Rapid ablation of dental hard tissue using promoter-assisted pulsed Nd: YAG laser

Christopher J. Frederickson; Quiang Lu; Donald J. Hayes; David B. Wallace; Michael E. Grove; Brent A. Bell; Massoud Motamedi; Sohi Rastegar; C. G. Wright; Charles J. Arcoria

doi:10.1117/12.273582

Rapid ablation of dental hard tissue using promoter-assisted pulsed Nd: YAG laser

Christopher J. Frederickson, Quiang Lu, Donald J. Hayes, David B. Wallace, Michael E. Grove, Brent A. Bell, Massoud Motamedi, Sohi Rastegar, C. G. Wright, Charles J. Arcoria

Otolaryngology - Head And Neck Surgery

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Scopus citations

Abstract

Nd:YAG lasers have been used previously for selective removal of various material from teeth. To permit ablation of healthy enamel with the Nd:YAG laser, we have adopted a strategy in which micro-drops of photoabsorptive "promoters" are placed on the enamel to enhance absorption of individual laser pulses. Ink-jet technology dispenses the micro-drops with micron- and millisecond-scale precision. Various promoters using drug and cosmetic dyes, indocyanine green, or carbon-black pigments have been studied. Typical ablation parameters are 1.064 micrometers ; 20-180 mJ per pulse; 100 microsecond(s) ; 10-30 pulses/sec; 0.2-2.0 nl drops. Recent results from the program include: (1) For a variety of promoters, a monotonic relationship obtains between absorption coefficient at 1.064 micrometers and the efficiency of ablation of enamel. (2) With different promoter volumes, the efficiency of ablation rises, plateaus, then falls with increasing volume. (3) At drilling rates of 30 pulses/sec, ablation efficiency approaches rates of 0.1 mm ³/sec. LM and SEM observations show a glassy "pebbled" crater surface indicative of hydroxyapatite that has cooled, condensed, and solidified on the crater walls. Together these results favor the view that a micro-drop promoter-assisted Nd:YAG drill can five clinically useful ablations hard dental tissue.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Pages	43-52
Number of pages	10
Volume	2973
DOIs	https://doi.org/10.1117/12.273582
State	Published - 1997
Event	Lasers in Dentistry III - San Jose, CA, United States Duration: Feb 8 1997 → Feb 8 1997

Other

Other	Lasers in Dentistry III
Country/Territory	United States
City	San Jose, CA
Period	2/8/97 → 2/8/97

Keywords

Dentin ablation
Dye-assisted
Enamel ablation
Nd:YAG laser
Promoter-assisted

ASJC Scopus subject areas

Applied Mathematics
Computer Science Applications
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1117/12.273582

Cite this

Frederickson, CJ, Lu, Q, Hayes, DJ, Wallace, DB, Grove, ME, Bell, BA, Motamedi, M, Rastegar, S, Wright, CG & Arcoria, CJ 1997, Rapid ablation of dental hard tissue using promoter-assisted pulsed Nd: YAG laser. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 2973, pp. 43-52, Lasers in Dentistry III, San Jose, CA, United States, 2/8/97. https://doi.org/10.1117/12.273582

@inproceedings{243f9188b62c4b9fab513d3b29cb6f2e,

title = "Rapid ablation of dental hard tissue using promoter-assisted pulsed Nd: YAG laser",

abstract = "Nd:YAG lasers have been used previously for selective removal of various material from teeth. To permit ablation of healthy enamel with the Nd:YAG laser, we have adopted a strategy in which micro-drops of photoabsorptive {"}promoters{"} are placed on the enamel to enhance absorption of individual laser pulses. Ink-jet technology dispenses the micro-drops with micron- and millisecond-scale precision. Various promoters using drug and cosmetic dyes, indocyanine green, or carbon-black pigments have been studied. Typical ablation parameters are 1.064 micrometers ; 20-180 mJ per pulse; 100 microsecond(s) ; 10-30 pulses/sec; 0.2-2.0 nl drops. Recent results from the program include: (1) For a variety of promoters, a monotonic relationship obtains between absorption coefficient at 1.064 micrometers and the efficiency of ablation of enamel. (2) With different promoter volumes, the efficiency of ablation rises, plateaus, then falls with increasing volume. (3) At drilling rates of 30 pulses/sec, ablation efficiency approaches rates of 0.1 mm 3/sec. LM and SEM observations show a glassy {"}pebbled{"} crater surface indicative of hydroxyapatite that has cooled, condensed, and solidified on the crater walls. Together these results favor the view that a micro-drop promoter-assisted Nd:YAG drill can five clinically useful ablations hard dental tissue.",

keywords = "Dentin ablation, Dye-assisted, Enamel ablation, Nd:YAG laser, Promoter-assisted",

author = "Frederickson, {Christopher J.} and Quiang Lu and Hayes, {Donald J.} and Wallace, {David B.} and Grove, {Michael E.} and Bell, {Brent A.} and Massoud Motamedi and Sohi Rastegar and Wright, {C. G.} and Arcoria, {Charles J.}",

year = "1997",

doi = "10.1117/12.273582",

language = "English (US)",

volume = "2973",

pages = "43--52",

booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

note = "Lasers in Dentistry III ; Conference date: 08-02-1997 Through 08-02-1997",

}

TY - GEN

T1 - Rapid ablation of dental hard tissue using promoter-assisted pulsed Nd

T2 - Lasers in Dentistry III

AU - Frederickson, Christopher J.

AU - Lu, Quiang

AU - Hayes, Donald J.

AU - Wallace, David B.

AU - Grove, Michael E.

AU - Bell, Brent A.

AU - Motamedi, Massoud

AU - Rastegar, Sohi

AU - Wright, C. G.

AU - Arcoria, Charles J.

PY - 1997

Y1 - 1997

N2 - Nd:YAG lasers have been used previously for selective removal of various material from teeth. To permit ablation of healthy enamel with the Nd:YAG laser, we have adopted a strategy in which micro-drops of photoabsorptive "promoters" are placed on the enamel to enhance absorption of individual laser pulses. Ink-jet technology dispenses the micro-drops with micron- and millisecond-scale precision. Various promoters using drug and cosmetic dyes, indocyanine green, or carbon-black pigments have been studied. Typical ablation parameters are 1.064 micrometers ; 20-180 mJ per pulse; 100 microsecond(s) ; 10-30 pulses/sec; 0.2-2.0 nl drops. Recent results from the program include: (1) For a variety of promoters, a monotonic relationship obtains between absorption coefficient at 1.064 micrometers and the efficiency of ablation of enamel. (2) With different promoter volumes, the efficiency of ablation rises, plateaus, then falls with increasing volume. (3) At drilling rates of 30 pulses/sec, ablation efficiency approaches rates of 0.1 mm 3/sec. LM and SEM observations show a glassy "pebbled" crater surface indicative of hydroxyapatite that has cooled, condensed, and solidified on the crater walls. Together these results favor the view that a micro-drop promoter-assisted Nd:YAG drill can five clinically useful ablations hard dental tissue.

AB - Nd:YAG lasers have been used previously for selective removal of various material from teeth. To permit ablation of healthy enamel with the Nd:YAG laser, we have adopted a strategy in which micro-drops of photoabsorptive "promoters" are placed on the enamel to enhance absorption of individual laser pulses. Ink-jet technology dispenses the micro-drops with micron- and millisecond-scale precision. Various promoters using drug and cosmetic dyes, indocyanine green, or carbon-black pigments have been studied. Typical ablation parameters are 1.064 micrometers ; 20-180 mJ per pulse; 100 microsecond(s) ; 10-30 pulses/sec; 0.2-2.0 nl drops. Recent results from the program include: (1) For a variety of promoters, a monotonic relationship obtains between absorption coefficient at 1.064 micrometers and the efficiency of ablation of enamel. (2) With different promoter volumes, the efficiency of ablation rises, plateaus, then falls with increasing volume. (3) At drilling rates of 30 pulses/sec, ablation efficiency approaches rates of 0.1 mm 3/sec. LM and SEM observations show a glassy "pebbled" crater surface indicative of hydroxyapatite that has cooled, condensed, and solidified on the crater walls. Together these results favor the view that a micro-drop promoter-assisted Nd:YAG drill can five clinically useful ablations hard dental tissue.

KW - Dentin ablation

KW - Dye-assisted

KW - Enamel ablation

KW - Nd:YAG laser

KW - Promoter-assisted

UR - http://www.scopus.com/inward/record.url?scp=0005484374&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0005484374&partnerID=8YFLogxK

U2 - 10.1117/12.273582

DO - 10.1117/12.273582

M3 - Conference contribution

AN - SCOPUS:0005484374

VL - 2973

SP - 43

EP - 52

BT - Proceedings of SPIE - The International Society for Optical Engineering

Y2 - 8 February 1997 through 8 February 1997

ER -

Rapid ablation of dental hard tissue using promoter-assisted pulsed Nd: YAG laser

Abstract

Other

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this