Endodontic management of root perforating internal replacement resorption.

This case report presents the management of a case of rarely seen perforating internal replacement resorption using calcium hydroxide (CH) medication and mineral trioxide aggregate (MTA) root canal obturation. A maxillary central incisor of a 20-year-old female was showing a sinus track on the mucosa. Radiographically, an irregularly shaped and perforating internal resorption area was seen at the middle third of the root canal. Appearances of the bone-like fuzzy material were observed inside the resorption site. The apical part of the canal was obliterated. Following 3 months of CH medication, the canal and the perforation were obturated with MTA filling. At 6-year follow-up, the tooth was clinically asymptomatic and showing radiographical appearances of the hard tissue repair, resembling a barrier and periodontal membrane healing around MTA at the perforation site.

Comparison of four electronic root canal length measurement devices.

OBJECTIVE: The objective of this study is to evaluate the performance of four electronic root canal length measurement devices (ERCLMDs) [Root ZX, Raypex 6, ProPex II, and VDW Gold with ERCLMD] in wet and dry root canals with different major foramen diameters, in association with three file positions within the final 1 mm of canals. MATERIALS AND METHODS: Fifty roots were divided into five groups that were instrumented apically to the terminus diameter using K-files 15, 20, 30, 40, and 60. ERCLMD measurements were made when the file tip was at major foramen, 0.5 mm and 1.0 mm short of the foramen, when the apex touched to the surface of saline or was immersed 3 mm into saline, and when the canal was dry or was irrigated with saline. The differences between the electronic lengths and the actual lengths were calculated. The data were analyzed using the three-, two-, and one-way ANOVA and the LSD test (p < .05). RESULTS: Overall, the four ERCLMDs demonstrated 12.8% unstable and beyond the foramen measurements (11.3%). About 85% of the beyond the foramen measurements had foramen diameters 0.40 and 0.60. ERCLMD comparisons related to the file positions in the foramen diameters showed significant differences between ERCLMDs in each foramen diameter (p < .05). CONCLUSIONS: All ERCLMDs provided highly accurate measurements within the final 1 mm of the foramen. Wet or dry canals and apex conditions did not adversely affect the accuracy of the ERCLMDs' readings. ProPex II located the file positions in the teeth with different foramen diameters more accurately than the other ERCLMDs.

Intraradicular splinting of a horizontally fractured central incisor: a case report.

This case report presents the endodontic management of a horizontally fractured right incisor involving healing with granulation tissue using an intraradicular splinting technique. We also discuss the spontaneous healing of the fractured left central incisor with calcified tissue. A composite resin splint was made for all of the upper anterior teeth. The root canal of the right incisor was temporarily filled with calcium hydroxide slurry. The intraradicular splinting involved placing a file in the canal. Sealer was introduced into the canal and then a no. 110 K file was fixed in the canal with polycarboxylate cement. The tooth was asymptomatic and the composite splint was removed after 1 month. The right incisor appeared normal clinically and radiographically at the 30-month recall. This case demonstrates that intraradicular splinting can be used to manage horizontally fractured teeth with necrotic and mobile coronal segment.