scholarly journals Thermal Changes in the Hard Dental Tissue at Diode Laser Root Canal Treatment

2014 ◽  
Vol 41 (2) ◽  
pp. 31-35
Author(s):  
Ts. Uzunov ◽  
R. Grozdanova ◽  
E. Popova ◽  
T. Uzunov
Keyword(s):  
Laser Treatment ◽  
Diode Laser ◽  
Root Canal ◽  
In Vitro Study ◽  
Laser Coagulation ◽  
Dental Tissue ◽  
Dental Tissues ◽  
Thermal Changes ◽  
Hard Dental Tissues

Summary The laser coagulation at the apical part of the root canal after vital extirpation is a proper method of preventing complications such as pain, bleeding, remaining vital pulp. The aim of the present survey is to register the thermal changes that occur on the tooth surfaces during laser treatment of the root canal after vital extirpation. An in vitro study of 30 extracted teeth has been conducted. The teeth have been prepared with ProTaper nickel-titanium machine tools and wiped dry. During the course of laser treatment of root canals with a diode laser DenLase temperatures, changes of the surface of the hard dental tissues have been recorded with infrared camera FLIR T330. The captured thermal images have been processed with software product Flir Reporter Pro 9. In conclusion, temperature changes in hard dental tissues at diode laser treatment of the root canal are biocompatible.

scholarly journals Stereomicroscopic analysis of dental materials employed in endodontic exposed to high temperatures

2017 ◽  
Vol 19 (2) ◽  
Author(s):  
Johanna Aramburo ◽  
Angela Zapata ◽  
Sugey Zúñiga ◽  
Freddy Moreno
Keyword(s):  
High Temperatures ◽  
Dental Materials ◽  
In Vitro Study ◽  
Human Teeth ◽  
Great Resistance ◽  
Dental Tissues ◽  
Specific Rank ◽  
Hard Dental Tissues ◽  
Physical Changes

Objective: To describe the physical estereomicroscopical changes that occur in dental tissues and materials employed in a conventional endodontic treatment after application of high temperatures. Materials and methods: An in Vitro study was carried out to observe microscopic, structural and physical changes on hard dental tissues (enamel, dentine and cement) and on endodontic materials (gutta-percha Maillefer Dentsply®, endodontical cement based on oxide of zinc-eugenol Eufar®, cement based on epoxic resin Top Seal® Dentsply®, glass ionomer Fuji I® GC America®, silver amalgam GS80® SDI® and composite Point 4® Kerr®) in 124 human teeth, submitted to five temperature ranks (200ºC, 400ºC, 600ºC, 800ºC, 1000ºC). Results: The studied tissues and dental materials presented great resistance to the high temperatures without varying considerably their micro structure, such as that the physical changes (dimensional stability, cracks, pits, fractures, texture, color, carbonization and incineration) can be observed through estereomicrophotographies and can be associated to each specific rank of temperature. Conclusions: Some macrostructural changes of dental tissues and the dental materials occur of specific form in each rank of temperature, and for this reason they can be employed in the comparison before and postmortem during the process of identification of burned or charred corpse and human remains. Key words: Forensic dentistry, human identification, stereomicroscopy, dental materials, high temperatures.

scholarly journals Erosive Effect of Acidic Beverages On Dental Filling Materials Surface (In Vitro Study)

2021 ◽  
Author(s):  
Yuliya Morozova ◽  
Barbora Novotná ◽  
Pavel Holík ◽  
Iva Voborná ◽  
Jana Zapletalová
Keyword(s):  
In Vitro Study ◽  
Dental Amalgam ◽  
Vitro Study ◽  
Dental Tissues ◽  
Dental Filling ◽  
Filling Materials ◽  
Before And After ◽  
Acidic Conditions ◽  
Hard Dental Tissues

Abstract Erosive tooth wear, that is characterized like irreversible loss of hard dental tissues due to influence of external and internal acids of nonbacterial origin, is one of the most common damage of a tooth surface. Erosive factors also affect the surface of dental reconstruction materials that ideally should be resistant against them. Dental filling materials designed for this purpose must be able to withstand these effects in a comparable or even better way than enamel. In our in vitro study we investigated using the nanoindentation the hardness of currently available dental filling materials (dental composite resin, self curing and dual cures glassionomer cement, dental amalgam) before and after erosive attacks (exposure to Coca Cola for 5 min and 14 days) and consequently compare it with them of human dental enamel. Furtermore we analised the surface topography of the samples before and after acidic exposure by confocal laser scanning microscope. In our experiments the filling materials were affected by the acidic environment only minimally in comparison with hard dental tissues. We confirmed the fact that dental amalgam is still the most mechanically and chemically resistant filling material. Both GIC materials showed the worst resistance against acidic conditions and higher surface roughness even before exposure. We also declared excellent withstanding of resin composite materials against acidic conditions that was even better than natural enamel. Furthermore by CLSM was detected almost unaltered surface of these filling materials. This fact as well as adhesive properties of resin composites allow to assume that this material could be the most suitable material for dental erosion reconstruction.

scholarly journals The efficiency of root canal disinfection using a diode laser: In vitro study

2013 ◽  
Vol 24 (1) ◽  
pp. 14 ◽  
Author(s):  
Anjali Kaiwar ◽  
HL Usha ◽  
N Meena ◽  
P Ashwini ◽  
ChethanaS Murthy
Keyword(s):  
Diode Laser ◽  
Root Canal ◽  
In Vitro Study ◽  
Vitro Study ◽  
Root Canal Disinfection

Ultra morphological changes of root canal dentin induced by 940 nm diode laser: An in-vitro study

2012 ◽  
Vol 2 (3) ◽  
pp. 131 ◽  
Author(s):  
MuliyaVidya Saraswathi ◽  
NidamburVasudev Ballal ◽  
Subraya Bhat ◽  
Indhya Padinjaral
Keyword(s):  
Diode Laser ◽  
Root Canal ◽  
Morphological Changes ◽  
In Vitro Study ◽  
Vitro Study ◽  
Root Canal Dentin

scholarly journals Similar Features, Different Behaviors: A Comparative In Vitro Study of the Adipogenic Potential of Stem Cells from Human Follicle, Dental Pulp, and Periodontal Ligament

2021 ◽  
Vol 11 (8) ◽  
pp. 738
Author(s):  
Melissa D. Mercado-Rubio ◽  
Erick Pérez-Argueta ◽  
Alejandro Zepeda-Pedreguera ◽  
Fernando J. Aguilar-Ayala ◽  
Ricardo Peñaloza-Cuevas ◽  
...  
Keyword(s):  
Stem Cells ◽  
Dental Pulp ◽  
Periodontal Ligament ◽  
Adipogenic Differentiation ◽  
In Vitro Study ◽  
Mrna Levels ◽  
Dental Tissue ◽  
Periodontal Ligament Stem Cells ◽  
Differentiation Potential

Dental tissue-derived mesenchymal stem cells (DT-MSCs) are a promising resource for tissue regeneration due to their multilineage potential. Despite accumulating data regarding the biology and differentiation potential of DT-MSCs, few studies have investigated their adipogenic capacity. In this study, we have investigated the mesenchymal features of dental pulp stem cells (DPSCs), as well as the in vitro effects of different adipogenic media on these cells, and compared them to those of periodontal ligament stem cells (PLSCs) and dental follicle stem cells (DFSCs). DFSC, PLSCs, and DPSCs exhibit similar morphology and proliferation capacity, but they differ in their self-renewal ability and expression of stemness markers (e.g OCT4 and c-MYC). Interestingly, DFSCs and PLSCs exhibited more lipid accumulation than DPSCs when induced to adipogenic differentiation. In addition, the mRNA levels of adipogenic markers (PPAR, LPL, and ADIPOQ) were significantly higher in DFSCs and PLSCs than in DPSCs, which could be related to the differences in the adipogenic commitment in those cells. These findings reveal that the adipogenic capacity differ among DT-MSCs, features that might be advantageous to increasing our understanding about the developmental origins and regulation of adipogenic commitment.

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