de Moura Marcoeli Silva, de Melo Simplício Alexandre Henrique, Cury Jaime Aparecido
Department of Pathology and Clinical Dentistry, Federal University of Piauí, Teresina, PI, Brazil.
Am J Orthod Dentofacial Orthop. 2006 Sep;130(3):357-63. doi: 10.1016/j.ajodo.2004.12.026.
The effect of a fluoridated antiplaque dentifrice on the development of caries lesions adjacent to dental appliances bonded with ionomeric material is unknown.
Fourteen orthodontic patients were randomly divided into 2 groups of 7. One group brushed 3 times a day with a fluoridated dentifrice, and the other used an experimental antiplaque fluoridated formulation. Bracket bases were randomly bonded with either resin-modified glass ionomer cement or composite resin to the buccal surfaces of either the maxillary left or right premolars in each subject. The teeth were banded, leaving a space on the buccal surface to allow dental plaque accumulation. After 28 days of dentifrice use, the teeth were extracted, and mineral loss in the enamel adjacent to the bonded material was assessed by cross-sectional microhardness.
Mineral loss in the enamel surrounding the bond with the resin-modified glass ionomer cement was lower (P <.05) than around the composite bond. Enamel demineralization was lower (P <.05) in subjects who used the experimental antiplaque fluoridated formulation than in those who used the fluoridated one.
The data suggest that an antiplaque fluoridated dentifrice is superior to one that is only fluoridated for reducing enamel demineralization adjacent to dental material bonded with composite, but the effect seems irrelevant when bonding is done with the ionomeric material.
含氟防龋牙膏对与用离子性材料粘结的牙科矫治器相邻的龋损发展的影响尚不清楚。
14名正畸患者被随机分为两组，每组7人。一组每天用含氟牙膏刷牙3次，另一组使用实验性含氟防龋配方。在每个受试者的上颌左侧或右侧前磨牙的颊面，用树脂改性玻璃离子水门汀或复合树脂随机粘结托槽基底。给牙齿结扎带环，在颊面留出空间以便牙菌斑积聚。使用牙膏28天后，拔除牙齿，通过横断面显微硬度评估粘结材料附近釉质的矿物质流失。
与树脂改性玻璃离子水门汀粘结处周围釉质的矿物质流失低于（P <.05）复合树脂粘结处周围。使用实验性含氟防龋配方的受试者的釉质脱矿程度低于（P <.05）使用含氟牙膏的受试者。
数据表明，含氟防龋牙膏在减少与用复合树脂粘结的牙科材料相邻处的釉质脱矿方面优于仅含氟牙膏，但在用离子性材料粘结时，这种效果似乎不相关。
