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MINERVA STOMATOLOGICA

A Journal on Dentistry and Maxillofacial Surgery


Official Journal of the Italian Society of Odontostomatology and Maxillofacial Surgery
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Minerva Stomatologica 2005 October;54(10):601-10

language: English, Italian

Management of prosthetic abutments respecting peri-implant soft tissues

Ceruti P., Lorenzetti M., Barabino E., Menicucci G.


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Periodontal and peri-implant soft tissues are very similar in many aspects (phenotype, mucosal dimensions, biological width). In peri-implant tissue, the mucosal seal is localized apically to the gap existing between the fixture and the prosthetic abutment. This is due to mechanical trauma created by screwing and unscrewing the prosthetic components, to mechanical deformation produced under functional stress and to bacterial colonization. To reduce the effects of this gap on peri-implant soft tissues stability several options are available: supracresta fixture positioning, reduction of the fixture-abutment gap, and minimizing the prosthetic steps. A clinical case was illustrated. Abutments (Gingi-hue 3I with a fixture-abutment gap less than 2 mm and a fixture abutment angle rotation of 0.4°) were screwed on the fixtures after the second stage surgery and used as impression transfer. These abutments were prepared in the laboratory and definitively screwed after the impression session. The use of definitive abutments as transfer reduces the session number and allows the peri-implant soft tissues to heal without beeing troubled by screwing and unscrewing of the prosthetic components.

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