{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T23:16:18Z","timestamp":1789514178521,"version":"build-2803163510"},"reference-count":29,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2004,11,9]],"date-time":"2004-11-09T00:00:00Z","timestamp":1099958400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Comm Dent Oral Epid"],"published-print":{"date-parts":[[2004,12]]},"abstract":"<jats:p><jats:bold>Abstract \u2013<\/jats:bold><jats:bold> Objectives:\u2002<\/jats:bold> To determine the relative pre\u2010 and post\u2010eruption exposure effects of fluoridated water on the caries experience of different surface types of first permanent molars.<\/jats:p><jats:p><jats:bold>Methods:\u2002<\/jats:bold> Parental questionnaires covering residential history of participants were linked to the oral examinations of 6\u201315\u2010year\u2010old Australian children conducted in 1992 by the School Dental Services of South Australia and Queensland. Percentage of lifetime exposed to optimally fluoridated water pre\u2010 (PRE) and post\u2010eruption (POST) was calculated with respect to tooth eruption age. Combined pre\u2010 and post\u2010eruption categories were created to test PRE against POST exposure: PRE and POST\u2003=\u20030, PRE\u2003&lt;\u2003POST, PRE\u2003=\u2003POST and in the range 0\u201390% of lifetime exposure, PRE\u2003&gt;\u2003POST and, PRE and POST\u2003\u2265\u200390% lifetime exposure. These categories were used as indicator variables in linear regression models with PRE and POST\u2003=\u20030 as reference in an analysis of first permanent molar DMFS scores overall and by surface type.<\/jats:p><jats:p><jats:bold>Results:\u2002<\/jats:bold> Participation rates were 69.7% in South Australia (<jats:italic>n<\/jats:italic>\u2003=\u20039690) and 55.6% in Queensland (<jats:italic>n<\/jats:italic>\u2003=\u200310\u2003195). Compared with the reference, the categories PRE\u2003&gt;\u2003POST (<jats:italic>\u03b2<\/jats:italic>\u2003=\u2003\u22120.033), PRE\u2003=\u2003POST (<jats:italic>\u03b2<\/jats:italic>\u2003=\u2003\u22120.028) in the range 0\u201390% and, PRE and POST\u2003\u2265\u200390% (<jats:italic>\u03b2<\/jats:italic>\u2003=\u2003\u22120.055) showed significantly lower caries overall (<jats:italic>P<\/jats:italic>\u2003&lt;\u20030.01), with a similar pattern for pit and fissure surface caries (<jats:italic>\u03b2<\/jats:italic>\u2003=\u2003\u22120.035, \u22120.031 and \u22120.052, respectively). Only a high PRE and POST exposure decreased caries levels significantly in the approximal (<jats:italic>\u03b2<\/jats:italic>\u2003=\u2003\u22120.038; <jats:italic>P<\/jats:italic>\u2003&lt;\u20030.01) and free smooth surfaces (<jats:italic>\u03b2<\/jats:italic>\u2003=\u2003\u22120.023; <jats:italic>P<\/jats:italic>\u2003=\u20030.03).<\/jats:p><jats:p><jats:bold>Conclusions:\u2002<\/jats:bold> Pre\u2010eruption exposure was important for a caries preventive effect on first permanent molars in children 6\u201315\u2003years old since post\u2010eruption exposure alone could not lower caries levels significantly. For pit and fissure surfaces, a high pre\u2010eruption exposure could decrease caries levels significantly. However, for other surface types, only a high pre\u2010 and post\u2010eruption exposure produced a caries preventive effect.<\/jats:p>","DOI":"10.1111\/j.1600-0528.2004.00182.x","type":"journal-article","created":{"date-parts":[[2004,11,15]],"date-time":"2004-11-15T16:35:12Z","timestamp":1100536512000},"page":"435-446","source":"Crossref","is-referenced-by-count":50,"title":["Relative effects of pre\u2010 and post\u2010eruption water fluoride on caries experience by surface type of permanent first molars"],"prefix":"10.1111","volume":"32","author":[{"given":"Kiran A.","family":"Singh","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. John","family":"Spencer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2004,11,9]]},"reference":[{"key":"e_1_2_32_2_2","unstructured":"BurtBA EklundSA.Dentistry dental practice and the community. 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