Periodontal tissue regeneration in beagle dogs after laser therapy

✍ Scribed by Crespi, Roberto; Covani, Ugo; Margarone, Joseph E.; Andreana, Sebastiano

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 233 KB
• Volume: 21
• Category: Article
• ISSN: 0196-8092
• DOI: 10.1002/(sici)1096-9101(1997)21:4<395::aid-lsm11>3.0.co;2-a

✦ Synopsis

Background and objective:

Class iii periodontal furcations still represent a challenge for the periodontist. aim of this study was to test the effect of co2 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) co2 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). co2 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:

Co2 laser treatment of class iii furcation induced formation of new periodontal ligament, cementum and bone.