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ePaper created 2015-09-15, 12:06:46 | version 1.38.0
I case report Figs. 1a & b_Number of sockets treated by SP or RP by region. _Introduction An adequate amount of bone in both the hori- zontal and vertical directions is required for suc- cessful oral rehabilitation with dental implants. Preservation of the alveolar bone structure after tooth extraction is a critical factor regarding the outcomeofthisprocedure.Bundlebone,whichde- pends on the periodontal tissue, is inevitably lost after tooth extraction.1, 2 As the buccal wall is often very thin and mainly composed of bundle bone, toothextractionscommonlyresultinareductionof the alveolar process in the vertical and horizontal directions.1, 3 Such resorption is typically observed in the buccal walls of the upper jaw.1, 4 A 50 % reduction in the width of the buccal wall was observed after the extraction of molars and premolarsin46patientsat12monthsafterextrac- tion,withtheatrophybeingmostseverewithinthe first three months after extraction.5 By augmenting the socket with artificial bone, its shape can be conserved and predictable regen- eration of bone can be achieved.1, 6 Notably, in the anterior upper jaw, effective maintenance of the ridge is possible. The larger the osseous defect, the more complicated is the augmentation procedure for implant placement. Therefore, it is obvious that preserving the alveolar ridge after tooth extraction is of great importance. This procedure is termed socketpreservation(SP)ifthebonywallsaresound and ridge preservation (RP) in case of defect or ab- senceofthebonywallsofthesocket.Furthertreat- ment options for the extraction site include socket seal surgery and ridge augmentation. The aim of such surgeries is to preserve the osseous dimen- sions and to limit resorption. This technique is ap- plied more often in the upper jaw than in the lower jaw. The primary importance of SP in the maxillary molar region is to optimise the hard tissue facing Simplifying implantation in socket and ridge preservation Authors_Martin Keweloh MD, DDS, MSc, Julian Riedasch DDS & Konrad Joisten MD 28 I implants3_2015 Fig. 1a Fig. 1b