Microbiological Seal of Two Types of Tapered Implant Connections

Peruzetto, Wheslley M; Martinez, Elizabeth Ferreira; Peruzzo, Daiane Cristina; Joly, Júlio César; Napimoga, Marcelo Henrique

doi:10.1590/0103-6440201600604

Cited by 18 publications

(18 citation statements)

References 13 publications

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“…Additionally, the external hexagon determines the rotational position 15 . Alternatively, the morse taper connection has gained wide popularity for being more resistant to fatigue and for promoting a better seal against bacterial infiltration when considering conventional connections 16 , with sealing and friction principles. The morse taper has a design in which a cone with an angulation between 2 and 4 degrees is embedded in another cone by friction, without the need for screws, creating a cold weld between the parts, promoting greater resistance to displacement by axial and lateral forces and higher resistance to rotational movements 17 .…”

Section: Discussionmentioning

confidence: 99%

Influence of cantilever position and implant connection in a zirconia custom implant-supported fixed partial prosthesis: in silico analysis

Bastos

Bordin

Vasconcellos

et al. 2018

Rev. odontol. UNESP

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Introduction A better tension distribution on implants and abutments in implant-supported fixed partial prosthesis is essential in the rehabilitation of posterior mandible area. Objective: To evaluate the influence of cantilever position and implant connection in a zircônia custom implant-supported fixed partial prosthesis using the 3-D finite element method. Material and method: Four models were made based on tomographic slices of the posterior mandible with a zirconia custom three-fixed screw-retained partial prosthesis. The investigated factors of the in silico study were: cantilever position (mesial or distal) and implant connection (external hexagon or morse taper). 100 N vertical load to premolar and 300 N to molar were used to simulate the occlusal force in each model to evaluate the distribution of stresses in implants, abutments, screws and cortical and cancellous bone. Result: The external hexagon (EH) connection showed higher cortical compression stress when compared to the morse taper (MT). For both connections, the molar cantilever position had the highest cortical compression. The maximum stress peak concentration was located at the cervical bone in contact with the threads of the first implant. The prosthetic and abutment screws associated with the molar cantilevers showed the highest stress concentration, especially with the EH connection. Conclusion: Morse taper implant connetions associated with a mesial cantilever showed a more favorable treatment option for posterior mandible rehabilitation.

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Section: Discussionmentioning

confidence: 99%

Influence of cantilever position and implant connection in a zirconia custom implant-supported fixed partial prosthesis: in silico analysis

Bastos

Bordin

Vasconcellos

et al. 2018

Rev. odontol. UNESP

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“…It has been regarded as a safe, reliable and also an important factor for the maintenance of bone crest, due to microgap reduction and reduced risk of bacterial contamination. Some studies that used different conical fitting systems have, however, demonstrated bacterial leakage through such interface [3, 5, 8, 10, 15]. …”

Section: Discussionmentioning

confidence: 99%

“…Twelve sets of indexed tapered connection components and twelve sets of external hexagon connection components were used (Figure 1) for microbiological analysis as previously described [10]. For each model, an implant with its respective prosthetic abutment was used as a negative control and a set without the abutment as a positive control of microbial contamination.…”

Section: Methodsmentioning

confidence: 99%

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Microbiological Sealing Analysis of a Tapered Connection and External Hexagon System

Costa

Martinez

Ruellas

et al. 2017

International Journal of Dentistry

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Considering the variety of implant connection systems available in the market and the contrasting literature regarding tapered connection systems in terms of bacterial leakage, the aim of this in vitro study was to compare the effectiveness of the bacterial seal at the implant/abutment interface between an external hexagon and a tapered connection system. Twelve sets of indexed tapered connection components and twelve sets of external hexagon connection components were used for microbiological analysis. In addition, for each model, an implant with its respective prosthetic abutment was used as a negative control and another as a positive control of microbial contamination. Failure of the abutment/implant interface seal was observed via turbidity or presence of deposits in the culture. Descriptive analysis of the data and relative frequency (percentage) as well as Fisher's exact test were used at a significance level of 5%. Two of ten (20%) external hexagon specimens showed contamination against 0/10 (0%) tapered connection implants. In conclusion, both implant/abutment connections were able to prevent bacterial leakage in vitro.

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“…Implant systems differ from each other in the geometry of the implant / abutment interface, especially between tapered and hexagonal connections. Such interface is the most vulnerable point of the entire implant-supported restoration, as it must resist constant masticatory forces as well bacterial invasion (Alves et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Influence of mechanical cycling in the microbiological seal and microgaps in tapered connection implants

2019

Aust. J. Basic & Appl. Sci

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Background: This study evaluated the bacterial seal and adaptation of the abutments in a tapered connection implant system (Titaoss, Intraoss, Brazil) by means of microbiological and morphological analysis after cyclic loading. Objectives: The hypothesis of the study was to evaluate if after cycling the adaptation between abutment and implant creates gap allowing the passage of microorganisms. Methods: Twelve implants and their respective prosthetic abutments/crowns were fixed with a screw under torque of 20N.cm. The gap between the abutment and the implant was measured after the initial torque with the aid of a stereomicroscope and then subjected to compressive loads of 120 N and 2 Hz. After cycling, a new microgap measurement was performed and the samples were immersed in Escherichia coli suspension and incubated at 37°C. After 14 days, the prosthetic abutments were separated from the respective implants, and the presence of bacterial infiltration was evaluated. For the statistical calculations, the Student t test, binomial and G tests were used at a significance level of 5%. Results: The results showed that the specimens submitted to compressive load showed significantly smaller microgaps between the abutment and implant significantly than the non-cycled samples (p = 0.032). There was no significant difference in bacterial leakage in the implant models studied, regardless of mechanical cycling (p = 0.296). Conclusion: The tapered connection implant system used showed an effective bacterial seal, regardless of mechanical cycling.

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Microbiological Seal of Two Types of Tapered Implant Connections

Cited by 18 publications

References 13 publications

Influence of cantilever position and implant connection in a zirconia custom implant-supported fixed partial prosthesis: in silico analysis

Influence of cantilever position and implant connection in a zirconia custom implant-supported fixed partial prosthesis: in silico analysis

Microbiological Sealing Analysis of a Tapered Connection and External Hexagon System

Influence of mechanical cycling in the microbiological seal and microgaps in tapered connection implants

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