Regular use of dental services among adults and older adults in a vulnerable region in Southern Brazil

Abstracts

OBJETIVO: Estimar a prevalência do uso regular de serviços odontológicos por adultos e idosos em comunidade vulnerável e identificar fatores associados. MÉTODOS: Estudo transversal de base populacional com 3.391 adultos e idosos de áreas de vulnerabilidade social de Porto Alegre, RS, de julho a dezembro de 2009. Foi utilizada amostragem sistemática com probabilidade proporcional ao tamanho de cada um dos 121 setores censitários. O desfecho "utilização regular de serviços odontológicos" foi definido consultar com o dentista regularmente, tendo ou não problemas de saúde bucal. Foi aplicado questionário padronizado, que incluiu variáveis demográficas, socioeconômicas, tipo de local procurado, autopercepção de saúde bucal e necessidades autopercebidas. Utilizou-se teste qui-quadrado para heterogeneidade na análise bivariada e na análise ajustada regressão de Poisson, com variância robusta e teste de heterogeneidade de Wald. RESULTADOS: A prevalência do uso regular de serviços odontológicos foi de 25,7%. A prevalência foi maior entre os indivíduos com escolaridade > 12 anos (RP 2,48 [IC95% 1,96;3,15]), mais ricos (RP: 1,95 [IC95% 1,03;1,53]), que utilizaram serviços privados de saúde (RP1,43 [IC95% 1,20;1,71]), com ótima autopercepção de saúde bucal (RP 4,44 [IC95% 3,07;6,42]) e autopercepção de necessidade de consultas para fins de revisão (RP 2,13 [IC95% 1,54;2,96]). CONCLUSÕES: Observam-se desigualdades na utilização regular de serviços odontológicos. Ações que contribuam para aumentar o conhecimento sobre a saúde bucal e melhoria do autocuidado, além de acesso a serviços odontológicos que visem à integralidade da atenção, podem contribuir para o aumento do uso regular dos serviços odontológicos.

Populações Vulneráveis; Assistência Odontológica, utilização; Saúde Bucal; Estudos Transversais

ORIGINAL ARTICLES

Regular use of dental services among adults and older adults in a vulnerable region in Southern Brazil

Uso regular de servicios odontológicos entre adultos y ancianos en región vulnerable en el sur de Brasil

Luciene Petcov Machado^I; Maria Beatriz Junqueira Camargo^II; José Carlos Milanez Jeronymo^III; Gisele Alsina Nader Bastos^III

^ICurso de Especialização Saúde da Família. Escola de Gestão em Saúde. Hospital Moinhos de Vento. Porto Alegre, RS, Brasil

^IIPrograma de Pós-Graduação em Epidemiologia. Universidade Federal de Pelotas. Pelotas, RS, Brasil

^IIIAssociação Hospitalar Moinhos de Vento. Porto Alegre, RS, Brasil

^{Correspondence}

ABSTRACT

OBJECTIVE: To estimate the prevalence of regular use of dental care services by adults and older adults residing in vulnerable community and to identify associated factors.

METHODS: A population-based cross-sectional study was carried out with 3,391 adults and older adults residing in areas of social vulnerability in Porto Alegre, Southern Brazil, from July to December of 2009. A systematic sampling method was used the selection probability proportional to the population of each of the the 121 census sectors. The outcome for regular use of dental care services was defined as regular use of dental services, regardless of the presence of dental problems. A standardized questionnaire was administered, which included demographic, socioeconomic, type of dental care services, self-perception of dental health and self-perceived needs variables. A chi-square test for heterogeneity was used for bivariate analyses, and a Poisson regression with a robust variance and Wald tests were performed for the adjusted analysis.

RESULTS: The prevalence of regular use of dental services was 25.7%. The prevalence was higher among people with >12 years schooling (PR 2.48 [95%CI:1.96;3.15]), higher income (PR 1.95[95%CI: 1.03;1.53]), use of private health services (PR 1.43 [95%CI: 1.20;1.71]),excellent self-perceived oral health (PR 4.44 [95%CI: 3.07;6.42]) and a self-perceived need for consultation related to routine checkup (RP 2.13 [95%CI: 1,54;2,96]).

CONCLUSIONS: Inequalities were found in the regular use of dental services. Integrated approaches that raise awareness of oral health, improve self-care and expand access to dental services, may contribute to increase the use of dental services on a regular basis.

Descriptors: Vulnerable Populations. Dental Care, utilization. Oral Health. Cross-Sectional Studies.

RESUMEN

OBJETIVO: Estimar la prevalencia del uso regular de servicios odontológicos por adultos y ancianos en comunidad vulnerable e identificar factores asociados.

MÉTODOS: Estudio transversal de base poblacional con 3.391 adultos y ancianos de áreas de vulnerabilidad social de Porto Alegre, Sur de Brasil, de julio a diciembre de 2009. Se utilizó muestreo sistemático con probabilidad proporcional al tamaño de cada uno de los 121 sectores censitarios. El resultado "utilización regular de servicios odontológicos" se definió como consulta con el dentista regularmente, teniendo o no problemas de salud bucal. Se aplicó cuestionario estandarizado que incluyó variables demográficas, socioeconómicas, tipo de lugar buscado, autopercepción de salud bucal y necesidades autopercibidas. Se utilizó la prueba de chi-cuadrado para heterogeneidad en el análisis bivariado y regresión de Poisson, en el análisis ajustado, con varianza robusta y prueba de heterogeneidad de Wald.

RESULTADOS: La prevalencia del uso regular de servicios odontológicos fue de 25,7%. La prevalencia fue mayor entre los individuos con escolaridad > 12 años (RP 2,48 [IC95% 1,96;3,15]), más ricos (RP 1,95 [IC95% 1,03;1,53]), que utilizaron servicios privados de salud (RP 1,43 [IC95% 1,20;1,71]), con óptima autopercepción de salud bucal (RP 4,44 [IC95% 3,07;6,42]) y autopercepción de necesidad de consultas de revisión (RP 2,13 [IC95% 1,54;2,96]).

CONCLUSIONES: Se observa desigualdades en la utilización regular de servicios odontológicos. Acciones que contribuyan para aumentar el conocimiento sobre la salud bucal y mejoría del autocuidado, así como de acceso a servicios odontológicos que busquen la integralidad de la atención, pueden favorecer el aumento del uso regular de los servicios odontológicos.

Descriptores: Poblaciones Vulnerables. Atención Odontológica, utilización. Salud Bucal. Estudios Transversales.

INTRODUCTION

Brazil is undergoing a transition from curative and surgical dental services where access was restricted to different population groups to dental services that focus on prevention and equitable access to health.¹⁵ The reorganization of care ensures the quality of services offered, while strengthening health education, preventative measures and the importance of self-care. The National Oral Health Policy (Smiling Brazil [Brasil Sorridente])^ª proposes a reorganization of care for oral health with an emphasis on the action of health promotion, prevention and recuperation of oral health for all Brazilians, based on the principles and rights of the Sistema Único de Saúde (SUS - National Unified Health System).

The Ministry of Health performed an epidemiologic study across the entire country in 2003, called the Brazil Oral Health Project (Projeto de Saúde Bucal Brasil, SB).^b In the previous year, the proportion performing a visit was 37% among adults and 17% among older adults. When asked about the reason for the visit, 26% of adults and 18% of older adults reported a routine visit, i.e. the prevalence of routine use of dental services decreases with age.

Studies show a beneficial association between regular use of dental services and better oral health.^1,6,12 This use creates constant contact between the patient and health provider, contributes to increased knowledge of oral health, improved self-care allows for early identification of dental problems, facilitating recuperation.⁶

A birth cohort study found that young adults, who were classified as regular users, presented a self-perception of oral health as "better than average," less teeth with caries and less dental loss due to caries,¹⁸ even after controlling for sex, socioeconomic stats and a plaque index.

Brazilian population based studies analyzed the prevalence of regular use of dental services by adults and older adults in a small city of Minas Gerais state (southeastern Brazil, 24.6%)¹⁰ and in a medium size city of Rio Grande do Sul state (southern, 3.8%).⁴ Higher education, greater income, younger age and not having a partner were associated with regular use of these services. Individuals that manifested favorable opinions of dentists, that preferred conservative treatment and that received guidance about prevention had a higher prevalence of regular use.^4,10

Considering the limited literature in Brazil about routine use and oral health benefits, this study aimed to estimate the prevalence of regular use of dental services among adults and older adults in areas of social vulnerability and to identify associated factors.

METHODS

A cross-sectional population base study was performed with 3,391 adults and older adults in areas of social vulnerability in Porto Alegre, southern Brazil, from July to December of 2009. Porto Alegre had approximately 1,420,667 residents across 110 neighborhoods. In the Public Health Districts of Restinga and Extreme South, located in the southern zone of the city, have approximately 90,000 residents according to the 2000 Census.^c These districts were officially created in 1990, although there were unorganized settlements, since the 1960s, by people from lower social strata. Located 22 km from the central areas, they only have primary health services and one urgent care clinic. According to the report about the Indicators of Multidimensional Poverty and Extreme Poverty for Porto Alegre from 2007,^d the region of Restinga was characterized as one of the poorest regions in the city per the multidimensional view and is the region with the highest levels of unmet need for health, employment and income. The Multidimensional Index of Needs was constructed for this analysis, in which poverty is conceptualized and measured as a process of multiple needs, which includes the spheres of health, employment, income, education and housing, instead of a simply measurement of income insufficiency. In the region of Restinga, 45.4% of the interviewees lived in extreme poverty, conceptualized as severe deprivation of hunger, cold and housing.

The Hospital Association Moinhos de Vento, in partnership with the Ministry of Health, performed this epidemiology survey to describe demographic and socioeconomic characteristics of these population and to evaluate the health of the community and access and use of medical and dental services.

A count of houses in each census sector was performed because of possible changes since the 2000 Census. Of the 121 census sectors, 117 were included. The count identified 32,067 houses and commercial establishments, of which 29,929 were inhabited. Considering estimates for different outcomes, 1,750 places of residence were randomly selected. Residents age 20 years or older and able to answer the questionnaire were included, for a total of 3,700 adults and older persons.

The parameters used to calculate sample size were: a 25% prevalence in the regular use of dental services, a 95% confidence interval and acceptable error of 2%, with an additional 10% for potential losses and refusals and 15% for potential confounding factors, resulting in a total of 2,238 individuals.

Previously trained interviewers administered the standardized and pre-coded questionnaire that contains 180 questions about demographics, socioeconomic stats and health status. A sub-sample of 10% of the interviews was randomly selected and responses were verified by supervisors through telephone re-interview, to assure data quality. An individual was considered as a sampling loss if they were not encountered after two visits at different days and times that the interviewers alternated and one visit pre-scheduled by the field supervisor. For categorization as a refusal there were at least three attempts to interview and a negative response by the individuals. The response rate was 91.6% for a total of 3,391 individuals interviewed.

After review, the questionnaires were digitized used the software Office Remark^® (Gravic Inc, Philadelphia, USA) with automatic checking for inconsistencies.

The interviewees were provided four options to describe the routine nature of their visits in order to obtain the outcome⁵ (regular use of dental services): (1) I never go to the dentist; (2) I go to the dentist when I have pain or have a problem with my teeth or gums; (2) I go to the dentist sometimes, if I have or do not have a problem; (4) I go to the dentist regularly. People that selected option three or four were considered regular users.

The proximity of determinants was established using the various exposure variables that could influence the regular use of dental services. Demographic variables were considered as distal: sex, age (completed years), self-reported skin color and socioeconomic factors represented by schooling (completed years) and economic level categorized as income quintiles. Variables for self-perception of oral health and type of service normally accessed constituted the intermediate level. The categories for health insurance and private payment were grouped as the private sector, since payment is made in both cases. The most proximal level consisted of the self-perceived need for treatment (need to go to the dentist) categorized by four statements: "yes, to perform a check-up"; "no, everything is fine with my teeth"; "yes, I have pain or have a problem to resolve"; "no, I have a problem, but it can wait".

The bivariate analysis for the regular use of dental services was tests using the chi-square test for heterogeneity. The adjusted analysis use Poisson regression robust variance and the Wald test for heterogeneity. Data analysis was performed with the STATA 9.0 program.

The study was approved by the Committee for Ethics and Human Research of Moinhos de Vento Hospital Association (protocol 2009/28). The participants provided their written consent and received a guarantee of non-disclosure and were informed of their right to withdraw at any point, without repercussions for them or their family.

RESULTS

The prevalence of regular use of dental services was 25.7% (95%CI: 24.2;27.2).

The majority were young adults (between 20 and 39 years), with an average age of 44.1 years, white skin, female sex, and less than nine years of educational attainment (Table 1).

The prevalence of regular use of dental services was inversely proportional to the increase in age. The prevalence of regular use of private services was approximately twice the prevalence for the public sector. Self-perception of very good/good oral health was reported by 56.7% of the sample, and 10.6% of people reported poor/very poor oral health. The prevalence of regular use was 52.2% among those that reported the perception of very good oral health and 8.4% among those that reported poor/very poor (Table 1).

In crude analysis, all the characteristics presented a statistically significant association with the regular use of dental services, with the exception of skin color (Table 1).

The age variable lost statistical significance in the multiple analysis, according to the conceptual model (Table 2). Women used the dental services approximately 30.0% more than men. Prevalence was 1.91 higher among individuals with nine to 11 years of schooling and 2.48 higher more individuals with more than 12 years, when compared to those who had four or less years of schooling.

Individuals that belonged to the richer income quintiles had a greater prevalence of regular use compared to the poorest quintile, even after controlling for the other variables in the more distal level.

Regular use was 43.0% greater in private institutions than in public institutions (Table 2).

The variable most strongly associated with the regular use of dental services was self-perception of oral health. Individuals that reported very good health had a prevalence of regular use 4.4 times greater compared to individuals that reported poor/very poor oral health (Table 2).

Individuals that reported not needing treatment or that only needed a regular check-up utilized dental services approximately two times more than individuals than individuals who reported a problem that could wait (Table 2).

DISCUSSION

The prevalence of regular use of dental services was 25.7% and is in accordance with the limited national literature. Camargo et al⁴ (2009) and Matos et al¹⁰ (2001) found prevalences of regular visits of 32.8% and 24.6% respectively, similar to the present study. This is likely due to the similarities in the educational level of the samples, since greater education is associated with utilization. In the population survey SB Brasil - 2003, 37% of Brazilian adults performed routine visits. Nonetheless, comparisons between studies should be done with caution due to differences in the criteria used to define regular users, in the cultural and socioeconomic characteristics of the populations studied and in the organization of services.¹³

Women perform more regular consultations, according to a Canadian study with low-income women, as also in the present study. In a context of poverty, men have long commutes to work, often far from their residence, which may limit their availability to access dental care.¹¹ In addition, women present greater concern with health and self-care than men. Baldani et al³ (2010) suggest that older people tend to decrease dental visits as they age due to the high prevalence tooth loss and due to difficulty in access which barriers from includes scarce supply of dental care services to barriers such as motor-physical difficulties of these individuals. The belief that dental visits are not necessary for toothless individuals and that tooth loss is part of a natural process of aging both contribute to reduced regular visits.^9,10,13,17 Age lost statistical significance after adjustment for education in the present study. The effect of education can have a more importance role than age on the outcome since it leads to greater knowledge of oral health and understanding of the importance of using preventative health services.

The population of highest income quintile and greatest education had a higher prevalence of regular use of dental services compared to poorer and less educated women, similar to other studies.^4,10 The association of income and education with the outcome may have different meanings. Greater income may facilitate the purchase of a service and education may bring information about the importance of regular use of dental health services.

The association between improved self-perception of oral health and greater regular use of services was observed by other studies. ^1,4,10 In contrast to Matos et al¹⁰ (2001) and in agreement with Camargo et al⁴ (2009), the self-perception of a need for treatment was measured in four levels by the present study. Those that responded "not having a needs because everything was fine" or that "yes, for a checkup" had higher prevalence of regular use compared to individuals that said "despite having a problem to resolve, they could wait". The search for resolution of a perceived problem was not associated with the regular use of dental services, a result similar to observed by other researchers.^7,16 To measure self-perception of the need of treatment in this manner can increase the explanatory power when compared to the most common method, which dichotomized the response as "yes" or "no". ⁷

The highest prevalence of regular use of dental services was among those that used private services, as also observed in Pelotas, southern Brazil.⁴ A study about the characteristics associated with the public sector identified the feeling of pain as a strong predictor for use.¹⁴ Among regular users, this behavior is not common, which may in part explain the greater prevalence of regular use in the private services.⁸

The ratio of dentists/population is 1/15,000, an unfavorable ratio. The repressed demand in the adult and older adult population is large. Breaking with the traditional model of service organization, which prioritized urgent care for the adult population, and reorganizing work processes in order to include health prevention and promotion actions without negatively impacting care for the population constitutes a challenge for dental health services. This new model of care could increase access and regular use of dental services.²

Complementary analyses identified that 73.5% of individuals reported not having any type of medical insurance and 6.6% reported performing a medical visit in a private clinic during the previous three months. This suggests that this is a region where a large percentage of individuals depend exclusively on the public sector. Therefore, increased supply of public dental services can have a large impact on the oral health of this population. The expansion of supply in dental services, with incentives for regular utilization, can lead to improved knowledge about the health and illness process, increase the early diagnosis of oral problems and decrease the resulting loss of teeth from untreated caries.

Among the limitations, the study used a cross-sectional design, which allows for the generation of hypothesis about the associations identified. The outcome generated by self-report may lead to overestimation of regular use, since this behavior is socially desirable. This limitation is possible in all population surveys in which information is obtained by self-report. Nonetheless, the present study had a high response rate and a representative sample of the region, which strengthens its internal validity.

Inequalities were found in the regular use of dental services. Women of greater education, higher income and better self-perception of oral health had higher prevalence of utilization when compared to less educated and poorer men. Having a better perception of oral health and self-perception of a need of treatment to perform a check-up were associated with higher prevalence of regular use in comparison to people with a perceived oral health as poor/very poor and that had a problem but could wait.

Actions that contribute to increased knowledge of oral health and improved self-care, while also increasing access to dental services in an integrated approach, can contribute to increasing the regular use of dental services.

REFERENCES

Received: 8/23/2011

Approved: 1/8/2012

Study performed within the Project to Develop Operational and Management Techniques of Health Services in an Intramuncipal Regions of Porto Alegre - Districts of Restinga Extreme-South, in accordance with the Program to Support Institutional Development of the National Unified Health System, agreed to by the Ministry of Health and the Hospital Assocation of Moinhos de Vento, through accord number 06/2008, signed on 17 of November of 2008.

The authors declare no conflict of interests.

CORRIGENDA

Rev Saude Publica.

2012;46(3):526

Afiliação de autores | Authors affiliation:

Onde se lê | Where it reads

Luciene Petcov Machado^I; Maria Beatriz Junqueira Camargo^II; José Carlos Milanez Jeronymo^III; Gisele Alsina Nader Bastos^II

^ICurso de Especialização Saúde da Família. Escola de Gestão em Saúde. Hospital Moinhos de Vento. Porto Alegre, RS, Brasil

^IIAssociação Hospitalar Moinhos de Vento. Porto Alegre, RS, Brasil

^IIIPrograma de Pós-Graduação em Epidemiologia. Universidade Federal de Pelotas. Pelotas, RS, Brasil

Leia-se | It should read

Luciene Petcov Machado^I; Maria Beatriz Junqueira Camargo^II; José Carlos Milanez Jeronymo^III; Gisele Alsina Nader Bastos^III

^ICurso de Especialização Saúde da Família. Escola de Gestao em Saúde. Hospital Moinhos de Vento Porto Alegre, RS, Brasil

^IIPrograma de Pós-Graduação em Epidemiologia. Universidade Federal de Pelotas. Pelotas, RS, Brasil

^IIIAssociação Hospitalar Moinhos de Vento. Porto Alegre, RS, Brasil

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d

Comim FG, Bagolin IP, Porto Jr SS, Bender Filho R, Picolotto V, Avila RP. Relatório sobre indicadores de pobreza multidimensional e pobreza extrema para Porto Alegre. Porto Alegre: Universidade Federal do Rio Grande do Sul; 2007[cited 2011 Dec 10]. Available from:

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Publication Dates

• Publication in this collection
  10 Aug 2012
• Date of issue
  June 2012

History

• Received
  23 Aug 2011
• Accepted
  08 Jan 2012