| 41. |
- Chrcanovic, Bruno, et al.
(författare)
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Immediately loaded non-submerged versus delayed loaded submerged dental implants: A meta-analysis.
- 2015
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Ingår i: International Journal of Oral & Maxillofacial Surgery. - : Elsevier BV. - 0901-5027 .- 1399-0020. ; 44:4, s. 493-506
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of the present meta-analysis was to test the null hypothesis of no difference in the implant failure rate, postoperative infection, and marginal bone loss for patients being rehabilitated with immediately loaded non-submerged dental implants or delayed loaded submerged implants, against the alternative hypothesis of a difference. An electronic search without time or language restrictions was undertaken in March 2014. Eligibility criteria included clinical human studies, either randomized or not. The search strategy resulted in 28 publications. The inverse variance method was used for a random- or fixed-effects model, depending on the heterogeneity. The estimates of an intervention were expressed as the risk ratio (RR) and mean difference (MD) in millimetres. Twenty-three studies were judged to be at high risk of bias, one at moderate risk of bias, and four studies were considered at low risk of bias. The difference between procedures (submerged vs. non-submerged implants) significantly affected the implant failure rate (P=0.02), with a RR of 1.78 (95% confidence interval (CI) 1.12-2.83). There was no apparent significant effect of non-submerged dental implants on the occurrence of postoperative infection (P=0.29; RR 2.13, CI 0.52-8.65) or on marginal bone loss (P=0.77; MD -0.03, 95% CI -0.23 to 0.17).
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| 42. |
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| 43. |
- Chrcanovic, Bruno, et al.
(författare)
-
Platform switch and dental implants: A meta-analysis.
- 2015
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Ingår i: Journal of dentistry. - : Elsevier BV. - 1879-176X .- 0300-5712. ; 43:6, s. 629-646
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Tidskriftsartikel (refereegranskat)abstract
- To test the null hypothesis of no difference in the implant failure rates, marginal bone loss (MBL) and postoperative infection in patients who received platform-switched implants or platform-matched implants, against the alternative hypothesis of a difference.
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| 44. |
- Chrcanovic, Bruno Ramos, et al.
(författare)
-
Dental implants in patients with Sjögren's syndrome: a case series and a systematic review
- 2019
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Ingår i: International Journal of Oral and Maxillofacial Surgery. - : Elsevier BV. - 0901-5027 .- 1399-0020. ; 48:9, s. 1250-1259
-
Forskningsöversikt (refereegranskat)abstract
- The purpose of this study was to assess the clinical outcomes of dental implants in patients with Sjögren's syndrome (SS). The study consisted of two parts: report of a case series and a systematic review of the literature. The results of the clinical series revealed that 19 patients received 107 implants and were followed for a mean of 125 months. Two patients lost three implants (failure rate 2.8%, 3/107). At the last follow-up, there was a mean marginal bone loss (MBL) of −2.190 ± 1.384 mm; estimated MBL after 30 years was 4.39 mm. The review identified 18 studies, resulting in 19 studies for analysis including the present clinical series. A total of 712 implants were placed in 186 patients; 705 implants were followed up for a mean of 72.5 months (failure rate 4.1%, 29/705; failed at a mean time of 12.9 ± 31.7 months). The probability of failure was 2.8% (95% confidence interval 1.6–4.1%). Primary SS patients had a lower implant failure rate (2.5%, 3/118) than secondary SS patients (6.5%, 12/184). In conclusion, dental implants should be considered by dentists as a viable treatment option for patients with SS, as the failure rate is fairly low. SS patients may, however, present a higher MBL around implants than patients from the general population. © 2019 International Association of Oral and Maxillofacial Surgeons
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| 45. |
- Chrcanovic, Bruno, et al.
(författare)
-
Smoking and dental implants: A systematic review and meta-analysis.
- 2015
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Ingår i: Journal of dentistry. - : Elsevier BV. - 1879-176X .- 0300-5712. ; 43:5, s. 487-498
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Forskningsöversikt (refereegranskat)abstract
- Recent studies implicate smoking as a significant factor in the failure of dental implants. This review aims to test the null hypothesis of no difference in the implant failure rates, risk of postoperative infection, and marginal bone loss for smokers versus non-smokers, against the alternative hypothesis of a difference.
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| 46. |
- Chrcanovic, Bruno, et al.
(författare)
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Tilted versus axially placed dental implants: A meta-analysis.
- 2015
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Ingår i: Journal of Dentistry. - : Elsevier BV. - 0300-5712 .- 1879-176X. ; 43:2, s. 149-170
-
Forskningsöversikt (refereegranskat)abstract
- The purpose of the present review was to test the null hypothesis of no difference in the implant failure rate, marginal bone loss, and postoperative infection for patients being rehabilitated by tilted or by axially placed dental implants, against the alternative hypothesis of a difference.
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| 47. |
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| 48. |
- Duddeck, D. U., et al.
(författare)
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On the Cleanliness of Different Oral Implant Systems: A Pilot Study
- 2019
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Ingår i: Journal of Clinical Medicine. - : MDPI AG. - 2077-0383. ; 8:9
-
Tidskriftsartikel (refereegranskat)abstract
- (1) Background: This paper aimed to compare the cleanliness of clinically well-documented implant systems with implants providing very similar designs. The hypothesis was that three well-established implant systems from Dentsply Implants, Straumann, and Nobel Biocare were not only produced with a higher level of surface cleanliness but also provided significantly more comprehensive published clinical documentation than their correspondent look-alike implants from Cumdente, Bioconcept, and Biodenta, which show similar geometry and surface structure. (2) Methods: Implants were analyzed using SEM imaging and energy-dispersive X-ray spectroscopy to determine the elemental composition of potential impurities. A search for clinical trials was carried out in the PubMed database and by reaching out to the corresponding manufacturer. (3) Results: In comparison to their corresponding look-alikes, all implants of the original manufacturers showed-within the scope of this analysis-a surface free of foreign materials and reliable clinical documentation, while the SEM analysis revealed significant impurities on all look-alike implants such as organic residues and unintended metal particles of iron or aluminum. Other than case reports, the look-alike implant manufacturers provided no reports of clinical documentation. (4) Conclusions: In contrast to the original implants of market-leading manufacturers, the analyzed look-alike implants showed significant impurities, underlining the need for periodic reviews of sterile packaged medical devices and their clinical documentation.
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| 49. |
- Duddeck, D. U., et al.
(författare)
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Quality Assessment of Five Randomly Chosen Ceramic Oral Implant Systems: Cleanliness, Surface Topography, and Clinical Documentation
- 2021
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Ingår i: International Journal of Oral & Maxillofacial Implants. - : Quintessence Publishing. - 0882-2786 .- 1942-4434. ; 36:5, s. 863-874
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: After some initial setbacks in the 1970s, ceramic implants seem to be a promising alternative to titanium implants. Since the surface of an implant system represents the interface to surrounding biologic structures, the study focuses on cleanliness and surface topography. Clinical documentation of the corresponding systems completes the picture and allows a better evaluation of zirconia implant systems. Materials and Methods: Five different ceramic implant systems were selected randomly and purchased via blind-shopping: Z5s (Z-Systems), ZiBone (COHO), W implant (TAVDental), ceramic. implant (vitaclinical), and BioWinI/Standard Zirkon Implantat (Champions-Implants/ZV3 system). Three samples of each implant system underwent scanning electron microscopy (SEM) imaging and elemental analysis (EDS). Where appropriate, subsequent Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) was performed to identify the chemical nature of impurities. Surface topography was evaluated, and a search for clinical trials in the PubMed database, on the websites and by written request to each dental implant manufacturer, was performed. Results: Surfaces of Champions implants (ZV3) and Z-Systems implants were relatively clean, whereas the other investigated surfaces of vitaclinical, TAV Dental, and ZiBone implants all displayed organic contaminations on their surfaces. Four of the investigated ceramic implants showed a moderately rough implant surface. Only the vitaclinical ceramic implant had minimal surface roughness. Three ceramic designs-vitaclinical, ZV3, and Z-Systems-had clinical trials documented with up to 3 years of follow-up and results varying between 82.5% and 100% survival. TAV Dental W and ZiBone implant systems lacked properly conducted clinical recording of results. Conclusion: The results of this study showed that it is technically possible to produce zirconia implants that are largely residue-free. On the other hand, the variety of significant residues found in this analysis raises concerns, as contamination may lead to undesirable biologic effects. The lack of clinical studies in peer-reviewed journals does not seem to be relevant for the approval of marketing, nor does the lack of surface cleanliness. In the authors' opinion, a critical analysis of these aspects should be included in a more stringent future analysis prior to the marketing of oral implant systems.
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| 50. |
- Edblad, Thorsten, et al.
(författare)
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Micro-topography of dental enamel and root cementum.
- 2009
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Ingår i: Swedish dental journal. - : Swedish Dental Association. - 0347-9994. ; 33:1, s. 41-8
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Tidskriftsartikel (refereegranskat)abstract
- The focus for the present study was to characterise dental enamel and cementum at the cervical region of healthy teeth by use of interferometry. The effect of a protein-dissolving enzyme, used for cleaning (Neutrase) on the surface topography, was also evaluated. Knowledge about the normal variation of surface topography of natural teeth is limited. In the design of artificial surfaces, intended to replace the function of lost biological surfaces, detailed knowledge of the latter is therefore of great importance. Nine health caries free premolars were used. The root cementum of three teeth was used for evaluation of Neutrase on the surface. On the six remaining teeth, the differences between the surface textures of enamel and root cementum were evaluated using 3D Interferometry. No statistical significant effect of Neutrase was identified. A significant difference between enamel and root cementum concerning surface topography using the different 3D parameters was recorded. When comparing values from the literature, the topography of artificial materials used in dentistry show similarities with the topography of the enamel and root cementum surfaces evaluated.
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