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International Poster Journal of Dentistry and Oral Medicine



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Int Poster J Dent Oral Med 12 (2010), No. 2     15. June 2010

Int Poster J Dent Oral Med 2010, Vol 12 No 2, Poster 490

Prevalence of missing teeth and the treatment need in adult population from Iasi, Romania

Language: English

Alice Murariu, Carmen Stela Hanganu, Ioan Danila,
University of Medicine and Pharmacy "Grigore T. Popa", Faculty of Dental Medicine, Department of Community Dentistry, Iasi, Romania

September 3rd-5th, 2009
Annual Congress of European Association of Dental Public Health
Tromso, Norway


Epidemiological studies related to oral status are scarce in Romania. The few studies that can be found in a review of a dental literature relate only to children and to some regions. The planning of a new and performing public oral health system requires a complete image of dental status and treatment needs.


The aim of this study is to evaluate the dental prosthetic status in Iasi county and to correlate the prevalence of missing teeth and treatment need with socio-demographic variables.

Material and Methods

A cross-sectional study was conducted in dental clinics in rural and urban areas of Iasi in 2006-2008 and a sample of 928 people (age 35-44 years old) was examined by 3 calibrated dentists according to the World Health Organization's index criteria.
This index can determine both oral status and treatment needs.
We assessed their income level, as high, medium or low, and tobacco status using a brief questionnaire (table 1). The data was analyzed using the SPSS statistical program package. The following statistical tests were used: Chi-square and Logistic regression.
The study was approved by the Department of the Trust who gave ethical approval.

Variables Nr %
Female 454 48.92
Male 474 51.08
Urban area 491 53.33
Rural area 437 46.66
Income Level  
Low (< 150 €) 180 19.5
Medium (150-500 €) 437 47
High (> 500 €) 311 43.5
Tab. 1: Socio-demographic characteristics of the sample population


Prevalence of missing teeth
The prevalence of the partial edentulous of adults in Iasi was 66.5%. The rate of tooth loss is higher in the rural area: 71.3%, than in urban: 61.5%. More missing teeth was found in male population, prevalence: 68.1 % than in female: 64.9%.Adults with low income had more missing teeth than subjects with high income, prevalence: 76% versus 57%.All these differences are statistically significant, Chi-square test, p < 0.05 (table 2).

Socio-demographic variables Prevalence (%) Chi-square coefficient p value for 95% Confidence Interval
Rural area 71.3 38.1 0.001
Urban area 61.5
Male 68.1 29.3 0.02
Female 64.9
Low income 76 48.5 0.001
Medium income 71
High income 57
Tab. 2: Prevalence of partial edentulous of the adult population in Iasi county

Treatment needs
Prosthetic crown restorations were necessary for 363 subjects (39.1%) and the removable dentures for 39 adults (4.2%). To determine factors associated with partial denture needs, a logistic regression was used (table 3).We found that people with low family income had more risk: OR=7.9, CI= [2.34-26.41] of needing partial denture than people with high economic level.Smokers had also a higher risk : OR=3.2, CI=[1.55-6.73] than non-smokers.

Variables p value Odds ratio (OR) Confidence Interval 95%
Male 0.30 0.705 0.360-1.382
Urban 0.013 0.398 0.193-0.828
Low income 0.001 7.9 2.34-26.41
High income
Smoker 0.001 3.2 1.55-6.73
Tab. 3: Logistic regression: factors associated with partial dentures needs


The prevalence of missing teeth and prosthetic treatment needs were highly related to: low income, rural area, male gender and smoking status.


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  2. Corraini P, Baelum V, Pannuti C (2009) Tooth loss prevalence and risk indicators in an isolated population of Brazil, Acta Odontologica Scandinavia, 67 (5), 297-303.
  3. Petersen, P.E., Kjøller, M., Christensen, L. (2004) Changing dentate status of adults, use of dental health services and achievement of National Dental Goals in Denmark by the year 2000, J Public Health Dent, 64(3): 127-135.
  4. Widstrom, E., Eaton, K.A. (2004) Oral health systems in the extended European Union, Oral Health Prev Dent, 2(3): 155-194.
  5. Word Health Organization, Oral health surveys. Basic Methods. Geneva, WHO, 1997.
  6. Zitzmann N. U. Hagmann E, Weiger R, (2007) What is the prevalence of various types of prosthetic dental restorations in Europe?, Clin Oral Impl Res 18 (suppl 3) 20-33.


WHO = Word Health Organization
OR = Odds Ratio
CI = Confidence Interval

This Poster was submitted by Alice Murariu.

Correspondence address:
Alice Murariu
University of Medicine and Pharmacy "Grigore T. Popa"
Faculty of Dental Medicine, Department of Community Dentistry
Str. Universitatii nr. 11
700115 Iasi, Romania