Long-term Survival Rates of Implants Supporting Overdentures

2015 ◽  
Vol 41 (2) ◽  
pp. 173-177 ◽  
Author(s):  
José Balaguer ◽  
Javier Ata-Ali ◽  
David Peñarrocha-Oltra ◽  
Berta García ◽  
María Peñarrocha-Diago
Keyword(s):  
Survival Rate ◽  
Survival Rates ◽  
Long Term Results ◽  
Dental Arch ◽  
Term Survival ◽  
Lower Survival Rate ◽  
Significant Difference ◽  
A Prospective Study

The study aims were to evaluate survival rates of dental implants in patients wearing maxillary and mandibular overdentures in relation to age, sex, smoking, implant splinting or non-splinting, the maxilla rehabilitated, and number of implants per dental arch. This was a prospective study of patients who were completely edentulous in either mandible or maxilla or both, rehabilitated with implant-retained overdentures, with a follow-up of at least 3 years. 95 patients with 107 overdentures were supported by 360 implants were included in the study. Rehabilitations were monitored over an average of 95 ± 20.3 months (range 36–159). Implant survival in the maxilla was 91.9% and in the mandible 98.6%, representing a statistically significant difference (P < .05). Age, sex and implant splinting did not influence survival rates significantly. Smokers presented a lower survival rate. Implant numbers in the maxilla had a significant influence on survival, 100% for 6 but 85.7% for 4. Three mandibular implants achieved higher survival rates (100%) but with 2 (96.6%) or 4 (99%) survival was lower, although without significant difference. Long-term results suggest that 3-implant mandibular overdentures have an equivalent survival rate to 4-implant overdentures. In the maxilla, results showed that 6 implants may be the best treatment strategy. For smokers with fewer implants retaining the overdentures, there were higher numbers of implant failures.

Should adult medulloblastoma patients at low risk receive adjuvant chemotherapy? Long-term results of a prospective study

2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 2018-2018
Author(s):  
E. Franceschi ◽  
A. Tosoni ◽  
M. Ermani ◽  
V. Blatt ◽  
P. Amistà ◽  
...  
Keyword(s):  
High Risk ◽  
Adjuvant Chemotherapy ◽  
Survival Rates ◽  
Low Risk ◽  
Long Term Results ◽  
High Risk Patients ◽  
Significant Difference ◽  
Risk Patients

2018 Background: Due to the rarity of medulloblastoma (MB) in adults, the few studies available on this condition are retrospective, and the follow-up tends to be short. Furthermore, the different therapeutic strategies used in these patients makes it difficult to assess survival rates and prognostic factors. Methods: Between January 1989 and February 2001, a prospective phase II trial was performed to evaluate the efficacy of treatment for adults with medulloblastoma. Patients were completely staged with a neuroradiological examination of the brain and neuraxis and by CSF cytology, according to Chang’s staging system. Low risk patients received radiotherapy alone, while high risk patients were given 2 cycles of upfront chemotherapy followed by radiotherapy and adjuvant chemotherapy. The results of the preliminary analysis of this study at a median follow-up of 3.7 years are reported elsewhere. The present papers reports on the long- term results of the same trial. Results: After a median follow up of 7.6 years, among a total of 36 enrolled adults with medulloblastoma, overall progression free survival (PFS) and overall survival (OS) at 5 years were 72% (range 59% to 84%) and 75% (62% to 91%), respectively. No difference was found between low and high risk patients in terms of PFS and OS at 5 years: in low-risk patients the 5-year PFS was 80% (range, 59–100%) and the 5-year OS, 80% (range, 58 - 100%); in high-risk patients the 5-year PFS was 69% (range, 54 -89%) and the 5-year OS, 73% (range, 58 - 92%). Conclusions: A long-term follow-up is essential to evaluate the real impact of treatments in adult patients with MB. Since there is no significant difference between low-risk and high-risk patients for PFS and OS, the use of chemotherapy is also questionable in low-risk patients. No significant financial relationships to disclose.

scholarly journals Results of Ten-Year Follow-Up of Alcohol Septal Ablation in Patients with Obstructive Hypertrophic Cardiomyopathy

2018 ◽  
Vol 27 (04) ◽  
pp. 202-207 ◽  
Author(s):  
Anastasiya Rzhannikova ◽  
Sergey Chernyshev ◽  
Lev Kardapoltsev ◽  
Eduard Idov ◽  
Sergey Berdnikov ◽  
...  
Keyword(s):  
Hypertrophic Cardiomyopathy ◽  
Survival Rates ◽  
Rank Test ◽  
Alcohol Septal Ablation ◽  
Term Survival ◽  
Significant Difference ◽  
Obstructive Hypertrophic Cardiomyopathy ◽  
Age And Sex

This study looks at 10-year follow-up outcomes of alcohol septal ablation in patients with obstructive hypertrophic cardiomyopathy.Between 2000 and 2008, 40 patients with obstructive hypertrophic cardiomyopathy (27 males, 13 females) underwent alcohol septal ablation. The median follow-up period was 123 (2–179) months. The mean age ran to 43.8 + 13.9 years. The initial dose of ethanol (3 mL) was chosen for ablation in all cases.The hospital mortality was 0%. Permanent pacemakers were implanted in 3 of 40 (7.5%) cases in the hospital period. The median clinical follow-up was 123 (2–179) months. Survival rates at 1, 5, 10, and 15 years after the procedure were as follows: 97.5% (95% confidence interval [CI], 95.1–99.9%), 92.5% (95% CI, 94.8–90.2%), 85.0% (95% CI, 82.9–87.1%), and 81.3% (95% CI, 79.3–83.3%), respectively. Seven patients died during follow-up. Sudden death was observed in two cases. Permanent pacemakers were implanted in 2 of 40 (5%) cases in the follow-up. The log-rank test revealed no statistically significant difference between the 15-year survival rate in our cohort and age- and sex-matched general Russian population (p = 0.11113).Alcohol septal ablation provides long-term survival rates that look comparable with age- and sex-matched general population in the 15-year follow-up period.

scholarly journals 12-Month Self-Ligating Bracket Failure Rate with a Self-Etching Primer

2008 ◽  
Vol 78 (6) ◽  
pp. 1095-1100 ◽  
Author(s):  
Selma Elekdag-Turk ◽  
Fethiye Cakmak ◽  
Devrim Isci ◽  
Tamer Turk
Keyword(s):  
Survival Rate ◽  
Clinical Performance ◽  
Survival Rates ◽  
Rank Test ◽  
Dental Arch ◽  
Bond Failure ◽  
Lower Survival Rate ◽  
Log Rank Test ◽  
Kaplan Meier ◽  
Significant Difference

Abstract Objective: To compare the clinical performance of a self-etching primer (SEP) with a conventional two-step etch and primer method (CM). Materials and Methods: Study subjects were 39 patients with a mean age of 15 years 7 months. Six hundred and eighty-eight brackets were bonded by one operator with a split-mouth design, using Transbond Plus Self-Etching Primer or a conventional two-step etch and primer (Transbond XT). The survival rate of the brackets was estimated by the Kaplan-Meier analysis. Bracket survival distributions with respect to bonding procedure, dental arch, type of tooth (incisor, canine, and premolar) and patients' gender were compared using the log-rank test. Bond failure interface was determined using the Adhesive Remnant Index (ARI). Results: The bond failure rates of SEP and CM were 4.7% and 1.7%, respectively. A significant difference was found between the bonding procedures using the log-rank test (P < .05). Furthermore, canine and premolar teeth displayed a lower survival rate than incisor teeth (P < .05). Survival rates did not show significant differences between the upper and lower dental arches and patients' gender (P > .05). No significant difference was observed for ARI scores (P > .05). Conclusion: These findings indicate that the SEP (Transbond Plus) can be effectively used to bond orthodontic brackets.

Prolonged prophylaxis against venous thromboembolism with enoxaparin in patients undergoing cancer surgery: long-term survival analysis

2006 ◽  
Vol 21 (4) ◽  
pp. 195-198 ◽  
Author(s):  
D Bergqvist ◽  
G Agnelli ◽  
A T Cohen ◽  
P E Nilsson ◽  
A Le Moigne-Amrani ◽  
...  
Keyword(s):  
Survival Rates ◽  
Palliative Surgery ◽  
Curative Surgery ◽  
Term Survival ◽  
Long Term Survival ◽  
Significant Difference ◽  
One Year ◽  
Type Of Surgery

Objective: ENOXACAN II was a randomized, double-blind trial that showed prolonged (four-week) thromboprophylaxis with enoxaparin to be more effective than and as safe as standard (one-week) thromboprophylaxis in patients undergoing surgery with a curative intent for abdominopelvic cancer. This follow-up study compared long-term, all-cause mortality in both groups. Methods: Survival rates were calculated on the randomized, treated population ( n = 501). The primary efficacy endpoint was survival at one year. An exploratory analysis including survival data up to 44 months was performed. Because some patients were deemed to have undergone palliative as opposed to curative surgery, and there was a significant difference between the treatment groups in the percentage of patients undergoing palliative surgery, the survival analyses were adjusted for the type of surgery performed. Results: When adjusted for type of surgery, there was a trend towards reduced mortality among patients undergoing palliative surgery in the prolonged prophylaxis group (hazard ratio [HR] = 0.598, P = 0.3565) that became more pronounced beyond the pre-specified one year follow-up period (HR = 0.469, P = 0.078). This trend may reflect a beneficial effect of prolonged prophylaxis on survival in the palliative surgery group (one-year survival 65.4 versus 50% for standard prophylaxis). In patients undergoing curative surgery, one-year survival rates were equal in the standard and prolonged prophylaxis groups (93.8 and 93.2%, respectively). Conclusion: Prolonged thromboprophylaxis with enoxaparin may affect long-term survival in palliative surgery for cancer, but further investigation is warranted.

Effect of streamer tags on survival and growth of juvenile tiger prawns, Penaeus monodon, under laboratory conditions

1992 ◽  
Vol 43 (4) ◽  
pp. 737 ◽  
Author(s):  
JH Primavera ◽  
RM Caballero
Keyword(s):  
Survival Rate ◽  
Survival Rates ◽  
Penaeus Monodon ◽  
Term Survival ◽  
Long Term Survival ◽  
Lower Survival Rate ◽  
Lower Survival ◽  
Laboratory Conditions ◽  
Survival And Growth

The effects of streamer tags and initial prawn size on survival and growth in 2-month- and 7-monthold pond-reared juveniles of Penaeus monodon Fabricius ( 1 1-30 mm carapace length, CL) were assessed under laboratory conditions. Tagging did not cause immediate mortality in juveniles of 11-21 mm CL within a one-week period but led to a significantly lower survival rate after 6 to 8 weeks in 1-m3 tanks. However, tagged prawns of 21-30 mm CL showed high long-term survival rates up to 90% in a 12-m3 tank. The 2-month-old juveniles had lower survival rates than 7-month-old prawns. Specific growth rate was not affected by tagging but was significantly higher in smaller prawns. In general, there was no interaction between the effects of tagging and prawn size in terms of growth and survival rates. The lower long-term survival rate associated with tags may be due to the attractiveness of tags to predators, or to trauma or stress caused by the weight of the tags. These factors are discussed in relation to findings for other penaeid species.

Implant survival rate in bone-anchored hearing aid users: long-term results

2011 ◽  
Vol 125 (11) ◽  
pp. 1131-1135 ◽  
Author(s):  
E Wallberg ◽  
G Granström ◽  
A Tjellström ◽  
J Stalfors
Keyword(s):  
Survival Rate ◽  
Hearing Aid ◽  
Long Term Results ◽  
Term Survival ◽  
Number Of Patients ◽  
High Incidence ◽  
Bone Anchored Hearing Aid ◽  
Prospective Database

AbstractObjective:To investigate the long-term survival rate of bone-anchored hearing aid implants, and to assess the number of patients who stop using their bone-anchored hearing aid.Method:Patients who underwent bone-anchored hearing aid surgery between September 1977 and December 1986 were identified from a prospective database. Data were collected from patient records.Results:During the study period, 143 patients were fitted with a bone-anchored hearing aid. Records from 132 patients were found, with a mean follow up of nine years. A total of 150 implants were installed in these patients. A total of 41 implants (27 per cent) were lost during follow up: 17 lost osseointegration, 16 were removed and eight were lost due to direct trauma. At the end of follow up, 119/132 (90 per cent) patients were still using their bone-anchored hearing aid.Conclusion:Despite a high incidence of implant loss over time, a large number of patients still continued to use their bone-anchored hearing aid.

scholarly journals Emergency Portasystemic Shunting in Cirrhotics With Bleeding Varices — A Comparison of Portacaval and Mesocaval Shunts

HPB Surgery ◽  
1989 ◽  
Vol 1 (2) ◽  
pp. 107-118 ◽  
Author(s):  
D. I. Soutter ◽  
B. Langer ◽  
B. R. Taylor ◽  
P. Greig
Keyword(s):  
Liver Disease ◽  
Survival Rates ◽  
Variceal Hemorrhage ◽  
Term Survival ◽  
Significant Difference ◽  
Surgeon Experience ◽  
Table Analysis ◽  
Lost To Follow Up

Despite the best conservative measures available for the control of major variceal hemorrhage, some patients either continue to bleed, or rebleed early, and require emergency surgery. One hundred patients with cirrhosis and uncontrolled bleeding were treated with emergency portasystemic shunts between 1968 and 1983. Fifty eight patients had end-to-side portacaval shunts and 42 had Dacron interposition mesocaval shunts. Both groups were comparable with respect to age, sex and prevalence of alcoholism. There was an increased severity of liver disease as assessed by Child's class in the mesocaval group of patients.Overall in-hospital mortality was 31% with no significant difference demonstrated between the mesocaval group (28%) and the portacaval group (33%), nor between alcoholic cirrhotics (34%) and non-alcoholic cirrhotics (21%). Mortality rates based on severity of liver disease were: Child's A (1/6) 17%, Child's B (9/48) 19%, and Child’s C (21/46) 46%. There was a statistically significant difference between Child's A & B and Child's C (p < 0.01). Four patients were lost to follow-up. No significant differences were found in 5 year survival by life table analysis comparing portacaval (39%) vs. mesocaval (28%) groups or alcoholic cirrhotics (36%) vs. non-alcoholic cirrhotics (29%). Encephalopathy in survivors was absent in 46%, mild in 28% and severe in 26% of patients. There was no significant difference in encephalopathy rates following portacaval or mesocaval shunting.Neither operation was clearly superior and choice of operation can be made on the basis of technical and anatomical factors and surgeon experience. Emergency shunting remains a useful option for patients with variceal bleeding refractory to other more conservative therapy, and is associated with acceptable early mortality and long term survival rates.

Surgical reconstruction for unilateral iliac artery lesions in patients younger than 50 years

VASA ◽  
2011 ◽  
Vol 40 (6) ◽  
pp. 474-481 ◽  
Author(s):  
Radak ◽  
Babic ◽  
Ilijevski ◽  
Jocic ◽  
Aleksic ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Limb Salvage ◽  
Iliac Artery ◽  
Graft Patency ◽  
Long Term Results ◽  
Surgical Reconstruction ◽  
Safe Procedure ◽  
Term Survival

Background: To evaluate safety, short and long-term graft patency, clinical success rates, and factors associated with patency, limb salvage and mortality after surgical reconstruction in patients younger than 50 years of age who had undergone unilateral iliac artery bypass surgery. Patients and methods: From January 2000 to January 2010, 65 consecutive reconstructive vascular operations were performed in 22 women and 43 men of age < 50 years with unilateral iliac atherosclerotic lesions and claudication or chronic limb ischemia. All patients were followed at 1, 3, 6, and 12 months after surgery and every 6 months thereafter. Results: There was in-hospital vascular graft thrombosis in four (6.1 %) patients. No in-hospital deaths occurred. Median follow-up was 49.6 ± 33 months. Primary patency rates at 1-, 3-, 5-, and 10-year were 92.2 %, 85.6 %, 73.6 %, and 56.5 %, respectively. Seven patients passed away during follow-up of which four patients due to coronary artery disease, two patients due to cerebrovascular disease and one patient due to malignancy. Limb salvage rate after 1-, 3-, 5-, and 10-year follow-up was 100 %, 100 %, 96.3 %, and 91.2 %, respectively. Cox regression analysis including age, sex, risk factors for vascular disease, indication for treatment, preoperative ABI, lesion length, graft diameter and type of pre-procedural lesion (stenosis/occlusion), showed that only age (beta - 0.281, expected beta 0.755, p = 0.007) and presence of diabetes mellitus during index surgery (beta - 1.292, expected beta 0.275, p = 0.026) were found to be significant predictors of diminishing graft patency during the follow-up. Presence of diabetes mellitus during index surgery (beta - 1.246, expected beta 0.291, p = 0.034) was the only variable predicting mortality. Conclusions: Surgical treatment for unilateral iliac lesions in patients with premature atherosclerosis is a safe procedure with a low operative risk and acceptable long-term results. Diabetes mellitus and age at index surgery are predictive for low graft patency. Presence of diabetes is associated with decreased long-term survival.

Transapical versus Conventional Aortic Valve Replacement�A Propensity-Matched Comparison

2012 ◽  
Vol 15 (1) ◽  
pp. 4 ◽  
Author(s):  
David M. Holzhey ◽  
William Shi ◽  
A. Rastan ◽  
Michael A. Borger ◽  
Martin H�nsig ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Survival Rates ◽  
Long Term Results ◽  
Term Survival ◽  
Kaplan Meier ◽  
Risk Patients ◽  
Short And Long Term ◽  
Good Treatment Option ◽  
Matched Comparison

<p><b>Introduction:</b> The goal of this study was to compare the short- and long-term outcomes after aortic valve (AV) surgery carried out via standard sternotomy/partial sternotomy versus transapical transcatheter AV implantation (taTAVI).</p><p><b>Patients and Methods:</b> All 336 patients who underwent taTAVI between 2006 and 2010 were compared with 4533 patients who underwent conventional AV replacement (AVR) operations between 2001 and 2010. Using propensity score matching, we identified and consecutively compared 2 very similar groups of 167 patients each. The focus was on periprocedural complications and long-term survival.</p><p><b>Results:</b> The 30-day mortality rate was 10.8% and 8.4% (<i>P</i> = .56) for the conventional AVR patients and the TAVI patients, respectively. The percentages of postoperative pacemaker implantations (15.0% versus 6.0%, <i>P</i> = .017) and cases of renal failure requiring dialysis (25.7% versus 12.6%, <i>P</i> = .004) were higher in the TAVI group. Kaplan-Meier curves diverged after half a year in favor of conventional surgery. The estimated 3-year survival rates were 53.5% � 5.7% (TAVI) and 66.7% � 0.2% (conventional AVR).</p><p><b>Conclusion:</b> Our study shows that even with all the latest successes in catheter-based AV implantation, the conventional surgical approach is still a very good treatment option with excellent long-term results, even for older, high-risk patients.</p>

scholarly journals Minimum 10-Year Clinical Outcome of Lateral Collagen Meniscal Implants for the Replacement of Partial Lateral Meniscal Defects: Further Results From a Prospective Multicenter Study

2021 ◽  
Vol 9 (5) ◽  
pp. 232596712199491
Author(s):  
Alberto Grassi ◽  
Gian Andrea Lucidi ◽  
Giuseppe Filardo ◽  
Piero Agostinone ◽  
Luca Macchiarola ◽  
...  
Keyword(s):  
Survival Rate ◽  
Case Series ◽  
Final Analysis ◽  
Activity Level ◽  
Long Term Results ◽  
Level Of Evidence ◽  
Unicompartmental Knee Arthroplasties ◽  
Tegner Score

Background: The collagen meniscal implant (CMI) is a biologic scaffold aimed at replacing partial meniscal defects. The long-term results of lateral meniscal replacement have never been investigated. Purpose: To document the clinical outcomes and failures of lateral CMI implantation for partial lateral meniscal defect at a minimum 10-year follow-up. Study Design: Case series; Level of evidence, 4, Methods: This study included 24 consecutive patients who underwent lateral CMI implantation for partial lateral meniscal defects between April 2006 and September 2009 and who were part of a previous study with a 2-year follow-up. Outcome measures at the latest follow-up included the Lysholm score, Knee injury and Osteoarthritis Outcome Score, visual analog scale (VAS) for pain, Tegner activity level, and EuroQol 5-Dimensions score. Data regarding complications and failures were collected, and patients were asked about their satisfaction with the procedure. Results: Included in the final analysis were 19 patients (16 male, 3 female) with a mean age at surgery of 37.1 ± 12.6 years and a mean follow-up of 12.4 ± 1.5 years (range, 10-14 years). Five failures (26%) were reported: 1 CMI removal because of implant breakage and 4 joint replacements (2 unicompartmental knee arthroplasties and 2 total knee arthroplasties). The implant survival rate was 96% at 2 years, 85% at 5 years, 85% at 10 years, 77% at 12 years, and 64% at 14 years. Lysholm scores at the final follow-up were rated as “excellent” in 36% (5 of 14 nonfailures), “good” in 43% (6 of 14), and “fair” in 21% (3 of 14). The VAS score was 3.1 ± 3.1, with only 16% (3 of 19 patients) reporting that they were pain-free; the median Tegner score was 3 (interquartile range, 2-5). All clinical scores decreased from the 2-year follow-up; however, with the exception of the Tegner score, they remained significantly higher compared with the preoperative status. Overall, 79% of patients were willing to undergo the same procedure. Conclusion: Lateral CMI implantation for partial lateral meniscal defects provided good long-term results, with a 10-year survival rate of 85% and a 14-year survival rate of 64%. At the final follow-up, 58% of the patients had “good” or “excellent” Lysholm scores. However, there was a general decrease in outcome scores between the short- and the long-term follow-up.

Sign in / Sign up

Export Citation Format

Share Document