2024-03-29T02:27:23Zhttps://www.tdx.cat/oai/requestoai:www.tdx.cat:10803/4016802017-09-03T06:22:03Zcom_10803_1col_10803_93
nam a 5i 4500
Implants dentals
Implantes dentales
Dental implants
Prostodòncia
Prostodoncia
Prosthodontics
Retención y desgaste de tres sistemas de "attachment" para prótesis totales mandibulares sobre implantes - Estudio in Vitro
[Barcelona] :
Universitat de Barcelona,
2017
Accés lliure
http://hdl.handle.net/10803/401680
cr |||||||||||
AAMMDDs2017 sp ||||fsm||||0|| 0 spa|c
Aroso Ribeiro, Carlos Manuel,
autor
1 recurs en línia (225 pàgines)
Tesi
Doctorat
Universitat de Barcelona. Departament d'Odontostomatologia
2016
Universitat de Barcelona. Departament d'Odontostomatologia
Tesis i dissertacions electròniques
Escuin Henar, Tomás J.
(Tomás José)
supervisor acadèmic
Berástegui, Esther,
supervisor acadèmic
TDX
Mandibular overdentures retained by two implants are recognised as the first option for treating patients without teeth, as stated by the McGill University (Canada) in its consensus statement in 2002 and the British Society to the prosthodontics study, in your consensus statement of York, published in 2009. Compared to conventional full prosthesis, they provide greater satisfaction for the patient, greater chewing ability and preservation of the residual crest height.
Purpose: This in vitro study was investigated and compare the durability and retention capacity of 3 types of attachments. Our working hypothesis states that there is no significant retention loss in different systems "attachments" tested and used in implant supported overdentures over the time and no wear in the metal components that`s requiring replacement during the same period.
Materials and Methods: Three commercially available attachments were investigated:(Clix®: Preat Corporation, Santa Ynez, CA, United States; Dalbo-Plus®: Cendres+ Métaux, Biel/Bienne, Switzerland; Locator®: Zest Anchors,Inc ,Escondido, United States), 3 different abutments inclinations (0°, 10° and 20°) . The 72 attachments were placed in acrylic resin form and they were then subjected to mechanical testing (5400 cycles of insertion and removal) over the respective ball or Locator abutments immersed in artificial saliva at pH7 and 37°C, and retention values recorded at eight different times (at the beginning, one month, six months, a year, two years, three years, four years and five years).
Results: The results revealed that there were significant differences in the average values of insertion/removal force due to the angulation (F (2, 48) =343619, p<0.05) and the type of attachment (F (7, 48) = 23.220, p < 0.05). An analysis of the results showed that the retention average (insertion and removal) for attachments was always more in inclination of 0° than inclination of 20°.
Conclusions: All attachments were tested lose the maximum value of retention force. The abutment inclination influences the intrinsic strength value of each attachment and have effect on its durability over the period of time.
b
ES-BaCBU
cat
rda
ES-BaCBU
text
txt
rdacontent
informàtic
c
rdamedia
recurs en línia
cr
rdacarrier