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Periodontal tissue regeneration in beagle dogs after laser therapy
Author(s) -
Crespi Roberto,
Covani Ugo,
Margarone Joseph E.,
Andreana Sebastiano
Publication year - 1997
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/(sici)1096-9101(1997)21:4<395::aid-lsm11>3.0.co;2-a
Subject(s) - beagle , regeneration (biology) , medicine , laser therapy , dentistry , pathology , laser , biology , optics , physics , microbiology and biotechnology
Background and Objective Class III periodontal furcations still represent a challenge for the periodontist. Aim of this study was to test the effect of CO 2 laser on the treatment of class III furcation defects. Study Design/Materials and Method: Class III furcation defects 3 mm deep were surgically induced on mandibular premolars on six male Beagle dogs, for a total of 36 defects. After 6–8 weeks of plaque accumulation, the mean depth was 6.8 mm. Quadrants were randomly assigned to a) CO 2 laser therapy (laser), b) Guided Tissue Regeneration (GTR) procedure using Gore‐Tex® Membranes, (Gore Tex, Flagstaff, Arizona, USA) and c) Scaling and Root planing (Sc/Rp). CO 2 laser beam (El.En®, Florence, Italy) was applied to the root surfaces in defocused pulsed mode at 2W, 1 Hz and a duty cycle of 6%, and on periodontal soft tissues at 13W, 40 Hz, and a duty cycle of 40%. Control quadrants received either GTR procedure or Sc/Rp. Mechanical oral hygiene was provided. At 6 months the animals were sacrificed. Results The laser group showed new attachment formation averaging 1.9 mm (sd ± 0.5), whereas GTR and Sc/Rp showed 0.2 mm (sd ± 0.4) and 0.2 mm (sd ± 0.5) respectively, being the differences statistically significant between the laser group and both GTR and Sc/Rp groups ( p < 0.005). Conclusion CO 2 laser treatment of class III furcation induced formation of new periodontal ligament, cementum and bone. Lasers Surg. Med. 21:395–402, 1997. © 1997 Wiley‐Liss, Inc.