title: Application of high-frequency radio waves to direct pulp capping.
abstract: BACKGROUND
  In vital pulp therapy such as direct pulp capping, clinical success rates depend on achieving hemostasis in exposed pulp tissue. For hemostasis of exposed pulp tissue, gentle pressure by cotton pellets moistened with sodium hypochlorite is most commonly used. However, more rapid and reliable methods are necessary. Therefore, we focused on high-frequency radio waves (HRW).
  
  
  METHODS
  To evaluate reparative dentin induction by HRW, we used a rat direct pulp capping model and performed hemostasis by using HRW of several strengths, covering the pulp with calcium hydroxide as a direct capping agent. After 14 or 28 days, rats were killed, and reparative dentin and pulp inflammation were investigated histologically.
  
  
  RESULTS
  Radio wave-induced hemostasis required less time when compared with the control group. Reparative dentin with regularly arranged dentinal tubules was observed in the HRW group.
  
  
  CONCLUSIONS
  HRW induce hemostasis and produce high-quality reparative dentin and reduced pulpal inflammation.
authors: Division of Clinical Cariology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan. khanda@hoku-iryo-u.ac.jp
authors: Keisuke
authors: K
authors: Handa
authors: Toshiyuki
authors: T
authors: Koike
authors: Keijiro
authors: K
authors: Hayashi
authors: Takashi
authors: T
authors: Saito
mesh_terms: D000818:Animals; D002126:Calcium Hydroxide / Q000627:therapeutic use; D003785:Dental Pulp Capping / Q000379:methods*; D003789:Dental Pulp Exposure / Q000188:drug therapy / Q000532:radiotherapy; D003809:Dentin, Secondary / Q000187:drug effects / Q000473:pathology / Q000528:radiation effects; D006489:Hemostatic Techniques; D006861:Hydrogen Peroxide / Q000627:therapeutic use; D008297:Male; D023421:Models, Animal; D009804:Odontoblasts / Q000187:drug effects / Q000473:pathology / Q000528:radiation effects; D057872:Pulp Capping and Pulpectomy Agents / Q000627:therapeutic use; D011671:Pulpitis / Q000145:classification / Q000517:prevention & control; D000078702:Radiofrequency Therapy; D051381:Rats; D017208:Rats, Wistar; D012973:Sodium Hypochlorite / Q000627:therapeutic use; D013997:Time Factors
chemical_list: D057872:Pulp Capping and Pulpectomy Agents; D006861:Hydrogen Peroxide; D012973:Sodium Hypochlorite; D002126:Calcium Hydroxide
keywords: Calcium hydroxide; direct pulp capping; hemostasis; high-frequency radio waves