A retrospective clinical study of fixed tooth- and implant-supported prostheses in titanium and cobalt-chromium-ceramic: 5–9-year follow-up

Nilsson, Sheida; Stenport, Victoria Franke; Nilsson, Marco; Göthberg, Catharina

doi:10.1007/s00784-022-04559-x

Cited by 3 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Low oral pH can lead to chemical corrosion. In long-term observations, reports in the literature confirm the low failure rate associated with the use of crowns and bridges on a titanium base [ 2 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. Initially, titanium was used for the substructures in a technically clean condition (CAD/CAM Kavo Everest procedure).…”

Section: Introductionmentioning

confidence: 89%

The Impact of Sintering Technology and Milling Technology on Fitting Titanium Crowns to Abutment Teeth—In Vitro Studies

2022

View full text Add to dashboard Cite

Introduction: The aim of the study is to evaluate the marginal and internal fit of titanium alloy (Ti6Al4V) crowns using the Selective Laser Melting (SLM) method and CAD/CAM milling. Materials and Methods: The research materials are abutment teeth and prosthetic crowns. The method is based on scanning the abutments and the interior of the substructures, creating their 3D models, using the program for comparison, and determining error maps of fitting crowns to the reference models, in the form of positive and negative deviations. Adding the deviations gives information about the tightness of the crowns. The Shapiro–Wilk test and the one-way ANOVA analysis were performed. The level of significance was p = 0.05. Results: The crowns made in SLM, a slightly better internal fit was found than for milled crowns, as well as a comparable marginal fit. The mean deviations for the sintering were the values [mm]: −0.039 and +0.107 for tooth 15 and −0.033 and +0.091 for tooth 36, and for the milling –0.048 and +0.110 for tooth 15 and –0.038 and +0.096 and for tooth 36. Conclusion: Based on the research conducted and the experience in therapeutic procedures, it can be indicated that the fitting of titanium alloy crowns in SLM and milling meets the clinical requirements. To evaluate the technology, a method was developed that determines the accuracy of mapping the shape of the tooth abutments in the crown substructures for the individual conditions of the patient.

show abstract

Section: Introductionmentioning

confidence: 89%

The Impact of Sintering Technology and Milling Technology on Fitting Titanium Crowns to Abutment Teeth—In Vitro Studies

2022

View full text Add to dashboard Cite

show abstract

“…(51) The extensive length of the FDPs and the higher number of abutments compared to our retrospective study could have negatively influenced the results. (51,62,63,92) The number of abutments has been shown to affect the mean life-span of FDPs with higher mean life-span for FDPs with two abutments compared to FDPs with three or more abutments. (93) A higher number of abutments for FDPs may force clinicians to over-prepare the abutments to establish the path of insertion, which could reduce retention and resistance form and lead to loss of retention (40,93) which has been a common complication in FDPs.…”

Section: Survival Rates Of Fdps and Scsmentioning

confidence: 99%

“…These factors may reduce the quality and reliability of retrospective studies. (92) One of the limitations of Study II was the low number of included FDPs considering the extensive period of 1981 to 2018 and taking into account all different treatment providers; dental students, general practitioners, and specialists. As cantilever FDPs represent very specific challenges from the perspective of abutment tooth vitality aspects, (138,162) these were excluded.…”

Section: Limitations Of the Present Retrospective Studies (Ii III Iv)mentioning

confidence: 99%

On failures and complications of tooth-supported fixed prostheses

Hawthan¹

View full text Add to dashboard Cite

Loss of tooth structure or loss of the tooth may affect masticatory function, phonetics, a person´s appearance, and might ultimately impair quality of life. Fixed prosthetic rehabilitation in the form of either fixed dental prosthesis (FDP)or single crown (SC) is a reliable treatment alternative to restore lost functions. Tooth-supported fixed prosthetic restorations (FDPs, SCs) are influenced by multiple combined general and local factors that may affect the risk of complication and failure. Recognizing risk factors is important in treatment planning, and will help the clinician optimize treatment outcomes. This will also be beneficial for both the patient and society from a cost-effective aspect, as a reduction in complications and failures reduces costs. Several factors have been suggested to impact the survival and failure rates of FDPs and SCs, but there is still limited evidence concerning the clinical outcomes of FDPs and SCs when subjected to a combination of multiple factors in a clinical setting. The aim of the present thesis was to evaluate whether the survival and failure rates of full-coverage tooth-supported fixed prosthetic restorations (FDPs, SC) are influenced by general and/or local factors. This thesis is based on a systematic review (Paper I) and three retrospective studies (Papers II, III, and IV). In Study I, PubMed, Web of Science and ScienceDirect databases were searched and manual searches were conducted to identify clinical human studies reporting on full-coverage tooth-supported FDPs and SCs. Cumulative survival rate (CSR) was calculated over the maximal period of follow-up reported, in a life-table survival analysis. Seventeen studies fulfilled the inclusion criteria. The highest 5-year survival rate was observed for all-ceramic and metal–ceramic SCs on vital teeth 97.8% (95%CI [97.1– 98.5%]), and all-ceramic SCs on non-vital teeth with fiber post 99.1% (95% CI [97.7– 100.4%]). Metal–ceramic SCs on vital teeth 97.5% (95% CI[96.8–98.3%]) showed a statistically significant higher estimated 5-year survival rate compared to metal–ceramic SCs with cast metal post 94.5% (95% CI [93.3–95.8%], p <0.001) and fiber post 95.1% (95% CI [93.4–96.6%], p <0.007), respectively. For FDPs, the 5-year survival rate was higher for metal–ceramic FDPs on vital abutments 96.9% (95% CI [95.5–98.4%]), compared to FDPs retained by non-vital abutment(s) with cast metal posts 94.3% (95% CI [89.3–99.3%]). The difference was not statistically significant. Tooth vitality is suggested to contribute positively to the survival of SCs. The results are, however, limited by the small number of studies and the presence of uncontrolled cofounding clinical variables. In the retrospective studies II, III, and IV, dental records archives and the digital journals of all patients at the Faculty of Odontology, Malmö University, Sweden were reviewed to identify patients rehabilitated with full-coverage toothsupported FDPs and SCs. Cox regression was used to evaluate the associations between clinical covariates and prosthesis failure. The CSR was similar for FDPs and SCs after 5 years of function. CSR was higher for SCs compared to FDPs after 10, 15, and 20 years of function. Smoking, type of prosthesis material, and bruxism significantly influenced the survival of FDPs, whereas abutment vitality, position of the non-vital abutment, or prosthesis length did not show any significant influence on the occurrence of FDP failure. The survival of SC was influenced by anterior placement, non-vital abutments, and bruxism, while the patient’s age and sex, the location of the crowns in relation to the jaws, the type of tooth, the presence of post and core, and the type of crown material, treatment providers, or smoking did not show significant effects on the survival of SC.In summary, within the limitations of the review and retrospective studies, bruxism, smoking, and type of prosthesis material are suggested to contribute toFDP failure. Anterior placement, non-vital abutments, and bruxism are factors increasing the rate of SC failure.

show abstract

Prosthetic complications and failures of implant-supported fixed partial dentures: A scoping review

da Silva Bezerra,

Ribeiro,

Veríssimo

et al. 2023

The Journal of Prosthetic Dentistry

View full text Add to dashboard Cite

A retrospective clinical study of fixed tooth- and implant-supported prostheses in titanium and cobalt-chromium-ceramic: 5–9-year follow-up

Cited by 3 publications

References 21 publications

The Impact of Sintering Technology and Milling Technology on Fitting Titanium Crowns to Abutment Teeth—In Vitro Studies

The Impact of Sintering Technology and Milling Technology on Fitting Titanium Crowns to Abutment Teeth—In Vitro Studies

On failures and complications of tooth-supported fixed prostheses

Prosthetic complications and failures of implant-supported fixed partial dentures: A scoping review

Contact Info

Product

Resources

About