Comparative Study of the Oral Health Profile of Institutionalized Elderly Persons in Brazil and Barcelona , Spain

1 Universidade do Estado do Rio Grande do Norte, Departamento de Odontologia. Caicó, Rio Grande do Norte, Brasil. 2 Agència de Salut Pública de Barcelona. Centro de Investigación Biomédica en Red (CIBER) Epidemiología y Salud Pública (CIBERESP). Barcelona, Espanha. 3 Centro de Investigación Biomédica en Red (CIBER) Epidemiología y Salud Pública (CIBERESP). Agència de Salut Pública de Barcelona, Espanha. 4 Universitdade do Chile, Facultdade de Odontologia. Santiago, Chile. Agència de Salut Pública de Barcelona. Barcelona, Espanha. 5 Universidade Federal do Rio Grande do Norte (UFRN), Departamento de Saúde Coletiva. Natal, Rio Grande do Norte, Brasil.


IntrODuCtIOn
The global population of elderly people will grow in coming years, particularly in developing countries.In Brazil, the population aged 65% and over will reach forty eight million by 2050, representing 22.7% of the population. 1 In Europe, the growth of the population of older people has occurred gradually.Some population projections show that the elderly population in Spain will reach 28% of the population by 2040. 2 Due to the aging population, health authorities throughout the world are facing growing demand for improved health care, including with regard to health problems caused by oral disease. 3herefore, improvement of the oral health of older people has become a priority for the Global Oral Health Program of the WHO (World Health Organization). 4 Both oral health and oral healthcare vary between countries and between regions of the same country. 5In Spain, where the National Health Service provides universal healthcare, dental services exclude restoration and focus on extraction and revision. 6In the Autonomous Region of Catalonia, whose capital is the city of Barcelona, dental programs emphasize the child population and people with disabilities (only groups to have access to restorative procedures) and the actions of fluoridated mouthwashes are reduced to primary schools. 7In this context, the elderly population is jettisoned public dental care.
The Brazilian National Health Service provides basic level, specialized, universal health care to the population.However, only 37% of the population has access to this service. 8Regarding elderly Brazilians, it was observed that among the dentate, the use of dental services was 26.6% and among edentulous, 10.4%, indicating that the use of dental services was lower among those who needed them most. 9In order to broaden the inclusion of oral health in the SUS, was launched in 2004, the National Oral Health Policy (PNSB) -"Smiling Brazil". 10 Although among its assumptions are the qualification of primary health care and ensuring the integrity of the shares, the same as in Spain, the political "Smiling Brazil", also not intended oral health practices specific to the elderly.These facts bring consequences for oral health of this population group.
The physical and social effects of poor oral health in older people has been observed, such as decreased chewing performance, limited food choice, weight loss, malnutrition, communication problems, low self-esteem and well-being, and a negative manner of interacting with ordinary life. 3,11Aesthetics dissatisfaction is directly linked to the absence of teeth and is essential to trigger negative feelings of self-esteem among individuals, taking effect on social relations. 12th respect to institutionalized older people, literature shows that geriatric syndromes are associated with the risk of admission to long-stay institutions. 13Therefore, institutionalized older people represent the most vulnerable group due to their increased frailty, having a worse state of health than non-institutionalized older people.This situation is made worse by the lack of health care in the institutions. 146][17] In this context, the availability of data regarding the oral health status of institutionalized older people from different countries is essential for monitoring oral health, 4 in addition to indicating specific actions aimed at improving the quality of life of these people.Therefore, the aim of this study was to compare the oral health profile of elderly people aged 65 and older, living in long-stay institutions in Brazil and Barcelona, Spain, in 2008 and 2009, respectively, according to gender and country residence with the purpose of understanding the different realities.

MethODs
They were followed the criteria established by Strobe in the preparation of this manuscript.This study does not intend to compare the data on a national basis but compare the realities within the long-stay institutions for the elderly in both countries.
A cross-sectional study of institutionalized older people aged 65 years and above in the health regions of Barcelona, Spain and Brazil in 2009 and 2008, respectively, was performed.Data was taken from two surveys and a clinical examination of the oral health conditions of the individuals.The design of these surveys has been previously described [18][19][20] however, a summary is provided below.
The selection of sample survey of seniors from Brazilian long-stay institution, in 2008, was based on the population of elderly people living in public and private institutions of eleven municipalities of medium and large population size, chosen randomly and belonging to each of the five geographical regions.The cities of each region were randomly selected from the following criteria: 1) municipalities with more than 100,000 inhabitants with a population greater than or equal the median age found in each geographical region; 2) institutions legally registered.A total of 1,412 individuals were selected of which 1,192 (84.4%) participated in the survey.Individuals younger than 65 years were excluded from the present study.The total number of Brazilian older people included was 1,018.
In 2009, in the Barcelona health region in Spain, there were 1,300 people aged 65 or more with a residential profile (i.e.waiting to be moved to one of the 46 public or subsidized long-stay centers).Of these, two centers declined to participate in the study.The convenience sample included people aged 65 and over in 25 long-stay centers which could be accessed during fieldwork.A total of 422 people were included. 20nally, the population included in the study was 1,440 people aged 65 years or above.
The study undertaken in Brazil was approved by the Ethics Research Committee of the Federal University of Rio Grande do Norte (protocol no.0033.0.051.000-06).The study performed in Barcelona, Spain, was approved by the Clinical Ethics Committee of the Instituto Municipal d'Assistència Sanitària (Barcelona, Spain) (IMAS) (protocol no.2008/3666/I).
The oral examinations of the individuals included in the study were performed in accordance with WHO methodology. 21 Brazil, data collection was performed by five calibrated dentists with Kappa values of between 0.71 and 0.89.In Barcelona, Spain, a single dentist performed data collection with intra-examiner Kappa values between 0.85 and 1.00.
The dependent variables were: 1) Use of upper denture (use of some form of denture in the upper arch -yes/no); 2) use of lower denture (use of some form of denture in the lower arch -yes/no); 3) necessity of upper denture (necessity of some form of denture in the upper arch -yes/no); 4), necessity of lower denture (necessity of some type of denture in the lower arch -yes/no); 5) edentulism (total absence of natural teeth -yes/no): 6) functional edentulism (existence of less than twenty teethyes/no); 7) Community Periodontal Index (CPI) categorized as: CPI calculus (sextant of the mouth whose worst condition was the presence of calculus for each individual -yes/no), CPI pocket (sextant of mouth whose worst periodontal condition was the presence of surface or deep pockets for each individual -yes/no), CPI Excluded Sextant (older people with all sextants excluded). 18The CPI was not characterized as a bleeding on probing CPI because of the low number for this category.
The independent variables were: 1) age: as a continuous variable in years, 2) cognitive capacity: appropriate cognitive conditions, according to medical diagnosis -yes/no. 19,20escriptive analysis of all variables was performed.Bivariate and multivariate Poisson Robust Regression models were used to obtain crude Prevalence Ratios (cPR) and adjusted Prevalence Ratios (aPR) and their respective 95% Confidence Intervals (95%CI).In the multivariate model, all the variables with p<0.05 in bivariate analysis were included in the regression model, like other conceptually plausible variables. 20Therefore the adjustment variables were age and cognitive capacity.

resuLts
There were more women than men in the surveys from both countries 57.3% in Brazil and 68% in Barcelona, Spain.The mean age of older people in Barcelona was older than that in Brazil (Table 2).In terms of oral health, there was more damage caused by caries among participants in Brazil, where median values for DMFT, number of teeth lost, edentulism and functional edentulism were significantly higher than Spain.With respect to oral health rehabilitation, elderly individuals in Brazil used more upper dentures and had more necessity for lower dentures than elderly individuals in Barcelona, Spain.Periodontal disease was more prevalent among elderly individuals in Barcelona, Spain (Table 1).
In the multivariate model (Table 3), it was observed that men from Barcelona, Spain had a higher prevalence of dental calculus and periodontal pockets and lower prevalence of partial and total tooth loss than men in Brazil.Women in Barcelona, Spain had a higher prevalence of necessity for upper dentures, presence of dental calculus and periodontal pockets and lower prevalence of use of upper, partial tooth loss and total tooth loss than women in Brazil.

DIsCussIOn
The present study was the first to compare the oral health conditions of institutionalized individuals aged 65 years or older from Brazil and Barcelona, Spain.Brazil and Spain are countries with distinctly different aging patterns and dental care.In general, both male and female institutionalized older people in both countries have poor oral health conditions.
In both countries older men and older women had high levels of tooth loss.Institutionalization of older people is itself considered a risk factor for tooth loss, 17 however it should be noted that the oral health of this population is a consequence of damage accumulated throughout life 20 reflects the model of dental health care adopted in both countries, which is characterized by limited access to dental care services and a fundamentally mutilative approach to dental care. 20,22us, it was verified that even tooth loss is a major public health problem in the countries investigated.This implies increased demand for oral health rehabilitation services for this population group.It was also observed that the highest prevalence of necessity of upper dentures is among women from Barcelona, Spain.This reveals the lack of rehabilitation among older women, which is also caused by the lack of public health policies aimed at the institutionalized population.
In the case of Brazil, the provision of dental health care is historically characterized by low complexity, mostly curative and mutilating, solutions of restricted access to the population.In the majority of municipalities, programs were conducted for school age children aged between 6-12 years, and pregnant women.Adults and the elderly only had access to emergency care units and mutilative treatment (23-26).This exclusive oral health care model existed in Brazil until 2004, when the country implemented the National Oral Health Policy entitled "Brazil Smiling" whereby individual and collective actions were implemented, aimed at the promotion, prevention, diagnosis, treatment and rehabilitation in primary and secondary levels of oral health care. 27though there has been a gradual expansion of interventions in oral health policy, hegemonic models or private dentistry models focused on disease still prevail in Brazil. 24In a case study on the implementation process of the National Oral Health Policy -"Smiling Brazil" -in the municipalities of the Regional Health Department of Araraquara, São Paulo, Brazil, it was observed that the municipalities still find it difficult to deploy assumptions of "Smiling Brazil" because it was observed the tendency of maintaining the model centered on disease due to large pent-up demand, the charges with the production of procedures and training technicalities and clinical. 25It can therefore be stated that this new health policy has not had an effect on the older people in the present study, indicating the need for future studies to evaluate the impact of "Brazil Smiling" on this group.
In Spain, schoolchildren have the right to basic public dental care which is both preventative and restorative of permanent dentition, with restrictions.Each one of the 17 regions (Autonomous Communities) into which the country is divided, can provide these services in a different way, with public financing, and public and private delivery of the service.28 This model of provision of dental care is focused on promotion and prevention of oral disease in infant population, and centered on oral disease, instead of prevention and promotion of oral health among other age groups, which can also lead to inequalities, as the provision of such services is privately financed and only available to those who can afford it.Thus, oral health in Spain is the only area that does not have full coverage by the National Health System.The dental care for adults remains only palliative and rehabilitation of lost teeth due to oral disease is not covered, even partially subsidized, the health system. 7cording to the present study, institutionalized older people from Barcelona, Spain have a higher prevalence of periodontal disease than those in Brazil.Among women, the prevalence of presence of calculus is double, and the prevalence of periodontal pocket is triple, the prevalence of the same in Brazil.This is caused by a greater presence of permanent teeth in older individuals in Barcelona, Spain, as there is a higher prevalence of edentulism and functional edentulism in Brazil.The presence of periodontal pockets can lead to infections, tooth mobility, cervical sensitivity and aesthetic changes, revealing the need for dental treatment for institutionalized older people and indicate a lack of oral care in long stay institutions for older people.Literature shows that carers do not provide adequate oral hygiene care for older residents, due to an absence of procedures, lack of knowledge of oral hygiene practices, and proper training. 14e present study has a number of limitations.It should be noted that the cross-sectional design does not allow analysis of the cause-effect relationship between the variables studied.Additionally, the limited number of explanatory variables common to both questionnaires justifies the absence of socioeconomic variables in the study.However, the dependent variables analyzed can explain the objective conditions of the oral health status of institutionalized older people in both countries.Other strength of the study is the comparison of the oral health status of institutionalized older people in two different social and economic environments, as well as of different dental care health systems.

COnCLusIOn
T he present st udy concludes t hat institutionalized older individuals aged 65 years and above resident in Brazil and Barcelona, Spain, had poor oral health, caused by a high prevalence of partial and total tooth loss in Brazil and periodontal disease in Barcelona.The results indicate that irrespective of the country studied, the oral health of institutionalized older people is vulnerable.Knowledge of this situation may assist with the reorientation of health policies aimed at this population, focused on the maintenance of oral health and improvements to quality of life.

Table 1 .
Description of the oral health characteristics by categorical variables of institutionalized individuals aged 65 years or older stratified for sex and country of residence.Brazil, 2008; Barcelona, Spain, 2009.
*Chi-square test with 95% level of significance

Table 2 .
Description of the oral health characteristics and age by quantitative variables of institutionalized individuals aged 65 years or older stratified for sex and country of residence.Brazil, 2008; Barcelona, Spain, 2009.
*Mann-Whitney test with 95% level of significance

Table 3 .
Prevalence Ratios of oral health conditions of institutionalized individuals aged 65 years or older according to sex in Brazil (2008) and Barcelona, Spain (2009).
*Crude Prevalence Ratio ϯPrevalence Ration adjusted for age and cognitive capacity