Diode-pumped solid-state laser for bonding orthodontic brackets

Effect of light intensity and light-curing time

Young Oh Kim, Soo Byung Park, Woo Sung Son, Ching Chang Ko, Franklin Garcia-Godoy, Hyung Il Kim, Yong Hoon Kwon

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This study evaluated the shear bond strength (SBS) of orthodontic brackets bonded to teeth using a diode-pumped solid state (DPSS) laser of 473 nm with various light intensity and light-curing settings. For the study, a total of 150 extracted human teeth were divided into ten groups. In the control group, the brackets were bonded to the teeth using a quartz-tungsten-halogen (QTH) light with an intensity of 900 mW/cm 2. In the experimental groups, the brackets were bonded using a DPSS laser with three different light intensities and light-curing times. The same bracket type and adhesive were used in all groups throughout the study. Statistical analysis was performed to compare the SBS, and adhesive remnant index (ARI) among the groups. As results, brackets bonded using the DPSS laser with an intensity of 700 mW/cm 2 for 40 s (totally) showed a slightly higher SBS (12.2±1.8 MPa) than that of those bonded using a QTH light (control; 11.6±1.6 MPa). The SBS values linearly increased with increasing energy density (light intensity × light-curing time) of the DPSS laser (R=0.95, p<0.001). However, the SBS values among the test groups were similar regardless of the difference in light-curing conditions. A comparison of the ARI scores among the groups suggested a similar bracket failure mode.

Original languageEnglish (US)
Pages (from-to)585-589
Number of pages5
JournalLasers in Medical Science
Volume26
Issue number5
DOIs
StatePublished - Sep 1 2011

Fingerprint

Orthodontic Brackets
Solid-State Lasers
Shear Strength
Light
Adhesives
Tooth
Tungsten
Quartz
Halogens

All Science Journal Classification (ASJC) codes

  • Surgery
  • Dermatology

Cite this

Diode-pumped solid-state laser for bonding orthodontic brackets : Effect of light intensity and light-curing time. / Kim, Young Oh; Park, Soo Byung; Son, Woo Sung; Ko, Ching Chang; Garcia-Godoy, Franklin; Kim, Hyung Il; Kwon, Yong Hoon.

In: Lasers in Medical Science, Vol. 26, No. 5, 01.09.2011, p. 585-589.

Research output: Contribution to journalArticle

Kim, Young Oh ; Park, Soo Byung ; Son, Woo Sung ; Ko, Ching Chang ; Garcia-Godoy, Franklin ; Kim, Hyung Il ; Kwon, Yong Hoon. / Diode-pumped solid-state laser for bonding orthodontic brackets : Effect of light intensity and light-curing time. In: Lasers in Medical Science. 2011 ; Vol. 26, No. 5. pp. 585-589.
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