There are numerous functions for laser in modern implant dentistry including surface treatment, surface coating, and implant manufacturing. As laser application may potentially improve osseointegration of dental implants, we systematically reviewed the literature for in vitro biological responses to laser-modified or processed titanium dental implants. The literature was searched in PubMed, ISI Web, and Scopus, using keywords "titanium dental implants," "laser," "biocompatibility," and their synonyms. After screening the 136 references obtained, 28 articles met the inclusion criteria. We found that Nd:YAG laser was the most commonly used lasers in the treatment or processing of titanium dental implants. Most of the experiments used cell attachment and cell proliferation to investigate bioresponses of the implants. The most commonly used cells in these assays were osteoblast-like cells. Only one study was conducted in stem cells. These in vitro studies reported higher biocompatibility in laser-modified titanium implants. It seems that laser radiation plays a vital role in cell response to dental implants; however, it is necessary to accomplish more studies using different laser types and parameters on various cells to offer a more conclusive result.
Throughout the last decades, cutanous laser surgery has gained popularity among surgeons.This kind of surgery based on the principles of selective photo-thermolysis theory. CO 2 laser selectively target watercontaining tissue, applying controlled tissue vaporization. The tissue ablation and the zone of residual thermal damage is accompanied with a deeper tissue coagulation. A piece of viable intact human skin was taken. Multiple CO 2 laser incisions were carried out with different laser parameters prior to be totally excised, then a histopathological examination were done for these skin samples. Slides were examined under light microscope to evaluate thermal enjury zones, wound edges, and cutanous blood vessles status. Histopathological examination showed that the three thermal zones were chenged wherever the laser parameter changed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.