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G H Verrips

Publications and source records attributed to G H Verrips.

36 records · Page 2Linked to original sources
PubMed1993

[Evaluation of the hepatitis B prevention program in newborn infants. I. National data, 1990].

OBJECTIVE: To evaluate the effectiveness of the national programme for prevention of perinatal hepatitis B infections. SETTING: The regional public health laboratories and provincial immunization administrations in the Netherlands. DESIGN: Retrospective evaluation. METHODS: Starting October 1989 routine screening of pregnant women for HBsAg was performed and passive-active immunisation of infants of HBsAg-positive mothers was added to the national immunisation programme. Infants receive hepatitis B immunoglobulin at birth and hepatitis B vaccine at 3,4,5, and 11 months of age, concomitant with the DTP-polio vaccine. The effectiveness of screening and intervention in 1990 was evaluated. RESULTS: Screening covered about 85% of the pregnant population and the prevalence (0.44%) was less than expected. About 60% of the infants born to HBsAg-positive mothers were registered for vaccination. Of these infants the average coverage was 83% for immunoglobulin, and 90%, 86%, 80% and 55% for the four successive hepatitis B vaccinations. There was considerable delay in vaccine administration; frequently doses were administered later than recommended. CONCLUSION: Compliance with screening and vaccination appeared incomplete. Recommendations for the simplification of the current programme are made.

Adult↗
PubMed1993

Ethnicity and maternal education as risk indicators for dental caries, and the role of dental behavior.

The aim of this study was to assess differences in dental health between socioeconomic and ethnic groups in a cohort of 5-yr-old children born in 1982 and in a cohort of 11-yr-old children born in 1976. A further aim was to evaluate the putative role of dental behaviors as intervening factors between ethnicity and maternal education on the one hand and caries experience on the other. A secondary analysis was performed on data collected in a study monitoring the oral health of youths covered by public health insurance (Ziekenfonds) in the Netherlands. The results showed both ethnicity and maternal education to be indicators of caries risk in the primary dentition. For caries in the permanent dentition, only maternal education could be identified as a risk indicator. Dental behaviors were related to caries experience as well as to ethnicity and maternal education, though the evidence for the role of these dental behaviors as intervening factors was weak. It is concluded that the validity and reliability of the behavioral measurements might be questionable and that the mechanism underlying the differences in caries experience between the various groups is still little understood.

Analysis of Variance↗
PubMed1993

[Ethnicity].

Explore the source record for details and available documents.

Dental Care↗
PubMed1993

[Dentistry in Turkey and Morocco].

Some information is given on the number of dentists in Turkey and Morocco and the dental condition of the inhabitants. This information concerns prevention, caries, periodontic diseases as well as other dental diseases and diseases of the mouth.

Adolescent↗
PubMed1993

[Dental caries in children from ethnic groups in the Netherlands. A literature review].

This article reviews the literature on child dental caries in various ethnic groups in the Netherlands. Material from fifteen studies showed generally the dental health of five- to eleven-year-old children of parents born in Turkey or Morocco to be far worse than that of children of Dutch or Surinamese parents. The ethnic groups distinguished, however, turned out not to be homogeneous with regard to dental health. Within each ethnic group the socio-economic status as well as the parental level of fluency in the Dutch language were important additional risk indicators for caries. Regular toothbrushing seemed to be the most important factor to diminish the caries risk.

Adolescent↗
PubMed1993

[Ethnicity and the 'TJZ' decision].

The aim of this study was to assess differences in oral health and dental behaviour in a cohort of five-year-old children born in 1982 and a cohort of eleven-year-old children born in 1976, in different ethnic and socio-economic groups, in the period from 1987 to 1990. To this end a secondary analysis was performed on data collected in a study monitoring the oral health of sick fund insured youths in The Netherlands. Large differences in dental health and dental health behaviour were found between ethnic and socio-economic strata. Thus, in the 1982 cohort, the caries prevalence and incidence were highest in the stratum of children of Turkish or Moroccan mothers with a low or unknown education. In the 1976 cohort, the caries prevalence and incidence were highest in children of Dutch parents with a low or unknown education. It is concluded that both stratification variables were caries risk indicators.

Child↗
PubMed1993

[Caries in children from ethnic groups. An investigation in five-year-old children in Amsterdam and their parents concerning risk indicators and factors].

A previous study has shown five-year-old children of parents originating from Turkey or Morocco to have twice as much dmfs as children of parents from The Netherlands, Surinam or various other countries. In the present study, other risk indicators and factors for the prevalence of caries amongst these children were studied by interviewing their parents at home in their mother tongue about their preventive dental behaviour. Results showed educational level of the parents, and gender of the child to be important risk indicators, apart from ethnicity. Risk factors were the age of the child, at which the parents had started to brush the teeth of the child, the use of fluoride tablets and the regularity of the brushing behaviour.

Adult↗
PubMed1993

[Long-term effects of preventive dental care in toddlers].

A study was executed to investigate the relation between the motivation of the mother to engage in preventive dental behavior, the level of her school education, her place of birth and furthermore the use of fluoride tablets by the child in the age period 1 1/2 - 6 years on the one hand and the caries experience at the age of 6 and 15 years and the prevalence of fluorosis at the age of 15 years on the other. The year of birth of the child was taken into account as a possible confounding factor. A significant relation was found between the use of fluoride tablets and the prevalence of fluorosis. The most important predicting factor for the caries experience of the child was the mother's motivation to engage in preventive dental behavior. An effect of fluoride tablets on the caries experience could not be demonstrated.

Adolescent↗
PubMed1993

Oral health and dental behaviour in 11-year-old children of different ethnic groups.

This investigation was first, to assess the oral health of 11-year-old children in four ethnic groups in Amsterdam; second, to assess their dental behaviour and third, to identify potential determinants of frequency of toothbrushing. Representative samples of 97 Surinamese, 209 Moroccan, 128 Turkish and 102 Dutch children were examined orally and asked to complete a questionnaire. Results showed that Turkish and Moroccan children had higher mean DMFT and DMFS scores than the Surinamese and the Dutch children. The mean plaque scores in the Turkish and Moroccan children were higher than those in the other two groups. Large differences in frequency of toothbrushing were found between the four ethnic groups, the Surinamese and Dutch children claimed to be the more regular brushers. Logistic regression analysis showed that the frequency of toothbrushing was related to the children's attitude towards toothbrushing and not to parental influence.

Analysis of Variance↗
PubMed1992

Risk indicators and potential risk factors for caries in 5-year-olds of different ethnic groups in Amsterdam.

The aim of this study was threefold: first, to assess the oral health of Turkish, Moroccan, Surinamese, Dutch and "other" 5-yr-old children living in Amsterdam; second, to identify risk indicators for caries, in addition to ethnicity; and third, to identify potential risk factors related to differences in caries experience in these children. Results showed the mean dmfs scores of Turkish and Moroccan children to be much higher than that of the Dutch and Surinamese children; 8.1 and 8.2 versus 3.6 and 3.4, respectively. The educational level of the parents and the gender of the children were important risk indicators, in addition to ethnicity. The age of the child at which the parents had started to brush their child's teeth, the use of fluoride tablets and the regularity of the brushing behavior in the past could be identified as potential risk factors.

Analysis of Variance↗
PubMed1992

[Epidemiology of dental caries in the Netherlands].

Both in 6- and 12-year-old Dutch children the prevalence of dental caries has declined remarkably between 1970 and 1985. However, in 6-year-olds the decline terminated after that period, while it continued in the 12-year-olds. In 1986 a national dental survey of the caries prevalence of older age categories was executed. As no comparable caries data are available from an earlier period of time, no certain conclusion can be drawn about changes in adult caries prevalence. A comparison of the national data mentioned to data from a country where the caries prevalence in children did not decline (former DDR), suggests that Dutch adults younger than 25 year have a relatively low caries experience at this moment.

Adult↗
PubMed1992

[The activity package of the dental assistant].

The aim of this study was to assess the package of activities that is actually carried out by the chairside assistant, and the activities that should be dropped or added to the package, according to both assistants and dentists. A representative sample of 1034 dentists and their assistants received a questionnaire. Results showed large differences between assistants in kind and number of activities actually carried out. Part of the group of assistants as well as part of the group of dentists expressed their wish to extend the package of activities.

Data Collection↗
PubMed1992

[Oral health and ethnicity. An epidemiologic investigation in 5- and 11-year-olds in Amsterdam].

This study investigates whether the oral health of 5- and 11-year-old children of immigrants from Turkey and Morocco is worse than that of Dutch peer groups in Amsterdam. The outcome variables considered were dmft/s. DMFT/S and the index-components, amount of plaque and number of tooth surfaces sealed (only 11-year olds). The explanatory variable considered was ethnicity (Turkish, Moroccan, Dutch, Surinam and 'Others'). The mean dmfs-score of Turkish and Moroccan 5-year olds was significantly higher than that of Dutch children: 8.1 and 8.2 vs. 3.6, respectively. Also a significant difference in mean DMFS-score between Turkish and Dutch 11-year olds was found; 3.3 vs. 1.7, but not between Moroccan and Dutch children. On average 1.8 surfaces were found sealed in 11-year olds. The mean plaque scores observed in Turkish and Moroccan five- and 11-year olds was significantly higher than in Dutch children. It was concluded that the oral health of Turkish and Moroccan children in Amsterdam was worse than that of their Dutch peer groups and that programs should be developed aimed at improving this situation.

Child↗
PubMed1990

Dental caries prevalence and the use of fluorides in different European countries.

Data in a WHO report relating caries prevalence and the use of fluorides in different European countries were compared with data obtained directly from investigators in the field of oral epidemiology. The reliability of DMFT indices of 12-year-old children, mentioned in the WHO report, appeared sufficient to make comparisons between countries on the basis of these data. The WHO data files on the different applications of fluoride were incomplete. When figures were present, they were not always in agreement with those from the investigators. A decrease of the DMFT indices could be shown in a large number of countries. In further comparative studies between European countries, cultural differences (in dietary habits, for instance) should be taken into account.

Adolescent↗
PubMed1990

[Dental fluorosis in relation to the use of fluoride tablets].

The prevalence of dental fluorosis on the buccal tooth surfaces was investigated in 15-year-old children in the towns Tiel and Culemborg, using the Tylstrup-Fejerskov scoring system. A study done in 1980 revealed that at the age of six, 53% of the children in Tiel and 30% of the children in Culemborg took one or more fluoride tablets (0.25 mg F-) daily. In Tiel the tablets were provided free of charge in a centre for child dental care. On the basis of the number of tablets supplied in the age period 1.5-6 years, most of the 15 year olds in Tiel could be classified as regular, irregular or non-tablet user. Only mild fluorosis (TF-score 1, 2 or 3) was found. The percentage of children with one or more buccal surfaces affected with fluorosis was 24 in Tiel and 22 in Culemborg. The percentages of buccal surfaces with fluorosis were 6 (Tiel) and 7 (Culemborg). In Tiel the percentages of surfaces with fluorosis in the groups regular, irregular and non-tablet users were 12%, 5% and 2% respectively.

Adolescent↗
PubMed1990

Has the decline in dental caries been halted? Changes in caries prevalence amongst 6- and 12-year-old children in Friesland, 1973-1988.

In 1973, 1976, 1979, 1982 and 1988 caries investigations were carried out amongst 6- and 12-year-old primary schoolchildren to study the effectiveness of a dental health campaign begun in 1973. This campaign and the school dental health services were stopped in 1985. In all the years, except 1988, radiographs formed part of the caries examination. The percentage of 6-year olds with a caries-free dentition increased from 4 per cent in 1973 to 47 per cent in 1988, and for 12-year olds from 0 per cent in 1973 to 45 per cent in 1988. The mean dmfs score decreased steeply from 14.4 in 1973 to 3.8 in 1982 and rose slightly to 4.0 in 1988. This latter score was 4.6 if a correction for the X-ray effect were applied. The mean DMFS score in 12-year olds showed a constant decline, from 13.7 in 1973 to 2.0 in 1988. The half in the decline of caries in the deciduous dentition of these 6-year-old cohorts is regarded as a warning that caries may be on the increase again in this part of The Netherlands. Regular monitoring is therefore required. Explanations for this halt in the decline of caries are discussed.

Child↗