The pulpal effect of freezing temperatures applied to monkey teeth.
When temperatures below -80 degrees C, are applied to intact monkey teeth via a liquid nitrogen probe for 1, 2, or 3 minutes, an increasing degree of pulpal damage occurs, but all pulps remain vital. The lesion appears to be predictable and is characterized by a distinct layer of coronal secondary dentin with cellular inclusions, odontoblast destruction, and microvascular injury. The root pulp remains essentially healthy and uninflamed. Periodontal and root tissue damage was also observed.
D000818:Animals; D003080:Cold Temperature / Q000009:adverse effects*; D003782:Dental Pulp / Q000293:injuries* / Q000473:pathology; D003809:Dentin, Secondary / Q000033:anatomy & histology; D005615:Freezing; D000882:Haplorhini; D009584:Nitrogen / Q000008:administration & dosage; D013997:Time Factors
D009584:Nitrogen