Analysis of the pullout testing of straight and angled abutments in narrow diameter implants
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Materials Science Forum
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Resumo
Despite the success of osseointegrated implants, some biomechanical problems such as
loosening or fracture of the abutment, crown fixation screw loosening and prosthetic instability, are
common problems reported in the literature. Thus, the objective of the present study was to analyze
the pullout resistance of straight and angled abutments in narrow diameter implants installed by
means of friction. The specimen was composed of an implant of 3.3 mm x 11 mm fixed 2 mm above
of a resin block. The abutments were fixed by friction receiving 3, 5 and 7 strikes of 0.05 J along the
implant axis, and were positioned with 0˚, 10˚ and 20˚ of angulation. The abutments were subjected
to pullout load, totalizing 10 repetitions for each test, i.e., the abutment was reinserted up to 10 times
in the same implant. The results showed higher values of pullout load for the abutments with 7 strikes,
and no statistical difference with 5 strikes suggesting better mechanical stability.
Como referenciar
MICELLI, ANA L.P.; NIGRO, FREDERICO; MUCSI, CRISTIANO S.; ALENCAR, MAICON C. de; ARANHA, LUIS C.; ROSSI, JESUALDO L. Analysis of the pullout testing of straight and angled abutments in narrow diameter implants. Materials Science Forum, v. 1012, p. 461-465, 2020. DOI: 10.4028/www.scientific.net/MSF.1012.461. Disponível em: http://repositorio.ipen.br/handle/123456789/31828. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.