Effect of Acidic Challenge Preceded by Food Consumption on Enamel Erosion

Abstract

Objectives:This in vitro study aimed to evaluate the effect of food consumption followed by acidic challenge on enamel erosion.Methods:Seventy-five enamel blocks obtained from bovine teeth were divided randomly into five groups (n=15 per group): GI – erosion with previous immersion in milk; GII – erosion with previous immersion in cheese extract; GIII – erosion with previous immersion in liver extract; GIV – erosion with previous immersion in broccoli extract; and GV – erosive effect of cola drink (control). Over 24 h, the slabs were submitted to 3 pH-cycles, each consisting of immersion in the studied food (GI to GIV) for 5 min followed by immersion in a cola drink for 5 min, and subsequently, the slabs were stored in artificial saliva (110 min). At the end of the pH-cycles, the slabs were stored in artificial saliva for 18 h. Enamel alterations were assessed by profilometry (μm). Data were tested using ANOVA and Scott-Knott’s tests (P<.05).Results:Mean erosion depths for enamel (μm) were 0.46 in GI, 0.55 in GII, 0.64 in GIII, 0.54 in GIV, and 1.18 in GVI. Enamel loss by acidic challenge alone (GV) was significantly higher than when the acidic challenges were preceded by food extract immersion.Conclusions:The data suggest that all studied foods could minimize the erosive effect on enamel.

Potential effects of tooth‐brushing on human dentin wear following exposure to acidic soft drinks

“…Half of the area of each dentin slab was covered with nail varnish and this area was used as a reference to determine the etching depth caused by acidic soft drink. Each dentin slab was immersed in 50 mL of cola drink (pH 2.52) for 15 min (Chuenarrom and Benjakul, 2008; Honório et al , 2010; Lodi et al , 2010; Shellis et al , 2010; Torres et al , 2010; Soares et al , 2011) and rinsed with PBS. Nail polish remover was applied over the nail varnish covering the reference area until clean.…”

Are Vitamin Beverages Good for Dental Health?

“…This can directly affect hard tissue changes, such as dental caries and dental erosion. In particular, the pH level is considered to be the chemical factor in beverages that significantly affects the degree of enamel erosion 12,13) . Therefore, this study attempted to evaluate the potential for dental erosion from vitamin beverages by measuring the pH of the beverages.…”

Permeabilidade e resistência a desafios ácidos do esmalte de dentes de ratos, após o uso sistêmico de alendronato de sódio

“…A avaliação da microdureza é um método viável para quantificar as alterações dos tecidos dentais (DenBesten et al, 2001;Ozbek et al, 2004;Porto et al, 2009;Torres, , 2011; Gomes-Silva, 2011;) submetidos a desafios erosivos (Barbour e Rees, 2004;Attin, 2006;Stenhagen et al, 2010;Torres et al, 2010) e de indução de lesões de cárie (Muller et al, 2007;Rehder-Neto et al, 2009;Honório et al, 2010;Correa-Afonso et al, 2012). A avaliação da microdureza é definida como a mensuração da resistência à deformação permanente de uma superfície quando uma carga é aplicada por um indentador (aço, tungstênio ou diamante).…”

“…Utilizou-se o microdurômetro e com auxílio de um penetrador de diamante para dureza Knoop (KHN) adaptando-se a técnica para analisar esmalte de rato, onde aplicou-se uma carga de 10gf com duração de 10 segundos, de maneira que a ponta do penetrador permanecesse paralela à subsuperfície do esmalte. Os valores de carga de força e distância de penetração foram determinados em estudo piloto prévio, sendo inferior aos valores utilizados em outros trabalhos (Honório et al, 2010;Turssi et al, 2010;Correa-Afonso et al, 2012), uma vez que o esmalte de dentes de ratos apresentam menor dimensão e espessura.…”

“…Embora vários estudos tenham empregado a microscopia de luz em dentes de bovinos (Derceli, 2010), de humanos (Honório et al, 2010;Correa-Afonso et al, 2012) ou de ratos (Mori et al, 2009;Saiani et al, 2009;Porto et al, 2009;do Espirito Santo et al, 2010;Nelson-Filho et al, 2012), nenhum estudo mensurou possíveis alterações da permeabilidade das estruturas dentais mineralizadas em presença ou não de alendronato incorporado, impossibilitando a comparação direta dos resultados obtidos no presente estudo, também nesse aspecto. ______________________________________________________________________________Discussão 58…”