scholarly journals Fracture strength of zirconia implant abutments on narrow diameter implants with internal and external implant abutment connections: A study on the titanium resin base concept

2018 ◽  
Vol 29 (4) ◽  
pp. 411-423 ◽  
Author(s):  
Irena Sailer ◽  
Asgeir G. Asgeirsson ◽  
Daniel S. Thoma ◽  
Vincent Fehmer ◽  
Thor Aspelund ◽  
...  
Keyword(s):  
Fracture Strength ◽  
Base Concept ◽  
Implant Abutments ◽  
Implant Abutment ◽  
Narrow Diameter Implants ◽  
Zirconia Implant

scholarly journals Internal and Marginal Fit and Fracture Strength of Narrow Diameter Dental Implant-Abutment Assembly

2020 ◽  
Vol 31 (2) ◽  
pp. 127-134
Author(s):  
George Hebert Ruschel ◽  
Ataís Bacchi ◽  
Izabela Cristina Maurício Moris ◽  
Stephanie Francoi Poole ◽  
Ricardo Faria Ribeiro ◽  
...  
Keyword(s):  
Dental Implant ◽  
Fracture Strength ◽  
Test Machine ◽  
Marginal Fit ◽  
Thermomechanical Cycling ◽  
Implant Abutments ◽  
Implant Abutment ◽  
Compressive Strength Test ◽  
Type V ◽  
Dental Implant Abutment

Abstract The aim of this study was to assess the internal and vertical marginal fit of metallic copings to abutments and the fracture strength of different narrow diameter dental implant/abutments, either submitted to thermomechanical cycling or not. Sixty-four implant/abutments (n=16) were divided into 4 groups according to diameter and abutment type: G3.5-UAC (morse taper implant Ø3.5mm + universal abutment with beveled chamfer finish); G2.9-UAS (morse taper implant Ø2.9mm + universal abutment with shoulder finish); G2.8-AA (morse taper friction implant Ø2.8mm + anatomical abutment) and G2.5-HP (one-piece implant Ø2.5mm with indexed hexagonal platform). Each group was divided into two subgroups (n=8): submitted and not submitted to thermomechanical cycling (TMC). To assess internal and vertical marginal fit of metallic copings, the assemblies were scanned using microtomography (micro-CT) (n=5). The samples were subjected to the compressive strength test on a universal test machine. Group G3.5-UAC showed the highest marginal misfit regardless of TMC (p<0.05). All other groups were similar after TMC. Group G2.8-AA showed the lowest internal misfit both with and without TMC (p<0.05). Group G2.8-AA showed the highest fracture strength, similar only to G2.5-HP without TMC and G3.5-UAC with TMC. The type of abutment affects the internal and marginal fit of metallic copings and the anatomical abutment led to the best internal and marginal coping fit. The narrow diameter dental implant/abutments differ in terms of fracture strength, the strongest assembly was that composed by implant of type V grade titanium without internal threads (friction implant).

scholarly journals Effect of Using Nano and Micro Airborne Abrasive Particles on Bond Strength of Implant Abutment to Prosthesis

2015 ◽  
Vol 26 (1) ◽  
pp. 50-55 ◽  
Author(s):  
Mansour Rismanchian ◽  
Amin Davoudi ◽  
Elham Shadmehr
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
Control Group ◽  
Abrasive Particles ◽  
Significant Difference ◽  
Implant Abutments ◽  
Implant Abutment ◽  
Roughened Surface ◽  
Bond Strengths ◽  
Spss Software

Connecting prostheses to the implant abutments has become a concern and achieving a satisfactory retention has been focused in cement-retention prostheses recently. Sandblasting is a method to make a roughened surface for providing more retention. The aim of this study was to compare effects of nano and micro airborne abrasive particles (ABAP) in roughening surface of implant abutments and further retention of cemented copings. Thirty Xive abutments and analogues (4.5 D GH1) were mounted vertically in self-cured acrylic blocks. Full metal Ni-Cr copings with a loop on the top were fabricated with appropriate marginal adaptation for each abutment. All samples were divided into 3 groups: first group (MPS) was sandblasted with 50 µm Al2O3 micro ABAP, second group (NSP) was sandblasted with 80 nm Al2O3 nano ABAP, and the third group (C) was assumed as control. The samples were cemented with provisional cement (Temp Bond) and tensile bond strength of cemented copings was evaluated by a universal testing machine after thermic cycling. The t test for independent samples was used for statistical analysis by SPSS software (version 15) at the significant level of 0.05. Final result showed significant difference among all groups (p<0.001) and MPS manifested the highest mean retention (207.88±45.61 N) with significant difference among other groups (p<0.001). The control group showed the lowest bond strength as predicted (48.95±10.44 N). Using nano or micro ABAP is an efficient way for increasing bond strengths significantly, but it seems that micro ABAP was more effective.

Are Zirconia Implant Abutments Safe and Predictable in Posterior Regions? A Systematic Review and Meta-Analysis

2016 ◽  
Vol 29 (3) ◽  
pp. 233-244 ◽  
Author(s):  
Aljomar Vechiato-Filho ◽  
Aldiéris Pesqueira ◽  
Grace De Souza ◽  
Daniela dos Santos ◽  
Eduardo Pellizzer ◽  
...  
Keyword(s):  
Systematic Review ◽  
Meta Analysis ◽  
Implant Abutments ◽  
Zirconia Implant

Fracture load of different crown systems on zirconia implant abutments

2011 ◽  
Vol 27 (3) ◽  
pp. 298-303 ◽  
Author(s):  
T. Albrecht ◽  
A. Kirsten ◽  
H.F. Kappert ◽  
H. Fischer
Keyword(s):  
Fracture Load ◽  
Implant Abutments ◽  
Zirconia Implant
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