关键词: 化学机械去龋, 玻璃离子水门汀, 过渡性充填, 重度低龄儿童龋, 继发龋

Abstract: Objective    To investigate the clinical efficacy of CarisolvⅢ chemomechanical caries removal combined with glass ionomer cement（GIC）in transitional filling repair technology for severe early childhood caries（SECC）. Methods     Totally 106 children with SECC（176 teeth）who visited the Department of Pediatric Stomatology of Jining Stomatological Hospital from June 2021 to June 2022 were selected. According to the random number table method，all children were divided into 4 groups，and according to the caries removal method（CarisolvⅢ chemomechanical caries removal，turbine caries removal）and filling method（GIC filling，composite resin filling），they were recorded as follows：chemical caries removal+GIC group（27 cases，46 teeth），chemical caries removal+resin group（27 cases，48 teeth），turbine caries removal+resin group（26 cases，40 teeth），and turbine caries removal+GIC group（26 cases，42 teeth）. A self-made emotional evaluation scale for children was used to compare the proportion of children with poor emotions in each group. Compare the success rates of each group at 3，6，and 12 months after treatment，as well as the occurrence of filling fracture or falling off and secondary caries at 12 months after treatment. Results    The proportion of children with poor emotions in the four groups was statistically different（χ2 = 10.638，P = 0.014），and the proportion of children with poor emotions in the chemical caries removal+GIC group（29.6%）was significantly lower than that in the turbine caries removal+resin group（69.2%）（χ2 = 8.312，P = 0.0039）. After 3，6，and 12 months of treatment，the success rates of the four groups were compared，and the difference was not statistically significant（all P > 0.05）. After 12 months of treatment，there was a statistically significant difference in the incidence of fracture or falling off of filling materials and secondary caries among the four groups（all P < 0.05）. Among them，compared to the chemical caries removal+resin group（0.0%），the chemical caries removal+GIC group（15.2%）had a higher incidence of filling fracture or falling off；compared to the turbine caries removal+resin group（25.0%），the chemical caries removal+GIC group（4.3%）had a lower incidence of secondary caries（all P < 0.0083）. Conclusion    For children with SECC，CarisolvⅢ chemomechanical caries removal combined with GIC for transitional filling repair has good clinical efficacy. Compared to traditional turbine caries removal combined with resin filling，it can improve the emotional control ability of children and reduce the risk of secondary caries. However，when applied to Class Ⅰ deep caries involving the buccal and lingual surfaces，it is prone to the fracture or partial falling off of the filling material.

Key words: chemomechanical caries removal, glass ionomer cement, transitional filling repair, severe early childhood caries, secondary caries