Thermal stress distribution in laser irradiated hard dental tissue: Implications for dental applications

M. Motamedi, S. Rastegar, B. Anyari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations


This paper examines the thermomechanical effects of Er :YAG irradiation of a tooth from a theoretical standpoint. Neglecting heat conduction and light scattering in tissue, analytical solutions for heat and stress distribution were used to estimate the radial and circumferential stresses developed as a result of temperature rise on the surface of a tooth. Radial stresses were always found to be compressive. Circumferential stresses, however, were compressive within a range inside the beam radius, and tensile outside the beam radius. Locations of the maximum tensile stress and maximum displacement were found to be outside and inside the beam radius (l/e2), respectively. Maximum stresses and displacements decreased monotonically with increasing beam radius. Our results also revealed that ablation and thermal stresses beyond enamel strength could be reached within a single laser pulse.

Original languageEnglish (US)
Title of host publicationLaser-Tissue Interaction III
EditorsSteven L. Jacques
Number of pages7
ISBN (Electronic)9780819407924
StatePublished - Aug 7 1992
EventLaser-Tissue Interaction III 1992 - Los Angeles, United States
Duration: Jan 19 1992Jan 24 1992

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherLaser-Tissue Interaction III 1992
Country/TerritoryUnited States
CityLos Angeles

ASJC Scopus subject areas

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


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