Effects of low-level laser therapy on osteoblastic bone formation and relapse in an experimental rapid maxillary expansion model

Aim: This study aimed to compare the effect of low-level laser therapy irradiation with two different wavelengths after osteotomy site preparation on the stability of dental implants. Materials and Methods: The current study is a double-masked, randomized clinical trial. A total of seven patients of age 25 to 55 years were assigned randomly into two groups. Group I: Osteotomy site irradiated with low-level laser therapy of wavelength 940nm. GROUP II: Osteotomy site irradiated with low-level laser therapy of wavelength 660nm. Implant stability was measured after implant placement using the Penguin RFA device. Bone formation was assessed with Cone Beam Computed Tomography. Results: The current trial results showed that low-level laser therapy aided in bone formation around the implants, but there is no significant difference between the two different wavelengths. Conclusion: Implant stability increased in both groups, but no difference is observed among the groups. Hounsfield units indicating bone formation improved in both the groups with no pronounced difference between the groups. All 14 implants were stable, thus indicating that low-level laser therapy aids bone formation, but the wavelength difference had no significant impact. Keywords: Low level laser therapy, Implant Stability, Resonance frequency analysis

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Low-level laser therapy improves bone formation: stereology findings for osteoporosis in rat model

Lasers in Medical Science ◽

10.1007/s10103-015-1773-y ◽

2015 ◽

Vol 30 (5) ◽

pp. 1599-1607 ◽

Cited By ~ 17

Author(s):

Priscilla Hakime Scalize ◽

Luiz Gustavo de Sousa ◽

Simone Cecílio Hallak Regalo ◽

Marisa Semprini ◽

Dimitrius Leonardo Pitol ◽

...

Keyword(s):

Bone Formation ◽

Laser Therapy ◽

Rat Model ◽

Low Level Laser Therapy ◽

Low Level ◽

Low Level Laser ◽

Level Laser

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Effects of Low Level Laser Therapy on Bone Regeneration of Intrabony Defects

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.638.151 ◽

2015 ◽

Vol 638 ◽

pp. 151-154

Author(s):

Gabriela Bereșescu ◽

Monica Monea ◽

Bianca Porca ◽

Alina Cocan ◽

Adriana Maria Monea

Keyword(s):

Bone Formation ◽

Bone Regeneration ◽

Laser Therapy ◽

Histological Study ◽

Test Group ◽

Low Level Laser Therapy ◽

Intrabony Defects ◽

Low Level ◽

Low Level Laser ◽

Level Laser

The aim of this study is to assess the histological efficiency of low level laser therapy (LLLT) with respect to the acceleration of bone regeneration after surgical treatment of intrabony defects. Twenty patients with intrabony defects, aged between 20-45, non-smokers, good health condition present at the time of the surgery, were randomly divided in two groups, control, ten parients, and test group, ten patients. Informed consent was obtained. Each patient presented at least one periodontal defect treated by bone allograft. The test group received postsurgical treatment with low lever laser therapy (LLLT). The equipment used was OsseoPulse AM300, at an intensity of 20mW/cm2, for 20 minutes per day, for 21 consecutive days. The control group received no treatment with LLLT. The bone formation was evaluated in both groups at baseline and 6 months postoperative by the means of tissue biopsy followed by a histological analysis. The histological study of the test samples at 6 months after regeneration showed bone formation without inflammatory cells and occasional nonviable bone consistent with regenerating bone. No evidence of the grafted material was present. The histological study suggests that in 6 months there was new bone formation in the defects treated with LLLT. Clinical data indicate the possibility of more rapid wound closure and subsequent healing in zones treated with LLLT as compared with control.

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