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7) Cases of narrow bone width (knife-edge)Sufficient supporting bone is required around the <strong>implant</strong>s tomaintain them lengthwise. However, in some cases, there may not besufficient supporting bone due to a narrow buccolingual bone width.In such cases, there is a method that mechanically <strong>com</strong>presses andextends the existing bone in order to obtain enough bone to supportthe <strong>implant</strong>s. In this method, bone spreaders are effective instrumentsto efficiently <strong>com</strong>press and extend the bone.Bone spreadersBone spreaders have conical drill forms with threads. Nine types ofline-ups from φ 2.4 to φ 6.0 allow manual <strong>com</strong>pression, extension,and preparation of the hole, in steps (Fig. 6-10-1 to 6-10-3). Wherethe maxillary bone quality is porous, the use of gradually thick bonespreaders allows refinement of the porous bone around the <strong>implant</strong>, sothat primary stability is enhanced.14mm12mm10mmMaterial: Titanium8mmEach size (Total length: 33mm)Chapter 6 Surgical form29 SURGICAL MANUAL FOR PLATON IMPLANT SYSTEM
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