A Comparison of Zirconia and Titanium Abutments for Microleakage

Abdelhamed, Mohamed I.; Galley, Jeffrey D.; Bailey, Michael T.; Johnston, William M.; Holloway, Julie A.; Leblebicioğlu, Binnaz

doi:10.1111/cid.12301

Cited by 26 publications

(23 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In vitro, zirconia abutments were found to have a larger microgap and microleakage than titanium abutments . ‐ A systematic review discouraged the application of zirconia abutments due to more leakage and worse sealing . In contrast, a recent study showed zirconia abutments presented a smaller microgap .…”

mentioning

confidence: 99%

Long‐Term Survival and Peri‐Implant Health of Titanium Implants with Zirconia Abutments: A Systematic Review and Meta‐Analysis

Cao

Chen

et al. 2019

Journal of Prosthodontics

View full text Add to dashboard Cite

Purpose To evaluate the long‐term implant survival rate of titanium implants with zirconia abutments, and the effects of implants with zirconia abutments on marginal bone loss (MBL) and pocket probing depth (PPD) compared with all‐titanium implants. Materials and Methods The searched electronic database included the Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE, and the Chinese Biomedical Literature Database. Two types of studies were included: clinical studies reporting the survival rate of titanium implants with zirconia abutments with at least a mean/median 5‐year follow‐up, and clinical trials reporting the effects of implants with zirconia abutments on MBL and PPD compared with all‐titanium implants. Two reviewers screened and selected the records, assessed quality, and extracted data of included studies independently. Results This review included 16 studies from 18 publications. None of the comparative studies was assessed at a low risk of bias. The overall implant survival rate of implants with zirconia abutments was estimated to be 96% (confidence intervals [CIs] [94%, 98%], I2 = 0%). For the comparison between implants with zirconia abutments and all‐titanium implants, the results significantly favored implants with zirconia abutments (for MBL, mean difference [MD] = –0.09, CIs [–0.17, 0.00], p = 0.05, I2 = 40%; for PPD, MD = –0.18, CIs [–0.32, –0.05], p = 0.008, I2 = 0%). Zirconia abutments were favored more when the prosthesis was an implant‐supported overdenture rather than a single crown. Conclusions Implants with zirconia abutments may have an acceptable performance on peri‐implant health compared with all‐titanium implants; however, the implant survival rate of implants with zirconia abutments is slightly lower than all‐titanium implants in the long‐term follow‐up. Additional studies are needed to explain this dichotomy.

show abstract

mentioning

confidence: 99%

Long‐Term Survival and Peri‐Implant Health of Titanium Implants with Zirconia Abutments: A Systematic Review and Meta‐Analysis

Cao

Chen

et al. 2019

Journal of Prosthodontics

View full text Add to dashboard Cite

show abstract

“…Leakage at the implant-abutment junction is dependent on the fit between the abutment and implant, the degree of micromovement between the components, and the torque force used to connect them. Leak teating reported in the literature indicates that 2-piece implant systems can contain a gap between the implant and abutment (Abdelhamed et al, 2015;Alves et al, 2016;Cavusoglu et al, 2014;Dellow et al, 1997;D'Ercole et al, 2015;Fernández et al, 2014;Quirynen and van Steenberghe, 1993;Scarano et al, 2016;Zanardi et al, 2012). The microgap provides a potential site for the accumulation of bacteria and their metabolites and allows for the micropumping effect that allows for bacteria to colonize the internal aspect of the implant.…”

Section: Discussionmentioning

confidence: 99%

In vitro assessment of connection strength and stability of internal implant-abutment connections

Kofron

Carstens

Cong

et al. 2019

Clinical Biomechanics

View full text Add to dashboard Cite

Background: Various connections have been machined to improve the fit between the dental abutment and implant. In vivo, the instability created by imprecisely fitting components can cause soft tissue irritation and bacterial colonization of the implant system. The aim of this study was to quantify abutment stability under in vitro force applications. Methods: Abutment stability and fit were quantitatively measured after application of rotational, vertical, and horizontal forces. Findings: The abutment connection held by friction (Friction-Fit) was the only group to have 0°angular rotation. A significantly greater vertical force was required to pull the abutment from the implant for the Friction-Fit connection as compared to all other experimental groups. The abutment connection held by a mechanically locking friction-fit with four grooves (CrossFit) and Friction-Fit demonstrated significantly lower lateral movement as compared to all other connections. The remaining connections evaluated included two hexagon connections that rely on screw placement for abutment fit (Conical + Hex #1 and Conical + Hex #2), one connection with protruding slots to align with recessed channels inside the implant (Conical + 6 Indexing Slots), and an internal connection that allows for abutment indexing every 120°(Internal Tri-Channel). Interpretation: Internal connection geometry influenced the degree of abutment movement. Friction-Fit and CrossFit connections exhibited the lowest rotational and horizontal motions. Significant differences were found between Friction-Fit and CrossFit following the application of a vertical force, with the Friction-Fit requiring a significantly greater pull force to separate the abutment from the implant.

show abstract

“…Due to the properties of high strength, low density, and high wear and corrosion resistances, zirconia has been one of the most chosen materials to manufacture the fixture [3,4]. However, a zirconia fixture is very susceptible to microscopic cracks and damage due to its high brittleness and low fracture toughness, which will further affect the quality of grinding or polishing surfaces [5]. To insure the product quality and improve service life of zirconia fixtures, investigations of failure mechanisms and fatigue life prediction have drawn great attention in scientific community.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Life Prediction of the Zirconia Fixture Based on Boundary Element Method

Wang

et al. 2020

Shock and Vibration

View full text Add to dashboard Cite

Zirconia grinding fixtures have been widely used in semiconductor industry to improve the quality and precision of the products. For maximizing the service life and minimizing the risks of accidental damage, it is critical to have a better understanding of the fatigue life of zirconia grinding fixtures. To this end, a boundary element method is developed in this paper to investigate their crack growth and fatigue life. To validate the proposed method, the stress intensity factor of a typical plate structure with initial cracks is considered. On this basis, Paris Law is employed in the boundary element model to further study the crack growth and stress distributions in the zirconia fixture under cyclic loads. Numerical results show that stress concentration occurs at the pillar of the fixture, and crack growth is perpendicular to the loading direction.

show abstract

A Comparison of Zirconia and Titanium Abutments for Microleakage

Cited by 26 publications

References 23 publications

Long‐Term Survival and Peri‐Implant Health of Titanium Implants with Zirconia Abutments: A Systematic Review and Meta‐Analysis

Long‐Term Survival and Peri‐Implant Health of Titanium Implants with Zirconia Abutments: A Systematic Review and Meta‐Analysis

In vitro assessment of connection strength and stability of internal implant-abutment connections

Fatigue Life Prediction of the Zirconia Fixture Based on Boundary Element Method

Contact Info

Product

Resources

About