ABSTRACT
This case report describes the management of a large furcation perforation in a maxillary first molar. Although the majority of the pulpal floor was destroyed and the mesiobuccal root was damaged, an attempt was made to repair the defect and restore the tooth. An absorbable gelatin sponge matrix was placed, and the defect was repaired with gray ProRoot mineral trioxide aggregate. Subsequently the endodontic treatment was completed; the tooth was restored and was later used as a fixed partial denture abutment. A 55-month recall showed no evidence of periodontal breakdown, no symptoms, and complete healing of all periradicular lesions.
Subject(s)
Aluminum Compounds/therapeutic use , Calcium Compounds/therapeutic use , Dental Instruments/adverse effects , Oxides/therapeutic use , Root Canal Filling Materials/therapeutic use , Root Canal Preparation/adverse effects , Silicates/therapeutic use , Tooth Root/injuries , Aged , Alveolar Process/injuries , Drug Combinations , Extravasation of Diagnostic and Therapeutic Materials/etiology , Follow-Up Studies , Humans , Male , Molar/injuries , Root Canal Therapy/methodsABSTRACT
The aim of this in vitro study was to compare the sealing ability of Resilon/Epiphany to gutta-percha and Roth or AH Plus sealers. Leakage of the obturated roots was measured using the fluid filtration technique. There were eight groups of 12 teeth each. Group 1: obturated with Resilon/Epiphany; group 2: obturated with gutta-percha/Roth, allowed to set for 3 wk; group 3: obturated with gutta-percha/Roth; group 4: obturated with Resilon/Epiphany using a single cone; group 5: obturated with Resilon cones without using primer/sealer (positive control); group 6: obturated with gutta-percha/AH Plus; group 7: same as group 6, but allowed to set for 8 h; and group 8: sealed on the outside with three layers of nail varnish (negative control). The results showed that only the positive control (group 5) leaked significantly more (p < 0.05) than the other groups. There was no effect of time on leakage. Resilon/Epiphany was no better than gutta-percha/Roth or gutta-percha/AH Plus at sealing root canals.
Subject(s)
Dental Leakage/prevention & control , Gutta-Percha/chemistry , Root Canal Filling Materials/chemistry , Analysis of Variance , Epoxy Resins/chemistry , Humans , Longitudinal Studies , Zinc Oxide-Eugenol Cement/chemistryABSTRACT
The use of nickel-titanium rotary instrument systems has gained popularity over the past 10 years. One of these instrument systems is the LightSpeed (LightSpeed Technology, Inc, San Antonio, TX). One drawback for all nickel-titanium rotary instruments is the incidence of instrument separation. The purpose of this study was to evaluate the incidence of nonretrievable instrument separation using the LightSpeed system in a clinical setting. A total of 3543 canals were treated over a 24 month period and during that time, 46 LightSpeed instruments were separated and found to be nonretrievable, resulting in a separation rate of 1.30%. This rate was lower than previous reported studies.
