Revista de Odontologia da UNESP
https://revodontolunesp.com.br/article/doi/10.1590/1807-2577.1014
Revista de Odontologia da UNESP
Original Article

Development of caries adjacent to composite restorations aft er exposure to dentifrices with diff erent fl uoride concentrations

Desenvolvimento de cárie adjacente a restaurações de resina composta após exposição à dentifrícios fl uoretados de diferentes concentrações

Romão, Dayse Andrade; Oliveira, Guilherme José Pimentel Lopes de; Reis, José Ivo Limeira dos; Santos, Lucineide de Melo

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Abstract

Objective: To evaluate the development of recurrent caries after exposure to fluoride dentifrices with different concentrations. Material and method: 48 samples of bovine incisors (4x4mm2) were exposed to pH cycling for 7 days before the preparation of the cavities (2mm deep). The samples were restored with a microhybrid resin composite. Then, the samples were exposed to thermal cycling (350 cycles) and they were randomly allocated into 4 treatment groups (n = 12): Group A - non-fluoridated dentifrice (negative control); Group B - 500 ppm dentifrice; Group C - 750 ppm dentifrice; group D - 1100 ppm dentifrice (positive control). The samples were treated with solutions of each dentifrice (9.6 ml water/1.6 g dentifrice) for 60 seconds and then were immersed in demineralizing (3 h) and remineralizing (2 h) solutions 3 times a day. Next, the samples were immersed in a remineralizing solution for 18 hours. Then, the blocks were sectioned for examination of the length of the outer caries lesion, using polarized light microscopy. The ANOVA parametric test complemented by the Tukey test with a confidence level of 95%, were used in the statistical analysis. Result: A smaller lesion length was observed in the group treated with the fluoride concentration of 1100 ppm F, but there were no differences between toothpastes with fluoride concentrations of 500 and 750 ppm F. Conclusion: The use of fluoride dentifrices (1100 ppm) reduces the development of caries adjacent to dental restorations.

Keywords

Dental caries, dentifrices, dental materials.

Resumo

Objetivo: Avaliar o desenvolvimento de cárie recorrente após exposição à dentifrícios fluoretados de diferentes concentrações. Material e método: 48 amostras de incisivos bovinos com área exposta de 4x4mm2 foram submetidos a ciclagens de pH por 7 dias e em seguida foram preparadas cavidades com 2mm de profundidade que restauradas com resina microhibrida. Posteriormente, as amostras foram submetidas à ciclagem térmica (350 ciclos) e confeccionados blocos de esmalte distribuídos aleatoriamente em 4 grupos de tratamento (n=12): Grupo A- dentifrício sem flúor (controle negativo); Grupo B- dentifrício 500 ppm; Grupo C- dentifrício 750 ppm; Grupo D- dentifrício 1100 ppm (controle positivo). As amostras foram tratadas com soluções de cada dentifrício (9,6 ml água/1,6 g de dentifrício) por 60 segundos e em seguida imersas em soluções desmineralizante (3 h) e remineralizante (2 h), 3 vezes ao dia, permanecendo posteriormente 18 horas em solução remineralizante. Em seguida, os blocos foram seccionados para análise da profundidade da lesão de cárie em microscopia de luz polarizada. Os dados foram submetidos ao teste paramétrico de Anova complementado pelo teste de Tukey com nível de confiança de 95%. Resultado: Uma menor profundidade da lesão foi verificada no grupo tratado com dentifrício de 1100 ppm F, porém não houve diferença significativa entre os dentifrícios de 500 e 750 ppm F. Conclusão: A utilização de dentifrício fluoretado (1100 ppm) interfere na redução do desenvolvimento de lesões de cárie adjacentes a restaurações.

Palavras-chave

Cárie dentária, dentifrícios, materiais dentários.

References

1. Ten Cate JM. In vitro studies on the effects of fluoride on de- and remineralization. J Dent Res. 1990 February;69(Spec No):614-9, discussion 634-6. PMid:2179322.

2. Cury JA, Tenuta LM. Enamel remineralization: controlling the caries disease or treating early caries lesions? Braz Oral Res. 2009; 23(Suppl 1):23-30. http://dx.doi.org/10.1590/S1806-83242009000500005. PMid:19838555

3. Toda S, Featherstone JD. Effects of fluoride dentifrices on enamel lesion formation. J Dent Res. 2008 March;87(3):224-7. http://dx.doi.org/10.1177/154405910808700303. PMid:18296604

4. Tenuta LM, Cury JA. Fluoride: its role in dentistry. Braz Oral Res. 2010; 24(Suppl 1):9-17. http://dx.doi.org/10.1590/S1806-83242010000500003. PMid:20857070

5. Cury JA, Oliveira MJ, Martins CC, Tenuta LMA, Paiva SM. Available fluoride in toothpastes used by Brazilian children. Braz Dent J. 2010; 21(5):396-400. http://dx.doi.org/10.1590/S0103-64402010000500003. PMid:21180793

6. de Almeida BS, da Silva Cardoso VE, Buzalaf MA. Fluoride ingestion from toothpaste and diet in 1- to 3-year-old Brazilian children. Community Dent Oral Epidemiol. 2007 February;35(1):53-63. http://dx.doi.org/10.1111/j.1600-0528.2007.00328.x. PMid:17244138

7. 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 (fullbrush) of a fluoride dentifrice. Pediatr Dent. 1996 July-August;18(4):277-80. PMid:8857654.

8. Moraes SM, Pessan JP, Ramires I, Buzalaf MA. Fluoride intake from regular and low fluoride dentifrices by 2-3-year-old children: influence of the dentifrice flavor. Braz Oral Res. 2007 July-September;21(3):234-40. http://dx.doi.org/10.1590/S1806-83242007000300008. PMid:17710289

9. Queiroz CS, Hara AT, Paes Leme AF, Cury JA. pH-cycling models to evaluate the effect of low fluoride dentifrice on enamel de- and remineralization. Braz Dent J. 2008; 19(1):21-7. http://dx.doi.org/10.1590/S0103-64402008000100004. PMid:18438555

10. Lima FG, Romano AR, Correa MB, Demarco FF. Influence of microleakage, surface roughness and biofilm control on secondary caries formation around composite resin restorations: an in situ evaluation. J Appl Oral Sci. 2009 January-February;17(1):61-5. http://dx.doi.org/10.1590/S1678-77572009000100012. PMid:19148408

11. Brasil. Ministério da Saúde. Projeto SB Brasil 2010: Pesquisa nacional de saúde bucal: resultados principais. Brasília: Ministério da Saúde; 2011.

12. Featherstone JD, Holmen L, Thylstrup A, Fredebo L, Shariati M. Chemical and histological changes during development of artificial caries. Caries Res. 1985; 19(1):1-10. http://dx.doi.org/10.1159/000260824. PMid:3856481

13. Chedid SJ, Cury JA. Effect of 0.02% NaF solution on enamel demineralization and fluoride uptake by deciduous teeth in vitro. Braz Oral Res. 2004 January-March;18(1):18-22. http://dx.doi.org/10.1590/S1806-83242004000100004. PMid:15273781

14. Itthagarun A, Thaveesangpanich P, King NM, Tay FR, Wefel JS. Effects of different amounts of a low fluoride toothpaste on primary enamel lesion progression: a preliminary study using in vitro pH-cycling system. Eur Arch Paediatr Dent. 2007 March;8(1):69-73. http://dx.doi.org/10.1007/BF03262573. PMid:17394894

15. Hellwig E, Altenburger M, Attin T, Lussi A, Buchalla W. Remineralization of initial carious lesions in deciduous enamel after application of dentifrices of different fluoride concentrations. Clin Oral Investig. 2010 June;14(3):265-9.; published online June 2, 2009. http://dx.doi.org/10.1007/s00784-009-0290-4. PMid:19488796

16. Bücher K, Tautz A, Hickel R, Kühnisch J. Longevity of composite restorations in patients with early childhood caries (ECC). Clin Oral Investig. 2014 April;18(3):775-82.; published online July 20, 2013. http://dx.doi.org/10.1007/s00784-013-1043-y. PMid:23873324

17. Reis AF, Giannini M, Lovadino JR, dos Santos Dias CT. The effect of six polishing systems on the surface roughness of two packable resinbased composites. Am J Dent. 2002 June;15(3):193-7. PMid:12469758.

18. Walsh T, Worthington HV, Glenny AM, Appelbe P, Marinho VC, Shi X. Fluoride toothpastes of different concentrations for preventing dental caries in children and adolescents. Cochrane Database Syst Rev. 2010; (1):CD007868. http://dx.doi.org/10.1002/14651858. CD007868.pub2. PMid:20091655.

19. Cury JA, do Amaral RC, Tenuta LM, Del Bel Cury AA, Tabchoury CP. Low-fluoride toothpaste and deciduous enamel demineralization under biofilm accumulation and sucrose exposure. Eur J Oral Sci. 2010 August;118(4):370-5. http://dx.doi.org/10.1111/j.1600-0722.2010.00745.x. PMid:20662910

20. Lima TJ, Ribeiro CC, Tenuta LM, Cury JA. Low-fluoride dentifrice and caries lesion control in children with different caries experience: a randomized clinical trial. Caries Res. 2008; 42(1):46-50.; published online November 27, 2007. http://dx.doi.org/10.1159/000111749. PMid:18042987

21. Rirattanapong P, Smutkeeree A, Surarit R, Saendsirinavin C, Kunanantsak V. Effects of fluoride dentifrice on remineralization of demineralized primary enamel. Southeast Asian J Trop Med Public Health. 2010 January;41(1):243-9. PMid:20578505.

22. Nobre-dos-Santos M, Rodrigues LK, Del-Bel-Cury AA, Cury JA. In situ effect of a dentifrice with low fluoride concentration and low pH on enamel remineralization and fluoride uptake. J Oral Sci. 2007 June;49(2):147-54. http://dx.doi.org/10.2334/josnusd.49.147. PMid:17634728

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