Biofilm Affecting the Mechanical Integrity of Implant-Abutment Joints

Prado, Abraão Moratelli; Pereira, Jorge; Henriques, Bruno; Benfatti, César Am; Magini, Ricardo de Souza; López‐López, José; Souza, Júlio C. M.

doi:10.11607/ijp.4759

Cited by 22 publications

(47 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fit of the implant‐abutment assembly is dependent on the machining process and properties of the structural materials. However, a poor fit at dental implant‐based connections can result in microgaps at the implant‐abutment connection causing higher displacement of the structural parts on mastication forces or occlusal prematurity from incomplete seating …”

Section: Dental Implant Connectionsmentioning

confidence: 99%

“…The mechanical integrity of different implant‐abutment connections has been studied both in vitro and in vivo . Previous studies have shown a significantly higher percentage of mechanical instability in external hexagon implant connections when compared to internal connections .…”

Section: Dental Implant Connectionsmentioning

confidence: 99%

“…The long‐term mechanical integrity of the implant‐abutment connection can be evaluated by measuring the removal torque at certain periods of clinical inspection . The microgaps present at the implant‐abutment connection compromise the sealing performance of the MT connection leading to the penetration of substances (eg, glycoproteins, water, acidic substances) and microorganisms . Glycoproteins, water and biofilms act as lubricant biological materials decreasing the friction on the titanium surfaces and causing micromovements of the implant‐abutment components .…”

Section: Dental Implant Connectionsmentioning

confidence: 99%

“…Various factors can influence the stress distribution at implant‐abutment connections such as loading condition, connection misfit, material properties, connection geometry, contact length and the coefficient of friction . Furthermore, micromovements occur at the implant‐abutment connection during occlusal loading leading to fatigue and wear of the contacting materials . At implant‐abutment connections, the abutment screw is subjected to the highest stress concentrations, mainly at the neck region .…”

Section: Distribution Of Stresses At Dental Implant Connectionsmentioning

confidence: 99%

“…Microgaps are vulnerable to penetration of oral fluids, glycoproteins and microorganisms. In fact, the implant‐abutment connection is filled with these biological materials, which can influence the wear and corrosion of the contacting surfaces . In addition, micromovements of the abutment induced by mastication can lead to friction and wear of the implant‐abutment surfaces .…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Synergistic interactions between corrosion and wear at titanium‐based dental implant connections: A scoping review

Apaza‐Bedoya

Tarce

Benfatti

et al. 2017

J of Periodontal Research

115

110

View full text Add to dashboard Cite

Two-piece implant systems are mainly used in oral implantology involving an osseointegrated implant connected to an abutment, which supports prosthetic structures. It is well documented that the presence of microgaps, biofilms and oral fluids at the implant-abutment connection can cause mechanical and biological complications. The aim of this review paper was to report the degradation at the implant-abutment connection by wear and corrosion processes taking place in the oral cavity. Most of the retrieved studies evaluated the wear and corrosion (tribocorrosion) of titanium-based materials used for implants and abutments in artificial saliva. Electrochemical and wear tests together with microscopic techniques were applied to validate the tribocorrosion behavior of the surfaces. A few studies inspected the wear on the inner surfaces of the implant connection as a result of fatigue or removal of abutments. The studies reported increased microgaps after fatigue tests. In addition, data suggest that micromovements occurring at the contacting surfaces can increase the wear of the inner surfaces of the connection. Biofilms and/or glycoproteins act as lubricants, although they can also amplify the corrosion of the surfaces. Consequently, loosening of the implant-abutment connection can take place during mastication. In addition, wear and corrosion debris such as ions and micro- and nanoparticles released into the surrounding tissues can stimulate peri-implant inflammation that can lead to pathologic bone resorption.

show abstract

Section: Dental Implant Connectionsmentioning

confidence: 99%

Section: Dental Implant Connectionsmentioning

confidence: 99%

Section: Dental Implant Connectionsmentioning

confidence: 99%

Section: Distribution Of Stresses At Dental Implant Connectionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Synergistic interactions between corrosion and wear at titanium‐based dental implant connections: A scoping review

Apaza‐Bedoya

Tarce

Benfatti

et al. 2017

J of Periodontal Research

115

110

View full text Add to dashboard Cite

show abstract

Antibiofilm effects of titanium surfaces modified by laser texturing and hot‐pressing sintering with silver

et al. 2021

Self Cite

View full text Add to dashboard Cite

Peri‐implant diseases are one of the main causes of dental implant failure. New strategies for dental implants manufacturing have been developed to prevent the accumulation of bacteria and related inflammatory reactions. The main aim of this work was to develop laser‐treated titanium surfaces covered with silver that generate a electrical dipole to inhibit the oral bacteria accumulation. Two approaches were developed for that purpose. In one approach a pattern of different titanium dioxide thickness was produced on the titanium surface, using a Q‐Switched Nd:YAG laser system operating at 1064 nm. The second approach was to incorporate silver particles on a laser textured titanium surface. The incorporation of the silver was performed by laser sintering and hot‐pressing approaches. The anti‐biofilm effect of the discs were tested against biofilms involving 14 different bacterial strains growth for 24 and 72 hr. The morphological aspects of the surfaces were evaluated by optical and field emission guns scanning electronical microscopy (FEGSEM) and therefore the wettability and roughness were also assessed. Physicochemical analyses revealed that the test surfaces were hydrophilic and moderately rough. The oxidized titanium surfaces showed no signs of antibacterial effects when compared to polished discs. However, the discs with silver revealed a decrease of accumulation of Porphyromonas gingivalis and Prevotella intermedia strains. Thus, the combination of Nd:YAG laser irradiation and hot‐pressing was effective to produce silver‐based patterns on titanium surfaces to inhibit the growth of pathogenic bacterial species. The laser parameters can be optimized to achieve different patterns, roughness, and thickness of the modified titanium layer regarding the type and region of the implant.

show abstract

Biomechanical analyses of one‐piece dental implants composed of titanium, zirconia, PEEK, CFR‐PEEK, or GFR‐PEEK: Stresses, strains, and bone remodeling prediction by the finite element method

et al. 2021

Self Cite

View full text Add to dashboard Cite

This work aimed to assess the biomechanics, using the finite element method (FEM), of traditional titanium Morse taper (MT) dental implants compared to one-piece implants composed of zirconia, polyetheretherketone (PEEK), carbon fiber-reinforced PEEK (CFR-PEEK), or glass fiber-reinforced PEEK (GFR-PEEK). MT and one-piece dental implants were modeled within a mandibular bone section and loaded on an oblique force using FEM. A MT implant system involving a Ti6Al4V abutment and a cp-Ti grade IV implant was compared to one-piece implants composed of cp-Ti grade IV, zirconia (3Y-TZP), PEEK, CFR-PEEK, or GFR-PEEK. Stress on bone and implants was computed and analyzed while bone remodeling prediction was evaluated considering equivalent strain. In comparison to one-piece implants, the traditional MT implant revealed higher stress peak (112 MPa). The maximum stresses on the onepiece implants reached $80 MPa, regardless their chemical composition. MT implant induced lower bone stimulus, although excessive bone strain was recorded for PEEK implants. Balanced strain levels were noticed for reinforced PEEK implants of which CFR-PEEK one-piece implants showed proper biomechanical behavior. Balanced strain levels might induce bone remodeling at the peri-implant region while maintaining low risks of mechanical failures. However, the strength of the PEEKbased composite materials is still low for long-term clinical performance.biomechanics, dental implants, dental materials, finite elements analysis, implant design 1 | INTRODUCTION Titanium dental implants have been increasingly used to replace missing teeth within a high long-term success rate as reported in literature. [1][2][3][4] Dental implants are often composed of two components: the endosseous implant itself and the abutment. The connection between traditional abutment and endosseous implants can be commonly achieved by screwing the abutment in the inner implant surfaces up to a maximum adequate torque or within a Morse taper (MT) effect, in which an applied preload generates stresses that keep the components attached to each each other. 5,6 At last, a single-or multi-unit prosthesis is cemented and/or screwed over the abutment to replace the coronal dental structure. MT implant systems typically reveal higher mechanical stability due to their connection on contacting surfaces and distribution of stresses to the bone. [5][6][7][8] However, the microgap existing between

show abstract

Biofilm Affecting the Mechanical Integrity of Implant-Abutment Joints

Cited by 22 publications

References 5 publications

Synergistic interactions between corrosion and wear at titanium‐based dental implant connections: A scoping review

Synergistic interactions between corrosion and wear at titanium‐based dental implant connections: A scoping review

Antibiofilm effects of titanium surfaces modified by laser texturing and hot‐pressing sintering with silver

Biomechanical analyses of one‐piece dental implants composed of titanium, zirconia, PEEK, CFR‐PEEK, or GFR‐PEEK: Stresses, strains, and bone remodeling prediction by the finite element method

Contact Info

Product

Resources

About