Factors associated with the utilization of prosthetic dental restoration at Ras-Al-Khaimah dental center, UAE.
*RAK dental center, UAE
**Ajman University, Ajman, UAE
Ras-Al-Khaimah (RAK) is located on the Arabian Gulf. It borders Umm Al Quwain, Sharjah, and Fujairah and has long borders with the Sultanate of Oman. The total area of the Emirate of Ras-Al-Khaimah is 2478 km2 according to the survey administra- tion of municipality department. In 2007 the total Population of Ras-Al-Khaimah was officially estimated at 214.000, 132.000 Male and 82.000 Female.1
During 2006 the number of attendants to the Dental Clinics in Ras-Al-Khaimah was 45.519 patients, 8.712 were citizen of whom 2.088 were new cases & 6.624 were follow up cases. Prosthetic treatments are provided by RAK dental center only (where only UAE nationals entitled to receive treatment free of charges). Cases treated are referred from the all dental clinics in Ras-Al-Khaimah.
It is well known that total or partial edentulism is a good indicator of the oral health of population.2, 3 Edentulism can substantially affect oral and general health as well as the overall quality of life 4, 5. Teeth play an important role in the maintenance of a positive self-image. Therefore, loss of teeth results in significant disabilities, which can profoundly disrupt social activities. Tooth loss is very traumatic and upsetting and is regarded as a serious life event that requires significant social and psychological readjustment.6, 7 Whilst specific diseases like dental caries and periodontal disease are the major cause of tooth loss,8, 9, 10 several non-disease factors such as attitude, behavior, dental attendance, and characteristics of the health care system tend to influence in the decision to become edentulous 11. Significant relationship between socio-demographic
variables and edentulism, with age and socio-economic status playing vital roles in edentulism and denture demand.12 Many studies reported that the incidence of edentulism correlated with educational levels and income status, with those in the lower levels exhibiting higher risks of becoming totally edentulous.13, 14
Furthermore, inadequate diet contributed to widespread premature and heavy losses of permanent teeth 15. Tobacco use is a risk factor in tooth loss particularly in people having a high consumption over several years 16. Recent surveys have shown higher frequency of tooth loss among adults in the industrialized countries than among their counterparts in developing countries, where access to dental care is limited.17, 18 In some circumstances stress and other psychological factors may greatly impact health status,19, 20 including oral health. In order to improve the quality of life that is compromised because of the loss of teeth, dentists often recommend removable or fixed prostheses for patients with missing teeth. Epidemiological data on health and its related issues are very important in order to plan for future health care provision. To our knowledge, there is no epidemiological study on edentulousness or prosthetic dental restoration in Ras-Al-Khaimah. The aim of the current study is to determine the prevalence of various types of prosthetic dental restorations among patients who have been treated in the prosthetic department of RAK dental center (the only government dental center which provides this service in RAK) and to investigate its association with some of the socio-demographic characteristics and general health status.
Table 1. Participants' characteristics by age, gende
AGE NUMBER PERCENTAGE
25 - 34 years 231 22.9 %
35 - 44 years 136 13.5 %
45 - 54 years 235 23.3 %
55 - 64 years 232 23.0 %
eN 65 174 17.2 %
GENDER NUMBER PERCENTAGE
Male 358 35.5%
Female 651 64.5%
Table 2. The association between prosthetic dental restorations used and other variables.
AGE -- CD -- SINGLE -- CD /+ RPD -- RPD -- FIXED RESTORATION -- CROWN
25 - 34 years -- 3 -- 1 -- 60 -- 77 -- 90a
35 - 44 years -- 3 -- 1 -- 47 -- 54 -- 31
45 - 54 years -- 29 -- 17 -- 115 -- 49 -- 25
55 - 64 years -- 54 -- 35 -- 116 -- 23 -- 4
eN 65 -- 87 -- 25 -- 59 -- 3 -
GENDER -- CD -- SINGLE -- CD /+ RPD -- RPD -- FIXED RESTORATION -- CROWN
Male -- 73 -- 38 -- 167 -- 50 -- 30a --
Female -- 103 -- 41 -- 230 -- 156 -- 121
EMPLOYMENT STATUS -- CD -- SINGLE -- CD /+ RPD -- RPD -- FIXED RESTORATION -- CROWN
Employed -- 38 -- 18 -- 116 -- 57 -- 31
Unemployed -- 138 -- 61 -- 281 -- 149 -- 120
MEDICAL HISTORY -- CD -- SINGLE -- CD /+ RPD -- RPD -- FIXED RESTORATION -- CROWN
Healthy -- 86 -- 46 -- 261 -- 173 -- 135 a
Diabetics -- 23 -- 5 -- 37 -- 7 -- 4
Hypertension -- 29 -- 17 -- 45 -- 13 -- 2
Other illness -- 5 -- 2 -- 8 -- 5 -- 5
Data has been collected from the patient's files that have been treated in RAK dental center between February 2005 - December 2007 (patients who came for consultation only or did not finish their treatment were not included in this study). Ethical approval for the study was obtained from the ministry of health - RAK medical district. The collected data included the age, gender, employment status and the general health condition of the par- ticipants, in addition to types of prosthetic restoration used. According to the type of the prosthetic restoration used, nine categories were included: (1) complete denture (fully edentulous), (2) single complete denture, (3) single complete denture with par- tial (removable or fixed), (4) single removable partial denture, (5) more than one removable partial denture, (6) Removable partial denture with Fixed partial denture (one or more), (7) single fixed partial denture (bridge or implant), (8) more than one fixed partial denture (bridge or implant), (9) crown or crowns. Regrouping had been made as follow: (1) "complete denture" (fully edentulous), (2) "single complete denture" and/ or single complete denture with partial, (3) "removable partial denture" representing single removable partial denture, or more than one removable partial denture, or removable partial denture with fixed partial denture (one or more), (4) "fixed partial denture", representing single fixed partial denture (bridge or implant), or more than one fixed partial denture (bridge or implant). (5) for "Crowns".
Unfortunately patients' level of education was not mentioned in the patient's file so we choose employment status as an alternative. General health condition included four categories: Healthy, Diabetics, Hypertension, and other illness. Data were analyzed using SPSS program version 13.0.
A total of 1009 patients were included in this study, 358 (35.5%) male and 651 (64.5%) female. The age range of the participants was 25-70 years with the mean age of 44.8 (sd=14.0) years. The utilization of complete dentures, single complete dentures (with or without other prosthetic restoration) and removable partial denture (one or more) were (17.4%), (7.8%), and (39.3%) respectively while, the utilization of the fixed restorations (bridges or implant), crowns were (20.4%), (15.0%) respectively (data not presented).
The association between various type of prosthetic dental restoration used and other variables (age, gender,employment status and medical history) are presented in Table 2. The use of the removable dental prostheses (RPDs) was the highest 397 (39.4%). There was statistically significant association between wearing complete denture in both jaws or single complete denture (with or without other prosthetic restoration), and age. The uses of RPD were significantly higher in patients younger than 65 years. Similarly the use of fixed restoration was significantly higher in patients younger than 65 years. Crowns were used more often in patients aged from 25-34 years.
There was a significant assosiation between gender and the demand for prosthetic dental restoration, 64.5% of the female used it, while only 35.5% were male (Figure 1). Complete dentures in both jaws were significantly more common among female 103 (10.2%) than among male 73 (7.2%). While, the rate of single complete denture (with or without other prosthetic restoration) almost the same among both male and female patients. Compared with 230 females, only 167 males had one or more removable partial denture. Females utilization of fixed restorations were three times more than male, similarly the utilization of crowns were four times higher among female. With regard to the employment status and the utilization of various types of prosthetic dental restoration, it was quite clear that the unemployed participants were the group of highest demand for all types of prosthetic dental restoration. Considering the health status, healthy patients (69.5%) tended to use prosthetic dental restoration more often than those with medical conditions.
In the past, tooth loss in adults has been mainly attributed to periodontal disease and caries, moreover, apart from oral disease various non-disease indicators such as socio-demographic factors, dental utilization behaviors have shown to be associated with tooth mortality. Therefore, knowledge of factors that influence the uses of prosthetic dental prosthesis will be important for effective planning and provision of oral health services.
While in developed countries the need for removable partial denture or complete dentures declines, in less developed countries the need for removable partial or complete dentures is still increasing 21, 22. As expected and consistent with the findings of other studies 23, 24, the results revealed a significant association between the use of various dental prosthesis and age. It is believed that with increasing age, oral and dental problems increase. Although with increasing age, there is a decline in taste and smell 25, which can influence the status of oral health and function; age alone is not responsible for the deterioration of oral health. There may be several other factors such as multiple chronic diseases, intake of several medications and their side effects, socio-economic factors and psychological factors such as depression and isolation (because of gradual loss of spouse and friends and feeling of being unwanted by family members), leading to neglect of personal hygiene and health 26,27.
In a multivariate analysis of oral health survey conducted on the elderly in the UK, it was found that age and educational level had the largest effect on level of edentulousness, persons over 75 years of age were 144 times more likely to have lost all their teeth compared with persons of 16-44 years of age. Similarly persons with no qualifications were nine times and people with qualification below degree level were four times more likely than persons with higher qualifications to be edentulous 28.
Our findings showed that unemployed individuals experienced significantly more tooth loss than the employed participants that might be a reflection of either being retired or having no qualifica- tions. In a study reported from Germany on older adults, it was found that educational level had a direct impact on level of edendulousness 29. Low education level was associated with increased level of edentulousness. Thus, the findings of the pres- ent study are in conformity with the German study Whereas lots of studies 30, 31 revealed a significant association between uses of dental prosthesis and age, our study showed that uses of removable and fixed partial denture were significantly higher in patients younger than 65 years, in contrast, complete denture utilization was significantly higher among those who aged 65 and above.
In conformity with the findings of other studies 32, 33 the present study showed that females were more likely to wear dentures than males. the demand for prosthetic dental restoration were 64% among females while only 35% males. This probably is a reflection of the gender-related differences in the use of dental services. Older women tend to use dental services more often than older men 32. Moreover for older women, oral health can have impact on their feeling of attractiveness 34. This could have contributed to a higher level of denture wearers among women than men.
In the present study employment status also emerged as a factor that influenced denture status, the utilization of all dental prosthesis were higher among unemployed patients, being unemployed might reflect the level of educational attainment this is consistent with finding of Shah et al. study 25, where he reported that the prevalence of wearing of dentures increased with the increase in the level of literacy.
This study reveals that the prevalence of wearing RPDs was high among the prosthetic departments` patients in RAK dental center. The highest frequency of fixed and RPDs among unemployed may reveal an association between tooth loss and education attainment or due to low level dental health care awearness. Further research is required to identify factors contributing to tooth loss among those patients. Efforts are needed to increase dental health care awareness among such group of patients by implementing some educational program. This study might be considered as a base line for further study to be conducted in the future.
The authors would like to thank the staff of RAK dental center for their assistance in this study .
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