Subpicosecond laser ablation of dental enamel

Rode, Andrei; Gamaly, Eugene G.; Luther‐Davies, Barry; Taylor, Barry R.; Dawes, Judith M.; Chan, Alex; Lowe, Ralph M.; Hannaford, Peter

doi:10.1063/1.1495896

Cited by 68 publications

(51 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A recent study has shown that an USPL system that can make clean and precise cuts in the human cornea [41]. Feasibility studies for dentistry, bone drilling, and neurosurgery have also been carried out [43][44][45].…”

Section: Ultrashort Pulse Laser Ablationmentioning

confidence: 99%

The Advent of Laser Therapies in Dermatology and Urology: Underlying Mechanisms, Recent Trends and Future Directions

Lee

Jeong

Chan³

2009

Journal of the Optical Society of Korea

View full text Add to dashboard Cite

Following their applications in cardiology, ophthalmology and dentistry among others, the advent of lasers in dermatology and urology had become the success story of the past decade. Laser-assisted treatments in dermatology and urology are mainly based on the laser-induced tissue injury/coagulation and/or ablation, depending upon the desirable clinical endpoint. In this review, we discussed the underlying mechanisms of the laser induced tissue ablation. In any medical laser application, the controlled thermal injury and coagulation, and the extent of ablation, if required, are critical. The laser thermal mechanism of injury is intricately related to the selective absorption of light and its exposure duration, similarly to the laser induced ablation. The laser ablation mechanisms were categorized into four different categories (the photo-thermally induced ablation, the photo-mechanically induced ablation, the plasma induced ablation and the photoablation) and their fundamentals are herein described. The brief history of laser treatment modality in dermatology and urology are summarized.

show abstract

Section: Ultrashort Pulse Laser Ablationmentioning

confidence: 99%

The Advent of Laser Therapies in Dermatology and Urology: Underlying Mechanisms, Recent Trends and Future Directions

Lee

Jeong

Chan³

2009

Journal of the Optical Society of Korea

View full text Add to dashboard Cite

show abstract

“…First, for clinical use, the dentists to whom we have spoken seek a relatively economical, easilyoperated laser for which there is an optical fibre delivery system. Femtosecond lasers do not meet these requirements, although they ablate enamel and dentine with precision and cause minimal thermal or mechanical damage (Kruger et al 1999, Rode et al 2002, Serafetinides et al 1996, Neev et al 1996. Secondly, if the laser is to be cost-effective, some dentists would like to use the laser for other standard treatments like soft tissue surgery.…”

Section: Introductionmentioning

confidence: 99%

The role of mesoscopic modelling in understanding the response of dental enamel to mid-infrared radiation

Verde¹,

Ramos²,

Stoneham³

2007

Phys. Med. Biol.

View full text Add to dashboard Cite

Human dental enamel has a porous mesostructure at the nanometre to micrometre scales that affects its thermal and mechanical properties relevant to laser treatment. We exploit finite-element models to investigate the response of this mesostructured enamel to mid-infrared lasers (CO 2 at 10.6 µm and Er:YAG at 2.94 µm). Our models might easily be adapted to investigate ablation of other brittle composite materials. The studies clarify the role of pore water in ablation, and lead to an understanding of the different responses of enamel to CO 2 and Er:YAG lasers, even though enamel has very similar average properties at the two wavelengths. We are able to suggest effective operating parameters for dental laser ablation, which should aid the introduction of minimally-invasive laser dentistry. In particular, our results indicate that, if pulses of ≈10 µs are used, the CO 2 laser can ablate dental enamel without melting, and with minimal damage to the pulp of the tooth. Our results also suggest that pulses with 0.1-1 µs duration can induce high stress transients which may cause unwanted cracking.

show abstract

“…These ablation characteristics allow for extremely precise tissue removal with minimal damage to the surrounding tissue. Substantial research efforts over the last two decades have explored tissue ablation in the corneal stroma [3][4][5], cortical parenchyma [6], and epidermis [7], and harder tissue like nail [8] and dentin [9][10][11]. These studies led to the first clinical use of ultrafast lasers in laser assisted in situ keratomileusis (LASIK) for flap creation [3] and more recently for cataract surgery [12].…”

Section: Introductionmentioning

confidence: 99%

Kagome fiber based ultrafast laser microsurgery probe delivering micro-Joule pulse energies

Subramanian

Gabay

Ferhanoğlu

et al. 2016

Biomed. Opt. Express

View full text Add to dashboard Cite

Abstract:We present the development of a 5 mm, piezo-actuated, ultrafast laser scalpel for fast tissue microsurgery. Delivery of micro-Joules level energies to the tissue was made possible by a large, 31 μm, air-cored inhibited-coupling Kagome fiber. We overcome the fiber's low NA by using lenses made of high refractive index ZnS, which produced an optimal focusing condition with 0.23 NA objective. The optical design achieved a focused laser spot size of 4.5 μm diameter covering a 75 × 75 μm 2 scan area in a miniaturized setting. The probe could deliver the maximum available laser power, achieving an average fluence of 7.8 J/cm 2 on the tissue surface at 62% transmission efficiency. Such fluences could produce uninterrupted, 40 μm deep cuts at translational speeds of up to 5 mm/s along the tissue. We predicted that the best combination of speed and coverage exists at 8 mm/s for our conditions. The onset of nonlinear absorption in ZnS, however, limited the probe's energy delivery capabilities to 1.4 μJ for linear operation at 1.5 picosecond pulse-widths of our fiber laser. Alternatives like broadband CaF 2 crystals should mitigate such nonlinear limiting behavior. Improved opto-mechanical design and appropriate material selection should allow substantially higher fluence delivery and propel such Kagome fiber-based scalpels towards clinical translation.

show abstract

Subpicosecond laser ablation of dental enamel

Cited by 68 publications

References 19 publications

The Advent of Laser Therapies in Dermatology and Urology: Underlying Mechanisms, Recent Trends and Future Directions

The Advent of Laser Therapies in Dermatology and Urology: Underlying Mechanisms, Recent Trends and Future Directions

The role of mesoscopic modelling in understanding the response of dental enamel to mid-infrared radiation

Kagome fiber based ultrafast laser microsurgery probe delivering micro-Joule pulse energies

Contact Info

Product

Resources

About