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PUBLISHED IN DUBAI www.dental-tribune.me November-December 2017 | No. 6, Vol. 7 Blue light laser assisted crown lengthening in restorative dentistry By Dr. Philipp Skora, Dr. Dominik Kraus, PD Dr. Jörg Meister & Prof. Matthias Frentzen, Germany Abstract 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 considerable advantages in comparison with infrared laser systems due to the known optical parameters of oral soft tissue. The procedure for a comprehensive laser-based gingivectomy before restorative treatment using this new type of laser is presented in the following case report. Due to the outstanding haemostasis with the blue light laser, both gingivectomy and adhesive filling treatment were possible in only one session. The follow-up examination showed the rapid healing of the wound with no complications and with no post- operative gingival recession. The treatment led to a very good aes- thetic result at a moderate effort. Introduction Blue light emitting diode lasers pre- sent an innovative alternative to the already established diode laser systems with wavelengths within the infrared spectrum. 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 demonstrated in many fundamental studies.3, 4 Due to these specific characteris- tics, blue light lasers are extremely suitable for corrective periodontal surgery in terms of gingivectomies. In contrast to electrosurgery, laser assisted plastic-aesthetic periodon- tal surgical procedures do not cause problems of electro magnetic inter- actions that could in turn present a contra-indication in the case of patients with symptoms of cardiac disease. In the case of multi-morbid patients who are frequently pre- scribed anti-coagulants, the danger of secondary haemorrhage can be minimised. In addition, in these cases, a bloodless surgical field can be created ad hoc, so that moisture- sensitive restorative measures (adhesive dentistry) can be carried out. In general, for multi-morbid patients it is important that re- storative procedures can be carried out in a short time and that the use of anaesthetics should be reduced to a minimum. Excision wounds should heal in a short time period. A dry environment is advanta- geous, in particular when a dental rubber dam cannot be used. In case of extended subgingival loss of dental hard tissue, e.g. as a result of carious defects, it is always neces- sary to enable a visual inspection of the preparation margin before the restoration can be placed. Furthermore, a bloodless, clean, and dry adhesive surface must be guaranteed before application of ÿPage A2 3D agility_ The One to Shape your Success Anatomical root canal preparation Exclusive Adaptive Core™ Technology Superelasticity and expansion capacity Remarkable cyclic fatigue resistance Excellent debris removal FKG Dentaire SA www.fkg.ch