The effect of Coca‐Cola and fruit juices on the surface hardness of glass–ionomers and ‘compomers’

Abstract

The interaction of tooth-coloured dental restorative materials (a conventional glass-ionomer, two resin-modified glass-ionomers and two compomers) with acidic beverages has been studied with the aim of investigating how long-term contact affects solution pH and specimen surface hardness. For each material (ChemFil Superior, ChemFlex, Vitremer Core Build-Up/Restorative, Fuji II LC, Dyract AP and F2000) disc-shaped specimens were prepared and stored in sets of six in the following storage media: 0.9% NaCl (control), Coca-Cola, apple juice and orange juice. After time intervals of 1 day, 1 week, 1 month, 3 months, 4 months, 6 months and 1 year, solution pH and Vickers Hardness Number were determined for each individual specimen. Differences were analysed by anova followed by Student-Newman-Keuls post hoc analysis. All materials were found to reduce the pH of the 0.9% NaCl, but to increase the pH of the acidic beverages. The conventional glass-ionomers dissolved completely in apple juice and orange juice, but survived in Coca-Cola, albeit with a significantly reduced hardness after 1 year. The other materials survived in apple juice and orange juice, but showed greater reductions in surface hardness in these beverages than in Coca-Cola. Fruit juices were thus shown to pose a greater erosive threat to tooth coloured materials than Coca-Cola, a finding which is similar to those concerning dentine and enamel towards these drinks.

Surface hardness of different restorative materials after long-term immersion in sports and energy drinks

“…Surface hardness is an important indicator of a restorative material's mechanical strength and resistance against intra-oral softening 4,19) . Protracted storage in and contact time with acidic media such as coffee, tea, and mouthwashes have been shown to reduce the surface hardness of resin-based composite materials 14,[20][21][22] . Therefore, the low pH of sports and energy drinks might pose an erosive threat not only on dental hard tissues but also on the clinical longevity of restorative materials.…”

Clinical Performance and Wear Resistance of Two Compomers in Posterior Occlusal Restorations of Permanent Teeth: Six-Year Follow-up

“…Both materials showed a rougher surface with aging, mainly due to friction with food and antagonist teeth during mastication. 16 A slight color mismatch was observed after six years, which could be related to pigment absorption from dietary habits. 17 Also, a reduction in marginal adaptation was detected, with a slight crevice along the marginal interface in all the restorations evaluated.…”

“…[1][2] In the oral cavity, degradation is a common process that includes disintegration and dissolution of materials in saliva and other types of chemical/physical degradations caused by occlusal loading, masticatory forces, temperature challenges and enzymatic attack and pH changing. 16 In addition, clinical failures are more prone to occur when the materials are placed in stress-bearing locations.…”

“…14 The majority of these studies were limited to a three-year follow-up, but the real clinical performance of a restorative material should only be determined after a significant length of time, which is critical for restoration durability 2,15 in the inhospitable oral environment. [16][17] This study aimed to qualitatively evaluate the clinical performance (USPHS criteria) and quantitatively evaluate the occlusal wear (Leinfelder scale) of Class I restorations performed with two different compomers in permanent teeth after a six-year follow-up.…”

Pengaruh Jus Jeruk Dan Minuman Berkarbonasi Terhadap Kekerasan Permukaan Resin Komposit

“…1 Bahan tersebut digunakan untuk merestorasi karies, abrasi enamel dan juga untuk estetika karena memiliki kesesuaian yang baik dengan gigi. 2 Resin komposit memiliki sifat mekanik salah satunya adalah kekerasan permukaan. Kekerasan permukaan merupakan suatu alat ukur bahan restorasi yang digunakan untuk mengetahui daya tahan terhadap keausan, karena dapat mempengaruhi terhadap gesekan mekanik saat mengunyah makanan dan menyikat gigi.…”