Applications of Light Amplification by Stimulated Emission of Radiation (Lasers) for Restorative Dentistry

Najeeb, Shariq; Khurshid, Zohaib; Zafar, Muhammad Sohail; Ajlal, Syed

doi:10.1159/000443144

Cited by 53 publications

(39 citation statements)

References 97 publications

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“…Lasers are used for various restorative dentistry procedures and may potentially replace or minimize the use of air turbine hand-pieces [14][15]. The advantages of lasers for clinical dental applications include low noise, no vibration, and less heat production [15].…”

Section: Discussionmentioning

confidence: 99%

Effects of Er:YAG laser pre-treatment on dentin structure and bonding strength of primary teeth: An in vitro study

WANG

Yang

ZHANG

et al. 2020

Preprint

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Background: To investigate the effects of Er:YAG laser pre-treatment on the dentin structure and shear bond strength of primary teeth. Methods: Dentin specimens were prepared using freshly extracted intact primary molars and divided randomly into four groups based on the surface treatment applied. The control and etchant groups received no treatment and conventional acid etching treatment, respectively, while the energy and frequency groups received laser surface treatment with variable energy and frequency parameters. The morphology was observed using scanning electron microscopy. The surface-treated dentin slices were bonded to resin tablets, followed by thermocycle treatment. The shear strengths were determined with a universal testing machine and de-bonded surfaces were observed with a stereomicroscope. Results: SEM observation showed that the surface morphology of the dentin slices changed after etching as well as after Er:YAG laser pre-treatment with different energy and frequency values. The dentin tubules opened within a specific energy (50-200 mJ) and frequency (5-20 Hz) range. Beyond this range, the intertubular dentin showed cracks and structural disintegration. Shear strength tests showed no significant change after acid etching. The shear strength increased significantly (P<0.05) after Er:YAG laser pre-treatment compared with that of the control group. The shear strength increased within the same energy (50-200 mJ) and frequency (5-20 Hz) range as the tubule opening, but not significantly (P>0.05). The most common mode of interface failure was adhesive (interface) failure, followed by mixed and resin cohesive failure. Conclusions: Er:YAG laser pre-treatment may improve the bonding strength between the dentin and the resin in primary teeth.

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Section: Discussionmentioning

confidence: 99%

Effects of Er:YAG laser pre-treatment on dentin structure and bonding strength of primary teeth: An in vitro study

WANG

Yang

ZHANG

et al. 2020

Preprint

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“…The extrinsic factors that contribute to dental erosion leading to the exposure of tubules are related to acids of dietary or medicinal origin; besides, they are also associated with certain behavioral factors. The causes of DH include caries, gingival recession, tooth wear, and fractures [3].…”

Section: Introductionmentioning

confidence: 99%

Dentin Tubule Occlusion Potential of Novel Dentifrices Having Fluoride Containing Bioactive Glass and Zinc Oxide Nanoparticles

et al. 2019

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Objective: To compare the in vitro potential of dentin tubule occlusion of two novel experimental dentifrices consisting of fluoride containing bioactive glass (BG) with zinc oxide nanoparticles. Materials and Methods: Forty-eight dentin discs (n = 48) were divided into 6 groups (n = 8), based on their brushing dentifrices: Group 1 = artificial saliva (AS; control); Group 2 = fluoride dentifrice (Colgate Palmolive^©, UK); Group 3 = experimental nonactive agent dentifrice; Group 4 = experimental dentifrice with 1.5% BG; Group 5 = experimental dentifrice with 4% BG; and Group 6 = BioMinF^© dentifrice. Postbrushing, the discs were subjected to acidic challenge with 6% wt citric acid (pH = 4.0) for 1 min. Scanning electron microscope (SEM) and energy-dispersive X-ray (EDX) spectroscopy were performed pre- and post-citric acid challenges, and percentages of tubule occlusion assessed. Results: SEM micrographs of group 1 (AS) show no tubule occlusion (0%), whereas those of groups 2 and 3 show partial tubule occlusion (25 to <50% of tubules occluded). The SEM micrographs of dentifrices containing fluoride-BG (groups 4, 5, and 6) show that most of the tubules (>50 and <100%) were occluded. For all the groups (excluding group 1), pre- and post-citric acid challenge values are statistically significant (p < 0.05). EDX analysis reveals the presence of zinc in experimental dentifrices only. Conclusion: The results of novel experimental dentifrices are comparable to those of the BioMinF^©, in terms of tubule occlusion. Dentifrices containing BG could serve as an alternative in dentin sensitivity management.

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“…Laser, light amplification of by stimulated emission of radiation, plays a crucial role in biomedical and dental and orthopedic applications of photonics [48]. Laser technology has long traditional surgical applications for about 40 years, few years after the invention of CO2 laser by C. Kumar N. Patel in 1964 [49][50][51].…”

Section: Lasermentioning

confidence: 99%

The role of photonics and natural curing agents of TGF-β1 in treatment of osteoarthritis

Ahmadi

Raja

Khaghani

et al. 2018

Materials Today: Proceedings

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Osteoarthritis (OA) is a degenerative disease leading to the breakdown of the hyaline cartilage between a varieties of diarthrodial joints such as the knee joint, carpals of the wrist and etc. When the cartilage is affected by trauma or wear and tear, Osteolysis may occur; broken debris of cartilage found within the synovial fluid may be recognised as a pathogen and therefore, the body's autoimmune response will directly target the cartilage for destruction. Cytokines are proteins/peptides of glycoproteins that are secreted by cells and are involved in interaction and communication between cells. Transforming Growth Factors Beta 1 (TGF-β1) is one of well-known cytokines and had shown many effects on cellular biology including simulation or inhibition of cell proliferation, differentiation, production of extracellular matrix (ECM), remodelling, and producing both hormones and growth factors. On the other hand, Photonics recently play an important role for treatment of OA. The main aim of this review article is to investigate the effect of TGF-β1 in treatment of OA. Other important aim of this work is to explore the broad applications of optics and photonics in biomedical applications including treatment of OA. Biomedical applications of photonics have broad aspects including laser, carbon nanotubes (CNTs), quantum dots (QDs) and graphene and photodynamic therapy (PDT) which discussed in this review paper.

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Applications of Light Amplification by Stimulated Emission of Radiation (Lasers) for Restorative Dentistry

Cited by 53 publications

References 97 publications

Effects of Er:YAG laser pre-treatment on dentin structure and bonding strength of primary teeth: An in vitro study

Effects of Er:YAG laser pre-treatment on dentin structure and bonding strength of primary teeth: An in vitro study

Dentin Tubule Occlusion Potential of Novel Dentifrices Having Fluoride Containing Bioactive Glass and Zinc Oxide Nanoparticles

The role of photonics and natural curing agents of TGF-β1 in treatment of osteoarthritis

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