Magnetic retention and bar-clip attachment for implant-retained auricular prostheses: a comparative analysis. 2008

Andréa Alves de Sousa, and Beatriz Silva Câmara Mattos
Department of Maxillofacial Surgery, Prosthesis and Traumatology, School of Dentistry, University of São Paulo, Brazil.

Retention systems for implant-retained auricular prostheses using either bar-clip attachments with 2 or 3 clips or retention with 2 or 3 magnets were wear tested (insertion and removal cycles) to simulate clinical periods of use. Measurements were taken at intervals of 540 cycles, which represents a period of use of approximately 6 months, for up to 3,240 cycles. Assessments of retentive force were carried out before, during, and after the wear test. Statistical analysis indicated that the bar-clip systems provided higher retention than the magnetic systems. The bar-clip attachment with 2 clips showed a significant loss of retentive force after wear testing (P < .05), suggesting lower durability and shorter clinical life. The retention provided by the bar-clip attachment with 3 clips remained stronger than that provided by all other systems tested. At the end of the wear test, the magnetic systems showed very little loss of retention but were still less retentive than the bar-clip systems, suggesting higher durability under clinical simulation despite the lower retention initially provided.

UI MeSH Term Description Entries
D008280 Magnetics The study of MAGNETIC PHENOMENA. Magnetic
D011474 Prosthesis Design The plan and delineation of prostheses in general or a specific prosthesis. Design, Prosthesis,Designs, Prosthesis,Prosthesis Designs
D011475 Prosthesis Failure Malfunction of implantation shunts, valves, etc., and prosthesis loosening, migration, and breaking. Prosthesis Loosening,Prosthesis Durability,Prosthesis Migration,Prosthesis Survival,Durabilities, Prosthesis,Durability, Prosthesis,Failure, Prosthesis,Failures, Prosthesis,Loosening, Prosthesis,Loosenings, Prosthesis,Migration, Prosthesis,Migrations, Prosthesis,Prosthesis Durabilities,Prosthesis Failures,Prosthesis Loosenings,Prosthesis Migrations,Prosthesis Survivals,Survival, Prosthesis,Survivals, Prosthesis
D004431 Ear, External The outer part of the hearing system of the body. It includes the shell-like EAR AURICLE which collects sound, and the EXTERNAL EAR CANAL, the TYMPANIC MEMBRANE, and the EXTERNAL EAR CARTILAGES. External Ear,Outer Ear,Ear, Outer,Ears, External,Ears, Outer,External Ears,Outer Ears
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013314 Stress, Mechanical A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area. Mechanical Stress,Mechanical Stresses,Stresses, Mechanical
D013499 Surface Properties Characteristics or attributes of the outer boundaries of objects, including molecules. Properties, Surface,Property, Surface,Surface Property
D013718 Tensile Strength The maximum stress a material subjected to a stretching load can withstand without tearing. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p2001) Strength, Tensile,Strengths, Tensile,Tensile Strengths
D019736 Prostheses and Implants Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally. Implants, Artificial,Prostheses and Implant,Prosthesis,Prosthetic Implant,Endoprostheses,Endoprosthesis,Prostheses,Prosthetic Implants,Artificial Implant,Artificial Implants,Implant and Prostheses,Implant, Artificial,Implant, Prosthetic,Implants and Prostheses,Implants, Prosthetic
D019919 Prosthesis Implantation Surgical insertion of a prosthesis. Implantation, Prosthesis,Implantations, Prosthesis,Prosthesis Implantations

Related Publications

Andréa Alves de Sousa, and Beatriz Silva Câmara Mattos
January 2017, The Journal of craniofacial surgery,
Andréa Alves de Sousa, and Beatriz Silva Câmara Mattos
June 2022, BMC oral health,
Andréa Alves de Sousa, and Beatriz Silva Câmara Mattos
October 2016, The Journal of oral implantology,
Andréa Alves de Sousa, and Beatriz Silva Câmara Mattos
January 2023, Journal of oral biology and craniofacial research,
Andréa Alves de Sousa, and Beatriz Silva Câmara Mattos
January 2017, Journal of Indian Prosthodontic Society,
Andréa Alves de Sousa, and Beatriz Silva Câmara Mattos
May 2016, International journal of oral and maxillofacial surgery,
Andréa Alves de Sousa, and Beatriz Silva Câmara Mattos
April 2013, The Journal of oral implantology,
Andréa Alves de Sousa, and Beatriz Silva Câmara Mattos
June 2001, Compendium of continuing education in dentistry (Jamesburg, N.J. : 1995),
Andréa Alves de Sousa, and Beatriz Silva Câmara Mattos
September 1989, The Journal of prosthetic dentistry,
Andréa Alves de Sousa, and Beatriz Silva Câmara Mattos
October 1997, The Journal of prosthetic dentistry,
Copied contents to your clipboard!