| 1. |
- Jemt, Torsten, 1950, et al.
(författare)
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Patterns of Mortality in Patients Treated with Dental Implants: A Comparison of Patient Age Groups and Corresponding Reference Populations
- 2015
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Ingår i: International Journal of Prosthodontics. - : Quintessence Publishing. - 0893-2174. ; 28:6, s. 569-576
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: Little is known about the relationship between implant patient mortality compared to reference populations. The aim of this study was to report the mortality pattern in patients treated with dental implants up to a 15-year period, and to compare this to mortality in reference populations with regard to age at surgery, sex, and degree of tooth loss. Materials and Methods: Patient cumulative survival rate (CSR) was calculated for a total of 4,231 treated implant patients from a single clinic. Information was based on surgical registers in the clinic and the National Population Register in Sweden. Patients were arranged into age groups of 10 years, and CSR was compared to that of the reference population of comparable age and reported in relation to age at surgery, sex, and type of jaw/dentition. Results: A similar, consistent, general relationship between CSR of different age groups of implant patients and reference populations could be observed for all parameters studied. Completely edentulous patients presented higher mortality than partially edentulous patients (P < .05). Furthermore, implant patients in younger age groups showed mortality similar to or higher than reference populations, while older patient age groups showed increasingly lower mortality than comparable reference populations for edentulous and partially edentulous patients (P < .05). Conclusion: A consistent pattern of mortality in different age groups of patients compared to reference populations was observed, indicating higher patient mortality in younger age groups and lower in older groups. The reported pattern is not assumed to be related to implant treatment per se, but is assumed to reflect the variation in general health of a selected subgroup of treated implant patients compared to the reference population in different age groups.
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| 2. |
- Kowar, Jan, 1972, et al.
(författare)
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Fixed Implant-Supported Prostheses in Elderly Patients: A 5-Year Retrospective Comparison between Partially and Completely Edentulous Patients Aged 80 Years or Older at Implant Surgery.
- 2013
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Ingår i: Clinical implant dentistry and related research. - : Wiley. - 1708-8208 .- 1523-0899. ; 15:1, s. 37-46
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Tidskriftsartikel (refereegranskat)abstract
- Background: Knowledge on implant treatment in the partially edentulous patient is low for elderly patients aged 80 years or older at inclusion. Purpose: The objective of this study was to report and compare the clinical and radiological performance of implant treatment in edentulous and partially edentulous elderly patients during 5 years in function. Material and Methods: Altogether, 192 edentulous (control) and 72 partially edentulous (study) patients, consecutively treated and provided with 1,091 and 265 Brånemark implants, respectively, were included during a period between January 1986 and December 2003, and followed-up for 5 years. Clinical information was retrospectively retrieved from patient files and intraoral radiographs were analyzed for examinations at prosthesis placement and after 1 and 5 years in function. Results: Altogether, 92 (48%) control and 24 (33%) study patients were lost to follow-up during the 5-year period. In total, 13 (4.9%) and 26 (2.4%) implants were in the study and control groups, respectively, were lost during follow-up, resulting in a comparable 5-year implant cumulative survival rate ranging from 93.9% to 99.3% for upper and lower jaws for study and control groups, respectively. Comparable mean marginal bone loss during 5 years, ranging from 0.4mm to 0.6mm, was also observed in the groups. The most common complications for patients in both study and control group were soft tissue inflammation (mucositis). Patients included in the first years of the inclusion (1986-1991) period showed comparable results as patient included at the last part of the inclusion period (1998-2003). Conclusions: Implant treatment in the partially edentulous elderly patients showed comparable clinical and radiographic results as elderly patients treated in the edentulous jaw.
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| 3. |
- Kowar, Jan, 1972, et al.
(författare)
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Long-term performance of implants with moderately rough anodized surface supporting single-tooth restorations: A retrospective analysis with an up to 15-year follow-up
- 2023
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Ingår i: Clinical Oral Implants Research. - : Wiley. - 0905-7161 .- 1600-0501. ; 34:4, s. 367-377
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Tidskriftsartikel (refereegranskat)abstract
- ObjectivesThis retrospective study aimed to evaluate long-term clinical and radiologic performance of anodized surface implants supporting single implant restorations. Materials and MethodsPatients who received at least one anodized surface implant for a single-tooth restoration between 2003 and 2004 in the Branemark clinic (Goteborg, Sweden) were included in the study. The assessed outcomes included implant survival, biological and technical complications, as well as marginal bone levels (MBL) based on radiographs. Baseline data on patient demographics, implant placement, and surgery details were also collected. The cumulative survival rate (CSR) was calculated using the Kaplan-Meier survival analysis. ResultsThe study included 97 patients with 129 implants. Mean patient age at the time of implant placement was 31.7 +/- 16.4 years. All implants were placed in a two-stage approach with delayed loading. The last follow-up visit was on average 13.4 +/- 4.8 years after implant insertion. Three implants failed, yielding the implant-level 15-year CSR of 97.4%. Majority of the implants had no biological (70.5%) nor technical (81.4%) complications. The mean MBL was -1.0 +/- 0.7 mm (n = 101) at prosthetic placement and -1.8 +/- 1.0 mm (n = 80) at the last follow-up, while the mean marginal bone loss (MBL) from prosthetic placement to last follow-up was 0.6 +/- 1.1 mm (n = 65). ConclusionsModerately rough anodized implants have shown favorable long-term outcomessingle-tooth indication, with high survival and a low rate of technical complications. Furthermore, long-term studies are needed to present longitudinal data on peri-implantitis.
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| 4. |
- Kowar, Jan, 1972, et al.
(författare)
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Mortality patterns in partially edentulous and edentulous elderly patients treated with dental implants.
- 2014
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Ingår i: The International journal of prosthodontics. - : Quintessence Publishing. - 0893-2174. ; 27:3, s. 250-6
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Tidskriftsartikel (refereegranskat)abstract
- An association between oral health, number of teeth, and mortality has been reported in the literature, but limited knowledge is available on mortality in elderly partially edentulous and edentulous patients treated with implants.The aim of this retrospective study was to compare the mortality pattern in elderly patients (80 years or older) who were provided with implants and were partially or completely edentulous.Between 1986 and 2003, a total of 266 elderly patients with a mean age of 83.0 years at the time of implant placement were included. The patients were provided with 1,384 Brånemark System implants (Nobel Biocare) in 285 arches. The sample was divided into two subgroups: 108 edentulous patients and 158 partially edentulous patients. Information was collected for each individual regarding expected remaining lifetime at the time of implant surgery. Cumulative survival rate (CSR) was calculated and compared for the two subgroups covering 10 years and was also compared to expected CSR data for normal populations of comparable distribution.Mortality was significantly decreased (P < .05) for partially edentulous compared with edentulous patients (-10.4%) after 10 years of follow-up. CSR for the elderly groups showed a significant decrease in mortality compared with comparable groups of normal populations (P < .05). There was no significant difference in morality between healthy/nonhealthy patients at first surgery or patients with reported/unreported implant failures (P > .05).Elderly partially edentulous patients had significantly lower mortality compared with edentulous patients over a 10-year period of follow-up. Both subgroups also showed significantly lower mortality compared with normal populations of comparable sex and age at the time of implant surgery. The observation is interpreted as that these patients are healthier and more motivated to replace their lost teeth with implants than the normal population rather than that implant treatment per se reduces mortality.
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| 5. |
- Kowar, Jan, 1972
(författare)
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On the mortality of patients treated with dental implants: Association to age, degree of tooth loss, and treatment modality
- 2020
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Rehabilitation of partially or completely edentulous patients with implant-supported prostheses is a common treatment in dentistry. Clinical studies evaluating this type of treatment have largely focused on technical and biolog-ical complications. To date, only a few studies have investigated the survival of edentulous patients and the possible effects of prosthetic treatments and age at time of edentulism. The overall aim of this thesis was to analyse the mortality of partially or completely edentulous patients in different age groups treated with implant-supported prostheses. The mortality of a large group of patients who were either treated at the Brånemark clinic, Region Västra Götaland (I-III), or in other parts of Sweden (IV) was studied with regard to degree of tooth loss and compared with a reference population matched for age and gender. Comparisons of mor-tality were performed on the basis of the treatment modality in relation to the degree of tooth loss (I, II) and between two treatments f0r edentulous patients (IV). Causes of death, as described by ICD10, were analysed in the edentulous patients and compared with the expected frequency of death cause in a reference population (III). The patients’ socio-economic situation was extracted from Statistics Sweden and the implant and denture groups were compared (IV). The results indicated that completely edentulous patients had a higher mor-tality compared to partially edentulous individuals. Compared to a matched reference population, elderly patients (≥80 years) treated with implant-supported prostheses had lower mortality and younger edentulous patients (≤59 years) had higher mortality. A majority of the patients died due to diseas-es in the circulatory system (CVD) and the incidence of CVD-related deaths was highest in the younger patient group. Patients treated with implant-supported prostheses had, in general, a lower ten-year mortality rate compared to patients who received a removable denture irrespective of socioeconomic status. In Sweden, edentulous patients, especially younger patients, belong to a special group of dentistry patients. As these patients often have poor general health, they should receive special attention. Although this thesis does not assume being treated with implant-supported prothesis per se causes lower mortality, the thesis does assume it contributes to better nutrition, improved masticatory function, and an increased quality of life.
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