scholarly journals Different Resorptive Patterns of Two Avulsed and Replanted Upper Central Incisors Based on Scanning Electron Microscopy and Stereomicroscopic Analysis: A Case Report

2020 ◽  
Vol 10 (10) ◽  
pp. 3551
Author(s):  
Marta Mazur ◽  
Roberto Marasca ◽  
Livia Ottolenghi ◽  
Iole Vozza ◽  
Francesco Covello ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Root Resorption ◽  
Dental Trauma ◽  
Permanent Tooth ◽  
Single Individual ◽  
Factors Affecting ◽  
Tooth Avulsion ◽  
Depth Analysis ◽  
Scanning Electron

Dental trauma resulting in permanent tooth avulsion commonly affects the young population. The prognosis of replantation after avulsion depends on the natural history of inflammatory and replacement resorption. Several risk factors for type and onset of external resorption have been defined. This case study describes different resorptive patterns observed in two upper central incisors belonging to a single individual, avulsed in the same moment, and replanted after thirty-six hours of dry storage. The roots were analyzed by scanning electron microscopy and stereomicroscope imaging, to obtain an in-depth analysis of the resorptive pattern. The aim of this report is to: (i) underline the high variability in the incidence of root resorption after replantation across and within types of teeth and resorption; and (ii) underline the possible concurrence of different factors affecting the onset and type of resorptive pattern. In conclusion, an unpredictable pattern of resorption may account for the poor prognosis when teeth are replanted outside the current recommendations.

Scanning Electron Microscopy Evaluation of Dental Root Resorption Associated With Granuloma

2015 ◽  
Vol 21 (5) ◽  
pp. 1264-1270 ◽  
Author(s):  
Manila Chieruzzi ◽  
Stefano Pagano ◽  
Carlo De Carolis ◽  
Stefano Eramo ◽  
José M. Kenny
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Root Resorption ◽  
Root Apex ◽  
Average Diameter ◽  
Root Structure ◽  
Human Teeth ◽  
Periapical Lesions ◽  
Carious Lesions ◽  
Scanning Electron

AbstractThe inflammatory resorption of dental root apex (i.e., the process of removal of cementum and/or dentine through the activity of resorbing cells) may show different configurations and damage the apical root structure. As knowing the morphology of resorption areas of human teeth is essential for the success of endodontic treatments, we investigated the apical resorption by scanning electron microscopy, focusing on roots with granulomas. A total of 30 teeth (with penetrating carious lesions and chronic periapical lesions) were examined, the apical third of the roots were removed and analyzed to estimate periforaminal and foraminal resorption, shape and morphology of foramen resorption, centering of the periforaminal resorption area, and diameters of each apical foramen. Periforaminal resorption was present in all samples, whereas foraminal resorption was present in 92% of cases (mainly funnel shaped). Lacunae were observed in the foraminal resorption area with an average diameter of 35±14 μm. The major and minor diameters of the foramina in teeth with resorption were 443 and 313 μm, respectively (higher than in healthy teeth). This result indicates an expansion of the apical diameters caused by the pathology, which could encourage a different clinical instrumentation for these teeth.

scholarly journals Scanning Electron Microscopy of Root Resorption of Feline Teeth

2004 ◽  
Vol 66 (12) ◽  
pp. 1579-1581 ◽  
Author(s):  
Shigeo OHBA ◽  
Masato KUWABARA ◽  
Hiroshi KAMATA ◽  
Masayuki YUKAWA ◽  
Hideo KIBA
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Root Resorption ◽  
Scanning Electron

scholarly journals An M-CSF Receptor c-Fms Antibody Inhibits Mechanical Stress–Induced Root Resorption during Orthodontic Tooth Movement in Mice

2009 ◽  
Vol 79 (5) ◽  
pp. 835-841 ◽  
Author(s):  
Hideki Kitaura ◽  
Yuji Fujimura ◽  
Masako Yoshimatsu ◽  
Toshiko Eguchi ◽  
Haruka Kohara ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Mechanical Stress ◽  
Tooth Movement ◽  
Root Resorption ◽  
Orthodontic Tooth Movement ◽  
Coil Spring ◽  
Potential Therapeutic Target ◽  
Local Site ◽  
Scanning Electron

Abstract Objective: To examine the effect of anti-c-Fms antibody on odontoclastogenesis and root resorption in an orthodontic tooth movement mouse model. Materials and Methods: We used orthodontic tooth movement in which an Ni-Ti coil spring was inserted between the upper incisors and the upper first molar. Root resorption occurred in this model. Anti-c-Fms antibody was injected daily into a local site for 12 days during mechanical loading. Odontoclastogenesis and root resorption were assessed by histology and scanning electron microscopy. Results: The anti-c-Fms antibody significantly inhibited odontoclastogenesis and root resorption during orthodontic tooth movement. Conclusion: M-CSF and/or its receptor is a potential therapeutic target in mechanical stress– induced odontoclastogenesis, and injection of an anti-c-Fms antibody might be useful for inhibition of mechanical stress–induced root resorption during orthodontic tooth movement.

ABRASIVE EROSION STUDY ON S45C CARBON STEEL USING SAND BLASTING TECHNIQUE

2016 ◽  
Vol 23 (05) ◽  
pp. 1650035 ◽  
Author(s):  
MUHAMMAD YASIN NAZ ◽  
NOOR ILYANA ISMAIL ◽  
SHAHARIN ANWAR SULAIMAN ◽  
SHAZIA SHUKRULLAH
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Mild Steel ◽  
Impact Angle ◽  
Sand Blasting ◽  
Erosion Rates ◽  
Depth Analysis ◽  
Sand Particles ◽  
The Impact ◽  
Scanning Electron

Hydrocarbon fluids recovered from the reservoir are inevitably polluted with sand particles. Sanding is a source of several flow assurance problems in oil and gas industry. This study was aimed at investigating the effect of sand size and impact angle on the mild steel erosion by using a laboratory built sand blasting technique. S45C mild steel coupons were eroded with 45 [Formula: see text]m and 150[Formula: see text][Formula: see text]m sand particles for fixed exposure time of 1 h. Although in-depth analysis revealed an increase in surface erosion with the particle size, the fine sand also notably damaged the metal surface. Topographic scanning electron microscopy (SEM) and universal scanning electron microscopy (USPM) micrographs of the steel coupons showed significantly large difference between the peak and bottom of the eroded samples as compared to the blank coupon. The erosion rates calculated for 45 and 150 [Formula: see text]m sand particles were found in the range of 6.47[Formula: see text]mm/year to 6.84 mm/year and 8.31 mm/year to 8.79 mm/year, respectively. Additionally, a good agreement was seen among the erosion rates calculated using USPM and weight loss methods. The erosion rates calculated for coarse sand at 45[Formula: see text] and 90[Formula: see text] were found in the range of 4.58 mm/year to 4.72 mm/year and 8.31 mm/year to 8.79 mm/year, respectively. A large difference between the angle dependent erosion rates revealed a strong influence of the impact angle on erosion of the flow-lines.

Scanning electron microscopy reveals severe external root resorption in the large periapical lesion

2016 ◽  
Vol 79 (6) ◽  
pp. 495-500 ◽  
Author(s):  
Kensuke Ookubo ◽  
Atsushi Ookubo ◽  
Masaki Tsujimoto ◽  
Kouji Sugimoto ◽  
Shizuka Yamada ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Root Resorption ◽  
Periapical Lesion ◽  
External Root Resorption ◽  
Scanning Electron

Scanning electron microscopy in different techniques of microvascular anastomoses: categorization and factors affecting. A descriptive work

2007 ◽  
Vol 30 (4) ◽  
pp. 195-200
Author(s):  
Mohamed El-Shazly ◽  
Khaled Aly ◽  
Mahmoud Hifny ◽  
Mohamed El-Osaily ◽  
Mahmoud El-Otiefy
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Factors Affecting ◽  
Scanning Electron

Pathogenesis of Human Hair Defects

1974 ◽  
Vol 32 ◽  
pp. 12-13
Author(s):  
P.S. Porter ◽  
T. Aoyagi ◽  
R. Matta
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Human Hair ◽  
Standard Techniques ◽  
Scanning Electron

Using standard techniques of scanning electron microscopy (SEM), over 1000 human hair defects have been studied. In several of the defects, the pathogenesis of the abnormality has been clarified using these techniques. It is the purpose of this paper to present several distinct morphologic abnormalities of hair and to discuss their pathogenesis as elucidated through techniques of scanning electron microscopy.

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