Aim. To verify the tolerance of children aged between 3 and 8 years, having class I caries and treated with Er:YAG laser in association with a new selfadhesive flowable resin in comparison with a highspeed diamond bur and a conventional flowable resin treatment.
Methods. A group of 80 healthy children (43 males and 37 females) ranging in age from 3 to 8 years, who had been diagnosed with at least one active occlusal non-cavitated superficial carious lesions in first or second deciduous molars, were selected for the present study. They were divided in 4 groups: group A: Class I occlusal cavities prepared using an Er:YAG laser and a self-adhesive flowable resin; Group B: Class I occlusal cavities prepared using an Er:YAG laser and a conventional flowable resin; Group C: Class I occlusal cavities prepared using a high-speed diamond bur and a self-adhesive flowable resin; Group D: Class I occlusal cavities prepared using a high-speed diamond bur and a conventional flowable resin. Before and after the treatments the patient tolerance was tested with the modified Wong-Baker pain level scale.
Results. In the first group, the tolerance rate was 95% with 0 score (no hurt) for 19 patients; in Group D, the tolerance rate was 75%. Just one child of group D experienced hurting worst because of non cooperative patient.
Conclusion. From these results it emerged that, although the limits of the study, Er:Yag laser in association with self-adhering composite, is very effective in pediatric dentistry and is a good treatment option especially for non cooperative patients.