Guided endodontic therapy: Management of pulp canal obliteration in the maxillary central incisor.

This is a case report of the management of pulp canal obliteration of maxillary central incisor using guided endodontic therapy. Patient reported with discolored and proclined 11. Intraoral periapical (IOPA) Radiographs and cone-beam computed tomography (CBCT) showed periapical radiolucency. The canal was obliterated till the middle third and was patent in the apical 7 mm. Root canal treatment (RCT) was planned using guided endodontics. Information of CBCT and digital surface scan were integrated using Blue Sky Bio software. A transparent three-dimensional (3D) model of the tooth and stent, designed with a sleeve for insertion of bur, was 3D-printed using clear resin. After orientation was found satisfactory on the 3D model, access opening was initiated with the orientation of round bur through the stent. IOPAs were taken after preparation of every 3 mm. The canal was located in the apical third. Cleaning and shaping were performed, and RCT completed successfully. Guided endodontic therapy is useful in the management of calcifications in anterior teeth.

Comparative evaluation of surface hardness and depth of cure of silorane and methacrylate-based posterior composite resins: An in vitro study.

AIM: This in vitro study was carried out to compare the effect of LED light curing system on polymerization and hardness of silorane-based and methacrylate-based posterior composite resin. MATERIALS AND METHODS: A total of 40 samples, 20 of silorane-based composite Filtek P-90 and 20 of methacrylate-based composite Heliomolar HB measuring 2 mm thickness and 8 mm diameter were prepared using Teflon molds and cured using LED curing light. The samples were polished and tested in Knoop hardness tester using a 50-gram load and dwell time of 15 seconds on top and bottom surfaces. The percentage depth of cure was calculated, and statistical analysis was performed using two-way ANOVA test and Student t- test. RESULTS: Higher statistically significant values were seen for both the top and bottom surface hardness in silorane-based resins than methacrylate-based resins on LED light curing. CONCLUSION: Greater depth of cure was achieved in silorane-based posterior composite than in methacrylate-based posterior composite resins with a statistically significant difference.

Use of quartz fiber post for reattachment of complex crown root fractures: A 4-year follow-up.

Dental hard tissue trauma is among the most common cases encountered in dental practice. Simple tooth fractures, which occur due to sharp blows, are widely seen in all age groups, especially in young adults. If in case of complex fractures the fractured tooth fragments are available to the dentist in a clean and hydrated state, reattachment of the tooth fragment is the most conservative and biological treatment option possible. Cases of enamel and dentin fractures not involving pulp are treated by reattaching the fragment with adhesives and composite resin. However, fractures involving the pulp require reinforcement by quartz fiber posts and resin luting cement. In cases of fractures extending subgingivally, an envelope flap helps to achieve the desired isolation and visibility. This article presents 2 case reports of reattachment of fractured tooth fragments. The first case showing a 4-year success was treated without raising a flap. The second case with a subgingival fracture was treated by raising a flap. Reattachment is the most economical, biologically acceptable and esthetic restorative option for dental trauma.