Osseointegration of endosseous ceramic implants after postoperative low‐power laser stimulation: an in vivo comparative study

Abstract

Stimulation with low-power laser (LPL) can enhance bone repair as reported in experimental studies on bone defects and fracture healing. Little data exist concerning the use of LPL postoperative stimulation to improve osseointegration of endosseous implants in orthopaedic and dental surgery. An in vivo model was used for the present study to evaluate whether Ga-Al-As (780 nm) LPL stimulation can improve biomaterial osseointegration. After drilling holes, cylindrical implants of hydroxyapatite (HA) were placed into both distal femurs of 12 rabbits. From postoperative day 1 and for 5 consecutive days, the left femurs of all rabbits were submitted to LPL treatment (LPL group) with the following parameters: 300 J/cm2, 1 W, 300 Hz, pulsating emission, 10 min. The right femurs were sham-treated (control group). Three and 6 weeks after implantation, histomorphometric and microhardness measurements were taken. A higher affinity index was observed at the HA-bone interface in the LPL group at 3 (P<0.0005) and 6 weeks (P<0.001); a significant difference in bone microhardness was seen in the LPL group vs. the control group (P<0.01). These results suggest that LPL postoperative treatment enhances the bone-implant interface.

Stability of dental implants after irradiation with an 830-nm low-level laser: a double-blind randomized clinical study

“…Kadra et al (2004) agree that no standard protocol for laser irradiation has yet been defined with reference to implant dentistry. It has been observed that there is a very large variation in the choice of energy density and wavelengths for the use of low-level laser irradiation in bone tissue [14].…”

“…Despite the fact that lasers have demonstrated efficiency on osseous tissue healing [4,[10][11][12][13][14], in implantology, factors like high initial stability, implant geometry, and good bone quality, are more relevant for the quality of the implantbone interface than any additional therapeutic effort.…”

“…Little data exist concerning these effects on the osseointegration process of implants [14][15][16][17].…”

Aplicaciones del láser de baja potencia en Odontología

“…Aplicaciones del láser de baja pótencia en Odontología RCOE, 2004, Vol 9, Nº5, 517-524 17 en el que se irradiaron las zonas periimplantarias en el fémur de conejos, observando mayor viabilidad ósea en la interfase entre el hueso y los implantes. Sin embargo, es necesario la realización de otros estudios clínicos que apoyen estas conclusiones.…”

Influence of low-level laser on dental implant sites: A literature review

“…Scientiic evidence demonstrates increased mechanical strength of the bone-implant connection, [4][5][6][7][8][9] enhanced metabolic activity of bone cells 10 and expansion of angiogenesis activity at sites treated with LLLT. 11 he biostimulation repair triggered by laser radiation is subject to a combination of parameters that comprise application protocols.…”