scholarly journals Morphological Characteristics of the Cranial Base in Different Vertical Facial Types

2014 ◽  
Vol 23 (3) ◽  
pp. 323-328 ◽  
Author(s):  
Na An ◽  
Yi Liu ◽  
Yan Wang ◽  
Lu Bai ◽  
Ying Zheng ◽  
...  
Keyword(s):  
Morphological Characteristics ◽  
Cranial Base ◽  
Facial Types

scholarly journals Morphological Characteristics of the Cranial Base in Sagittal Malocclusion

2013 ◽  
Vol 22 (2) ◽  
pp. 249-254 ◽  
Author(s):  
Yi Liu ◽  
Fan Liu ◽  
Ying Zheng ◽  
Xin Yu
Keyword(s):  
Morphological Characteristics ◽  
Cranial Base

scholarly journals Morphological Characteristics of the Cranial Base of Early Angle's Class II Division 1 Malocclusion in Permanent Teeth

2017 ◽  
Vol 35 (2) ◽  
pp. 589-595 ◽  
Author(s):  
Xiu-Ping Wu ◽  
Jing Xuan ◽  
Han-yan Liu ◽  
Mei-rong Xue ◽  
Li Bing
Keyword(s):  
Morphological Characteristics ◽  
Class Ii ◽  
Cranial Base ◽  
Permanent Teeth ◽  
Division 1 ◽  
Class Ii Division 1

Midsubtemporal Ridge as a Predictor of the Lateral Loop Formed by the Maxillary Nerve and Mandibular Nerve: A Cadaveric Morphological Study

2011 ◽  
Vol 69 (suppl_1) ◽  
pp. ons95-ons98 ◽  
Author(s):  
Masahiko Wanibuchi ◽  
Gen Murakami ◽  
Taro Yamashita ◽  
Yoshihiro Minamida ◽  
Takanori Fukushima ◽  
...  
Keyword(s):  
Early Stage ◽  
Morphological Characteristics ◽  
Cranial Base ◽  
Mandibular Nerve ◽  
Maxillary Nerve ◽  
Lateral Triangle ◽  
Adjacent Structures ◽  
Lateral Loop ◽  
Bony Ridge ◽  
Cranial Base Surgery

Abstract BACKGROUND: The lateral loop formed by the maxillary nerve (V2) and the mandibular nerve (V3) consists of a part of the far lateral triangle of the cavernous sinus. Because this triangle becomes a surgical corridor of the preauricular infratemporal fossa approach and a landmark of the extradural approach for the ganglion-type trigeminal schwannomas, identification of the lateral loop has important implications at the early stage of middle cranial base surgery. We realized that a bony ridge usually existed just lateral to the lateral loop. OBJECTIVE: To nominate midsubtemporal ridge (MSR) as the name for this anatomically unnamed bony ridge and to clarify its features. METHODS: Using 35 cadaver heads, we measured the shape of the MSR on both sides and the distance between the MSR and the adjacent structures. RESULTS: The MSR was recognized in 60 of 70 specimens (85.7%). The bony protrusion was 2.9 ± 1.1 mm in height, 6.0 ± 2.1 mm in width, and 9.1 ± 3.2 mm in length. A single peak with anteroposterior length was common in 47 of 60 specimens (78.3%). The MSR was located at the midpoint of the V2 and V3 in 28 specimens (46.7%) and existed 10.7 ± 3.6 mm lateral from the line that bound the foramen rotundum and the foramen ovale. CONCLUSION: We demonstrate morphological characteristics of the MSR. These data on the MSR will assist the surgeon in identifying the lateral loop as a surgical landmark during middle cranial base surgery.

scholarly journals Influence of the cranial base flexion on Class I, II and III malocclusions: a systematic review

2017 ◽  
Vol 22 (5) ◽  
pp. 56-66 ◽  
Author(s):  
Kélei Cristina Mathias de Almeida ◽  
Taísa Boamorte Raveli ◽  
Camila Ivini Viana Vieira ◽  
Ary dos Santos-Pinto ◽  
Dirceu Barnabé Raveli
Keyword(s):  
Systematic Review ◽  
Skull Base ◽  
Morphological Characteristics ◽  
Qualitative Evaluation ◽  
Cranial Base ◽  
Acute Angle ◽  
Obtuse Angle ◽  
Class Iii ◽  
Base Angle ◽  
Division 1

ABSTRACT Objective: The aim of this study was to perform a systematic review on the morphological characteristics of the skull base (flexion, anterior length and posterior length) and the concomitant development of malocclusions, by comparing differences in dimorphism, ethnicity and age. Methods: The articles were selected by means of electronic search on BBO, MEDLINE and LILACS databases from 1966 to 2016. A qualitative evaluation of the methodologies used on the articles was also performed. Results: Although the literature on this topic is abundant, only 16 articles were selected for the present systematic review. The cranial base angle itself does not seem to play a significant role in the development of malocclusions. In fact, the cranial base angle is relatively stable at the ages of 5 to 15 years. Conclusions: A more obtuse angle at the skull base, in association or not with a greater anterior length of the cranial base, can contribute to the development of Class II division 1 malocclusions. On the other hand, a more acute angle at the skull base can contribute to a more anterior positioning of the mandible and to the development of Class III malocclusions.

scholarly journals Relationship of maxilla to cranial base in different facial types–a cephalometric evaluation

2012 ◽  
Vol 2 (1) ◽  
pp. 30-35 ◽  
Author(s):  
Tarun Rana ◽  
Rohit Khanna ◽  
Tripti Tikku ◽  
Kiran Sachan
Keyword(s):  
Cranial Base ◽  
Facial Types ◽  
Relationship Of

Cell Wall Ultrastructure in Three Strains of a Cariogenic Streptococcus

1971 ◽  
Vol 29 ◽  
pp. 338-339
Author(s):  
M. J. Kramer ◽  
Alan L. Coykendall
Keyword(s):  
Cell Wall ◽  
Dental Caries ◽  
Streptococcus Mutans ◽  
Microscopic Study ◽  
Electron Microscopic Study ◽  
Genetic Heterogeneity ◽  
Morphological Characteristics ◽  
Electron Microscopic ◽  
Dna Reassociation ◽  
Wall Ultrastructure

During the almost 50 years since Streptococcus mutans was first suggested as a factor in the etiology of dental caries, a multitude of studies have confirmed the cariogenic potential of this organism. Streptococci have been isolated from human and animal caries on numerous occasions and, with few exceptions, they are not typable by the Lancefield technique but are relatively homogeneous in their biochemical reactions. An analysis of the guanine-cytosine (G-C) composition of the DNA from strains K-1-R, NCTC 10449, and FA-1 by one of us (ALC) revealed significant differences and DNA-DNA reassociation experiments indicated that genetic heterogeneity existed among the three strains. The present electron microscopic study had as its objective the elucidation of any distinguishing morphological characteristics which might further characterize the respective strains.

Aberrant Type C Virus Production in a Cell Line Derived from Balb/3T3

1972 ◽  
Vol 30 ◽  
pp. 286-287
Author(s):  
N. Savage ◽  
A. Hackett
Keyword(s):  
Electron Microscopy ◽  
Cell Line ◽  
Leukemia Virus ◽  
Morphological Characteristics ◽  
Virus Production ◽  
Oncogenic Viruses ◽  
Endogenous Virus ◽  
Virus Particles ◽  
Moloney Leukemia Virus ◽  
A Cell

A cell line, UC1-B, which was derived from Balb/3T3 cells, maintains the same morphological characteristics of the non-transformed parental culture, and shows no evidence of spontaneous virus production. Survey by electron microscopy shows that the cell line consists of spindle-shaped cells with no unusual features and no endogenous virus particles.UC1-B cells respond to Moloney leukemia virus (MLV) infection by a change in morphology and growth pattern which is typical of cells transformed by sarcoma virus. Electron microscopy shows that the cells are now variable in shape (rounded, rhomboid, and spindle), and each cell type has some microvilli. Virtually all (90%) of the cells show virus particles developing at the cell surface and within the cytoplasm. Maturing viruses, typical of the oncogenic viruses, are found along with atypical tubular forms in the same cell.

DNA nick end labeling: a reliable marker for apoptosis?

1995 ◽  
Vol 53 ◽  
pp. 962-963
Author(s):  
Anne F. Bushnell ◽  
Sarah Webster ◽  
Lynn S. Perlmutter
Keyword(s):  
Cell Death ◽  
Cultured Cells ◽  
Apoptotic Cell ◽  
Morphological Characteristics ◽  
Detection Methods ◽  
Tissue Preparation ◽  
Preparation Methods ◽  
Dna Laddering ◽  
Disease States ◽  
Reliable Marker

Apoptosis, or programmed cell death, is an important mechanism in development and in diverse disease states. The morphological characteristics of apoptosis were first identified using the electron microscope. Since then, DNA laddering on agarose gels was found to correlate well with apoptotic cell death in cultured cells of dissimilar origins. Recently numerous DNA nick end labeling methods have been developed in an attempt to visualize, at the light microscopic level, the apoptotic cells responsible for DNA laddering.The present studies were designed to compare various tissue processing techniques and staining methods to assess the occurrence of apoptosis in post mortem tissue from Alzheimer's diseased (AD) and control human brains by DNA nick end labeling methods. Three tissue preparation methods and two commercial DNA nick end labeling kits were evaluated: the Apoptag kit from Oncor and the Biotin-21 dUTP 3' end labeling kit from Clontech. The detection methods of the two kits differed in that the Oncor kit used digoxigenin dUTP and anti-digoxigenin-peroxidase and the Clontech used biotinylated dUTP and avidinperoxidase. Both used 3-3' diaminobenzidine (DAB) for final color development.

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