Conservative Dentistry and Endodontic Journal最新文献

{"title":"Reattachment of Complicated Crown: Root Fracture: A Case Report","authors":"K. Nair, P. Geetha, Amal Devadas, Deepak Joby, Sreelekshmy Chandrababu","doi":"10.5005/jp-journals-10048-0070","DOIUrl":"https://doi.org/10.5005/jp-journals-10048-0070","url":null,"abstract":"","PeriodicalId":129095,"journal":{"name":"Conservative Dentistry and Endodontic Journal","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123587140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retreatment of a Chronically Infected Mandibular Molar with Missed Middle Mesial Canal: A Case Report","authors":"K. Nair, P. Geetha, S. Saji, Abraham Ashwin Eugine, CS Sreepooja","doi":"10.5005/jp-journals-10048-0069","DOIUrl":"https://doi.org/10.5005/jp-journals-10048-0069","url":null,"abstract":"Aim and background: A major cause of the failure of root canal therapy is the inability to locate and treat all the canals of the root canal system. Magnification and ultrasonics are valuable aids in negotiating missed canals. In case of root canal failures with long-standing lesions, a combination of non-surgical retreatment followed by a surgical approach would be more beneficial. Case description: This case report describes the management of a mandibular molar with a missed middle mesial canal. The canal was negotiated with the help of magnification and ultrasonics. Since it was a long-standing lesion, a surgical intervention was done after the completion of non-surgical retreatment. Conclusion: Untreated root canals may have a direct impact on the prognosis of root canal treatment resulting in chronic periapical infection. Development in techniques and armamentarium has led to successful identification and instrumentation of missed canals. A surgical approach for a long-standing lesion ensures complete healing.","PeriodicalId":129095,"journal":{"name":"Conservative Dentistry and Endodontic Journal","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132646882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Evaluation of Microhardness of Radicular Dentin by Using Different Herbal Extracts (Azadirachta indica, Morinda citrifolia, Green Tea) as Root Canal Irrigant: An In Vitro Study","authors":"Durgabhavani Gondi, Prasanthi Gonapa, T. Rathod, Paramesh Yelloji, C. Arjun","doi":"10.5005/jp-journals-10048-0067","DOIUrl":"https://doi.org/10.5005/jp-journals-10048-0067","url":null,"abstract":"Aim and objective: To evaluate the effect of different herbal extracts such as Azadirachta indica , Morinda citrifolia , and green tea on the microhardness of radicular dentin and compare the effects of these herbal extracts with 2.5% sodium hypochlorite and saline. Materials and methods: In all selected 60 single-rooted, human permanent teeth, standardized access opening and working length determination were done. Later, instrumented to the apical size of 30 (F3) with ProTaper universal using saline. Each tooth was sectioned longitudinally using a low-speed diamond disc into two halves. Then, one-half without any defects was selected and embedded horizontally in auto-polymerizing acrylic resin, by exposing their dentin. The dentine surfaces on either side of the root canal lumen of these mounted specimens were flattened and smoothened with series of ascending grades of silicon carbide abrasive paper and finally polished with a composite polishing kit and 0.1-mm alumina suspension on a rotary felt disk. Then, all teeth were divided into five groups ( n = 12) group I: saline, group II: 2.5% sodium hypochlorite, group III: A. indica , group IV: M. citrifolia , and group V: green tea, based on final irrigant. Initial and posttreatment microhardness was recorded using Vickers microhardness tester at coronal, middle, and apical third. Results: Group II and group IV showed statistical significance ( p < 0.05) between initial and posttreatment values, while group I, group III, and group V, had no significance ( p > 0.05). In comparison between group II and group IV, no significant difference was seen. Conclusion: Among herbal extracts, M. citrifolia leads to structural changes in radicular dentin due to demineralizing effect on root canal dentin.","PeriodicalId":129095,"journal":{"name":"Conservative Dentistry and Endodontic Journal","volume":"130 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124953708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smear Layer Removal by Means of Erbium, Chromium:Yttrium Scandium Gallium Garnet (Er,Cr:YSGG) Laser Irradiation from Apical Third of Mesial Root Canals","authors":"Evrykleia Kourti, D. Strakas, Ourania Pantelidou-Papadopoulou, K. Tolidis","doi":"10.5005/jp-journals-10048-0066","DOIUrl":"https://doi.org/10.5005/jp-journals-10048-0066","url":null,"abstract":"Aim: This ex-vivo study evaluated the efficiency of an Er, Cr: YSGG laser (2780 nm) at different power settings to remove smear layer from the apical third of mesial roots of first lower molars by using SEM. Materials & Methods: 42 mesial root canals of first mandibular molars (type II Vertucci) were divided into 4 groups of 10 teeth each. The rest 2 teeth were used as control groups. After coronal access, all teeth were instrumented by Protaper Gold rotary files up to size F2 (25/0.08), followed an irrigation protocol with saline. Then, the experimental groups were irradiated by Er, Cr: YSGG laser. Four different output powers were tested, namely 1.25 W, 1.5 W, 2 W, 2.5 W was used to irradiate the roots in Group 1 (G1), Group 2 (G2), Group 3 (G3) and Group 4 (G4) respectively. Control group (n=2) was instrumented as experimental groups but not irradiated. Teeth were sectioned longitudinally and observed under SEM. Results were statistically analyzed with the Kruskal-Wallis Test and Mann-Whitney Test. Results: None of the tested groups succeeded in removing completely the smear layer from apical dentinal walls. The results showed no statistically significant differences between laser groups in removing smear layer from apical third of lower molars. Group 3 (2 W) showed better outcomes but it was not statistically significant. Conclusion: The outcome of the present study showed that laser-assisted smear layer removal with an Er, Cr: YSGG laser with the tested parameters is not predicable for the apical third of root canals. Clinical significance: The presence of chelating factor may play an important role in the mechanism of laser-assisted removal of smear layer in the apical third of root canals. Further research needs to be performed in order to find the optimal irradiation protocol.","PeriodicalId":129095,"journal":{"name":"Conservative Dentistry and Endodontic Journal","volume":"18 771 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115347626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Evaluation of the Apical Sealing Ability of Two Root Canal Sealers Using the Two Different Placement Techniques: An In Vitro Study","authors":"Baby James, A. Devadathan, Manuja Nair, J. Jacob, S. Pallavi, NJ Nagaraj","doi":"10.5005/jp-journals-10048-0059","DOIUrl":"https://doi.org/10.5005/jp-journals-10048-0059","url":null,"abstract":"Aim: To compare and evaluate the effect of two different sealer placement techniques on the apical sealing ability of MTA Fillapex and AH Plus root canal sealers. Materials and methods: Study was performed on 40 extracted human single-rooted permanent teeth, which were decoronated and the root canals were instrumented. The specimens were randomly divided into four groups and obturated using single-cone technique. Group IA: Using AH Plus sealer; placed using master gutta percha (GP) cone, group IB: Using AH Plus sealer; placed using size 30 lentulospiral, group IIA: Using MTA Fillapex; placed using master GP cone, and group IIB: Using MTA Fillapex; placed using size 30 lentulospiral. Microleakage was evaluated using dye penetration method. Teeth were split longitudinally and then horizontal markings were made at 1.5, 4, and 6 mm from the apex. Dye penetration evaluation was performed under stereomicroscope (4 × magnification) and statistically evaluated. Results: The lowest microleakage values were obtained with group IIB (MTA Fillapex placed using lentulospiral) and the highest with group IA (AH Plus placed using mastercone). Conclusion: Within the limitations of the study, MTA Fillapex sealer placed using lentulospiral achieved highest apical seal among the experimental groups. Though leakage cannot be totally eliminated from the fate of a root canal treated teeth, the type of root canal sealer and its placement plays a major role in the success of an endodontic treatment.","PeriodicalId":129095,"journal":{"name":"Conservative Dentistry and Endodontic Journal","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126773328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Management of Separated Irrigating Needle within Root Canal: A Case Report","authors":"K. Nair, P. Geetha, Rasheeda Shamshu, P. Paul","doi":"10.5005/jp-journals-10048-0054","DOIUrl":"https://doi.org/10.5005/jp-journals-10048-0054","url":null,"abstract":"Background: Irrigation is an integral part of successful root canal treatment. Syringe and needle irrigation is an effective method to control microbial flora of the root canal. Needle with multiple vents efficiently delivers irrigating solutions. Geometric configuration of the irrigating needle may predispose it to fracture during irrigation. A fractured needle causes procedural difficulties during treatment. Careful removal of the fragment with minimal tissue loss improves the prognosis of the treatment. Case description: This case report describes the management of a fractured double-side-vented irrigating needle within the mesiobuccal canal orifice of maxillary first molar. The separated fragment was successfully retrieved with the help of indirect ultrasonics under magnification with a dental operating microscope. Conclusion: Development in techniques and armamentarium has led to successful retrieval of separated fragment from the root canal. The selection of a suitable method according to the position of the fractured instrument facilitates retrieval with minimal tissue removal. root of maxillary molar. This report describes a case in which ultrasonic technique was used to remove a fractured irrigating needle from the mesiobuccal canal of upper maxillary molar under magnification.","PeriodicalId":129095,"journal":{"name":"Conservative Dentistry and Endodontic Journal","volume":"204 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120898423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Evaluation of Efficacy of ProTaper® Universal Rotary Retreatment System for Gutta-percha Removal from Single Root Canals, Obturated with Two Different Techniques: In Vitro Cone-beam Computed Tomography Study","authors":"G. Sharma, K. P. Lashkari, A. Shukla, Chittenahalli N Vijay Kumar","doi":"10.5005/jp-journals-10048-0048","DOIUrl":"https://doi.org/10.5005/jp-journals-10048-0048","url":null,"abstract":"Ab s t r Ac t Aim: To compare and evaluate the efficacy of ProTaper® Universal retreatment system (URS) files in retrieval of gutta-percha (GP) from the canals obturated with two different obturation techniques, using cone-beam computed tomography (CBCT). Materials and methods: Fifty-two extracted maxillary central incisors fulfilling inclusion criteria were decoronated and prepared with ProTaper® rotary files till F3 file size. Specimens were randomly divided into two groups and were obturated with GP. The first group was obturated with cold lateral condensation technique and second group was obturated with thermoplasticized GP technique. The root fillings were retrieved from the canals using ProTaper® URS files. Preoperative and postoperative CBCT imaging was employed to assess the residual filling material in the canals. ITK-Snap software was used to calculate volume of filling material in the canals. Data were entered into Microsoft excel worksheet and analyzed using Statistical Package for Social Sciences, version 18.0 (SPSS Inc., Chicago, IL, USA). Descriptive statistics with percentage mean and standard deviation was computed. Independent sample t test was used to test the difference between study groups. Results: Residual root canal fillings were detected in all specimens. The mean volume percentage of remaining filling material was 10.69% ± 3.50 and 13.70% ± 3.63 in canals obturated with cold lateral condensation and thermoplasticized GP techniques, respectively. Conclusion: This study concluded that though ProTaper® URS failed to remove GP completely, it was more efficient in the group of root canals obturated with cold lateral condensation than the canals obturated with thermoplasticized GP technique.","PeriodicalId":129095,"journal":{"name":"Conservative Dentistry and Endodontic Journal","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132729741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Esthetic Management of Complicated Crown Fracture in Anterior Teeth: A Case Report","authors":"Radha Nair, M. Kuriakose, P. Geetha, Mahesh C Mohan, Drisya Soman","doi":"10.5005/jp-journals-10048-0051","DOIUrl":"https://doi.org/10.5005/jp-journals-10048-0051","url":null,"abstract":"Coronal fractures of the anterior teeth are a common form of dental trauma that mainly affects children and adolescents. Various treatment modalities have been practiced in the past, but reattachment of fractured fragment is considered to be the most conservative, natural, and esthetic approach. The restoration of natural teeth form, color, and alignment in these patients creates a positive social and emotional response in such patients. This paper reports on conservative management of the fracture of maxillary anterior teeth using two different approaches, namely, one with tooth fragment reattachment and other of recontouring with composite resin.","PeriodicalId":129095,"journal":{"name":"Conservative Dentistry and Endodontic Journal","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133116759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Tooth-whitening Procedures on Stained Nanohybrid Composites: Spectrophotometric Analysis","authors":"J. Mathew, Liza George, Sinju Paul, Sruthi M Sunildath, Dhanya John, Aleesha Joy","doi":"10.5005/jp-journals-10048-0052","DOIUrl":"https://doi.org/10.5005/jp-journals-10048-0052","url":null,"abstract":"Ab s t r Ac t Aim: To evaluate and compare the staining of a nanohybrid composite resin by coffee and turmeric powder and to determine the degree of lightening that could be achieved by using contemporary self-applied at-home products and in-office whitening techniques. Materials and methods: Thirty-six samples of standardized dimensions (10 mm diameter, 2 mm thick disks) were fabricated using GC solare sculpt A2 shade. The color of each specimen was measured (L, a, b values) at baseline with SpectroShade Micro. Samples were randomly allocated into three groups of coffee, turmeric solution, distilled water, and placed in 50 mL of each test solution. The color of each specimen was measured (L, a, b values) after 7 days to determine the color change. Each group was further divided into four subgroups according to the whitening treatment. Subgroup A—crest 3D white toothpaste (applied twice daily for 7 days), subgroup B—Polanight (45 minutes a day for 4 days), subgroup C—polaoffice (8 minutes each for three times), and subgroup D—Shofu polishing kit (applied once). After placing all specimens in distilled water for 24 hours, the color was measured again using a spectrophotometer. The effectiveness of whitening protocols was assessed by subtracting baseline color index values from those measured after whitening. Results: Group II (turmeric solution) showed greater color change (ΔE) after staining for 1 week. There was significant difference in color changes imparted following whitening treatments with crest 3D white toothpaste after staining with coffee and turmeric solution. Conclusion: Within the limitations of this in vitro study, it was observed that the whitening treatment with crest 3D white toothpaste is an effective method for reversing the color changes imparted by coffee and turmeric on the nanohybrid composite resin. Clinical significance: A composite resin stained by coffee and turmeric can be lightened to a clinically perceptible level by crest 3D white toothpaste.","PeriodicalId":129095,"journal":{"name":"Conservative Dentistry and Endodontic Journal","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125613663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Overview of Thermomechanically Heat-treated Nickel–Titanium Alloy Used in Endodontics","authors":"V. Krishnan, R. S. Nair, L. Ashok, M. C. Angelo","doi":"10.5005/jp-journals-10048-0047","DOIUrl":"https://doi.org/10.5005/jp-journals-10048-0047","url":null,"abstract":"The use of nickel–titanium (NiTi) alloys created a revolutionary impact in endodontic treatments. Shape memory and superelastic property of an NiTi alloy make the instrument more flexible, which improves the quality of the treatment by reducing the procedural errors. Even though these instruments show advanced metallurgical properties, it can lead to fracture due to fatigability. To improve the fracture resistance and enhance the clinical performance, various thermomechanical heat treatments had been introduced to these NiTi instruments. NiTi alloy undergoes phase transformation on heat treatment to upgrade the mechanical properties. This review article appraises the improved metallurgical properties of NiTi alloy by various thermomechanical heat treatment processes in addition with discussion of recently introduced thermomechanically altered NiTi endodontic instruments.","PeriodicalId":129095,"journal":{"name":"Conservative Dentistry and Endodontic Journal","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115608645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}