In Vitro Microstructural Analysis of Dental Implants Subjected to Insertion Torque and Pullout Test

Valente, Mariana Lima da Costa; Lepri, César Penazzo; Reis, Andréa Cândido dos

doi:10.1590/0103-6440201302402

Cited by 7 publications

(6 citation statements)

References 20 publications

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“…These assumptions are corroborated by the new findings previously presented in the literature. It was shown that there was a significant change in the surface concentration of Ti and C following mechanical surface stress [26]. Therefore, it may be anticipated, again, that the insertion process results in different mechanical stress to the surface at different moments [27].…”

Section: Discussionmentioning

confidence: 99%

Dental implant surfaces after insertion in bone: an in vitro study in four commercial implant systems

et al. 2017

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Section: Discussionmentioning

confidence: 99%

Dental implant surfaces after insertion in bone: an in vitro study in four commercial implant systems

et al. 2017

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“…All implants were mechanically inserted with the aid of a handpiece ratio 1/253 at a speed of 50 RPM, 32 N of torque up to the height of preparation of 10mm (16). …”

Section: Methodsmentioning

confidence: 99%

The effects of surgical preparation techniques and implant macro-geometry on primary stability: An in vitro study

Falisi¹,

Severino²,

Rastelli³

et al. 2017

Med Oral

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BackgroundThe attainment of a good primary stability is a necessary condition to ensure the success of osseointegration in implantology. In type IV cancellous bone, however, it is possible that a reduced primary stability can lead to an increased rate of failure. The aim of this study was therefore to determine, with the help of the resonance frequency (Osstell mentor), which technique of implant site preparation (piezo surgery, conventional, under-preparation, bone compaction, osteodistraction) and macro-geometry is able to improve implant stability in type IV cancellous bone.Material and Methods10 pig ribs were prepared with a surgical pre-drilled guide, calibrated for a correct implant positioning. On each rib, 5 implant sites (one for each technique) were prepared. Successively, 50 conical implants (Tekka Global D) were inserted and measured with the resonance frequency to evaluate the primary stability. Data collected were analyzed by analysis of variance (ANOVA) to test whether the Implant Stability Quotient (ISQ) values of the five techniques were significantly different.ResultsThe results showed that no significant differences among the ISQ values of the five techniques used were found. Also, no significant differences in the macro-geometry of the two types of compared implants were observed. However, the macro-geometry of Tekka implants, characterized by a double condensing thread, seems to provide greater ISQ values than those of single thread implants when using the same technique.ConclusionsIn light of these preliminary data, it is conceivable that in cases of reduced stability, such as those occurring with a type IV bone, all means ameliorating the primary stability and accelerating the osseointegration can be utilized. Key words:Implant primary stability, resonance frequency analysis, implant site preparation.

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“…• An in vitro microstructural analysis of dental implants subjected to insertion torque and pullout tests suggested that inserting and removing implants reduced the oxide layer (Valente, Lepri, & Reis, 2014).…”

Section: Mechanical Wearmentioning

confidence: 99%

What is the impact of titanium particles and biocorrosion on implant survival and complications? A critical review

Mombelli

Hashim

2018

Clinical Oral Implants Res

166

137

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Objectives To compile the current evidence regarding the association between the release of titanium particles and biologic complications of dental implants. Material and methods This is a critical review. We searched the literature using the terms “corrosion,” “allergy,” “hypersensitivity,” or “particles” together with “titanium,” “Ti,” “TiO2.” The bibliographies of identified publications and previously published review articles were scanned to find additional related articles. We included clinical studies, in vivo and in vitro experiments. Results Titanium particles and degradation products of titanium have been detected in oral and nonoral tissues. Particles are released from surfaces of dental implants because of material degradation in a process called tribocorrosion. It involves mechanical wear and environmental factors, notably contact to chemical agents and interaction with substances produced by adherent biofilm and inflammatory cells. In vitro, titanium particles can interfere with cell function and promote inflammation. A temporal association between exposure to titanium and occurrence of tissue reactions suggested hypersensitivity in a limited number of cases. However, there is poor specificity as the observed reactions could be initiated by other factors associated with the placement of implants. Titanium particles are commonly detected in healthy and diseased peri‐implant mucosa alike, at low levels even in gingiva of individuals without titanium implants. Rather than being the trigger of disease, higher concentrations of titanium in peri‐implantitis lesions could be the consequence of the presence of biofilms and inflammation. Conclusion There is an association between biocorrosion, presence of titanium particles, and biological implant complications, but there is insufficient evidence to prove a unidirectional causal relationship.

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In Vitro Microstructural Analysis of Dental Implants Subjected to Insertion Torque and Pullout Test

Cited by 7 publications

References 20 publications

Dental implant surfaces after insertion in bone: an in vitro study in four commercial implant systems

Dental implant surfaces after insertion in bone: an in vitro study in four commercial implant systems

The effects of surgical preparation techniques and implant macro-geometry on primary stability: An in vitro study

What is the impact of titanium particles and biocorrosion on implant survival and complications? A critical review

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