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In 2002 Caries levelsamong 5-year-olds withwater fluoridation inRoI were 44% lowerthan those in NI.Figure 6 illustrates the dmft/DMFT data according to fluoridation status within each of the 10health board regions for all four age groups. There was considerable regional variation in dentalcaries levels. Mean dmft levels among 5-year-olds (Fig 6a) in non-fluoridated areas ranged from1.6 to 1.9 and were highest in the SEHB and the NWHB regions (1.9) with similarly high carieslevels in NI 5-year-olds (mean dmft 1.8). For fluoridated 5-year-old groups, the range of meandmft was wider 0.6 – 1.6 with the lowest levels in the ECAHB region and the highest in theSEHB & NWHB region. In fluoridated areas dmft levels were lower. The difference betweenscores ranged from 16% lower in the SEHB to 52% lower in the WHB. Overall, caries levelsamong 5-year-olds with water fluoridation in RoI were 44% lower than those in NI.Caries levels in the permanent teeth of 8-year-old children (Fig 6b) were very low in bothfluoridated (mean DMFT 0.3, range 0.2-0.5) and non-fluoridated groups (mean DMFT 0.3,range 0.2-0.4) with little difference between the two or with NI (mean DMFT 0.3).The ECAHB again had the lowest caries levels (0.8) in the 12-year-old fluoridated group (Fig 6c)and the MWHB, SEHB and SHB had the highest (1.5). Interestingly as with the 5-year-old groupthere was a wide range in the percentage differences between DMFT scores among children inthe fluoridated and non-fluoridated groups. The mean DMFT was 22% higher among childrenin the fluoridated group in the NWHB and 34% lower among children in the fluoridated groupin the SHB when compared with DMFT scores of the children in the non-fluoridated groups inthe same region. Mean caries scores among 12-year-olds with fluoridated water were 30%lower in the RoI group than in non-fluoridated NI.Mean DMFT scoresamong 15-year-oldswith water fluoridationin RoI were 42% lowerthan those for thesame age group, withno fluoridation in NI.The DMFT scores in RoI ranged from 1.9 – 2.4 among adolescents (Fig 6d) with fluoridatedwater supplies in the 10 health board regions. In contrast to the younger age groups there waswider variation in mean DMFT scores amongst the non-fluoridated groups (2.5 – 3.7) in the RoI.The range in differences between fluoridated and non-fluoridated groups was 12% in the MHBto 49% in the MWHB. Mean DMFT scores among 15-year-olds with water fluoridation in RoIwere 42% lower than those for the same age group, with no fluoridation in NI (mean DMFT3.6).The source of this wide variation in the apparent effectiveness of water fluoridation requiresurgent consideration to facilitate optimisation of the fluoridation of water supplies in all regions.Research is currently underway which will assess the quality of the scheme in different regions.The findings of that work may shed light on the source of this variation. Further multivariateanalysis of the current data will also be undertaken in an effort to understand the source of thevariation.The percentage of children and adolescents with no caries (Figure 7) in their primary (5-yearolds)or permanent (8-, 12- and 15-year-olds) dentition is another outcome of interest and is auseful measure in the monitoring of trends in oral health. For all four age groups the figuresreflect the trends illustrated by the mean dmft/DMFT data. Over two thirds (69.5%) of 5-yearolds(Fig 7a) with fluoridated water had no caries at cavitation level (cavitated dmft = 0) in theirprimary teeth compared with only half (52.5%) of those without water fluoridation. Thesefigures show that a high proportion of RoI 5-year-olds experience decay in their primary teethby the time they are in their first year in school. Decay in the primary dentition is undesirablebecause:There is danger of infection and damage to the underlying permanent dentition.Early loss of primary teeth can result in a loss of space for the permanent teeth resulting incrowding and a need for orthodontic treatment.Young children can pose a challenge for dental treatment necessitating the use of generalanesthesia.In NI the percentage of 5-year-olds caries free in the primary dentition (52.5%) was similar tonon-fluoridated areas in RoI.18 Children’s Oral Health in Ireland 2002
ResultsFigure 6 Mean number of decayed (cavitated), missing and filled teeth (dmft, primaryteeth 5-year-olds; DMFT, permanent teeth 8-, 12-, 15-year-olds) among children andadolescents with fluoridated (‘Full’) and non fluoridated (‘Non’) domestic water supplies inthe 10 health board regions, ERHA, NI and RoI in 2002(Data excluded where numbers are less than 30)Figure 6a: 5-year-olds4.03.53.0Mean dmft2.52.01.51.00.50.80.61.00.71.21.61.41.71.11.61.51.91.91.60.91.80.81.81.01.71.80.0ERHAERHA-ECAHBERHA- ERHA-NAHB SWAHBMHBMWHBNEHBNWHBSEHBSHBWHBRoINIFull Non Health Board RegionFigure 6b: 8-year-olds4.03.53.0Mean DMFT2.52.01.51.00.50.00.3 0.2 0.3 0.2 0.3 0.3 0.3 0.4 0.50.30.2 0.3 0.4 0.2 0.20.4ERHAERHA-ECAHBERHA- ERHA-NAHB SWAHBMHBMWHBNEHBNWHBSEHBSHB0.2 0.2WHB0.3 0.3 0.3RoINIFull Non Health Board RegionFigure 6c 12-year-olds4.03.53.0Mean DMFT2.52.01.51.00.90.81.10.91.01.11.51.4 1.31.31.21.01.11.5 1.51.0 1.1 1.11.31.50.50.0ERHAERHA-ECAHBERHA- ERHA-NAHB SWAHBMHBMWHBNEHBNWHBSEHBSHBWHBRoINIFull Non Health Board RegionFigure 6d: 15-year-oldsMean DMFT4.03.53.02.52.01.52.01.9 1.92.02.22.51.93.72.42.82.02.92.22.72.43.2 3.22.1 2.13.61.00.50.0ERHAERHA-ECAHBERHA- ERHA-NAHB SWAHBMHBMWHBNEHBNWHBSEHBSHBWHBRoINIFull Non Health Board Region19
Page 1: North South Survey of Children’s
Page 6: A fissure sealant is a plastic resi
Page 9 and 10: Introductioncomparable with earlier
Page 11 and 12: IntroductionThe children were asked
Page 13 and 14: ResultsFluoridation status was clas
Page 15 and 16: ResultsAge of the children and adol
Page 17: Resultsschool based fluoride mouthr
Page 21 and 22: ResultsFigure 7 Percentage of child
Page 23 and 24: ResultsFigure 9 Mean number of prim
Page 25 and 26: ResultsMWHB (mean dmft of 2.9 in 19
Page 27 and 28: ResultsWHO criteria, but not in the
Page 29 and 30: ResultsMean vdmftFigure 12 Mean num
Page 31 and 32: Results% vdmft untreatedFigure 13 U
Page 33 and 34: ResultsOne might expect to find lit
Page 35 and 36: ResultsThere was considerable varia
Page 37: ResultsDEAN’S INDEX OFFLUOROSIS S
Page 40 and 41: Prevalence of traumatic injuryTable
Page 42 and 43: Comparison with the National Childr
Page 44 and 45: Appendix 2Survey Teams, Republic an
Page 46 and 47: Appendix 5a) Principal Trainer and
Page 48 and 49: Appendix 7aMean number of decayed (
Page 50 and 51: Appendix 7cMean number of decayed (
Page 52 and 53: Appendix 7dMean number of decayed (
Page 54 and 55: Appendix 7eMean number of teeth aff
Page 56 and 57: Bibliography1Quality and Fairness,
Page 58: AcknowledgementsThe study of oral d

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