| 1. |
- Gülcan, Ferda, et al.
(författare)
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Exploring the association of dental care utilization with oral impacts on daily performances (OIDP) : a prospective study of ageing people in Norway and Sweden
- 2018
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Ingår i: Acta Odontologica Scandinavica. - : Taylor & Francis. - 0001-6357 .- 1502-3850. ; 76:1, s. 21-29
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVES: To explore the association of dental health care utilization with oral impacts on daily performances (OIDP) across time focusing ageing Norwegian and Swedish adults adjusting for predisposing, enabling, and need related-factors as defined by Andersen's model.METHODS: Data were based on Norwegian and Swedish 1942 birth-cohorts conducted in 2007 (age 65) and 2012 (age 70). In Norway, the response rates ranged from 54% to 58%. Corresponding figures in Sweden were from 72% to 73%. Self-administered questionnaires assessed OIDP, dental care utilization and predisposing, enabling and need related factors. Logistic regression with robust variance estimation was used to adjust for clustering in repeated data.RESULTS: Significant covariates of OIDP were satisfaction with dental services, dental care avoidance due to financial constraints, frightening experience with dental care during childhood and patient initiated dental visiting. Frequency and regularity of dental attendance were associated with OIDP in the Swedish cohort, only.CONCLUSIONS: In spite of country differences in the public co-financing of dental care, dental care utilization indicators were associated with OIDP across time in both cohorts. Encouraging regular and dentist initiated visiting patterns and strengthening beliefs in keeping own teeth could be useful in attempts to reduce poor oral health related quality of life in ageing people.
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| 2. |
- Gülcan, Ferda, et al.
(författare)
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Inequality in oral health related to early and later life social conditions : a study of elderly in Norway and Sweden
- 2015
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Ingår i: BMC Oral Health. - : Springer Science and Business Media LLC. - 1472-6831. ; 15
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Tidskriftsartikel (refereegranskat)abstract
- Background: A life course perspective recognizes influences of socially patterned exposures on oral health across the life span. This study assessed the influence of early and later life social conditions on tooth loss and oral impacts on daily performances (OIDP) of people aged 65 and 70 years. Whether social inequalities in oral health changed after the usual age of retirement was also examined. In accordance with "the latent effect life course model", it was hypothesized that adverse early-life social conditions increase the risk of subsequent tooth loss and impaired OIDP, independent of later-life social conditions.Methods: Data were obtained from two cohorts studies conducted in Sweden and Norway. The 2007 and 2012 waves of the surveys were used for the present study. Early-life social conditions were measured in terms of gender, education and country of birth, and later-life social conditions were assessed by working status, marital status and size of social network. Logistic regression and Generalized Estimating Equations (GEE) were used to analyse the data. Inverse probability weighting (IPW) was used to adjust estimates for missing responses and loss to follow-up.Results: Early-life social conditions contributed to tooth loss and OIDP in each survey year and both countries independent of later-life social conditions. Lower education correlated positively with tooth loss, but did not influence OIDP. Foreign country of birth correlated positively with oral impacts in Sweden only. Later-life social conditions were the strongest predictors of tooth loss and OIDP across survey years and countries. GEE revealed significant interactions between social network and survey year, and between marital status and survey year on tooth loss.Conclusion: The results confirmed the latent effect life course model in that early and later life social conditions had independent effects on tooth loss and OIDP among the elderly in Norway and Sweden. Between age 65 and 70, inequalities tooth loss related to marital status declined, and inequalities related to social network increased.
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| 3. |
- Gülcan, Ferda, et al.
(författare)
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Social predictors of less frequent dental attendance over time among older people : population-averaged and person-specific estimates
- 2016
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Ingår i: Community Dentistry and Oral Epidemiology. - Hoboken, USA : Wiley-Blackwell. - 0301-5661 .- 1600-0528. ; 44:3, s. 263-273
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: Longitudinal studies considering social disparities in the utilization of dental services are scarce. Repeated measures should be accounted for by the use of appropriate statistical methods. The purpose of this study was first to describe the patterns of less frequent dental attendance (less than once a year) over time from the age of 65-70 in Norwegian and Swedish 1942 cohorts. Second, this study estimated the influence of predisposing, enabling and need-related social predictors using marginal model with robust variance estimators and random intercept model, RIM, to account for the clustered structure of the repeated observations. Third, the study aimed to compare the estimates of associations between social predictors and less frequent dental attendance derived from marginal and random intercept models.Methods: In 2007 and 2012, all residents born in 1942 in selected counties of Norway and Sweden were invited to participate in a questionnaire survey. In Norway, the response rate was 58.0% (n = 4211) in 2007 and 54.5% (n = 3733) in 2012 with a follow-up rate of 70%. The corresponding figures in Sweden were 73.1% (n = 6078) and 72.2% (n = 5697), with a follow-up rate of 80%. Marginal and random intercept models were fitted for population-averaged and person-specific estimates. Design effects were calculated by comparing the results from ordinary logistic regression analyses and the marginal model with robust variance estimators. The proportion of the total variation due to differences between persons was reported using the intraclass correlation coefficient (ICC).Results: Less frequent dental attendance declined from 14.5% to 12.2% in Norway and from 13.6% to 12.9% in Sweden. According to marginal and random intercept models, time-invariant (gender, country of birth, education) and time-variant social predictors (working status, social network, marital status, smoking and perceived health) contributed to less frequent dental attendance. A likelihood ratio test confirmed that adjustment for clustered observations was appropriate. The ICC was 0.90 in Norway and 0.85 in Sweden.Conclusions: The prevalence of less frequent dental attendance was low and dropped by increasing age from 65 to 70 years. Both at population and at person-specific levels, being advantaged on social aspects protects against less frequent dental attendance after 65 years of age in the Norwegian and Swedish cohorts investigated.
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| 4. |
- Larsen, Olav Inge, et al.
(författare)
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Antimicrobial effects of three different treatment modalities on dental implant surfaces.
- 2017
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Ingår i: The Journal of oral implantology. - 1548-1336. ; 43:6, s. 429-436
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Tidskriftsartikel (refereegranskat)abstract
- Resolution of peri-implant inflammation and re-osseointegration of peri-implantitis affected dental implants seem to be dependent on bacterial decontamination. The aims of the this study were to evaluate the antimicrobial effects of three different instrumentations on a micro-textured dental implant surface contaminated with an avirulent or a virulent Porphyromonas gingivalis strain and to determine alterations to the implant surface following instrumentation. Forty-five dental implants (Straumann SLA) were allocated to three treatment groups: Er:YAG laser, chitosan brush, and titanium curette (10 implants each), a positive (10 implants) and a negative (five implants) control. Each treatment group and the positive control were split into subgroups of five implants subsequently contaminated with either the avirulent or virulent P. gingivalis strain. The antimicrobial effect of instrumentation was evaluated using checkerboard DNA-DNA hybridization. Implant surface alterations were determined using a light interferometer. Instrumentation significantly reduced the number of attached P. gingivalis (p<0.001) with no significant differences among groups (p=0.310). A significant overall higher median score was found for virulent compared with avirulent P. gingivalis strains (p=0.007); the Er:YAG laser uniquely effective removing both bacterial strains. The titanium curette significantly altered the implant surface micro-texture. Neither the Er:YAG laser nor the chitosan brush significantly altered the implant surface. The three instrumentations appear to have a similar potential to remove P. gingivalis. The titanium curette significantly altered the microstructure of the implant surface.
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