In-vitro fatigue and fracture performance of three different ferrulized implant connections used in fixed prosthesis.
J Dent Sci
; 16(1): 397-403, 2021 Jan.
Article
em En
| MEDLINE
| ID: mdl-33384826
ABSTRACT
BACKGROUND/PURPOSE:
The aim of the present in vitro study was to evaluate fatigue resistance of dental fixtures in three different types of fixture/abutment finishing line. MATERIALS ANDMETHODS:
Transmucosal dental implants, with or without ferrulized neck, underwent fatigue tests (static and dynamic load) using the following standard protocol UNI EN ISO 148012016. Two types of loading devices (screw- or cement-retained restoration) were also tested, and fatigue cycle tests were run to failure. Data of static and dynamic load tests were analyzed by proper statistical methods.RESULTS:
Following standard protocol for fatigue testing, the ILC type (Implant Level with ferrulized neck and cement-retained crown) showed a non-significant but higher Ultimate Failure Load (UFLâ¯=â¯445.7â¯N) compared to AL type (Abutment Level without ferrule effect, 421.6â¯N) and ILS type (Implant Level with ferrulized neck and Screw-retained crown, 362.8â¯N). No fracture of the titanium-base was registered in the tested specimens during the static loadings. Permanent deformations of the materials were observed.CONCLUSION:
The number of cycles to either fracture or deformation (higher than 4â¯mm) occurring during fatigue tests showed that the stress rupture curve of the materials in group ILS appeared to be significantly different from those of the ILC and AL groups (p-valuesâ¯<â¯0.01) much higher life of one-half order of magnitude.
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MEDLINE
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article