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ePaper created 2017-06-21, 10:00:36 | version 1.38.0
| case report laser-assisted treatment Blue light laser-assisted crown lengthening in restorative dentistry Authors: Dr Philipp Skora, Dr Dominik Kraus, PD Dr Jörg Meister & Prof. Matthias Frentzen, Germany Abstract Introduction Basic investigations of the laser-tissue interaction of a new type of laser device with a wavelength of 445 nm—the blue light spectrum—promise consider- able advantages in comparison with infrared laser systems due to the known optical parameters of oral soft tissue. The procedure for a comprehensive la- ser-based gingivectomy before restorative treatment using this new type of laser is presented in the follow- ing case report. Due to the outstanding haemostasis with the blue light laser, both gingivectomy and ad- hesive filling treatment were possible in only one ses- sion. The follow-up examination showed the rapid healing of the wound with no complications and with no postoperative gingival recession. The treatment led to a very good aesthetic result at a moderate effort. Blue light-emitting diode lasers present an innova- tive alternative to the already established diode laser systems with wavelengths within the infrared spec- trum. Due to the strong absorption of blue laser light in oral soft tissue1, the cutting capacity is improved when comparable laser parameters are used. Blue light lasers have very powerful coagulation effects that enable blood-free work.2 In addition, the high antimicrobial effect of blue light has been demon- strated in many fundamental studies.3, 4 Due to these specific characteristics, blue light lasers are extremely suitable for corrective periodontal surgery in terms of gingivectomies. In contrast to electrosurgery, laser- assisted plastic-aesthetic periodontal surgical proce- dures do not cause problems of electro-magnetic Figs. 1a–e: X-rays of the upper jaw.—Subgingival carious lesions at 11 and 21. Fig. 1a Fig. 1d Fig. 1b Fig. 1c Fig. 1e 26 roots 2 2017