Dental Journal of Advance Studies

Rajender Singh ¹, Ashu Gupta ², Vishal Sharma ³

Affiliations
1 Department of Conservative Dentistry & Endodontics, Govt. Dental College & Hospital, Himachal Pradesh,, IN
2 Department of Conservative Dentistry & Endodontics Govt. Dental College & Hospital, Himachal Pradesh, IN
3 Department of Conservative Dentistry & Endodontics, Govt. Dental College & Hospital, Himachal Pradesh, IN

Abstract

This study was undertaken to evaluate the efficiency of two rotary nickel titanium instruments and hand instrumentation in removing gutta-percha and sealer from ischolar_main canals. 63 extracted human single ischolar_mained premolars were instrumented with K-files and filled using lateral compaction of guttapercha (GP) and three different sealers. The teeth were randomly divided into three experimental groups of 21 specimens each. Removal of gutta-percha was performed with R-Endo retreatment files, Mtwo retreatment files and Hedstrom files. Time to reach working length and to eliminate filling material was also recorded. The specimens were sectioned for evaluation of the area of the remaining gutta-percha/sealer under stereomicroscope at 6X magnification. Photographs were taken for further analysis using computer image analysis program. The results were statistically analyzed using Analysis of variance (ANOVA) and Tukey's honestly significant difference test. The R-Endo retreatment system resulted in a smaller percentage of canal area covered by residual GP/sealer than in other groups, a significant difference was found between R-Endo and Mtwo group and between Hedstrom groups (p < 0.001). The Mean operating time was minimum with R-Endo group while it was found to be maximum with hand files. It was concluded that all test techniques left gutta-percha/sealer remnants within the ischolar_main canal. The R-Endo retreatment files and Mtwo retreatment files system proved to be an efficient method for removing gutta-percha and sealer from single ischolar_mained premolars.

Keywords

Gutta-Percha, Root Canal Sealer, Rotary Instruments.

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Sandeep Singh Reyal ¹, Ashu Gupta ¹, Bhanu Pratap Singh ¹

Affiliations
1 Department of Conservative Dentistry & Endodontics, Govt. Dental College, Himachal Pradesh, IN

Abstract

Microleakage is the clinically detectable passage of bacteria, fluids, molecules or ions between a cavity wall and the restorative materials applied to it. This study was conducted to evaluate and compare the microleakage in Class II nanocomposite restorations, with resin-modified glass ionomer liner (group I), nanofilled flowable composite liner (group II)&without liner (group III). Thirty six non carious upper premolar teeth extracted for orthodontic purposes were selected. Standard class II cavities were prepared. The teeth were then randomly&equally divided into three groups with 12 teeth in each group. The teeth were subjected to thermocycling. After that apex of each tooth was sealed with acrylic resin and the teeth were painted with two coats of nail varnish, except for the area of 2mmfrom the periphery of the restorations. The coated teeth were immersed in buffered (pH 7) 0.5% methylene blue dye for 48 hours.Teeth were sectioned& observed under stereomicroscope of 10X magnification. At gingival level, Group I exhibited slightly lesser microleakage than group II but was not statistically significant. Group I showed no significant difference between microleakage at occlusal and gingival level (Z=1.732; P=0.083). However, in Group II and Group III, there was significantly greater microleakage at the gingival level (Z= 2.162 and 3.162; P= 0.002 and 0.002, respectively). Both resin-modified glass ionomer and flowable composite can be used as liners under nano composite restorations as reduction in microleakage was comparable.

Keywords

Microleakage, Flowable Composite, Glass Ionomer Cements, Methylene Blue.

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Ashu Gupta ¹, Saroj Thakur ¹, Rambhika Thakur ²

Affiliations
1 Department of Conservative Dentistry, H.P.G.D.C & H, Shimla, Himachal Pradesh, IN
2 Department of Periodontology, M.N.D.A.V. Dental College, Solan, Himachal Pradesh, IN

Abstract

The removal of a ischolar_main and the overlaying anatomic crown is referred to as a hemisection. A case with a complain of pain and bone loss till the apex of distal ischolar_main of 36 presented in the department of Endodontics, Government dental college, Shimla. The patient had increased desire to maintain the natural dentition. The decision was taken to hemi-sect the distal ischolar_main, as mesial bone and furcation bone was relatively unaffected. After phase I therapy, periodontal flap was reflected, area debrided and distal ischolar_main was resected. This article describes a procedure of hemisection in mandibular molar and its subsequent restoration. The key to long term success appear to be thorough diagnosis, selection of patients with good oral hygiene and careful surgical and restorative management.

Keywords

Periodontitis, Permanent Dental Restoration, Surgery.

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Ashu Gupta ¹, Saroj Thakur ¹, Vishal Sharma ¹, Anshu Minocha ¹, Bhanu Pratap Singh ¹, Rambhika Thakur ²

Affiliations
1 Deptt. Of Conservative Dentistry, H.P.G.D.C & H, Shimla. (H.P.), IN
2 Deptt. of Periodontology, M.N.D.A.V. Dental College, Solan. (H.P.), IN

Abstract

Variation of ischolar_main canal anatomy is always a challenge for accurate diagnosis and successful endodontic therapy. A thorough knowledge of most common anatomic characteristics and their possible variations is essential for the clinician. The hard tissue repository of the human dental pulp takes on numerous configurations and shapes. These aberrations occur so often that they can be considered as normal anatomy. Radix Entomolaris (RE) is one such aberration where an extra ischolar_main is present on the distolingual aspect of mandibular first molar (molar with 3 ischolar_mains). This article presents two case reports of mandibular first molars with extra ischolar_mains which was successfully treated.

Keywords

Radix Entomolaris, Anatomic Variations, Extra Roots, Endodontic Treatment.

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Sanjeev Chauhan ¹, Ashu Gupta ¹, Vishal Sharma ¹, Neeti Aggarwal ²

Affiliations
1 Dept. of Conservative Dentistry and Endodontics, H.P.G.D.C., Himachal Pradesh, IN
2 Dept. of Radiodiagnosis, I.G.M.C., Himachal Pradesh, IN

Abstract

Epidermoid cyst is a rare developmental cyst of the oro-facial region which results from entrapped epidermal elements with an incidence of 6.9-7% and represents less than 0.01% of all oral cavity cysts. PRF, as a physiologic fibrin matrix, serves as a net to stem cells, especially when an accelerated angiogenesis develops in the fibrin membrane .This aspect is of particular interest in the case of wide osseous defects. The Color Power Doppler detects minute areas of blood flow and the velocity of blood flow in healing bone by recording the change in frequency caused by the moving red blood cells. It demonstrates the progressive formation of new vessels in bone during the initial healing period. As the bone remodelling proceeds, there is a decrease in flow signals.

Keywords

Epidermoid Cyst, PRF, MTA, Color Power Doppler Ultrasonography.

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