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ePaper created 2016-02-02, 09:24:34 | version 1.38.0
34 4_2015 laser 34 laser_research I research Fig. 2_Fibre tips. Fig. 3_Cylindrical fibre tip. Fig. 4_Window hand piece. Figs. 5 & 6_The patient presented with a loss of the implant-supported metal-ceramic bridge 35–37. tionandthebiofilmwhichdevelopsontheimplant. Periodontal pockets can therefore function as a reservoirformicroorganismsfornaturalteethinthe partially edentulous. The microorganisms then set- tle at the newly-placed implant. _Periimplantitis: an inflammatory disease caused by infection (Tab. 1) – Microorganismus colonise implants very shortly after insertion or uncovering of the implant in two-stage procedures. – Implants are colonised by a microflora similar to that of natural teeth. – Periodontally diseased teeth can function as a reservoir for pathogenic microorganisms. – It is imperative that periodontally diseased teeth are treated before implantation. – Duetothepossibilityofthepathogenicmicroflora being transferred from the periodontal lesions to thenewly-placedimplant,animplantationiscon- traindicated in cases of an active periodontal dis- ease. Theperiimplantmucosaaroundtitaniumimplants hasmanythingsincommonwiththegingivaltissues ofnaturalteeth.Likethegingiva,periimplantmucosa forms a collar-like barrier, which adheres to the sur- faceofthetitaniumabutment.Periimplantmucosais a keratinised oral epithelium, whose collagen fibres start at the crestal bone und run parallelly to the im- plantsurface.Similarlytonaturalteeth,theaccumu- lation of bacterial plaque causes an infection in the periimplantmucosaandincreasestheprobingdepth. After longer contact with dental plaque, the periim- plant lesion extends apically without being encapsu- lated by the collagen fibres as in periodontitis cases. Theinflammatoryinfiltratecanextendtothealveolar bone or even the marrow spaces in periimplantitis, whileitisseparatedfromthebonebyca.1mmofnon- inflamedconnectivetissueinperiodontitis.Thismight explain the varying degree and configuration of the bonedefectsinperiimplantinflammations. _Diagnosis with dental probe and X-ray Bleeding on probing as the clinical symptom which confirms mucositis occurs in up to 90% of functioning implants. Unfortunately, the definition 08 I laser 3_2014 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6