歯牙外傷に関する臨床的検討, 特に電気刺激に対する歯髄反応について

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This study was designed in order to clarify the mode of response of dental pulps in teeth injured by trauma and time-course changes. The response of dental pulps to electrostimulation after trauma was studied by a follow-up examination of 14 patients with anterior teeth in and around mandibular fractures and subluxation of the mandibular anterior teeth involving 30 teeth. The following results were obtained.<BR>1. 46.7% of all teeth which responded negatively to electric stimulation at the time of injury showed positive sensibility after a varing time period: In the cases of subluxation of the teeth, electric dental pulp testing turned positive in 33.3%. On the other hand, in the cases of teeth in and around fracture lines, electric pulp testing turned positive in 52.4%.<BR>2. The electric pulp testing became positive most frequently 2 or 3 months after trauma. Subluxation of teeth was relatively earlier in recovery of the pulp response than teeth in and around fracture lines.<BR>3. In surgical treatment of mandibular fractures, electric pulp testing became positive in 87.5%. On the other hand, in conservative treatment of mandibular fractures, electric pulp testing became positive in 30.8%.<BR>4. The incidence of positive sensibility in electric pulp testing was 87.5% in Type I, 80% in Type II and 0% in Type III. The surgical treatment of mandibular fractures in Type II was relatively higher in incidence of recovery of pulp response than that in Type I.
社団法人日本口腔外科学会の論文

歯牙外傷に関する臨床的検討, 特に電気刺激に対する歯髄反応について

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