"Risk periods" associated with the development of dental fluorosis in maxillary permanent central incisors: a meta-analysis

References

• Dean HT, Arnold FA, Elvove E. Domestic water and dental caries. V. Additional studies of the relation of fluoride domestic water to dental caries experience in 4.425 white children aged 12–14 years in 13 cities in 4 states. Public Health Rep 1942;57: 1155–79.
   Google Scholar
• Dean HT. Epidemiological Studies in the United States. In: Moulton FR, editor. Dental caries and fluorine. Washington D.C.: American Association for the Advancement of Science; 1946. p. 5–31.
   Google Scholar
• Thylstrup A, Fejerskov 0. Clinical appearance of dental fluorosis in permanent teeth in relation to histologic changes. Community Dent Oral Epidemiol 1978;6: 315–28.
   Google Scholar
• Nielsen HG, Ravn JJ. A radiographic study of mineralization of permanent teeth in a group of children aged 3-7 years. Scand J Dent Res 1976;84:109–18.
   PubMedGoogle Scholar
• Aasenden R, Peebles TC. Effects of fluoride supplementation from birth on human deciduous and permanent teeth. Arch Oral Biol 1974;19:321–6.
   PubMedGoogle Scholar
• Holm AK, Andersson R. Enamel mineralization disturbances in 12-year-old children with known early exposure to fluorides. Community Dent Oral Epidemiol 1982;10:335–9.
   PubMed Web of Science ®Google Scholar
• Pendrys DG, Katz RV. Risk of enamel fluorosis associated with fluoride supplementation, infant formula, and fluoride denti-frice use. Am J Epidemiol 1989;103:1199–208.
   Google Scholar
• Pendrys DG, Katz RV, Morse DE. Risk factors for enamel fluorosis in a fluoridated population. Am J Epidemiol, 1994; 140:461–71.
   PubMed Web of Science ®Google Scholar
• Ismail Al, Messer JG. The risk of fluorosis in students exposed to a higher than optimal concentration of fluoride in well water. J Publ Health Dent 1996;56:22–7.
   PubMed Web of Science ®Google Scholar
• Evans WR, Stamm JVV. An epidemiologic estimate of the critical period during which human maxillary central incisors are most susceptible to fluorosis. J Publ Health Dent 1991; 51:251–9.
   PubMed Web of Science ®Google Scholar
• McKay FS. Mottled enamel: the prevention of its further production through a change of the water supply at Oaldey, IDA. J Am Dent Assoc 1933;20:1137–49.
   Google Scholar
• Ishii T, Suckling G. The appearance of tooth enamel in children ingesting water with a high fluoride content for a limited period during early tooth development. J Dent Res 1986;65:974–7.
   PubMedGoogle Scholar
• Kierdorf U, Kierdorf H, Fejerskov 0. Fluoride-induced developmental changes in enamel and dentine of European roe deer (Capreolus capreolus L.) as a result of environmental pollution. Arch Oral Biol 1993;38:1071–81.
   Google Scholar
• Kierdorf U, Kierdorf H, Sedlacek F, Fejerskov 0. Structural changes in fluorosed dental enamel of red deer (Cervus elaphus L.) from a region with severe environmental pollution by fluorides. J Anat 1996;188:183–95.
   Google Scholar
• Richards A, Kragstrup J, Josephsen K, Fejerskov 0. Dental fluorosis developed in post secretory enamel. J Dent Res 1986;65:1406–9.
   PubMed Web of Science ®Google Scholar
• Ishii T, Suckling G. The severity of dental fluorosis in children exposed to water with a high fluoride content for various periods of time. J Dent Res 1991;70:952–6.
   PubMedGoogle Scholar
• Bardsen A, Bjorvatn K. Risk of dental fluorosis when exposed to high-fluoride water at different age. J Dent Res 1998;77 (Special Issue B, Abstracts of Papers): 700.
   Google Scholar
• Wang NJ, Gropen AM, Ogaard B. Risk factors associated with fluorosis in a non-fluoridated population in Norway. Commu-nity Dent Oral Epidemiol 1997;25:396–401.
   PubMedGoogle Scholar
• Fleiss JL. The statistical basis of meta-analysis. Statistical Meth Med Res 1993;2:121–145.
   PubMedGoogle Scholar
• Forsman B. Dental fluorosis and caries in high-fluoride districts in Sweden. Community Dent Oral Epidemiol 1974;2:132–48.
   PubMed Web of Science ®Google Scholar
• Osuji 0, Leake JL, Chipman ML, Nikiforuk G, Locker D, Levine N. Risk factors for dental fluorosis in a fluoridated community. J Dent Res 1988;67:1488–92.
   Google Scholar
• Lalumandier JA, Rozier RG. The prevalence and risk factors of fluorosis among patients in a pediatric dental practice. Pediatr Dent 1995;17:19–25.
   PubMedGoogle Scholar
• Hallett GE, Porteous JR. Observations on the dental health of young adults in Hartlepool and Newcastle. Br Dent J 1970; 128:171–4.
   PubMedGoogle Scholar
• Keene HJ, Grossman FD, Pederson ED, Mellberg JR, Nicholson CR. Caries experience and fluoride concentrations of surface enamel in dental fluorosis patients. Caries Res 1975;9:247–50.
   Google Scholar
• Rozier RG, Dudney GG. Dental fluorosis in children exposed to multiple sources of fluoride: implications for school fluoridation programs. Public Health Rep 1981;96:542–6.
   PubMedGoogle Scholar
• Butler WJ, Segreto V, Collins E. Prevalence of dental mottling in school-aged lifetime residents of 16 Texas communities. Am J Public Health 1985;75: 1408–12.
   Google Scholar
• Granath L, Widenheim J, Birkhed D. Diagnosis of mild enamel fluorosis in permanent maxillary incisors using two scoring systems. Community Dent Oral Epidemiol 1985;13:273–6.
   Google Scholar
• Manji F, Baelum V, Fejerskov 0, Gemert W. Enamel changes in two low-fluoride areas of Kenya. Caries Res 1986;20:371–80.
   Google Scholar
• Eklund SA, Burt BA, Ismail Al, Calderone JJ. High-fluoride drinking water, fluorosis and dental caries in adults. J Am Dent Assoc 1987;114:324–8.
   PubMed Web of Science ®Google Scholar
• Wöltgens JHM, Etty EJ, Nieuwland WMD, Lyaruu DM. Use of fluoride by young children and prevalence of mottled enamel. Adv Dent Res 1989;3:177–82.
   Google Scholar
• Ismail Al, Brodeur JM, Kavanagh M, Boisclaire G, Tessier C, Picotte L. Prevalence of dental caries and dental fluorosis in students, 11-17 years of age, in fluoridated and non-fluoridated cities in Quebec. Caries Res 1990;24:290–7.
   PubMedGoogle Scholar
• Riordan PJ, Banks JA. Dental fluorosis and fluoride exposure in Western Australia. J Dent Res 1991;70:1022–8.
   PubMed Web of Science ®Google Scholar
• Ismail Al, Shoveller J, Langille D, MacInnis W, McNally M. Should the drinking water of Truro, Nova Scotia, be fluoridated? Water fluoridation in the 1990's. Community Dent Oral Epidemiol 1993;21: 118–25.
   Google Scholar
• Riordan PJ. Dental fluorosis, dental caries and fluoride exposure among 7-year-olds. Caries Res 1993;27:71–7.
   PubMed Web of Science ®Google Scholar
• Clark DC, Hann HJ, Williamson MF, Berkowitz J. Influence of exposure to various fluoride technologies on the prevalence of dental fluorosis. Community Dent Oral Epidemiol 1994; 22:461–4.
   PubMedGoogle Scholar
• Awad MA, Hargreaves JA, Thompson GW. Dental caries and fluorosis in 7–9 and 11–14 year old children who receieved fluoride supplements from birth. J Can Dent Assoc 1994;60: 318–22.
   Google Scholar
• Ellwood RP, O'Mullane DM. Association between dental enamel opacities and dental caries in a North Wales population. Caries Res 1994;28:383–7.
   PubMedGoogle Scholar
• Grimaldo M, Borja Aburto VH, Ramirez AL, Ponce M, Diaz Barriga F. Endemic fluorosis in San Luis Potosi, Mexico. I. Identification of risk factors associated with human exposure to fluoride. Environ Res 1995;68:25–30.
   Google Scholar
• Skotowski MC, Hunt RJ, Levy SM. Risk factors for dental 1995;55:154–9.
   Google Scholar
• Wang LF, Huang JZ. Outline of control practice of endemic
   Google Scholar
• Pendrys DG. Risk of fluorosis in a fluoridated population. Implication for the dentist and hygienist. Am J Dent Assoc
   Google Scholar
• DiazBarriga F, Leyva R, Quistian J, Loyola Rodriguez JP, Pozos A, Grimaldo M. Endemic fluorosis in San Luis Potosi.
   Google Scholar
• Heller KE, Eklund SA, Burt BA. Dental caries and dental
   Google Scholar
• Bagramian RA, Narendran S, Ward M. Relationship of dental
   Google Scholar
• Kumar JV, Green EL, Wallace W, Carnahan T. Trends in dental fluorosis and dental caries prevalences in Newburgh and
   Google Scholar
• Somvanshi PR, Chaubey BS, Phadake RV, Sakharde PM. Fluorosis in Maharashta. J Assoc Physicians India 1990;38:217–
   PubMedGoogle Scholar
• Wardsen A, Klock KS, Bjorvatn K. Dental fluorosis in selected areas of Norway. Risk factors. J Dent Res 1997;76:1107.
   Google Scholar
• Holt RD, Morris CE, Winter GB, Downer MC. Enamel
   Google Scholar
• Pendrys DG, Katz RV, Morse DE. Risk factors for enamel fluorosis in a nonfluoridated population. Am J Epidemiol
   Google Scholar
• Heifetz SB, Horowitz HS. The amount of fluoride in current fluoride therapies: safety considerations for children. ASDC J
   Google Scholar
• Horowitz HS. Fluoride and enamel defects. Adv Dent Res
   Google Scholar
• Kaminsky LS, Mahoney C, Leach J, Melius J, Miller MJ.
   Google Scholar
• Rugg-Gunn AJ, Murray Jj. Current issues in the use of fluorides in dentistry. Dent Update 1990;17:154–8.
   PubMedGoogle Scholar
• Ripa LW. A critique of topical fluoride methods (dentifrices.
   Google Scholar
• Pendrys DG. Dental fluorosis in perspective. J Am Dent Assoc Newbrun E. Current regulations and recommendations con-cerning water fluoridation, fluoride supplements, and topical fluoride agents. J Dent Res 1992;71:1255–65.
   Google Scholar
• Newbrun E. Current regulations and recommendations concerning water fluoridation, fluoride supplements, and topical fluoride agents. J Dent Res 1992;71:1255•65.
   Google Scholar
• Szpunar SM, Burt BA. Evaluation of appropriate use of dietary fluoride supplements in the US. Community Dent Oral Epidemiol 1992;20:148•54.
   Google Scholar
• D'Hoore W, Van Nieuwenhuysen JP. Benefits and risks of fluoride supplementation: caries prevention versus dental fluorosis. Eur J Pediatr 1992;151:613•6.
   Google Scholar
• Kaminsky LS, Mahoney MC, Miller MJ. Fluoride: benefits and risk of exposure. The preparation of a report. J Am Coll Dent 1992;59:4•7.
   Google Scholar
• Levy SM. A review of fluoride intake from fluoride dentifrice. ASDC J Dent Child 1993;60:115•24.
   Google Scholar
• Riordan PJ. Fluoride supplements in caries prevention: a literature review and proposal for a new dosage schedule. J Public Health Dent 1993;53:174•89.
   Google Scholar
• Li Y. Fluoride: safety issues. J Indiana Dent Assoc 1993;72:22� 6.
   Google Scholar
• Johnston DW. Current status of professionally applied topical fluorides. Community Dent Oral Epidemiol 1994;22:159•63.
   Google Scholar
• Levy SM. Review of fluoride exposure and ingestion. Community Dent Oral Epidemiol 1994;22:173•80.
   Google Scholar
• Ismail AI. Fluoride supplements: current effectiveness, side effects, and recommendations. Community Dent Oral Epidemiol 1994;22:164•72.
   Google Scholar
• Stookey GK. Review of fluorosis risk of self-applied topical fluorides: dentifrices, mouth rinses and gels. Community Dent Oral Epidemiol 1994;22:181•6.
   Google Scholar
• Lewis DW, Banting DW. Water fluoridation�current effectiveness and dental fluorosis. Community Dent Oral Epidemiol 1994;22:153•8.
   Google Scholar
• Horowitz HS. Commentary on and recommendations for the proper use of fluoride. J Public Health Dent 1995;55:57•62.
   Google Scholar
• Ismail AI. What is the effective concentration of fluoride. Community Dent Oral Epidemiol 1995;23:246•51.
   Google Scholar
• Holt RD, Murray JJ. Developments in fluoride toothpaste�an overview. Community Dent Health 1997;14:4•10.
   Google Scholar
• Withford GM. Determinants and mechanisms of enamel fluorosis. In: Ciba Foundation Symposium 205. Dental Enamel. Chichester: John Wiley & Sons; 1997. p. 226•45.
   Google Scholar
• Holloway PJ, Ellwood RP. The prevalence, causes and cosmetic importance of dental fluorosis in the United Kingdom: a review. Community Dent Health, 1997;14:148•55.
   Google Scholar
• Fluoridation debate Environ Health Perspect 1997;105:1176.
   Google Scholar
• Gustavson G, Sundstr�m B. Enamel: morphological considerations. J Dent Res 1975;54 (Spec Issue No. B):114•20.
   Google Scholar
• Withford GM, Allmann DW, Shahed AR. Topical fluorides: effects on physiological and biochemical processes. J Dent Res 1987;66:1072•8.
   Google Scholar
• DenBesten P. Dental fluorosis: its use as a biomarker. Adv Dent Res 1994;8:105•10.
   Google Scholar
• Fejerskov O, Larsen MJ, Richards A, Baelum V. Dental tissue effects of fluoride. Adv Dent Res 1994;8:15•31.
   Google Scholar
• Aoba T. The effect of fluoride on apatite structure and growth. Crit Rev Oral Biol Med 1997;8:136•53.
   Google Scholar
• Baume LJ, Vulliemoz JP. Dietary fluoride uptake into the enamel of caries-susceptible �yellow� permanent teeth and of caries-resistant permanent and primary teeth of Polynesians. Arch Oral Biol 1970;15:431•43.
   Google Scholar
• Heifetz SB, Horowitz HS. Amount of fluoride in selfadministered dental products: safety considerations for children. Pediatrics 1986;77:876•82.
   Google Scholar
• Pendrys DG, Morse DE. Use of fluoride supplementation by children living in fluoridated communities. ASDC J Dent Child 1990;57:343•7.
   Google Scholar
• Horowitz HS. The need for toothpaste with lower than conventional fluoride concentrations for preschool-aged children. J Public Health Dent 1992;52:216•21.
   Google Scholar
• Levy SM, Maurice TJ, Jakobsen JR. A pilot study of preschoolers' use of regular-flavored dentifrices and those flavored for children. Pediatr Dent 1992;14:388•91.
   Google Scholar
• Levy SM, Maurice TJ, Jakobsen JR. Feeding patterns, water sources and fluoride exposure of infants and 1 year olds. J Am Dent Assoc 1993;124: 65•9.
   Google Scholar
• Levy SM, Maurice TJ, Jakobsen JR. Dentifrice use among preschool children. J Am Dent Assoc 1993;124:57•60.
   Google Scholar
• Mwaniki DL, Opinya GN. Fluoride and abrasive content in commonly used dentifrices on the Kenyan market. East Afr Med J 1993;70:288•90.
   Google Scholar
• Nourjah P, Horowitz AM, Wagener DK. Factors associated with the use of fluoride supplements and fluoride dentifrice by infants and toddlers. J Public Health Dent 1994;54:47•54.
   Google Scholar
• Bergmann KE, Bergmann RL. Salt fluoridation and general health. Adv Dent Res 1995;9:138•43.
   Google Scholar
• Levy SM, Kohout FJ, Guha Chowdhury N, Kiritsy MC, Heilman J, Wefel JS. Infants' fluoride intake from drinking water alone, and from water added to formula, beverages, and food. J Dent Res 1995;74:1399•407.
   Google Scholar
• Levy SM, Kiritsy MC, Warren J. Sources of fluoride intake in children. J Public Health Dent 1995;55:39•52.
   Google Scholar
• Van Winkle S, Levy SM, Kiritsy MC, Heilman JR, Wefel JS, Marshall T. Water and formula fluoride concentrations: significance for infants fed formula. Pediatr Dent 1995;17: 305•10.
   Google Scholar
• Mwaniki DL, Gikunju JK. Fluoride concentrations in tissue of fish from low fluoride fresh water lakes in Kenya. Discovery and Innovation 1995;7:173•6.
   Google Scholar
• Mascarenhas AK, Burt BA. Fluoride toothpaste. A risk factor in dental fluorosis. J Dent Res 1996;75:1361.
   Google Scholar
• Silva M, Reynold EC. Fluoride content of infant formulae in Australia. Aust Dent J 1996;41:37•42.
   Google Scholar
• Levy SM, Kiritsy MC, Slager SL, Warren J, Kohout FJ. Patterns of fluoride dentifrice use among infants. Pediatr Dent 1997;19:50•5.
   Google Scholar
• Adair SM, Piscitelli WP, McKnight HC. Comparison of the use of a child and a adult dentifrice by a sample of preschool children. Pediatr Dent 1997;19:99•103.
   Google Scholar
• Heilman JR, Kiritsy MC, Levy SM, Wefel JS. Fluoride concentrations of infant foods. J Am Dent Assoc 1997;128: 857•63.
   Google Scholar
• Neesham DC. Fluoride concentration in AgF and dental fluorosis. Aust Dent J 1997;42:268•9.
   Google Scholar
• Milsom KM, Woodward M, Haran D, Lennon MA. Enamel defects in the deciduous dentition as a potential predictor of the defects in the permanent dentition of 8- and 9-year-old children in fluoridated Cheshire, England. J Dent Res 1996;75:1015•8.
   Google Scholar
• Keene HJ, Melberg JR, Nicholson CR. History of fluoride, dental fluorosis and concentrations of fluoride in surface layer of enamel of caries-free naval recruits. J Public Health Dent 1973;33:142•8.
   Google Scholar
• Larson RH. Animal studies relating to caries inhibition by fluoride. Caries Res 1977;11 Suppl 1:42•58.
   Google Scholar
• Leverett DH, Featherstone JD, Proskin HM, Adair SM, Eisenberg A, Mundorff Shrestha SA, et al. Caries risk assessment by a cross-sectional discriminant model. J Dent Res 1993;72:529•37.
   Google Scholar
• Leverett DH, Proskin HM, Featherstone JD, Adair SM, Eisenberg AD, Mundorff Shrestha SA, et al. Caries risk assessment in a longitudinal discrimination study. J Dent Res 1993;72:538•43.
   Google Scholar
• Lewis DW, Ismail AI, Goldblom R, Battista RN, Anderson G, Beaulieu McLeod R, et al. Periodic health examination, 1995 update. 2. Prevention of dental caries. Can Med Assoc J 1995;152: 836•46.
   Google Scholar
• Brown LJ, Selwitz RH. The impact of recent changes in the epidemiology of dental caries on guidelines for the use of dental sealants. J Public Health Dent 1995;55:274•91.
   Google Scholar
• Ellwood RP, O'Mullane D. The association between developmental enamel defects and caries in populations with and without fluoride in their drinking water. J Public Health Dent 1996;56:76•80.
   Google Scholar
• Riordan PJ. The place of fluoride supplements in caries prevention today. Aust Dent J 1996;41:335•42.
   Google Scholar
• Leverett DH, Adair SM, Vaughan BW, Proskin HM, Moss ME. Randomized clinical trials of the effect of prenatal fluoride supplements in preventing dental caries. Caries Res 1997;31: 174•9.
   Google Scholar
• Clark DC. Trends in prevalence of dental fluorosis in North- America. Community Dent Oral Epidemiol 1994;22:148•52.
   Google Scholar
• Clark DC, Hann HJ, Williamson MF, Berkowitz J. Aesthetic concerns of children and parents in relation to different classification of the Tooth Surface Index of Fluorosis. CommunityDent Oral Epidemiol 1993;21:360•4.
   Google Scholar
• Riordan PJ. Perception of dental fluorosis. J Dent Res 1993; 72:1268•74.
   Google Scholar
• Hawley GM, Ellwood RP, Davies RM. Dental caries, fluorosis and the cosmetic implications of different TF scores in 14-yearold adolecents. Community Dent Health 1996;13: 189•92.
   Google Scholar
• Evans RW. Changes in dental fluorosis following an adjustment to the fluoride concentration of Hong Kong's water supplies. Adv Dent Res 1989;3:154•60.
   Google Scholar
• Evans RW. An epidemiological assessment of the chronological distribution of dental fluorosis in human maxillary central incisors. J Dent Res 1993;72:883•90.
   Google Scholar
• Evans RW, Darvell BW. Refining the estimate of the critical period for susceptibility to enamel fluorosis in human maxillary central incisors. J Public Health Dent 1995;55:238•49.
   Google Scholar
• Marier JR. Some current aspects of environmental fluoride. Sci Total Environ 1977;8:253•65.
   Google Scholar
• Gaciri SJ, Davies TC. The occurrence and geochemistry of fluoride in some natural waters of Kenya. J Hydrology 1993; 143:395•412.
   Google Scholar
• Sirikanth R, Khanam A, Rao AMM. Fluoride in borehole water in selected villages of Medak district, Andhra-Pradesh, India. Fluoride 1994;27:93•6.
   Google Scholar
• Toumba KJ, Levy S, Curzon ME. The fluoride content of bottled drinking waters. Br Dent J 1994;176:266•8.
   Google Scholar
• Rozier RG. A new area for community water fluoridation? Achievements after one-half century and challenges ahead. J Public Health Dent 1995;55:3•5.
   Google Scholar
• Spencer AJ, Slade GD, Davies M. Water fluoridation in Australia. Community Dent Health 1996;13 Suppl 2:27•37.
   Google Scholar
• Pendrys DG. The fluorosis risk index: a method for investigating risk factors. J Public Health Dent 1990;50:291•8.
   Google Scholar
• Rozier RG. Epidemiologic indices for measuring the clinical manifestations of dental fluorosis: overview and critique. Adv Dent Res 1994;8:39•55.
   Google Scholar
• Kingman A. Current techniques for measuring dental fluorosis: issues in data analysis. Adv Dent Res 1994;8:56•65.
   Google Scholar
• Kerebel B, Dubois T, Clergeau Gueritault S, Siau T. (The human dental enamel in endemic fluorosis). SSO Schweiz Monatsschr Zahnheilkd 1973;83:326•43.
   Google Scholar
• Brabant H, Klees L, Newesely H. (The environmental factor in the etiology and origin of dental caries). Acta Stomatol Belg 1974;71:169•210.
   Google Scholar
• Modica R, Benech A. (Dental caries and experimental fluorosis). Minerva Stomatol 1983;32:377•80.
   Google Scholar
• Sergio Gomez S, Weber A, Torres C. (Fluoride content of tea and amount ingested by children). Odontol Child 1989;37:251� 5.
   Google Scholar
• L�kken P, Valderhaug J. (Fluorosis due to fluoride in drinking water. A health risk even in Norway?). Tidsskr Nor Laegeforen 1991;111:1506•7.
   Google Scholar
• Van Nieuwenhuysen JP, D'Hoore W. (Dental caries, fluoride tablets and enamel opacities). Arch Fr Pediatr 1992;49:617•21.
   Google Scholar
• Valova GA, Polzik EV, Zinger VE, Shcerbakov SV. (Dermatoglyphic indices in assessing the predisposition to occupational fluorosis). Tsitol Genet 1994;28:56•9.
   Google Scholar
• Colquhoun J. New evidence on fluoridation. Soc Sci Med 1984;19:1239•46.
   Google Scholar
• de Muniz BR. Epidemiologic oral health survey of Argentine children. Community Dent Oral Epidemiol 1985;13:328•33.
   Google Scholar
• Rozier RG, Beck JD. Epidemiology of oral disease. Curr Opin Dent 1991;1:308•15.
   Google Scholar
• Holloway PJ. International dental public health. Curr Opin Dent 1991;1:348•56.
   Google Scholar
• Morgan MV, Wright FA, Matram ZN, Sundoro E, Chesters RK. The oral health status and health behaviour of 12 and 15- year-old adolescents in Jakarta, Indonesia. Community Dent Health 1992;9: 171•9.
   Google Scholar
• Jackson R, Kelly S, Noblitt T, Zhang W, Dunipace A, Li Y, et al. The effect of fluoride therapy on blood-chemistry parameters in osteoporotic females. Bone and Mineral 1994;27:13� 23.
   PubMedGoogle Scholar
• Clark MM, Album MM, Lloyd RW. Preventive dentistry and the family physician. Fam Physician 1996;53: 619•26, 631•2.
   Google Scholar
• DenBesten P, Ko HS. Fluoride levels in whole saliva of preschool children after brushing with 0.25 g (pea-sized) as compared to 1.0 g (full-brush) of a fluoride dentifrice. Pediatr Dent 1996;18:277•80.
   Google Scholar
• Woodward GL, Leake JL, Main PA. Oral health and family characteristics of children attending private or public dental clinics. Community Dent Oral Epidemiol 1996;24:253•9.
   Google Scholar
• Grimaldo M, Turrubiartes F, Milan J, Pozos A, Alfaro C, DiazBarriga F. Endemic fluorosis in San Luis Potosi, Mexico. 3. Screening for fluoride exposure with a geographic information system. Fluoride 1997;30:33•40.
   Google Scholar
• Kumar J, Swango P, Lininger L, Leske G, Green E, Haley V. Effect of case definition on the association between risk factors and dental fluorosis. J Dent Res 1997;76:3041.
   Google Scholar
• Roberts MW, Keels MA, Sharp MC, Lewis JL. Fluoride supplements prescribing and dental referral patterns among academic pediatricians. Pediatrics 1998;101:E61•4.
   Google Scholar
• Hunter JE, Schmidt FL. Methods of meta-analysis: correcting error and bias in research findings. Newbury Park, London, New Delhi: Sage Publications; 1990. p. 592.
   Google Scholar
• McNemar Q. At random: sense and nonsense. Am Psychol 1960;15:295•300.
   Google Scholar
• Hennekens CH, Buring JE. Case-control studies. In: Mayrent SL, editor. Epidemiology in medicine. Little, Brown and Company: Boston/Toronto; 1987. p. 132•52.
   Google Scholar
• DenBesten PK, Thariani H. Biological mechanisms of fluorosis and level and timing of systemic exposure to fluoride with respect to fluorosis. J Dent Res 1992;71:1238•43.
   Google Scholar
• Li J, Nakagaki H, Kato K, Tsuboi S, Kato S, Morita I, et al. Effect of stopping fluoride administration on the distribution profiles of fluoride in three different kinds of rat bones. Calcif Tissue Int 1995;56:292•6.
   Google Scholar
• Angmar-Ma�nsson B, Whitford GM. Single fluoride dose and enamel fluorosis in the rat. Caries Res 1985;19:145•52.
   Google Scholar
• Angmar-Ma�nsson B, Lindh U, Withford GM. Enamel and dentin fluoride levels and fluorosis following single fluorid doses: a nuclear microprobe study. Caries Res 1990;24:258•62.
   Google Scholar