35 results on '"Raes S"'
Search Results
2. Oral-health-related quality of life changes of immediately loaded single implants in the esthetic zone: a 5-year prospective study
- Author
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Raes, S., Raes, F., Cooper, L., Giner-Tarrida, L., Soliva-Garriga, J., Cosyn, J., and De Bruyn, H.
- Published
- 2014
- Full Text
- View/download PDF
3. Verkorten van de behandelduur met orale implantaten in de anterieure esthetische regio
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Raes, F., primary and Raes, S., additional
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- 2013
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4. Short Oral CommunicationsAn analysis of the decision-making process for single implant treatment in general practice: 071
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Cosyn, J, Raes, S, DeMeyer, S, and De Bruyn, H
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- 2011
5. Nederlandse creatieve bedrijven in internationaal perspectief
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Kloosterman, R.C., Hofstede, B., Raes, S., and AMIDST (FMG)
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- 2006
6. Economie, cultuur en creativiteit
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Jacobs, D., Rutten, 27818, IJdens, 27819, Hofstede, B., Raes, S., and Faculteit Economie en Bedrijfskunde
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- 2006
7. Knelpunten in de creatieve productie, resultaten van een onderzoek naar de Nederlandse creatieve industrie
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Rutten, 27818, Jacobs, D., IJdens, 27819, Koch, K, Hofstede, B., Raes, S., and Faculteit Economie en Bedrijfskunde
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- 2006
8. Market structure, innovation and productivity: A marriage with chemistry
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Brouwer, E, van Dalen, HP, Roelandt, TJA, Ruiter, ML, van der Wiel, HP, Gelauff, G., Klomp, L., Raes, S., Roelandt, T.J.A., and Erasmus School of Economics
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- 2004
9. Integrating Evidence on the Determinants of Productivity
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Bartelsman, E.J., de Groot, H.L.F., Gelauff, G., Klomp, L., Raes, S., Roelandt, Th., Economics, and AMBER
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- 2004
10. The measurement of productivity: what do the numbers mean?
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van Ark, H.H., Klomp, L., Gelauff, G., Raes, S., Roeland, Th., and Global Economics & Management
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- 2004
11. Protection studies with a globin-enriched protein fraction of Ostertagia ostertagi
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Claerebout, E., primary, Smith, W.D., additional, Pettit, D., additional, Geldhof, P., additional, Raes, S., additional, Geurden, T., additional, and Vercruysse, J., additional
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- 2005
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12. Pathophysiological aspects of Mecistocirrus digitatus (Nematoda: Trichostrongylidae) infection in calves
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Van Aken, D., primary, Vercruysse, J., additional, Dargantes, A.P., additional, Lagapa, J.T., additional, Raes, S., additional, and Shaw, D.J., additional
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- 1997
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13. Evaluation of an enzyme-linked immunosorbent assay (ELISA) for the serological diagnosis of sarcoptic mange in swine
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Hollanders, W., primary, Vercruysse, J., additional, Raes, S., additional, and Bornstein, S., additional
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- 1997
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14. Isolation, characterization and immunolocalization of a globin-like antigen fromOstertagia ostertagiadults
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De Graaf, D. C., primary, Berghen, P., additional, Moens, L., additional, De Marez, T. M., additional, Raes, S., additional, Blaxter, M. L., additional, and Vercruysse, J., additional
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- 1996
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15. Pathophysiological aspects of Mecistocirrus digitatus (Nematoda: Trichostrongylidae) infection in calves
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Aken, D. Van, Vercruysse, J., Dargantes, A. P., Lagapa, J. T., Raes, S., and Shaw, D. J.
- Published
- 1997
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16. Artikel 709 Ger.W
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Brewaeys, Eric, Velghe, G., DE PUYDT, P., Allemeersch, B., VAN DEN BERGH, B., Raes, S., Vriendenkring VUB, and Privaat- en economisch recht
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- 2020
17. 'Commentaar bij art. 18 Ger. W.'
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Van Lersberghe, Patricia, Depuydt, P., Laenens, J., D., Lindemans, Raes, S., and Privaatrecht
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civil procedure ,procesrecht - Abstract
uitvoerige bespreking van art. 18 Ger. W.
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- 2002
18. 'Commentaar bij art. 17 Ger.W.'
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Van Lersberghe, Patricia, Depuydt, P., Laenens, J., D., Lindemans, Raes, S., and Privaatrecht
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civil procedure ,procesrecht - Abstract
grondige bespreking van art. 17 Ger. W.
- Published
- 2002
19. Artikelen 707-709 Ger. W
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Brewaeys, Eric, Allemeersch, B., Depuydt, P., Laenens, J., D., Lindemans, Raes, S., and Privaatrecht
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procedural law ,procesrecht - Abstract
De dagvaardingstermijn
- Published
- 1996
20. De artikelen 743, 745, 747, 748 en 750 Ger. W
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Brewaeys, Eric, Allemeersch, B., Depuydt, P., Laenens, J., D., Lindemans, Raes, S., and Privaatrecht
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procedural law ,procesrecht - Abstract
instaatstelling van de zaak -conclusies- vaststelling
- Published
- 1995
21. 'Commentaar bij art. 3 Ger.W.'
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Van Lersberghe, Patricia, Depuydt, P., Laenens, J., D., Lindemans, Raes, S., and Privaatrecht
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procesrecht ,overgangsrecht - Abstract
grondige commentaar van art. 3 ger.W. inzake de toepassing van de wet in de tijd
- Published
- 1993
22. Systematic Review on the Cost Effectiveness of Prostate Cancer Screening in Europe.
- Author
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Vynckier P, Annemans L, Raes S, Amrouch C, Lindgren P, Májek O, Beyer K, Leenen RCA, Venderbos LDF, Denijs F, van Harten MJ, Helleman J, Chloupková R, Briers E, Vasilyeva V, Rivas JG, Basu P, Chandran A, van den Bergh RCN, Collen S, Van Poppel H, and Roobol MJ
- Abstract
Background and Objective: In Europe, prostate cancer (PCa) is the most common cancer in men. Screening may therefore be crucial to lower health care costs, morbidity, and mortality. This systematic review aimed to provide a contemporary overview of the costs and benefits of PCa screening programmes., Methods: A peer-reviewed literature search was conducted, using the PICO method. A detailed search strategy was developed in four databases based on the following key search terms: "PCa", "screening", and "cost effectiveness". Any type of economic evaluation was included. The search strategy was restricted to European countries, but no restrictions were set on the year of publication., Key Findings and Limitations: A total of 7484 studies were identified initially. Of these, 19 studies described the cost effectiveness of PCa screening in Europe. Among the studies using an initially healthy study population, most focussed on risk- and/or age- and/or magnetic resonance imaging (MRI)-based screening in addition to prostate-specific antigen (PSA) testing and compared this with no screening. Incremental cost ratios (ICERs) varied from €5872 per quality-adjusted life year (QALY) to €372 948/QALY, with a median of €56 487/QALY. Risk-based screening followed by MRI testing seemed to be a more cost-effective strategy than no screening., Conclusions and Clinical Implications: This systematic review indicates that screening programmes incorporating a risk-based approach and MRI have the potential to be cost effective., Patient Summary: In this review, we looked at the cost effectiveness of prostate cancer screening in Europe. We found that a risk-based approach and incorporation of magnetic resonance imaging has the potential to be cost effective. However, there remains a knowledge gap regarding cost effectiveness of prostate cancer screening. Therefore, determinants of cost effectiveness require further investigation., (Copyright © 2024. Published by Elsevier B.V.)
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- 2024
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23. Investigating the Cost-Effectiveness of Telemonitoring Patients With Cardiac Implantable Electronic Devices: Systematic Review.
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Raes S, Prezzi A, Willems R, Heidbuchel H, and Annemans L
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- Humans, Pacemaker, Artificial economics, Health Care Costs statistics & numerical data, Cost-Benefit Analysis, Telemedicine economics, Defibrillators, Implantable economics
- Abstract
Background: Telemonitoring patients with cardiac implantable electronic devices (CIEDs) can improve their care management. However, the results of cost-effectiveness studies are heterogeneous. Therefore, it is still a matter of debate whether telemonitoring is worth the investment., Objective: This systematic review aims to investigate the cost-effectiveness of telemonitoring patients with CIEDs, focusing on its key drivers, and the impact of the varying perspectives., Methods: A systematic review was performed in PubMed, Web of Science, Embase, and EconLit. The search was completed on July 7, 2022. Studies were included if they fulfilled the following criteria: patients had a CIED, comparison with standard care, and inclusion of health economic evaluations (eg, cost-effectiveness analyses and cost-utility analyses). Only complete and peer-reviewed studies were included, and no year limits were applied. The exclusion criteria included studies with partial economic evaluations, systematic reviews or reports, and studies without standard care as a control group. Besides general study characteristics, the following outcome measures were extracted: impact on total cost or income, cost or income drivers, cost or income drivers per patient, cost or income drivers as a percentage of the total cost impact, incremental cost-effectiveness ratios, or cost-utility ratios. Quality was assessed using the Consensus Health Economic Criteria checklist., Results: Overall, 15 cost-effectiveness analyses were included. All studies were performed in Western countries, mainly Europe, and had primarily a male participant population. Of the 15 studies, 3 (20%) calculated the incremental cost-effectiveness ratio, 1 (7%) the cost-utility ratio, and 11 (73%) the health and cost impact of telemonitoring. In total, 73% (11/15) of the studies indicated that telemonitoring of patients with implantable cardioverter-defibrillators (ICDs) and cardiac resynchronization therapy ICDs was cost-effective and cost-saving, both from a health care and patient perspective. Cost-effectiveness results for telemonitoring of patients with pacemakers were inconclusive. The key drivers for cost reduction from a health care perspective were hospitalizations and scheduled in-office visits. Hospitalization costs were reduced by up to US $912 per patient per year. Scheduled in-office visits included up to 61% of the total cost reduction. Key drivers for cost reduction from a patient perspective were loss of income, cost for scheduled in-office visits and transport. Finally, of the 15 studies, 8 (52%) reported improved quality of life, with statistically significance in only 1 (13%) study (P=.03)., Conclusions: From a health care and patient perspective, telemonitoring of patients with an ICD or a cardiac resynchronization therapy ICD is a cost-effective and cost-saving alternative to standard care. Inconclusive results were found for patients with pacemakers. However, telemonitoring can lead to a decrease in providers' income, mainly due to a lack of reimbursement. Introducing appropriate reimbursement could make telemonitoring sustainable for providers while still being cost-effective from a health care payer perspective., Trial Registration: PROSPERO CRD42022322334; https://tinyurl.com/puunapdr., (©Sarah Raes, Andrea Prezzi, Rik Willems, Hein Heidbuchel, Lieven Annemans. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 19.04.2024.)
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- 2024
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24. Physicians' views on optimal use and payment system for telemedicine: a qualitative study.
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Raes S, Annemans L, Willems R, and Trybou J
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- Humans, Fee-for-Service Plans, Physicians, Telemedicine
- Abstract
Background: Telemedicine is already in use in daily practice, but appropriate reimbursement and physician payment is falling behind in many countries. One reason is the limited availability of research on the matter. This research therefore examined physicians' views on the optimal use and payment modalities for telemedicine., Methods: Sixty-one semi-structured interviews were conducted with physicians from 19 medical disciplines. Interviews were encoded using thematic analysis., Results: Telephone and video televisits tend not to be used as a first patient contact, except for triage of patients in urgency situations. Several minimum required modalities for the payment system of televisits and telemonitoring were identified. For televisits these were: (i) remuneration of both telephone- and videovisits to increase healthcare equity, (ii) little or no differentiation between videovisit and in-person visit fee to make videovisits financially attractive and sustainable for physicians, (iii) differentiation of televisit fee per medical discipline, and (iv) quality requirements such as mandatory reporting in the patient's medical file. The identified minimum required modalities for telemonitoring were: (i) an alternative payment scheme than fee-for-service, (ii) remunerating not only physicians but also other involved health professionals, (iii) designating and remunerating a coordinator, and (iv) distinguishing sporadic vs. continuously follow-up., Conclusions: This research investigated the telemedicine usage behavior of physicians. Moreover, several minimum required modalities were identified for a physician-supported payment system of telemedicine, as these innovations necessitate challenging and innovation of the healthcare payment systems as well., (© 2023. The Author(s).)
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- 2023
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25. How to Pay for Telemedicine: A Comparison of Ten Health Systems.
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Raes S, Trybou J, and Annemans L
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- Capitation Fee, Fee-for-Service Plans, Female, Humans, Pregnancy, Physicians, Telemedicine
- Abstract
Telemedicine has the opportunity to improve clinical effectiveness, health care access, cost-savings, and patient care. However, payment systems may form important obstacles to optimally use telemedicine and enable its opportunities. Little is known about payment systems for telemedicine. Therefore, this research aims to increase knowledge on paying for telemedicine by comparing payment systems for telemedicine and identifying similarities and differences. Based on the countries' official physician fee schedules, listing all reimbursed medical services performed by physicians, a comparative analysis of telemedicine payment systems in ten countries was conducted. Findings show that many countries lacked tele-expertise and telemonitoring payment, with the exception for some specific payments such as for telemonitoring in patients with cardiac implantable electronic devices. Moreover, a wide variety of benefit specifications were implemented in all countries to specify which type of clinician contact should be used (remote versus physical) in which circumstances. Payment parity between video and in-person visits was established only in a few countries. Furthermore, fee-for-service was the dominant payment system, although two countries used a capitation-based or hybrid system. The results imply several potential payment challenges when implementing telemedicine: complex benefit specifications, payment parity discussions, and risk of overconsumption due to the dominant fee-for-service system. These challenges appear to be less present in capitation-based or hybrid systems. However, the latter needs to be further explored to harness the full potential of telemedicine.
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- 2022
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26. The relationship of nursing home price and quality of life.
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Raes S, Vandepitte S, De Smedt D, Wynendaele H, DeJonghe Y, and Trybou J
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- Attitude to Health, Belgium, Cross-Sectional Studies, Female, Humans, Linear Models, Male, Surveys and Questionnaires, Nursing Homes economics, Quality of Health Care economics, Quality of Life
- Abstract
Background: Knowledge about the relationship between the residents' Quality of Life (QOL) and the nursing home price is currently lacking. Therefore, this study investigates the relationship between 11 dimensions of QOL and nursing homes price in Flemish nursing homes., Methods: The data used in this cross-sectional study were collected by the Flemish government from years 2014 to 2017 and originates from 659 Flemish nursing homes. From 2014 to 2016, data on the QOL of 21,756 residents was assessed with the InterRAI instrument. This instrument contains 11 QOL dimensions. Multiple linear regression analyses were conducted to examine the research question., Results: The multiple linear regressions indicated that a 10 euro increase in the daily nursing home price is associated with a significant decrease (P < 0.001) of 0.1 in 5 dimensions of QOL (access to services, comfort and environment, food and meals, respect, and safety and security). Hence, our results indicate that the association between price and QOL is very small. When conducting a subgroup analysis based on ownership type, the earlier found results remained only statistically significant for private nursing homes., Conclusion: Our findings show that nursing home price is of limited importance with respect to resident QOL. Contrary to popular belief, our study demonstrates a limited negative effect of price on QOL. Further research that includes other indicators of QOL is needed to allow policymakers and nursing home managers to improve nursing home residents' QOL.
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- 2020
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27. A long-term prospective cohort study on immediately restored single tooth implants inserted in extraction sockets and healed ridges: CBCT analyses, soft tissue alterations, aesthetic ratings, and patient-reported outcomes.
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Raes S, Eghbali A, Chappuis V, Raes F, De Bruyn H, and Cosyn J
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- Adult, Aged, Alveolar Bone Loss, Alveolar Process pathology, Alveolar Ridge Augmentation, Bone Resorption, Dental Prosthesis, Implant-Supported, Esthetics, Dental classification, Female, Follow-Up Studies, Gingiva pathology, Humans, Incisor diagnostic imaging, Incisor surgery, Male, Maxilla diagnostic imaging, Maxilla surgery, Middle Aged, Oral Health, Periodontal Index, Periodontal Pocket classification, Prospective Studies, Tooth Extraction, Treatment Outcome, Young Adult, Dental Implants, Single-Tooth, Immediate Dental Implant Loading adverse effects, Patient Reported Outcome Measures, Patient Satisfaction, Tooth Socket surgery
- Abstract
Background: Although many studies have been published on single implants, long-term data remain scarce., Purpose: To evaluate immediately restored single implants after at least 8 years of follow-up in terms of buccal bone, soft tissue alterations, aesthetic ratings, and patient-reported outcomes., Materials and Methods: This prospective cohort study included patients who were consecutively treated with an immediately restored single implant installed in an extraction socket (IIT) or a healed ridge (CIT) in the anterior maxilla. Biomaterials were never used. CBCTs were taken at study termination, soft tissue alterations, and Pink Esthetic Score were evaluated between 1 year and study termination using standardized clinical images. Patient satisfaction was also registered., Results: About 11/16 initially treated patients in the IIT cohort (10 men, 6 women; mean age 45) and 18/23 initially treated patients in the CIT cohort (12 men, 11 women; mean age 40) could be evaluated after more than 8 years. A buccal bone wall less than 2 mm was found at all implant sites. A thin buccal bone wall less than 1 mm was found at 42% of the implant sites. In the CIT cohort, 8 patients had a missing buccal bone in the crestal area, although bone was present at the time of surgery. Alveolar process deficiency significantly deteriorated (P ≤ .046), whereas vertical soft tissue levels and PES remained stable over time in both cohorts. Patients expressed high overall satisfaction., Conclusions: Substantial dimensional changes may be expected at the buccal aspect of single implants inserted in the premaxilla. As a result, contour augmentation procedures at the time of implant placement should be considered to counteract these bone alterations, even when implants are fully embedded in bone upon insertion., (© 2018 Wiley Periodicals, Inc.)
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- 2018
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28. Clinical Outcome After 8 to 10 Years of Immediately Restored Single Implants Placed in Extraction Sockets and Healed Ridges.
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Raes S, Cosyn J, Noyelle A, Raes F, and De Bruyn H
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- Adult, Aged, Female, Humans, Male, Middle Aged, Time Factors, Treatment Outcome, Young Adult, Alveolar Process surgery, Dental Implants, Single-Tooth, Immediate Dental Implant Loading methods, Tooth Socket surgery
- Abstract
Recent systematic reviews point to the scarcity of single implants followed up longer than 5 years, and the incidence of biologic/technical complications is underreported. This prospective follow-up study documents 8- to 10-year clinical outcomes of immediately restored single implants in extraction sockets (immediate implant treatment [IIT]) and healed bone (conventional implant treatment [CIT]). Patients received a single, chemically modified, moderately rough titanium implant and a provisional crown on the day of surgery in the anterior maxilla (second premolar to second premolar). Provisional crowns were replaced by permanent crowns after 10 weeks. Implant survival, complications, crestal bone changes, plaque score, probing depth, and bleeding on probing were regularly recorded up to 10 years of follow-up. Of 16 patients who underwent IIT, 11 could be evaluated after 8 years. Of the 23 patients who received an implant in healed bone, 18 were finally evaluated. One implant failed in the IIT group at 12 weeks; all implants survived in the CIT group; 38% of the patients experienced at least one complication; 10% had one or more biologic complications, whereas 31% experienced one or more technical complications. There were no significant changes in crestal bone level from 1 to ≥ 8 years of follow-up for either group or between IIT and CIT at any time point (P ≥ .129). Only 6.9% (2 of 29) implants demonstrated progressive bone loss > 2 mm combined with pockets ≥ 6 mm. Immediately restored single implants in extraction sockets and healed ridges demonstrate good long-term outcomes in terms of implant survival, crestal bone loss, and peri-implant health. However, biologic and especially technical complications are common.
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- 2018
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29. Oral health-related quality of life changes after placement of immediately loaded single implants in healed alveolar ridges or extraction sockets: a 5-year prospective follow-up study.
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Raes S, Raes F, Cooper L, Giner Tarrida L, Vervaeke S, Cosyn J, and De Bruyn H
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- Adolescent, Adult, Aged, Female, Follow-Up Studies, Humans, Male, Middle Aged, Surveys and Questionnaires, Young Adult, Dental Implants, Single-Tooth, Immediate Dental Implant Loading, Oral Health, Quality of Life
- Abstract
Objectives: The impact of single implants on oral health-related quality of life (OHRQoL) is scarcely investigated, especially when combined with immediate placement and loading in extraction sockets. The aim was to describe prospectively the changes of OHRQoL with single implants placed in the esthetic zone in healed ridges or in extraction sockets after 5 years., Material and Methods: Ninety-six patients, enrolled at three clinical centers, received 102 single implants placed in a healed ridge (n = 54 implants/50 patients) or in extraction sockets (n = 48 implants/46 patients). Implants were immediately provisionalized, and permanent crowns were cemented after 12 weeks. Oral health impact profile questionnaires (OHIP-14) were completed before surgery, after 1 (provisional crown), 6 (permanent crown), 12 and 60 months, respectively. The overall OHIP-14 score pertains to seven domains with two items each and was assessed on a Likert scale of 0-4 (0 = never and 4 = very often). The evolution of the total OHIP-14 score and changes within all OHIP domains over time and between groups were assessed with a linear mixed-effect model analysis., Results: After 5 years, overall implant survival was 98%. The total OHIP-14 score for both groups combined decreased from 0.50 at baseline to 0.17 at 6 months (P < 0.001), indicative of improvement. For both groups, this remained stable up to 5 years (P = 0.41). However, after 5 years, the total OHIP-14 score revealed a statistically significantly higher improvement in the healed group compared with the extraction group (P = 0.027)., Conclusion: Missing a single tooth in the maxillary esthetic zone leads to limited OHRQoL problems as reflected by a low overall OHIP score. However, OHRQoL improves less in the extraction group, reflecting that replacing a missing tooth is perceived as more beneficial than replacing a present tooth., (© 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
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- 2017
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30. Multicenter Clinical Randomized Controlled Trial Evaluation of an Implant System Designed for Enhanced Primary Stability.
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Stanford CM, Barwacz C, Raes S, De Bruyn H, Cecchinato D, Bittner N, and Brandt J
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- Adult, Aged, Alveolar Bone Loss diagnostic imaging, Alveolar Bone Loss etiology, Bicuspid surgery, Female, Humans, Male, Maxilla surgery, Middle Aged, Torque, Young Adult, Dental Implantation, Endosseous methods, Dental Prosthesis Retention standards, Dental Prosthesis, Implant-Supported, Immediate Dental Implant Loading methods, Jaw, Edentulous, Partially rehabilitation
- Abstract
Purpose: This intention-to-treat (ITT) non-inferiority multicenter study was performed to evaluate implant system design, surgical and prosthetic aspects, and the effect on marginal bone levels of two related implant systems. Implant design alterations consisted of modifications in implant body shape and abutment connections. Drilling procedures and drill design were adapted to the implant design., Materials and Methods: Five clinics participated in this study; all had institutional review board approval. Two versions of the implant system were used: test and predicate. One hundred twenty partially dentate subjects with healed sites were randomized to either test or predicate implants. Fifty-nine subjects received 79 test implants and 61 received 87 predicate implants. Bone classification, insertion torque values (ITV), and the surgeon's perception of primary stability were recorded. Definitive restorations with a titanium abutment were made approximately 6 to 8 weeks following implant placement. All restorations were cement retained. Marginal bone levels were evaluated on radiographs at implant placement, at restoration, and at 6 and 12 months postloading., Results: Most subjects received one implant placed in the premolar or molar area (95% of sites). Fifty-three percent of the implants were placed in the maxilla. Median ITV at placement was 31 ± 13 Ncm for the test system and 22 ± 9 Ncm for predicate system, respectively. Time to loading was similar (test, 63.1 ± 24.8; predicate, 62.9 ± 26.9 days). Mean marginal bone loss 12 months after functional loading was 0.07 ± 0.73 mm in the test group and 0.03 ± 0.84 mm in the predicate group, with no statistically significant difference (P = .6895). Five implants were lost (four test, one predicate) from implant placement, all within the first 8 weeks following placement; none were restored. The 1-year postloading cumulative implant survival rate was 94.9% (73 implants at risk) for the test system and 98.9% (84 implants at risk) for the predicate system., Conclusion: Treatment with the test implant system, utilizing its bone classification for guidance regarding drilling protocol, resulted in enhanced implant stability. Marginal bone levels were stable 12 months after functional loading.
- Published
- 2016
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31. The current use of patient-centered/reported outcomes in implant dentistry: a systematic review.
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De Bruyn H, Raes S, Matthys C, and Cosyn J
- Subjects
- Humans, Dental Implantation, Endosseous, Dental Prosthesis, Implant-Supported, Jaw, Edentulous rehabilitation, Patient Outcome Assessment
- Abstract
Aim: To provide an update on the use of Patient-Reported Outcome Measures (PROMs) in the field of implant dentistry (1); to compare PROMs for prostheses supported by one or more implants to alternative treatment options or a healthy dentition (2)., Materials and Methods: The dental literature was searched on PubMed until December 31, 2014, using a general search algorithm. An overall quantitative analysis was performed, and a qualitative appraisal was made on the output of the last 6 years. Per type of edentulism and prosthetic treatment, the general search algorithm was refined in order to select controlled studies comparing PROMs for prostheses supported by one or more implants to alternative treatment options or a healthy dentition., Results: With nearly half of the output (300 of 635) published in the last 6 years, there is a growing interest in PROMs by the scientific community. When scrutinizing the 300 most recent publications, only 84 controlled studies could be identified among which 38 RCTs and 31 cohort studies. An "ad hoc" approach is commonly employed using non-standardized questions and different scoring methods, which may compromise validity and reliability. Overall, 39 eligible papers related to fully edentulous patients treated with an implant overdenture (IOD) and 9 to fully edentulous patients treated with a fixed implant prosthesis (FIP). There is plenty of evidence from well-controlled studies showing that fully edentulous patients in the mandible experience higher satisfaction with an IOD when compared to a conventional denture (CD). This may not hold true for fully edentulous patients in the maxilla. In general, fully edentulous patients seem to opt for a fixed or removable rehabilitation on implants for specific reasons. Data pertaining to partially edentulous patients were limited (FIP: n = 6; single implants: n = 16). In these patients, the timing of implant placement does not seem to affect patient satisfaction. Patients seem to prefer straightforward implant surgery over complex surgery that includes bone grafting., Conclusion: There is an urgent need for standardized reporting of PROMs in the field of implant dentistry. Fully edentulous patients in the mandible experience higher satisfaction with an IOD when compared to a CD. All other types of prostheses have been underexposed to research., (© 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
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- 2015
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32. A prospective cohort study on the impact of smoking on soft tissue alterations around single implants.
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Raes S, Rocci A, Raes F, Cooper L, De Bruyn H, and Cosyn J
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- Adult, Crowns, Female, Humans, Male, Middle Aged, Prospective Studies, Dental Implants, Single-Tooth, Dental Papilla drug effects, Dental Papilla pathology, Smoking adverse effects, Soft Tissue Injuries chemically induced
- Abstract
Objectives: To compare smokers to non-smokers in terms of soft tissue alterations following single implant treatment in healed bone., Material and Methods: Non-smoking and smoking patients with sufficient bone volume in need of a single implant in the anterior maxilla (15-25) were consecutively recruited in three centres. Conventional single implant surgery was performed and an immediate provisional crown was installed. Eight to 12 weeks later, the latter was replaced by a permanent one (baseline). Papilla regrowth and midfacial recession was registered after 2 years of function., Results: The sample consisted of 39 non-smokers (21 females; mean age 42) and 46 smokers (22 females; mean age 45). Smokers had three early failures, whereas all implants integrated successfully in non-smokers. Statistically significant papilla regrowth was observed in non-smokers (distal 0.63 mm, mesial 0.76 mm), whereas smokers showed stable papillae (between cohorts: P ≤ 0.025). Midfacial soft tissue level demonstrated statistically significant regrowth in non-smokers (0.53 mm), whereas it remained stable in smokers (between cohorts: P = 0.004)., Conclusion: Smokers failed to demonstrate papilla regeneration and showed more midfacial recession following single implant treatment when compared to non-smokers., (© 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
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- 2015
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33. Immediate loading in partially and completely edentulous jaws: a review of the literature with clinical guidelines.
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De Bruyn H, Raes S, Ostman PO, and Cosyn J
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- Dental Implants, Dental Implants, Single-Tooth, Dental Prosthesis, Implant-Supported, Denture, Overlay, Humans, Jaw, Edentulous surgery, Jaw, Edentulous, Partially surgery, Mandible pathology, Maxilla pathology, Patient Satisfaction, Survival Analysis, Treatment Outcome, Immediate Dental Implant Loading, Jaw, Edentulous rehabilitation, Jaw, Edentulous, Partially rehabilitation
- Abstract
The introduction of immediate loading was a paradigm shift in implant dentistry as it was previously believed that an unloaded period was essential for bone healing in order to promote osseointegration. However, this belief could not be confirmed by clinical studies or by human histology. Hitherto, numerous reports have been published on immediate loading in various indications. An important factor for success is primary implant stability. The latter can be improved by adapting drilling protocols to enhance lateral compression of the bone and by using tapered implant designs with apical thread fixation. To some extent, the use of implants with a microrough surface and rigid splinting may compensate for suboptimal stability. It is important to avoid fracture of the provisional restoration at all times as this may result in local overloading and implant failure. Also, unevenly distributed occlusal contacts may contribute to failure and therefore occlusion ought to be evaluated at every occasion, especially during the early phase of healing. Taking these aspects into account, immediate loading in the fully edentulous mandible by means of an overdenture has been shown to be predictable in terms of implant survival (94.4-100%). However, the procedure may result in additional costs as a result of the need for repeated relining. In addition, the scientific basis for this treatment concept in the maxilla is very scarce. Immediate loading in the fully edentulous jaw by means of a fixed prosthesis is a well-documented treatment concept. In the mandible, three implants have been shown to be insufficient, given the failure rate of up to 10%. With at least four implants a failure rate of 0-3.3% may be expected. In the maxilla, four to six implants could be too limited, given the failure rate up to 7.2%. Increasing the number of implants may reduce implant failure to 3.3%. Provisional fixed prostheses are particularly prone to fracture in the maxilla and hence reinforcement is warranted. Immediately loaded single implants have lower survival rates, of 85.7-100%, with no clear impact of occlusal contact. In fact, a meta-analysis demonstrated a five times higher risk of failure for immediately loaded single implants when compared with delayed loading. No study showed superior soft-tissue preservation or esthetics following immediate loading of single implants compared with other loading protocols. However, this finding may not imply that a provisional implant crown becomes redundant when soft-tissue conditioning is deemed necessary. Taking into account earlier factors for success, immediate loading in the partially edentulous jaw by means of a fixed prosthesis seems predictable in terms of implant survival (95.5-100%). However, there are no studies with data on soft-tissue parameters, esthetic aspects or patient-centered outcomes, and the available studies mainly relate to the load-carrying part of the dentition. Clinical studies focusing on these aspects of treatment outcome are clearly needed. High patient satisfaction is the most important advantage of immediate loading, especially during the early healing phase. In this context, one should also realize that studies have revealed comparable patient satisfaction in patients following delayed loading once their prosthesis is in place. In the decision-making process, this aspect should be properly discussed with the patient along with other advantages and disadvantages of immediate loading., (© 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2014
- Full Text
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34. An analysis of the decision-making process for single implant treatment in general practice.
- Author
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Cosyn J, Raes S, De Meyer S, Raes F, Buyl R, Coomans D, and De Bruyn H
- Subjects
- Adult, Aged, Dental Restoration, Permanent methods, Dental Restoration, Permanent statistics & numerical data, Denture, Partial statistics & numerical data, Female, Humans, Male, Middle Aged, Patient Care Planning, Tooth Extraction, Young Adult, Decision Making, Dental Implants, Single-Tooth statistics & numerical data, General Practice, Dental statistics & numerical data, Jaw, Edentulous, Partially rehabilitation, Practice Patterns, Dentists' statistics & numerical data
- Abstract
Purpose: To study the frequency of and factors associated with the decision to perform single implant treatment after tooth extraction by general practitioners in a private, fee-for-service setting., Material and Methods: One hundred practitioners with a general dental practice in Ghent were randomly selected. Clinicians were asked to fill in a study form for every single extraction they performed during an 8-week period. The form related to the treatment decision and a number of patient- and clinician-related factors., Results: Ninety-four general dentists (52 men, 42 women; mean age 49; range 24-68) agreed to participate and extracted 1180 single teeth. After exclusion of third molars and cases where the reason for tooth loss would generally prohibit replacement, 900 cases were identified. In 24% of these patients, there was no treatment decision and in 18% replacement was deemed unnecessary. When replacement was necessary (n = 526), removable partial denture (RPD), fixed partial denture (FPD), single implant treatment and resin-bonded bridge were chosen in 54%, 24%, 21% and 1% of the patients, respectively. Multinomial logistic regression was used to evaluate the decision-making process for single implant treatment against RPD and FPD. In relation to RPD, single implant treatment was more likely in highly educated patients with few missing teeth and no bone loss at adjacent teeth. In relation to FPD, single implant treatment was more likely in patients with intact adjacent teeth and when the tooth was extracted by a female dentist. Experience in implant prosthetics was positively associated with single implant treatment in all analyses., Conclusions: Single implant treatment is not the most common procedure in daily practice to restore a single tooth gap. Patient's education, oral factors and clinician-related factors may affect the decision-making process, whereas medical factors may not., (© 2011 John Wiley & Sons A/S.)
- Published
- 2012
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35. Inverse expression of peroxisomes and connexin-43 in the granulosa cells of the quail follicle.
- Author
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Farioli-Vecchioli S, Raes S, Espeel M, Roels F, and D'Herde K
- Subjects
- Animals, Catalase metabolism, Cells, Cultured, Coculture Techniques, Coturnix, Female, Fluorescent Antibody Technique, Indirect, Gap Junctions drug effects, Glycyrrhetinic Acid pharmacology, Granulosa Cells drug effects, Granulosa Cells enzymology, Microscopy, Electron, Octanols pharmacology, Peroxisomes enzymology, Time Factors, Connexin 43 biosynthesis, Gap Junctions metabolism, Granulosa Cells metabolism, Granulosa Cells ultrastructure, Peroxisomes metabolism
- Abstract
Studying the regulation of peroxisome (Px) expression could improve our understanding of human peroxisomal disorders. The granulosa of the largest preovulatory quail follicles proved to be a relevant model because (a) Px expression changes according to the follicular maturation stage and (b) Px expression varies regionally according to the distance of the granulosa relative to the germinal disc region containing the female gamete (oocyte). The question was asked whether Px expression is related to the extent of metabolic cell coupling and whether zonal Px variation is causally related to oocytal factors. This was evaluated by the presence of catalase and Cx-43 (marker proteins for peroxisomes and gap junctions, respectively) and by in vitro experiments with granulosa explants. The data obtained show that the expression of Cx-43 and Px is inversely correlated both temporally and spatially. Uncoupling of gap junctions results in an upregulation of alpha-catalase immunofluorescence. This is in agreement with reports that gap junctions are often negatively affected by Px proliferators. The zonal gradient in Px expression appears to be imposed by the oocyte, as is the case for steroidogenesis and proliferative capacity in the granulosa epithelium. (J Histochem Cytochem 48:167-177, 2000)
- Published
- 2000
- Full Text
- View/download PDF
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