title: Implant-abutment connection deformation after prosthetic procedures: an in vitro study.
abstract: This study tested the possible damage to the internal implant connection provoked by repeated disconnection and reconnection of prosthetic components. Using a light-structured scanner, connection deformation was inferred by threedimensional (3D) positional changes of a "reference" abutment before and after multiple dis- and reconnections. Measurements were taken after 1, 2, 5, 10, and 20 insertions of titanium abutments in 16 internal hexagon implants. Statistical analysis revealed that multiple dis- and reconnections could cause a deformation in the implant-abutment connection, proportional to the number of insertion procedures. However, below the threshold of 10 cycles, 3D deformation values were minimal.
authors.forename: Costanza
authors.initials: C
authors.lastname: Micarelli
authors.forename: Luigi
authors.initials: L
authors.lastname: Canullo
authors.forename: Giuliano
authors.initials: G
authors.lastname: Iannello
mesh_terms: D059605:Dental Implant-Abutment Design; D018772:Dental Marginal Adaptation; D003764:Dental Materials / Q000737:chemistry; D019232:Dental Restoration Failure; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D008422:Materials Testing; D012399:Rotation; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors; D014025:Titanium / Q000737:chemistry
chemical_list: D003764:Dental Materials; D014025:Titanium