An In Vitro Study of Gutta Percha Removal Commencing from the Root Canal Undergoing Endodontic Retreatment using Different Rotary Instrumentation Systems.

Background: In the root canal, the tenacity of microbial infection in either or both the periradicular area is the utmost communal source of endodontic failure. The majority of the gutta percha is removed using hand and rotational equipment. Aim of Study: To determine gutta percha removal by effectively utilizing three rotary instrumentation devices all through the endodontic retreatment. Objective of Study: To determine amongst the three Nickle-Titanium systems which one is significantly effective in retreatment along with comparison of retreatment efficiency using or avoiding the utilization of solvent. Materials and Methods: On 60 newly extracted, single-rooted mandibular premolars, every root canal was sealed using gutta percha and AH Plus sealer utilizing lateral compaction. After that, the samplings were separated into three investigational groups, each with 20 specimens. After that, individual groups were separated into ten specimens. After that, the groups were withdrawn with or without solvent. ProTaper retreatment files, Mtwo retreatment files, and R-Endo files were utilized to eradicate the gutta percha after two weeks. The extent of root canal filling material left in the coronal, middle, and apical thirds was recorded utilizing a stereomicroscope and a computer image processing program. The data was statistically examined using analysis of variance. Result: The ProTaper group exhibited a smaller amount of remnant filling material than the supplementary groups in the coronal and middle thirds; however a significant difference amid ProTaper and Mtwo, and Mtwo and R-Endo in the nonsolvent groups (P = 0.05) was concluded. In the nonsolvent group, the Mtwo group showed less leftover filling material. Conclusion: The elimination of root canal filling material was found to be equally effective in all systems. However, not a single experimental group could entirely eradicate gutta percha from the root canal.

Efficacy of Routinely used Analgesics in Management of Pulpal Pain Postoperatively a Clinical Study.

AIM: The aim of this study was to evaluate the efficacy of various routinely used analgesics in the management of pulpal pain preoperatively. MATERIALS AND METHODS: A total of 150 patients were randomly selected and divided into five groups each. At initial visit, a self-administered questionnaire was given, and patients were asked to mark on the Visual Analog Scale (VAS) indicating severity of pain at that moment which is taken as a pretreatment VAS score. Group I patients received aceclofenac + paracetamol, Group II: ketorolac tromethamine, Group III: lornoxicam + paracetamol, Group IV: tramadol + paracetamol, and Group V: paracetamol. All the patients are requested to record their pain levels at 4 h, 6 h, 8 h, 24 h, and 48 h by means of VAS scores before and after treatment. RESULTS: There was no significant decrease in frequency of pain when compared in the first three groups, whereas in Group III and Group IV, the patients experienced an effective reduction in pain because of sustained releasing ability of these drugs. Overall, there was no statistically significant differences among all the groups. CONCLUSION: This study suggests that there was no significant difference in reduction of pain preoperatively. However, lornoxicam + paracetamol and tramadol + paracetamol were effective because of their sustained releasing ability. Ketorolac was effective to reduce the pain for shorter duration. Paracetamol can be advised in compromised patients where safety is concerned.

Calcifying Epithelial Odontogenic Cyst of Maxilla: A Clinical and Histological Rarity with Literature Review.

A cyst is defined as a pathological cavity which may or may not have an epithelial lining and which has a fluid, semi-fluid, or gaseous contents and is not formed by the accumulation of pus. The calcifying epithelial odontogenic cyst (CEOC) was first reported by Gorlin et al. in 1962. At that time, it was classified as a cyst related to the odontogenic apparatus. It was later renamed as calcifying cystic odontogenic tumor (CCOT) in the World Health Organization classification devised in 2005 due to its histological complexity, morphological diversity, and aggressive proliferation. CCOT was later recognized by numerous names including Gorlin cyst, calcifying ghost cell odontogenic cyst and/or dentogenic ghost cell tumor. It has a peak incidence during the second and third decades of life and does not demonstrate any gender predilection. Radiographically, CEOC may appear as a unilocular or multilocular radiolucent lesion with either well-circumscribed or poorly-defined margins and may also be observed in association with unerupted teeth. Calcification is an important radiographic feature for the interpretation of CEOC/CCOT. The typical histopathological features of CEOC include a fibrous wall and lining of the odontogenic epithelium with either columnar or cuboidal basal cells resembling ameloblasts. The treatment of choice for CEOC is conservative surgical enucleation; however, recurrence is also not found to be uncommon. Herein, we are reporting a case of the same in a 21-year-old female which was a great dilemma during the diagnostic workup.

Impact of Surface Treatment with Different Repair Acrylic Resin on the Flexural Strength of Denture Base Resin: An In Vitro Study.

AIM AND OBJECTIVE: The aim and objective of the present study was to assess the flexural strength of denture base resin based on surface treatment with different acrylic resin repair materials. MATERIALS AND METHODS: Totally, 120 heat-polymerized polymethyl methacrylate denture base resin materials which are rectangular shaped with the size of 65 mm × 10 mm × 2.5 mm were fabricated. 150 µm-sized alumina used for surface treatment. All the 120 heat-cured, surface-treated acrylic denture base resin samples were randomly divided into three groups. Group I: glass-fiber-reinforced auto-polymerizing acrylic resin, group II: auto-polymerizing acrylic resin, and group III: light-cured acrylic resin. A universal testing machine was used to test the flexural strength of the repaired specimens. RESULTS: A highest mean flexural strength (88.96 ± 0.31) was demonstrated by group I, followed by group II (72.18 ± 1.86) and group III (66.30 ± 1.02). ANOVA demonstrated a statistically significant inter-group difference. On multiple comparisons, using Tukey's post hoc test a statistically significant difference between groups I and II and between groups I and III was found. CONCLUSION: After considering the limitations, the present study concluded that the highest flexural strength is shown by glass-fiber-reinforced auto-polymerizing acrylic resin than by auto-polymerizing acrylic resin and light-cured acrylic resin. CLINICAL SIGNIFICANCE: Denture repair comprises of joining two fractured parts of a denture with a denture repair material. The success of denture repair depends on the adhesion phenomenon. The treatment of the surface can be accomplished using a suitable material which changes chemically and morphologically and thus promotes better adhesion.