Abstract
BackgroundOur aim was to determine whether low level laser therapy (LLLT) can decrease the time between extraction/socket graft and implant placement, by evaluating histological changes in sockets grafted with a particulate allograft material and treated with LLLT.MethodsThirty patients had a socket grafted with a particulate allograft material (MinerOss) covered with a resorbable collagen wound dressing. The patients were then randomly divided into two equal groups (n = 15): test group receiving postoperative LLLT treatment, and control group without postoperative laser treatment. The assessment of bone formation was carried out in both groups at well-determined time intervals after surgery by histostomorphometric analysis.ResultsThe histological results of the site treated with LLLT for 21 days, harvested at 60 days after grafting showed abundant new bone formation without any sign of inflammation. The same results were obtained in the control group not before 120 days post-surgery.ConclusionsIt can be concluded that LLLT photobiomodulation can reduce the healing time after grafting the extraction socket. Histological evidence suggests that new bone formation in the sockets appeared within 60 days after LLLT treatment compared to a minimum of 120 days in the control group.
Highlights
Our aim was to determine whether low level laser therapy (LLLT) can decrease the time between extraction/socket graft and implant placement, by evaluating histological changes in sockets grafted with a particulate allograft material and treated with LLLT
The aim of this study was to determine whether LLLT can decrease the time between extraction/socket graft and implant placement, by evaluating histological changes in sockets grafted with a particulate allograft material and treated with LLLT
Not receiving LLLT biopsies were harvested after 120 days, and a complete turnover of the grafted material into woven bone was noticed on radiographic evaluation (Fig. 2)
Summary
Our aim was to determine whether low level laser therapy (LLLT) can decrease the time between extraction/socket graft and implant placement, by evaluating histological changes in sockets grafted with a particulate allograft material and treated with LLLT. LLLT has been shown to enhance cell proliferation in vitro in several types of cells: fibroblasts [1, 2], keratinocytes [3], endothelial cells [4], osteoblasts [5], lymphocytes [6, 7]. Stein and collaborators showed that LLLT (He-Ne laser irradiation) promotes proliferation and maturation of humans osteoblasts in vitro [5]. The successful placement and integration of the dental implants in the previously grafted extraction sockets require adequate time for the healing and sufficient regeneration of the bone. A number of different studies showed that the healing time of an extraction
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