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VOLUME 10 , ISSUE 5 ( September, 2009 ) > List of Articles

RESEARCH ARTICLE

Histologic Evaluation of the Effects of Er:YAG Laser on Bone Ablation

Metin Güngörmüş, Utkan Kamil Akyol, Cemal Gündogdu, Havva Erdem

Citation Information : Güngörmüş M, Akyol UK, Gündogdu C, Erdem H. Histologic Evaluation of the Effects of Er:YAG Laser on Bone Ablation. J Contemp Dent Pract 2009; 10 (5):69-75.

DOI: 10.5005/jcdp-10-5-69

License: CC BY-NC 3.0

Published Online: 01-09-2009

Copyright Statement:  Copyright © 2009; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

The aim of the present study was to compare the healing of bone defects created using an Er:YAG laser with those defects created using a surgical bone drill.

Methods and Materials

Fourteen Wistar rats were used for this study. Femurs were perforated with a surgical bone drill, coupled to a micromotor (bur group) to create a bone defect. Another defect was created using a 2940 nm wavelength Er:YAG laser on the same femur (Er:YAG Group). The Er:YAG laser was used with a energy density of 1.5 W in noncontact mode under a water coolant. Incisions were then sutured with polyglycolic acid sutures. Seven rats were sacrificed at day ten and the other seven at day 20 to compare the status of bone repair of each group at those post-surgical intervals. The femurs were fixed with 10% neutral buffered formalin and decalcified in 10% EDTA. The specimens were embedded in paraffin and sectioned at a 5 micron thickness and stained with hematoxylin and eosin (H&E) stain. The specimens were examined at a magnification of X100 and scored using a standardized histologic scoring system.

Results

Stages of bone healing including union, spongioza, cortex, and bone marrow development were evaluated and no significant difference between groups were found at days ten and 20 of healing. There was also no significant difference among the two groups in sum of histologic scores on day ten.

Conclusions

Bone can be ablated effectively and precisely using a Er:YAG laser without the vibration associated with steel surgical burs, but it is a slower process than when burs are used. There was no significant difference between the two groups in terms of bone repair at ten and 20 day intervals of healing.

Clinical Significance

Within the limits of this study a 2940 nm Er:YAG laser at 1.5 W can be used with confidence in cases requiring effective bone ablation.

Citation

Akyol UK, Güngörmüs M, Gündogdu C, Erdem H. Histologic Evaluation of the Effects of Er:YAG Laser on Bone Ablation. J Contemp Dent Pract [Internet]. 2009 Sept; 10(5). Available from: http://www.thejcdp.com/journal/view/histologicevaluation- of-the-effectsof-eryag-laser-on-boneablation.


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  1. Osteotomy with 80-micros CO2 laser pulses histological results. Lasers Med Sci 2003; 18:119-124.
  2. Erb:YAG and Hol:YAG laser ablation of meniscus and intervertebral discs. Lasers Surg Med. 1992; 12:375-381.
  3. Erb:YAG and Hol:YAG laser osteotomy: the effect of laser ablation on bone healing. Lasers Surg Med 1994; 15:373-381.
  4. Infrared laser bone ablation. Lasers Surg Med 1988; 8:381-391.
  5. Use of the Er:YAG laser for improved plating in maxillofacial surgery: comparison of bone healing in laser and drill osteotomies. Lasers Surg Med. 1996; 19:40-45.
  6. Comparative histological analysis of bone healing of standardized bone defects performed with the Er:YAG laser and steel burs. Lasers Med Sci 2008; 23:253-260.
  7. Er:YAG laser osteotomy for intraoral bone grafting procedures: a case series with a fiberoptic delivery system. J Periodontol 2007; 78:2389-2394.
  8. Harvesting of intraoral autogenous block grafts from the chin and ramus region: preliminary results with a variable square pulse Er:YAG laser. Lasers Surg Med 2008; 40:312-318.
  9. Effects of the Er:YAG laser irradiation on titanium implant materials and contaminated implant abutment surfaces. J Clin Laser Med Surg 2003; 21:7-17.
  10. Er:YAG laser osteotomy for removal of impacted teeth: clinical comparison of two techniques. Lasers Surg Med 2007; 39:583-588.
  11. Biology of cancellous bone grafts. Orthop Clin North Am 1987; 18:179-185.
  12. Mid-infrared erbium. YAG laser ablation of bone: the effect of laser osteotomy on bone healing. Lasers Surg Med 1989; 9:362-374.
  13. Histological and TEM examination of early stages of bone healing after Er:YAG laser irradiation. Photomed Laser Surg 2004; 22:342-350.
  14. Vertical ramus osteotomy with Er:YAG laser: a feasibility study. Int J Oral Maxillofac Surg 2007; 36:1193-1197.
  15. Use of the Er:YAG laser for improved plating in maxillofacial surgery: comparison of bone healing in laser and drill osteotomies. Lasers Surg Med 1996; 19:40-45.
  16. Comparative study of Er:YAG laser and rotating bur for bone ablation. International Congress Series 2003; 1248:389-391.
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