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https://hdl.handle.net/2440/3924
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Type: | Journal article |
Title: | Relative effects of pre- and post-eruption water fluoride on caries experience by surface type of permanent first molars |
Author: | Singh, K. Spencer, A. |
Citation: | Community Dentistry and Oral Epidemiology, 2004; 32(6):435-446 |
Publisher: | Blackwell Munksgaard |
Issue Date: | 2004 |
ISSN: | 0301-5661 1600-0528 |
Statement of Responsibility: | Kiran A. Singh and A. John Spencer |
Abstract: | Objectives: To determine the relative pre- and post-eruption exposure effects of fluoridated water on the caries experience of different surface types of first permanent molars. Methods: Parental questionnaires covering residential history of participants were linked to the oral examinations of 6–15-year-old Australian children conducted in 1992 by the School Dental Services of South Australia and Queensland. Percentage of lifetime exposed to optimally fluoridated water pre- (PRE) and post-eruption (POST) was calculated with respect to tooth eruption age. Combined pre- and post-eruption categories were created to test PRE against POST exposure: PRE and POST = 0, PRE < POST, PRE = POST and in the range 0–90% of lifetime exposure, PRE > POST and, PRE and POST ≥ 90% lifetime exposure. These categories were used as indicator variables in linear regression models with PRE and POST = 0 as reference in an analysis of first permanent molar DMFS scores overall and by surface type. Results: Participation rates were 69.7% in South Australia (n = 9690) and 55.6% in Queensland (n = 10 195). Compared with the reference, the categories PRE > POST (b = -0.033), PRE = POST (b = -0.028) in the range 0–90% and, PRE and POST ≥ 90% (b = -0.055) showed significantly lower caries overall (P < 0.01), with a similar pattern for pit and fissure surface caries (b = -0.035, -0.031 and -0.052, respectively). Only a high PRE and POST exposure decreased caries levels significantly in the approximal (b = -0.038; P < 0.01) and free smooth surfaces (b = -0.023; P = 0.03). Conclusions: Pre-eruption exposure was important for a caries preventive effect on first permanent molars in children 6–15 years old since post-eruption exposure alone could not lower caries levels significantly. For pit and fissure surfaces, a high pre-eruption exposure could decrease caries levels significantly. However, for other surface types, only a high pre- and post-eruption exposure produced a caries preventive effect. |
Keywords: | caries children post-eruption pre-eruption surfaces types water fluoridation |
Description: | Copyright © Blackwell Munksgaard, 2004 The definitive version is available at www.blackwell-synergy.com |
DOI: | 10.1111/j.1600-0528.2004.00182 |
Published version: | http://dx.doi.org/10.1111/j.1600-0528.2004.00182.x |
Appears in Collections: | Aurora harvest 2 Dentistry publications |
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