The analysis of WTP examined the participants assessment

The analysis of WTP, examined the participants׳ assessment of how much they thought each of the treatments were worth spending on, based on their ability to spend. The scenario that was given was based on the past experiences of the participants and their future expectations, as all had some past tooth loss and carious (cavities) experience. Only those with some natural dentition were included to ensure the temporal relevance of the questions that were being asked. The high prevalence of dental diseases distinguishes it Quizartinib manufacturer from some of the other conditions studied elsewhere, where the incremental cost-effectiveness analysis measures were made to compare those with disease experience versus those who didn׳t have the same [28].
In the multivariable negative binomial regression analysis, OIDP was significantly related to WTP for extraction (p=0.04), and approaching statistical significance with fillings at (p=0.05), while not being significantly related to WTP for cleaning teeth. WTP was adjusted for demographic variables, McArthur Scale, and a variable constructed to measure the beliefs gauging the importance of oral health. Lower OIDP scores (indicating better patient outcomes) tended to have higher WTP for all three procedures. This was different from results reported for other conditions, where worse quality of life (QOL) was linked to higher WTP [25,27]. The difference could be due to the less severe impacts on QOL, the chronic nature of many dental diseases, high prevalence, low dental expectations, Quizartinib manufacturer and lower health literacy among older cohorts. These would be useful to test in the future.
Mean WTP for filling and cleaning reduced by about 4% for each year, and the mean WTP for extraction was reduced by 2% for each year of age. This may indicate a higher priority for extraction with increasing age when compared to filling and cleaning. This was similar to a previous study where age and gender were related to WTP for regular dental check-ups and income was not related to it [13].
Our study may be limited by sample-size, as with a larger sample-size statistical significance (at 5%) for the WTP for filling and extraction may have been achievable. There is a need to replicate the study, as the results were unexpected, but consistent through our analysis. There are several limitations to the measurement of willingness to pay measurements and the method of elicitation used here. This includes, a slightly higher WTP possible from the bidding method used here versus other methods [29]. The starting amount given here was estimated based on the cost of the procedures charged by general dental practitioners in the hospital. This could be higher than the ability to pay of the lower income individuals and may have starting point bias, with higher reported WTP. Despite these, the reported WTP was very low across the board.


This research was funded by the Ministry of Education, Singapore AcRF Tier 1 Grant (WBS R-221-000-035-112).

Periodontitis is a chronic inflammatory disease of tissues surrounding the teeth caused by specific anaerobic pathogens. The destructive process of periodontitis is thought to begin with the accumulation of biofilms which contain significant bacterial masses on the tooth surface at or below the gingival margin. Periodontal destruction is thought to occur as a result of the host inflammatory response against these bacteria and from release of toxic products from the pathogenic plaque. The potential impact of many systemic disorders on the periodontium is well-documented. Also, evidence suggests that periodontal infection may significantly enhance the risk for certain systemic diseases or alter the natural course of systemic conditions [1]. Conditions in which the influences of periodontal infection are documented include coronary heart disease (CHD) and CHD-related events such as angina and myocardial infarction, atherosclerosis, stroke, diabetes mellitus, preterm labor, low birth-weight delivery, and respiratory conditions.