Effect of Drilling Techniques on Microcracks and Pull-Out Strength of Cortical Screw Fixed in Human Tibia: An In-Vitro Study

2020 ◽  
Vol 49 (1) ◽  
pp. 382-393
Author(s):  
Ravinder Pal Singh ◽  
Vishal Gupta ◽  
Pulak Mohan Pandey ◽  
Asit Ranjan Mridha
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Human Tibia ◽  
Pull Out ◽  
Cortical Screw ◽  
Pull Out Strength

Horizontal Pull-Out Strength of Orthodontic Infrazygomatic Mini-Implant: An In Vitro Study

2011 ◽  
Vol 20 (2) ◽  
pp. 139-145 ◽  
Author(s):  
Chun-Ming Chen ◽  
Ju-Hui Wu ◽  
Pei-Chen Lu ◽  
Huang-Chi Wang ◽  
Huey-Er Lee ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Pull Out ◽  
Pull Out Strength

scholarly journals The Stability of Temporary Restorations Fabricated on a Healing Cap for Immediate Loading: An In Vitro Study

2018 ◽  
Vol 8 (11) ◽  
pp. 2261
Author(s):  
Sangho Jun ◽  
Hyonseok Jang ◽  
Enji Cheon ◽  
MinJu Kim ◽  
Sungwon Ju ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Load Distribution ◽  
In Vitro Study ◽  
Bite Force ◽  
Immediate Loading ◽  
Pull Out ◽  
The Stability ◽  
Implant Treatment ◽  
Pull Out Strength

The aim of this study was to analyze the load distribution of interim restorations using healing cap during immediate loading implant treatment in vitro. A total of 29 models with interim restorations which were fabricated with healing cap were selected. The pull-out strength was measured with a used healing cap and new healing cap. The compressive strength and sinking distance were also measured. The pull-out strength of interim restoration showed lower value (max. 29.8 N) compared to the natural bite force. The sinking amounts were larger than normal tooth sinking. The sinking amounts of interim restorations fabricated on a healing cap were roughly 3 times (0.3–0.5 mm under 450 N) those of normal teeth. The interim restoration on plastic healing cap would be useful for immediate loading implant treatment.

scholarly journals Mechanical Pull-Out Test of a New Hybrid Fixture-Abutment Connection: An In Vitro Study

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1555
Author(s):  
Gianmaria D’addazio ◽  
Bruna Sinjari ◽  
Lorenzo Arcuri ◽  
Beatrice Femminella ◽  
Giovanna Murmura ◽  
...  
Keyword(s):  
Surface Modification ◽  
In Vitro Study ◽  
Mean Value ◽  
Vitro Study ◽  
Test Machine ◽  
Pull Out ◽  
Significant Difference ◽  
Implant Abutment ◽  
New Type

Implant abutment connection was described among the main causes of peri-implant bone resorption. The aim of this in vitro study was to test the coupling capacity, the surface modification of a new hybrid connection and the influence of repeated connection activations caused during the main clinical and laboratory phases. A total of 40 implant-abutment screw retained systems with 10°-conical and internal hexagon connection were tested. The connection was screwed, fixed to the universal test machine, removed the screw and a pull-out test was performed. Test was repeated five times in succession. Also Scanning Electron Microscopy (SEM) was used to detect microscopically surface modification. Analysis of variance and Tukey tests were used for the statistical analysis. Pull-out test reveals a mean value of 131.35 ± 16.52 Newton Centimeter (N·cm). For each single activation, results from first to fifth were: 113.9 ± 13.02, 126.1 ± 12.81, 138.11 ± 15.15, 138.8 ± 11.90 and 140 ± 12.99 N·cm. A statistically significant difference between the measurements and an increase in the removal force was shown. The collected data supports the use of this new type of connection, resulting in a very strong interface between implant and abutment. Also, repeated activation of connection can promote a better coupling of the implant-abutment interface.

scholarly journals Miniscrew-assisted rapid palatal expansion (MARPE): how to achieve greater stability. In vitro study

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Flávio de Mendonça COPELLO ◽  
Daniel Paludo BRUNETTO ◽  
Carlos Nelson ELIAS ◽  
Matheus Melo PITHON ◽  
Raildo Silva COQUEIRO ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Primary Stability ◽  
Insertion Torque ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Mini Implants ◽  
Pull Out ◽  
Strength Tests ◽  
Pull Out Strength

ABSTRACT Objective: Assess the influence of mono- and bicortical anchorage and diameter of mini-implants (MIs) on the primary stability of these devices. Methods: 60 self-drilling MIs were distributed in six groups according to diameter (1.5mm, 1.8mm or 2.0mm) and type of anchorage (monocortical and bicortical) in bovine rib. The primary stability was evaluated by insertion torque, micromobility and pull-out strength tests. ANOVA and/or Tukey analysis were used to conduct intergroup comparisons (p< 0.05). Non-parametric statistics (Kruskal-Wallis and Mann-Whitney) were performed when normality was not found (p< 0.05). Results: MIs with larger diameters and bicortical anchorage showed greater primary stability regarding insertion torque (p< 0.05) and micromobility (p< 0.05). Only MI diameter had an effect on the pull-out strength test. Larger diameter MIs presented better retention in pull-out strength tests (p< 0.001), regardless of mono- or bicortical anchorage. Conclusions: MI primary stability is dependent on its diameter and type of anchorage. Bicortical anchorage showed greater stability when compared with monocortical anchorage, independently of other variables.

Temporary Implant-Supported Single Crowns Using Titanium Base Abutments: An In Vitro Study on Bonding Stability and Pull-out Forces

2020 ◽  
Vol 33 (5) ◽  
pp. 546-552
Author(s):  
João Pitta ◽  
Jasmina Bijelic-Donova ◽  
Felix Burkhardt ◽  
Vincent Fehmer ◽  
Timo Närhi ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Pull Out ◽  
Single Crowns
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