Abstract
The present study aimed to determine the clinical effect of Nd: YAG laser exposure to dentin hypersensitivity in relation to periodontal therapy. After laser irradiation, the dental pulp vitality and adverse effects were assessed long-term. Thirty-three patients with 96 sensitive teeth participated in this study and were followed up for from 3 months to 6 years and 11 months. Hypersensitivity occurred in 24 teeth after brushing procedure, in 39 teeth after scaling procedure, and in 21 teeth after periodontal surgery. And there were 12 unknown trigger teeth. It was observed that no hypersensitivity reaction was felt after irradiation in 89 out of 96 teeth. A one-time laser irradiation resulted in 66.7% and 51.3% success after brushing and scaling procedures, respectively. However, several time exposures were required to resolve hypersensitivity in postsurgiCal cases, and that finally there is no effect on the dentin hypersensitivity after periodontal surgery in 5 teeth and 3 teeth in the case of unknown group. In addition, an electric pulp tester was used to determine teeth vitality. Before and after laser exposure, teeth vitality scores were recorded. Results showed that there were no differences obtained, between before and after treatment, in 61.1% of all the teeth. And, lower and higher scores in comparison with before treatment were observed. This may suggest that a more precise re-evaluation is necessary.
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