7 / 21
Page 61
Notes:
conferenceseries
.com
Volume 2, Issue 2 (Suppl)
Dent Implants Dentures, an open access journal
ISSN: 2572-4835
Dental Medicine 2017
October 16-18, 2017
October 16-18, 2017 New York, USA
29
th
Annual World Congress on
Dental Medicine & Dentistry
Retention and deformation of a new attachment model for mini-implantretaineoverdentures
Andréa Candido dos Reis
University of São Paulo, Brazil
T
he gradual loss of retention and the need for periodic replacement of attachment system components are the most frequent
complications in implant-supported overdentures. Develop a new polymeric attachment model for overdentures and compared
your retention and deformation with a conventional O-ring attachment system. Amatrix with two mini-implants with ball abutments
was used to simulate the mandibular border during a fatigue resistance test. A total of 60 polyacetal (n=20), polytetrafluoroethylene
(PTFE) (n=20) and O-ring (n=20) attachments were captured in pairs with acrylic resin and subjected to 3.625 insertion/removal
cycles, simulating 30 months of overdenture use. The internal and external deformation of the attachments was assessed using an
optical stereomicroscope. One-way analysis of variance and Tukey's test (α=0.05) were used for statistical evaluation. The polyacetal
attachment system showed the highest retention (P<.001), followed by the O-ring and PTFE attachments. The O-ring attachments
exhibited the lowest deformation (P<.001), and the polyacetal attachments had the highest internal deformation (P<.001). The new
polyacetal attachment model that was developed resulted in the high retention of mini-implant-retained overdentures, and despite
the deformation experienced, the results suggested a period longer than 30 months before replacement would be required.
Biography
Andréa Candido dos Reis has completed his PhD at the age of 30 years at the University of São Paulo and postdoctoral studies at the Federal University of São Carlos.
Currently she is associate professor at the School of Dentistry of Ribeirão Preto, University of Sao Paulo. Develops intensive research projects in the area of development
and innovation of dental materials and she has published a total of 71 papers in national and international journals.
andreare73@yahoo.com.brAndréa Candido dos Reis, Dent Implants Dentures 2017, 2:2 (Suppl)
DOI: 10.4172/2572-4835-C1-003