The gingival epithelium of rodent molars with limited eruption

1980 ◽  
Vol 107 (3) ◽  
pp. 297-306 ◽  
Author(s):  
F.M. Eggert ◽  
J.P. Germain ◽  
B. Cohen
Keyword(s):  
Gingival Epithelium

The Ultrastructure of Monkey Gingival Epithelium

1967 ◽  
Vol 25 ◽  
pp. 16-17
Author(s):  
C.N. Sun
Keyword(s):  
Epithelial Cells ◽  
Macaca Nemestrina ◽  
Stratum Granulosum ◽  
Solution Ph ◽  
Gingival Epithelial Cells ◽  
Stratum Spinosum ◽  
Cell Layers ◽  
Gingival Epithelium ◽  
The Individual ◽  
Different Thickness

The present study demonstrates the ultrastructure of the gingival epithelium of the pig tail monkey (Macaca nemestrina). Specimens were taken from lingual and facial gingival surfaces and fixed in Dalton's chrome osmium solution (pH 7.6) for 1 hr, dehydrated, and then embedded in Epon 812.Tonofibrils are variable in number and structure according to the different region or location of the gingival epithelial cells, the main orientation of which is parallel to the long axis of the cells. The cytoplasm of the basal epithelial cells contains a great number of tonofilaments and numerous mitochondria. The basement membrane is 300 to 400 A thick. In the cells of stratum spinosum, the tonofibrils are densely packed and increased in number (fig. 1 and 3). They seem to take on a somewhat concentric arrangement around the nucleus. The filaments may occur scattered as thin fibrils in the cytoplasm or they may be arranged in bundles of different thickness. The filaments have a diameter about 50 A. In the stratum granulosum, the cells gradually become flatted, the tonofibrils are usually thin, and the individual tonofilaments are clearly distinguishable (fig. 2). The mitochondria and endoplasmic reticulum are seldom seen in these superficial cell layers.

Prevalence of Gingival Pigmentation and its Association with Gingival Biotype and Skin Colour

2021 ◽  
Vol 5 (1) ◽  
pp. 19-25
Author(s):  
Arjun Hari Rijal ◽  
Bhageshwar Dhami ◽  
Nashib Pandey ◽  
Deepa Aryal
Keyword(s):  
Strong Association ◽  
Cross Sectional Study ◽  
Skin Colour ◽  
Facial Skin ◽  
Cross Sectional ◽  
Attached Gingiva ◽  
Ethical Approval ◽  
Gingival Epithelium ◽  
Interdental Papilla ◽  
Gingival Biotype

Introduction: The facial appearance depends on several oral and extraoral factors including colour of facial skin and pigmentation of gingival epithelium. The colour of the gingiva varies among individuals and is thought to be associated with cutaneous pigmentation which ranges from light to dark brown or black colour. Objective: To assess the prevalence of physiological gingival pigmentation, gingival biotype and their association with skin colur in Nepalese subjects visiting Kantipur Dental College and Hospital (KDCH). Methods: This was an analytical cross-sectional study which was carried out from February 2020 to June 2020 in all patients of age-group 16 to 80 years visiting the Department of Periodontics at KDCH after ethical approval. Patients were recruited by convenience sampling and examined thoroughly to find out gingival biotype and extent of gingival pigmentation intraorally as well as skin colour extraorally. Results: In this study, 210 patients were examined among which, 105 (50%) were males and 105 (50%) were females. Out of 210, 33 (15.7%) had pink tissue without pigmentation, 84 (40%) had pigmentation only in attached gingiva, 58 (27.6%) in attached gingiva and interdental papilla, 32 (15.2%) had diffuse pigmentation involving all parts of gingiva, 2 (1%) had in marginal gingiva only, and 1 (0.5%) in marginal gingiva and interdental papilla. Conclusion: A strong association was found between gingival pigmentation and facial skin colour in present study (P <0.001). Establishing the pattern of gingival pigmentation in Nepalese population will help to choose a specific depigmentation therapy that will harmonise with skin colour.  

Expression and activity of thrombomodulin in human gingival epithelium: in vivo and in vitro studies

2000 ◽  
Vol 35 (3) ◽  
pp. 146-157 ◽  
Author(s):  
T. Matsuyama ◽  
Y. Izumi ◽  
K. Shibatate ◽  
Y. Yotsumoto ◽  
H. Obama ◽  
...  
Keyword(s):  
In Vitro Studies ◽  
Gingival Epithelium ◽  
Expression And Activity

scholarly journals The carcinogenic potential of cadmium in the palatal and gingival epithelium of rats: a morphologic and morphometric analysis

2004 ◽  
Vol 41 (3) ◽  
Author(s):  
Ana Carolina Fragoso Motta ◽  
Dante Antonio Migliari ◽  
Marco Antonio Gioso ◽  
Marilena Chinali Komesu ◽  
Miguel Angel Sala ◽  
...  
Keyword(s):  
Morphometric Analysis ◽  
Carcinogenic Potential ◽  
Gingival Epithelium

scholarly journals Expression of PCNA in oral gingival epithelium of aggressive and, chronic periodontitis—A pilot study

2013 ◽  
Vol 03 (01) ◽  
pp. 112-117 ◽  
Author(s):  
Penapy Jyostna ◽  
Manchala Sesha Reddy ◽  
Manyam Ravikanth ◽  
Mandalapu Narendra ◽  
Chini Dorasani Dwarakanath
Keyword(s):  
Pilot Study ◽  
Chronic Periodontitis ◽  
Gingival Epithelium ◽  
Oral Gingival Epithelium

scholarly journals Safety Assessment of Nano-Hydroxyapatite as an Oral Care Ingredient according to the EU Cosmetics Regulation

Cosmetics ◽  
2018 ◽  
Vol 5 (3) ◽  
pp. 53 ◽  
Author(s):  
Joana Ramis ◽  
Catarina Coelho ◽  
Alba Córdoba ◽  
Paulo Quadros ◽  
Marta Monjo
Keyword(s):  
Oral Care ◽  
Gastric Fluid ◽  
Gingival Tissue ◽  
Simulated Gastric Fluid ◽  
Tem Analysis ◽  
Consumer Safety ◽  
Transmission Electron ◽  
Dissolution Behaviour ◽  
Gingival Epithelium

Hydroxyapatite nanoparticles (HAP-NP) are incorporated in oral care products such as toothpastes and mouthwashes to treat dental sensitivity or to promote enamel remineralisation. Despite the good performance of HAP-NP in this application, it is important to ensure its safety for consumers. For that reason, the Scientific Committee on Consumer Safety (SCCS) evaluated the safety of HAP-NP as an oral care ingredient, but the issued opinion was not completely conclusive and the SCCS recommended that additional tests should be performed. Here, we used a commercially available human gingival epithelium (HGE) as a non-animal alternative and MTT cell viability, LDH activity, and IL-1alpha production were evaluated after 3.1% HAP-NP treatment for 10 min, 1 h, and 3 h. Moreover, the absorption of HAP-NP in the gingival tissue was assessed by transmission electron microscopy (TEM) analysis. Finally, the dissolution behaviour of HAP-NP in simulated gastric fluid was also investigated. No deleterious effect was observed for HGE tissues incubated with HAP-NP for all time-points and parameters evaluated. Moreover, a complete dissolution of 3.1% HAP-NP in simulated gastric fluid was observed after 7.5 min at 37 °C. In conclusion, our results evidence the safety of HAP-NP for oral care products with the use of an in vitro replacement alternative for human gingival epithelium and a simulated gastric fluid assay.

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