Preventive effect of fluoridated orthodontic resins subjected to high cariogenic challenges

Abstract

The aim of the present study was to evaluate the in vitro caries preventive effect of fluoridated orthodontic resins under pH cycling with two types of acid demineralizing saliva. Brackets were bonded to 60 bovine incisors, using either Transbond Plus Color Change (n=30) or Orthodontic Fill Magic (n=30) orthodontic resins. Each group of resin was divided into 3 subgroups (n=10): immersion in remineralizing artificial saliva for 14 days, pH cycling with high cariogenic challenge in acid saliva with pH 5.5, and acid saliva with pH 4.5. After 14 days of pH cycling, the caries preventive effect on the development of white spot lesion was evaluated considering the presence of inhibition zones to white spot lesions using two scores: 0= absence and 1= presence. Kruskal Wallis and Mann-Whitney tests (a=0.05) were used. Formation of white spot lesions was observed only under pH cycling using acid saliva with pH 4.5; with Transbond Plus Color Change being significantly more effective (p<0.05) in preventing the appearance of white spot lesions effect than Orthodontic Fill Magic. The acidity of the demineralizing solution influenced the formation of white spot lesions around orthodontic brackets under highly cariogenic conditions. Transbond Plus Color Change resin presented higher caries preventive effect than Orthodontic Fill Magic.

Surface Degradation of Resin-based Materials by Pediatric Syrup Containing Amoxicillin under Erosive Challenge

“…In an attempt to simulate oral conditions as closely as possible, this experiment was performed under pH cycling where the samples remained for longer periods in an acidic media as suggested previously [18] and other published studies [21,22]. Acidic conditions are mediums of choice to mimic some in vivo conditions.…”

Mineral content of ionomer cements and preventive effect of these cements against white spot lesions around restorations

“…20,21,22 This preventive effect has been vastly discussed in the literature. 3,4,11,13 It is commonly associated with the different amounts of fluoride content between these materials and the fluoride exchange among glass-ionomer cements and teeth.…”

Influence of Different Mechanisms of Fluoride Release from Adhesive Systems

“…The fluoride released from the material is capable of interfering in the enamel demineralization process and on the oral microbiota, even under conditions of high caries risk (7,9,10,18). That was also the main purpose of introducing the fluoride-containing adhesive systems on the market (2,7).…”

“…Fluoride is important to the remineralization process of the tissue disorganized by caries, and it also interferes with dental plaque development and inhibits bacterial growth (6)(7)(8)(9)(10)(11). Therefore, fluoride-containing dental materials have been developed aiming at the reduction of secondary caries.…”