Article

Histomorphometric study of the healing of human oral mucosa after gingivoplasty and low-level laser therapy

  1. Carla A. Damante MSD1,*,
  2. Sebastião L.A. Greghi PhD1,
  3. Adriana C.P. Sant'Ana PhD1,
  4. Euloir Passanezi PhD1,
  5. Rumio Taga PhD2

Article first published online: 20 DEC 2004

DOI: 10.1002/lsm.20111

Issue

Lasers in Surgery and Medicine

Lasers in Surgery and Medicine

Volume 35, Issue 5, pages 377–384, December 2004

Additional Information

How to Cite

Damante, C. A., Greghi, S. L.A., Sant'Ana, A. C.P., Passanezi, E. and Taga, R. (2004), Histomorphometric study of the healing of human oral mucosa after gingivoplasty and low-level laser therapy. Lasers Surg. Med., 35: 377–384. doi: 10.1002/lsm.20111

Author Information

  1. 1

    Bauru School of Dentistry—University of São Paulo—Department of Periodontology, Bauru, São Paulo, Brazil

  2. 2

    Bauru School of Dentistry—University of São Paulo—Department of Biological Sciences, Bauru, São Paulo, Brazil

*Rua Antonio Xavier de Mendonça 7-25, 17012-091 Bauru—SP—Brazil.

Publication History

  1. Issue published online: 20 DEC 2004
  2. Article first published online: 20 DEC 2004
  3. Manuscript Accepted: 14 SEP 2004

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Keywords:

  • low-level laser therapy;
  • oral surgery

Abstract

Background and objectives

The aim of the present study was to analyze the effects of diode laser irradiation on the healing of human oral mucosa.

Materials and Methods

After gingivoplasty, the right hemi-arch (test group) of 16 patients was irradiated with a diode laser. The left side (control group) was not irradiated. Incisional biopsies were performed on both sides at 7, 14, 21, and 60 days after surgery and morphometrically analyzed by light microscopy.

Results

Epithelium width ranged from 260.6 to 393.5 μm. Volume densities of basal (20.2%), prickle cell (55.6%), and cornified (24.2%) layers remained stable. The peak number of neutrophils were 6 cells/mm2 and the mononuclear cells were 44 cells/mm2. Collagen fibers (80%) and fibroblasts (14%) occupied the main volume of connective tissue. The one-way ANOVA and the paired Student's t-test were used for statistical analysis (P < 0.05).

Conclusion

Low-level laser therapy did not accelerate the healing of oral mucosa after gingivoplasty. Lasers Surg. Med. 35:377–384, 2004. © 2004 Wiley-Liss, Inc.

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