Abstract:Objective To investigate the effect of Carisolv micro-invasive caries removal combined with 3M composite resin filling in the treatment of dental caries in children.Methods A total of 106 children with dental caries admitted to Yulin First Hospital from October 2021 to October 2023 were included in the study. Patients were randomly divided using the odd-even method, with 53 children in the control group and 53 children in the observation group. The control group received traditional mechanical caries removal combined with 3M composite resin filling, while the observation group received Carisolv micro-invasive caries removal combined with 3M composite resin filling. The repair effectiveness, pain level before and after treatment (measured by the FLACC scale), periodontal indicators [gingival index (GI) and plaque index (PLI) ], compliance (measured by the Frankl compliance scale), tolerance (measured by the Houpt behavior scale), and incidence of complications were compared between the two groups.Results The comparison of total effectiveness rates between the control group and the observation group showed a statistically significant difference (P < 0.05). The comparison of pain levels between the two groups using the rank-sum test also revealed a statistically significant difference (Z = 28.610, P = 0.000), with the observation group reporting lower pain levels than the control group. There were no statistically significant differences in gingival index (GI) and plaque index (PLI) between the two groups before treatment (P > 0.05). However, after treatment, both GI and PLI were significantly lower in the observation group compared to the control group (P < 0.05), and the changes in GI and PLI from pre- to post-treatment were also significantly greater in the observation group (P < 0.05). There were no statistically significant differences in Frankl and Houpt scores between the groups before treatment (P > 0.05), but after treatment, the observation group had significantly higher Frankl and Houpt scores than the control group (P < 0.05). The differences in Frankl and Houpt scores before and after treatment were significantly greater in the observation group than in the control group (P < 0.05). The incidence of complications was significantly lower in the observation group compared to the control group (P < 0.05).Conclusion Carisolv micro-invasive caries removal combined with 3M composite resin filling is more effective than traditional mechanical caries removal in the treatment of pediatric dental caries. It effectively reduces pain, improves repair outcomes, enhances periodontal health, increases patient compliance, and reduces the incidence of complications.