Anaesthetic Efficacy of Topical Benzocaine Gel Combined with Hyaluronidase for Supplemental Intrapulpal Injection in Teeth with Irreversible Pulpitis- A Double Blinded Clinical Trial.

OBJECTIVE: Intrapulpal injection technique is one of the most commonly employed method to achieve profound pulpal anaesthesia during an endodontic procedure. To determine if the topical application of benzocaine gel along with hyaluronidase to the pulp chamber could reduce the pain felt with the intrapulpal injection technique. MATERIALS AND METHODS: Two hundred patients with chronic irreversible pulpitis undergoing endodontic treatment for mandibular first molars in which the primary anaesthetic technique failed were selected and randomly divided into 2 groups. In the control group intrapulpal injection was administered with backpressure. In the experimental group topical application of 20% benzocaine gel mixed with hyaluronidase was done over the exposed pulp following which intrapulpal injection was administered with backpressure. Pain assessment was done on a visual analogue scale. RESULTS: There was statistically significant difference (p<0.001) between the two groups. The mean value in the control group corresponded to the pain perception "strong", whereas that of the experimental group corresponded to the pain perception "weak". CONCLUSION: Topical application of 20% benzocaine gel mixed with hyaluronidase to the exposed pulp reduces the pain encountered with the intrapulpal injection.

Spiral computed tomographic evaluation and endodontic management of a maxillary canine with two canals.

Aberrations in the root canal system can pose a considerable challenge to the endodontist during root canal treatment. These anatomical variations are more commonly seen in maxillary molars and mandibular teeth, but only a few cases have been reported with alteration in the internal canal anatomy of maxillary canine. The present report describes the diagnosis of bilateral occurrence of two root canals in maxillary canines with single root and the endodontic management of the right maxillary canine with the aid of spiral computed tomography (CT). The CT images revealed the presence of Vertucci's type-III canal configuration in the right maxillary canine. The same canal pattern was found in the contra-lateral canine, which was absolutely healthy; and also all the mandibular anterior teeth and first premolars showed bifid canal pattern.

Management of recently traumatized maxillary central incisors by partial pulpotomy using MTA: Case reports with two-year follow-up.

In traumatized, young, permanent teeth, pulpotomy is classically undertaken to promote apexogenesis. The objective is to promote root development and apical closure. Once root end development and apical closure is achieved, the root canal treatment is completed. However, it has been suggested that mere pulp exposure does not cause pulpitis in the absence of bacteria. Recent studies have proposed that as long as a good seal is ensured, root canal treatment may not be necessary following pulpotomy. In this article we report two cases of traumatized, fully matured, maxillary permanent central incisors, which have been treated with mineral trioxide aggregate following partial pulpotomy, with a two-year follow-up.

Shear bond strength evaluation of resin composite bonded to GIC using three different adhesives.

The current study evaluated the bonding ability of composite to glass ionomer cement (GIC) using three different bonding systems. One hundred samples of composites bonded to GIC were prepared and divided into five groups. In Group A, the composite was bonded to GIC after the initial setting of the GIC being employed as a total-etch adhesive. In Group B, the self-etch primer was employed to bond composite to GIC before the initial setting of the GIC. In Group C, the self-etch primer was employed to bond composite to the GIC after the initial setting of the GIC. In Group D, the GIC-based adhesive was employed to bond composite to the GIC before the initial setting of the GIC. In Group E, the GIC-based adhesive was employed to bond composite to the GIC after the initial setting of the GIC. Shear bond strength analysis was performed at a crosshead speed of 0.5 mm/minute. The results were tabulated and the statistical analysis was performed with one-way ANOVA; the Tukey's test showed that the bond strength of composite to GIC was significantly higher for the self-etch primer group employed on unset GIC and the GIC-based adhesive group employed on the set GIC for bonding composite to GIC.