and 2 of the second cycle in the group receiving inhibin-AS. The twice daily injection of 1 IU hCG during the second cycle to the animals given 200 μl inhibin-AS induced superovulation on day 1 of the third cycle. These results indicate that circulating inhibin may be an important indicator of the number of developing follicles and may maintain the species-specific number of developing follicles through suppression of FSH secretion in the cyclic hamster. They also suggest that high levels of inhibin slightly suppress plasma levels of LH, indicating that plasma LH may also regulate follicular development in the cyclic hamster. Journal of Endocrinology (1996) 151, 65–75

scholarly journals Better molecular preservation of organic matter in an oxic than in a sulphidic depositional environment: evidence from of <i>Thalassiphora pelagica</i> (Dinoflagellata, Eocene) cysts

2019 ◽  
Author(s):  
Gerard J. M. Versteegh ◽  
Alexander J. P. Houben ◽  
Karin A. F. Zonneveld
Keyword(s):  
Organic Matter ◽  
Depositional Environment ◽  
Kerguelen Plateau ◽  
Reactive Component ◽  
Pyrolysis Gas ◽  
Rhine Graben ◽  
Specific Morphology ◽  
Initial Hypothesis ◽  
Gas Chromatography Mass Spectroscopy ◽  
Species Specific

Abstract. Anoxic sediments as compared to oxic settings encompass a much higher proportion of relatively labile and thus more reactive organic matter, naturally giving rise to condensation reactions (such as vulcanisation) transforming the original biomolecules into geomolecules. For the oxic environment where the labile, reactive, component is rapidly removed, such transformation and condensation is much less likely so that one would expect a structurally much better preservation of the more refractory initial biomolecules. To test this hypothesis, initially identical biomolecules need to be compared between different preservational environments. Here, we use the species specific morphology of organic microfossils to assure a single initial biosynthetic product (the cysts of the fossil dinoflagellate species Thallasiphora pelagica) for comparison. We assess the macromolecular structures of cysts from the Eocene (~ 40 Ma) sulphidic Rhine Graben and the oxic Kerguelen Plateau and compare them with each other and the structures of recent cysts. While between the sites the T. pelagica cysts are morphologically identical, pyrolysis gas chromatography mass spectroscopy and micro Fourier transform infra red analyses show that their macromolecular characteristics are strongly different. The cysts deposited in the sulphidic Rhine Graben show a strong contribution of long-chain aliphatic moieties and organic sulphur, absent in the material deposited on the oxic Kerguelen Plateau. Comparison with recent cyst walls suggests a much better molecular preservation for the oxic depositional environment, confirming our initial hypothesis. This leads to the conclusion that the best preservation of molecular structure is not necessarily where most organic matter gets preserved, which, in turn, is important for understanding the nature and fate of sedimentary organic matter.

scholarly journals Kajiansudut inklinasi gigi molar ketiga rahangbawahpre-erupsi pada kelompok umur14 -17 tahun(The pre-eruptedstudyof mandibular thirdmolar inclinationamong 14 to 17 year old)

2014 ◽  
Vol 13 (2) ◽  
pp. 95
Author(s):  
Nurlailia DS ◽  
Mei Syafriadi
Keyword(s):  
Third Molar ◽  
Population Group ◽  
Age Group ◽  
Second Molar ◽  
Group Iii ◽  
The Third ◽  
Tooth Impaction ◽  
Molar Teeth ◽  
To Come ◽  
Ray Projection

At the beginning of the growth, tooth inclination is mesioangular, then move gradually to come into contact with thedistal surface of the second molar and further commit to sliding movement parallel to second molar axis. This positionwill be retained to achieve the eruption way to oral cavity. However, the last decade reported incidence increasedimpaction of the third molar teeth in the lower jaw. This study was aimed to study the level of pre-eruption of mandibularthird molar in the population group aged 14-17 years to predict the risk of tooth impaction or not. Differentiatedpopulations on cluster I, age 14-15 years old; group II, 15.1-16 years old; and group III 16.1-17 years old. Researchcarried out by clinical observation and measurement of at Department of Radiology in Jember University with 48people selected based on predetermined criteria. X-ray projection was exposed by paralleling technique on the lowerthird molar teeth, left and right. The results showed 43.75% of 14-15 year old group had the third molar angle interval50-56°; 15.1-16 year age group, 80% have 57-70° angle interval, and 16.1-17 years age group, 46.67% has angularinterval 64-70°. It was concluded that a large interval of the third molar angle increase due to the increased of age,and the angle is different between groups based on gender.

Addressing challenges in biodiversity conservation with fish otolith death assemblages: the state-of-the-art

2021 ◽  
Author(s):  
Konstantina Agiadi ◽  
Paolo G. Albano
Keyword(s):  
Anthropogenic Impacts ◽  
Marine Conservation ◽  
Habitat Modification ◽  
Valuable Insight ◽  
Sea Bottom ◽  
Specific Morphology ◽  
Death Assemblages ◽  
Fish Remains ◽  
Species Specific ◽  
Insight Into

&lt;p&gt;Fish otoliths are incrementally growing aragonitic elements found in the inner ear of most fishes. They have species-specific morphology that enable species level identification and they are excellent high-resolution recorders of ambient water conditions, enabling the reconstruction of past fish faunas and their environment. Although they have been studied as fossils for almost 150 years, and they are very useful tools for tracking lifestyle and population changes in modern fishes, otolith death assemblages recovered from sea bottom sediments have been studied only much more recently. Still, these fish remains can provide valuable insight into past fish faunas before most anthropogenic impacts, such as climate warming, habitat modification and biological invasions. Here, we present an overview of research done until now on otolith death assemblages highlighting their applications for marine conservation.&lt;/p&gt;

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