scholarly journals Removal torque pattern of a combined cone and octalobule index implant-abutment connection at different cyclic loading: an in-vitro experimental study

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Kanyarin Benjaboonyazit ◽  
Pisaisit Chaijareenont ◽  
Pathawee Khongkhunthian
Keyword(s):  
Experimental Study ◽  
Cyclic Loading ◽  
Removal Torque ◽  
Implant Abutment

scholarly journals Comparative evaluation of the wear resistance of two different implant abutment materials after cyclic loading – An in vitro study

2020 ◽  
Vol 11 (3) ◽  
pp. 229
Author(s):  
Hariharan Ramakrishnan ◽  
Maniamuthu Ragupathi ◽  
Vallabh Mahadevan ◽  
NS Azhagarasan ◽  
S Jayakrishnakumar
Keyword(s):  
Wear Resistance ◽  
Cyclic Loading ◽  
Comparative Evaluation ◽  
In Vitro Study ◽  
Vitro Study ◽  
Implant Abutment

Development of a Microtorquemeter for the Evaluation of the Implant Abutment Interface Behavior

2018 ◽  
Vol 930 ◽  
pp. 520-525
Author(s):  
L.C. Aranha ◽  
Cristiano Stefano Mucsi ◽  
F.C. Ceoni ◽  
M.C. Alencar ◽  
Jesualdo Luiz Rossi
Keyword(s):  
Dental Implants ◽  
Dynamical Behavior ◽  
Interface Behavior ◽  
Yield Data ◽  
Removal Torque ◽  
Masticatory Function ◽  
Artificial Bones ◽  
Measurement Protocol ◽  
Implant Abutment

This paper presents the initial developments of a prototype device intended to perform measurements of the fastening torque in the range bellow 1 N.m – hereby denominated microtorque. The device is intended to yield data for analysis of in vitro torquing and detorquing experiments, for fixation and removing of abutments in dental implants and implants in artificial bones. The analysis of the data acquired allowed the authors to observe characteristic fingerprints or signal signatures associated to the type of abutment or implant under experimentation as well as of the mechanical prototype characteristics. In this paper, two different systems of abutment and implant were analyzed. The correlation between the phenomena associated to the signal fingerprints indicate that the developed measurement protocol may be extended to other implant / abutment systems. The authors suggest that the insertion and removal torque curves evaluated in this study would facilitated the correlation between the abutments stability in actual patients and the dynamical behavior under masticatory function.

Sealing capability of implant-abutment junction under cyclic loading: a toluidine blue in vitro study

2015 ◽  
Vol 13 (3) ◽  
pp. 0-0 ◽  
Author(s):  
Antonio Scarano ◽  
Vittoria Perrotti ◽  
Adriano Piattelli ◽  
Flavia Iaculli ◽  
Giovanna Iezzi
Keyword(s):  
Cyclic Loading ◽  
Toluidine Blue ◽  
In Vitro Study ◽  
Vitro Study ◽  
Implant Abutment

scholarly journals Effect of Application of a Bio-Adhesive on the Removal Torque Value and Rotational Misfit at the Implant–Abutment Junction: An In Vitro Study

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6832
Author(s):  
Mahnaz Arshad ◽  
Sina Khayat Zadeh ◽  
Mohammad Atai ◽  
Gholamreza Shirani ◽  
Georgios E. Romanos ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Control Group ◽  
Removal Torque ◽  
Cell Vitality ◽  
Implant Abutment ◽  
Measuring Machine ◽  
Adhesive Application ◽  
Abutment Screw

The aim of this study was to assess the effect of application of a recently developed bio-adhesive (Impladhesive) to abutment screw threads on the removal torque value and rotational misfit at the implant–abutment junction. This in vitro study evaluated 20 implant fixtures and 20 straight abutments. Specimens were randomly divided into two groups (n = 10) with/without adhesive application. In the adhesive group, the abutment was dipped in Impladhesive before torquing. In the control group, the abutment was torqued conventionally without adhesive application. The removal torque value was recorded after completion of the cyclic loading of 500,000 cycles with 2 Hz frequency and 75 N load. Rotational misfit was recorded using a video measuring machine. After applying the torque, the change in the bisector angle on the abutment hex was recorded for each implant. The biocompatibility of Impladhesive was evaluated using a MTT cell vitality assay. Normal distribution of data was assessed using the Kolmogorov–Smirnov test. Data were analyzed using a t-test and Pearson’s correlation coefficient The application of Impladhesive at the implant–abutment interface resulted in significantly greater mean removal torque value compared to the control group (p = 0.008). In addition, the mean rotational misfit at the implant–abutment interface was significantly lower in the use of Impladhesive compared to the control group (p = 0.001). In addition, the cell vitality was found to be greater than 80% at all evaluated time points. It can be concluded that the application of Impladhesive on the abutment screw significantly decreased rotational misfit and increased the removal torque value. Future studies are needed to evaluate the efficacy of this bio-adhesive an in vivo setting.

scholarly journals Implant-abutment screw removal torque values between customized titanium abutment, straight titanium abutment, and hybrid zirconia abutment after a million cyclic loading: an in vitro comparative study

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Disayut Klongbunjit ◽  
Weerapan Aunmeungtong ◽  
Pathawee Khongkhunthian
Keyword(s):  
Cyclic Loading ◽  
Fatigue Test ◽  
Bending Moment ◽  
In Vitro Study ◽  
Bending Moments ◽  
Static Compression ◽  
Removal Torque ◽  
Torque Values ◽  
Iso 14801

Abstract Purpose The aim of this study was to compare removal torque values after mechanical cyclic loading and bending moment after the static compression testing of customized titanium abutment compared with prefabricated and hybrid abutments. Materials and methods The study was developed according to ISO 14801:2016. Sixty implants were divided into three groups equally: Straight titanium abutment group, Customized titanium abutment group, and Hybrid zirconia abutment group. Abutments were fabricated with zirconia restoration. Forty five implants underwent for cyclic loading. The removal torque values were measured after a fatigue test was conducted at 0 cycles (control), 50,000 cycles and 1,000,000 cycles. In the second experiment, 15 implants were divided into the same groups. Then, bending moments were investigated. Results The mean initial removal torque value was significantly higher than 50,000 cycles and 1,000,000 cycles (P < 0.001). The comparison of mean removal torque value between types of abutments was not significantly different (P > 0.05), and the bending moments of all abutments were not significantly different (P > 0.05). Conclusions From the boundary of this in-vitro study, it could be concluded that customized titanium abutment and hybrid abutment were not significantly different in terms of removal torque values after the fatigue test. The bending moment between types of abutment were not significantly different. Thus, it could be concluded that abutment type does not significantly influence abutment stability or fracture strength.

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