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ePaper created 2017-03-17, 12:41:55 | version 1.38.0
industry | Fig. 2a: Initial state: two pontics were implemented with a 970 nm 3 W CW diode laser. Fig. 2b: Recreation of the emplacement for two central posts under local anaesthesia with air/water irrigation. Fig. 2c: Preparation and installation of the temporary resin bridge. Fig. 2d: Examination of scar healing after seven days. Fig. 2e: Impression-taking for the permanent bridge. Fig. 2f: Installation of the permanent bridge. Fig. 2a Fig. 2b Fig. 2c Fig. 2d Fig. 2e Fig. 2f temperature remains under 60 °C, the treatment is al- ways in the reversible range and the tissue that is re- moved will be restored (Table 1). With its biostimula- tory action, the diode laser promotes high-quality healing of wounds in the target tissue. Figure 3a shows the peripheral subgingival prepa- ration of tooth 16. Figure 3b shows the opening of the sulcus with a 970 nm, 1.2 W diode laser with air/water irrigation and without anaesthesia. The CEREC® crown can then be bonded within one hour under su- pragingival conditions (Fig. 3c). A follow-up exam- ination on D+7 shows that the gingiva had returned to its original position (Fig. 3d). Detaching the implant and implant abutment In implant applications, it is important to note the axis of the laser fibre to avoid aiming it directly at the implant or touching it. Working with an air/water irri- gation circuit prevents the implant system from be- Temperature °C Thermal effect of laser energy on soft tissue Tab. 1: Overview on thermal effects of laser on soft tissue. 45 50 60 70 80 100 Vasodilation Disruption of cellular activity Denaturation of proteins Denaturation of collagen Carbonization and cellular necrosis Dehydration by vaporization of water > 100 Evaporation of tissues laser 1 2017 27