電磁波刺激を応用した根尖性歯周炎への対応

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  • Application of electromagnetic stimulation to apical periodontitis

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<p>Abstract : Disinfection of the root canal system is essential in endodontic therapy. However, due to the complex anatomical morphology, it is impossible to completely eliminate infecting microorganisms. We have reported that electromagnetic stimulation has an activating effect on osteoblastic cells as well as a bactericidal effect and suggested that direct electromagnetic stimulation may be applicable for refractory apical periodontitis. Consequently, we developed Electro-Magnetic Apical Treatment (EMAT), with the aim of promoting rapid healing of periodontal tissue. The purpose of this study was to assess the efficacy of EMAT for apical periodontitis.</p><p> Methods : 74 maxillary anterior teeth with periapical lesions (>5.0 mm in diameter) were treated. 37 teeth were stimulated by the EMAT device, and 37 teeth were not stimulated. Radiographic follow-up was performed to evaluate the healing effect at 12 months postoperatively.</p><p> Results : The success rate (97.3%) in the EMAT group was statistically higher (p<0.01) than that in the non-stimulated group (73.0%). In the successful cases, the average reduction rate of periapical lesions was 9.7±5.2%/month in the EMAT group, which was significantly higher (p<0.01) compared with the non-stimulated group (4.9±1.7%/month).</p><p> Conclusions : These results suggest that EMAT accelerates the healing process of periodontal tissue.</p>

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