Open Dentistry Journal最新文献

{"title":"Effectiveness of S-PRG Filler-Containing Toothpaste in Inhibiting Demineralization of Human Tooth Surface.","authors":"Bennett T Amaechi, Hariyali Kasundra, Deepika Joshi, Azadeh Abdollahi, Parveez A A Azees, Linda O Okoye","doi":"10.2174/1874210601812010811","DOIUrl":"10.2174/1874210601812010811","url":null,"abstract":"<p><strong>Objectives: </strong>Using an established pH-cycling caries model, the authors evaluated the effectiveness of toothpastes containing Surface Pre-reacted Glass-ionomer filler (S-PRG) in preventing tooth surface demineralization.</p><p><strong>Materials and methods: </strong>210 tooth blocks were randomly assigned to seven experimental groups (30 blocks/group): no treatment (A), and toothpaste containing either NaF (B), 0 wt% S-PRG (C), 1 wt% S-PRG (D), 5 wt% S-PRG (E), 20 wt% S-PRG (F) or 30 wt% S-PRG (G). Groups were subjected to 14-day demineralization for development of early caries lesions using a pH-cycling caries model. Demineralization was assessed using Quantitative Light-induced Fluorescence (QLF) and Transverse Microradiography (TMR). All pairwise contrasts (between treatments) were tested using Analysis of Variance (ANOVA), and then Tukey's HSD for multiple comparisons. All <i>p</i>-values are considered significant if <0.05.</p><p><strong>Results: </strong>With QLF, there was a significant (ANOVA; <i>p</i><0.001) difference in mean percent fluorescence loss (∆F) observed among the groups. Relative to control, all S-PRG-containing toothpastes significantly (Tukey's; <i>p</i><0.0001) inhibited demineralization at varying percentages (48.6%, 61.3%, 67.4% and 69.8% reduction with S-PRG 1%, 5%, 20% and 30% respectively). Demineralization reduction was not significant with either NaF (15.6% reduction) or 0% S-PRG (-2.5% reduction <i>i.e.</i> 2.5% more demineralization than the Control) when compared to control group. Mineral loss assessed using TMR followed a similar trend as fluorescence loss.</p><p><strong>Conclusion: </strong>Toothpaste containing S-PRG filler can serve as an effective caries control tool. S-PRG filler-containing dentifrice to be more effective in preventing tooth demineralization than 1100 ppm fluoride provided as sodium fluoride.</p>","PeriodicalId":47284,"journal":{"name":"Open Dentistry Journal","volume":"12 ","pages":"811-819"},"PeriodicalIF":1.3,"publicationDate":"2018-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6210529/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36727573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the Effect of Glow Discharge Plasma Surface Treatment on Bonding Cements to Zirconia.","authors":"Abdulelah M Binmahfooz,&nbsp;Ghadeer I Basunbul,&nbsp;Aws S ArRejaie","doi":"10.2174/1874210601812010846","DOIUrl":"https://doi.org/10.2174/1874210601812010846","url":null,"abstract":"<p><strong>Background: </strong>The major difference in the chemical composition of Y-TZP ceramics, as compared with conventional porcelain, led researchers to develop alternative solutions for achieving durable and long term bonding with the zirconia surface.</p><p><strong>Objective: </strong>The study aims to evaluate the effects of glow discharge treatment on the bonding between cement and zirconia.</p><p><strong>Methods: </strong>The zirconia rings and rods were prepared with the Zirconia Y-TZP powder and TZ-3YSB-E (Tosoh-Zirconia) through auto-mix to investigate the glow discharge and thermo-cycling. An orientation Teflon mold was used to centralize each rod into the zirconia ring, and aided as a cementation jig during the cementation procedure.</p><p><strong>Results: </strong>Cohesive failure (2/3 or more of luting agent remained on the zirconia surface) has been majorly observed with RelyX Ultimate, while adhesion failure (less than 1/3 of the luting agent remained on the zirconia surface) has been primarily observed in Ketac-Cem. Mixed failure was observed among the three specimen including Rely X Unicem 2, Multilink Auto-mix and Ceramir.</p><p><strong>Conclusion: </strong>The glow discharge surface treatment procedure had a major impact on bond strength to zirconia.</p>","PeriodicalId":47284,"journal":{"name":"Open Dentistry Journal","volume":"12 ","pages":"846-855"},"PeriodicalIF":1.3,"publicationDate":"2018-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6210499/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36727577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Using Resonance Frequency Analysis to Compare Delayed and Immediate Progressive Loading for Implants Placed in the Posterior Maxilla: A Pilot Study.","authors":"Mohammed Jasim Al Juboori,&nbsp;Mohammed Ahmed Al Attas,&nbsp;Raquel Zita Gomes,&nbsp;Basma Fathi Alanbari","doi":"10.2174/1745017901814010801","DOIUrl":"https://doi.org/10.2174/1745017901814010801","url":null,"abstract":"<p><strong>Objective: </strong>Implants placed in the posterior region of the maxilla have a high incidence of implant failure due to poor bone quality, especially when immediate implant loading is needed. Immediate Progressive Loading (IPL) can enhance bone quality and may offer an alternative solution when Immediate Implant loading is needed.</p><p><strong>Methods: </strong>Six patients (one male and five females; 34-62 years old) were included in this study. Twelve implants were inserted in the posterior region of the maxilla. Resonance Frequency Analysis (RFA) was performed at the time of implant placement and after 1, 2, 3 and 6 months. ISQ (Implant Stability Quotient) values were compared between the Delayed Loading (DL) group after 2 months and the Progressive Loading (PL) group and between different time points for each group.</p><p><strong>Results: </strong>At implant placement, the mean ISQ values for PL and DL implants were 63 and 57, respectively. One month after implant placement, the mean ISQ value for PL implants was 73.Two months after implant placement, the mean ISQ value for PL implants was 75. Three months after implant placement, the mean ISQ values for PL and DL implants were 76 and 69, respectively. Six months after implant placement, the mean ISQ values for PL and DL implants were 79 and 76, respectively.</p><p><strong>Conclusion: </strong>Despite its limitations, this pilot study indicated that compared to DL, PL can enhance bone density and implant stability, resulting in greater early functionality and fewer surgery sessions.</p>","PeriodicalId":47284,"journal":{"name":"Open Dentistry Journal","volume":"12 ","pages":"801-810"},"PeriodicalIF":1.3,"publicationDate":"2018-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2174/1745017901814010801","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36742317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shade Stability of Polymer-Infiltrated and Resin Nano Ceramics.","authors":"Martin Gabriel Schürmann,&nbsp;Constanze Olms","doi":"10.2174/1745017901814010791","DOIUrl":"10.2174/1745017901814010791","url":null,"abstract":"<p><strong>Background: </strong>The esthetics plays an increasingly significant role in today's dentistry.</p><p><strong>Objective: </strong>The objective was to investigate the shade stability of a polymer-infiltrated and a resin nano ceramic in comparison to a conventional feldspar ceramic and an acrylate polymer.</p><p><strong>Methods: </strong>20 specimens of each of the materials, CAD-Temp (CT), Mark II (M), VITA Enamic (VE) and Lava Ultimate (LU), were prepared using the standard method. These were divided into groups (n=5) and placed in the following stain solutions: Distilled water, coffee, Coca-Cola and red wine for 14 days. The shade of each specimen was measured before and after using a spectrophotometer (n=5). The data were analyzed using ANOVA and Tukey's test (<i>p</i> ≤ 0.05).</p><p><strong>Results: </strong>The largest ΔE mean values were observed in CT by Coca-Cola (4.38 ± 0.41), in M by coffee (5.95 ± 0.62), in VE (6.02 ± 0.78) and LU (8.61 ± 0.30) by red wine. LU had the largest and strongest overall shade differences (total score: SSC=16.95) and CT the least (SSC=8.74). Overall shade differences of VE (SSC=12.03) and M (SSC=12.48) were statistically indistinguishable. After 14 days, only Coca-Cola caused clinically relevant shade differences in CT (ΔE > 2.7); this was also caused by coffee, Coca-Cola and red wine in M and coffee and red wine in VE and LU.</p><p><strong>Conclusion: </strong>On average, VE showed fewer shade differences than LU. After 14 days of immersion, shade differences which exceeded the clinical acceptance threshold of ΔE=2.7 were shown by CT in Coca-Cola, by M in coffee, Coca-Cola and red wine, and by VE and LU in coffee and red wine.</p>","PeriodicalId":47284,"journal":{"name":"Open Dentistry Journal","volume":"12 ","pages":"791-800"},"PeriodicalIF":1.3,"publicationDate":"2018-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2174/1745017901814010791","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36742316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of Mandibular Surface Area Changes in Bruxers <i>Versus</i> Controls on Panoramic Radiographic Images: A Case Control Study.","authors":"Lakshmi Padmaja Satheeswarakumar,&nbsp;Tatu Joy Elenjickal,&nbsp;Shashi Kiran Mohan Ram,&nbsp;Kartheesan Thangasamy","doi":"10.2174/1745017901814010753","DOIUrl":"https://doi.org/10.2174/1745017901814010753","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Background: &lt;/strong&gt;Bruxism is the commonest of the many parafunctional activities of the masticatory system. Opinions on the causes of bruxism were numerous and widely varying. It can occur during sleep as well as wakefulness. Bruxism was for long considered a major cause of tooth wear. Other effects of bruxism may include tooth movement and tooth mobility, as well as changes in oral soft tissues and jaw bone. Since the exact etiology and manifestations are unclear, it was difficult to diagnose Bruxism. In this study, we evaluated the area change as measured from digital panoramic radiographs that can occur in the lower jaw bone in those with Bruxism and compared the results with non-bruxers.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Aims and objective: &lt;/strong&gt;To determine the surface area changes of the mandible, condylar and coronoid processes in Bruxers from Panoramic radiographs and to compare and contrast the changes with age and gender matched controls.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Materials and methods: &lt;/strong&gt;The study was conducted in the department of Oral Medicine and Radiology. The total sample size was 40. The sample was divided into two groups, Bruxers and non-bruxers with 20 subjects in each group. Healthy volunteers aged between 20- 30 years diagnosed with Bruxism and Healthy volunteers aged between 20- 30 years diagnosed without Bruxism were included in group II (Non-Bruxers). Bruxchecker was made use of in confirming the Bruxism in Group I. The Panoramic radiograph was used as the imaging modality for the study. The measurements were made with the help of software, Image J. All the measurements were tabulated and statistical analysis was made using ANOVA (Post hoc) followed by Dunnett's test and unpaired t test.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;A comparison of the mandibular surface area as a whole and also condylar and coronoid processes individually were carried out. Significant results were obtained in case of condylar and coronoid processes between the two groups. The surface area of condylar process of Group I was found to be lower than that of Group II. The surface area of the right coronoid process of group I was found to be less when compared to that of group II but the values of the left coronoid process of group I was found to be more when compared with group II. The surface area of the mandible showed no significant difference between the groups. There was significant difference between the genders in case of mandible, condyle and coronoid. The surface area of mandible and condylar process was found to be lower in female when compared to male. The surface area of coronoid process was found to be more in case of females when compared to that of males in Group I.The results of our study show that while the overall surface area of bruxers remain unaffected when compared to controls, the condylar and coronoid process show significant change. The hitherto belief that the primary brunt of bruxism is borne by the masseter would require a revisit since","PeriodicalId":47284,"journal":{"name":"Open Dentistry Journal","volume":"12 ","pages":"753-761"},"PeriodicalIF":1.3,"publicationDate":"2018-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2174/1745017901814010753","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36614299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Horizontal Root Fractures. Diagnosis, Clinical Management and Three-Year Follow-Up.","authors":"Roberto Lo Giudice,&nbsp;Angelo Lizio,&nbsp;Gabriele Cervino,&nbsp;Nicita Fabiana,&nbsp;Puleio Francesco,&nbsp;Pietro Ausiello,&nbsp;Marco Cicciù","doi":"10.2174/1745017901814010687","DOIUrl":"https://doi.org/10.2174/1745017901814010687","url":null,"abstract":"<p><strong>Objective: </strong>The aim of this retrospective analysis is to describe and to evaluate the middle third horizontal root fractures, long term clinical management results and to estimate the effect of treatments factors upon healing and survival rate.</p><p><strong>Methods: </strong>Our clinical study included 42 patients presenting a middle third horizontal root fracture in permanent dentition. For each patient at t₀ the parameters recorded were: diastasis, mobility, sensibility, periodontal inflammation, pulpal pathology, associated fracture and dislocation of the coronal fragment. The follow-up was performed after 6 (t1), 12 (t2) and 36 (t3) months after the trauma, both clinically and radiologically. Clinical examination, vitality tests and a radiological evaluation (periapical x-ray) were performed.</p><p><strong>Results: </strong>At t₀ it was observed: diastasis (14, 3%), mobility (28, 6%), thermal sensibility (61, 9%), periodontal inflammation (4, 8%), pulpal pathology (38, 1%) and dislocation of the coronal fragment (47, 6%) of the patients. The treatment plan started with the coronal fragment repositioning and the blockage (splint) with the adjacent teeth in 47, 6% of cases.A root canal treatment was performed at t₀ in 52,4% of the fractured teeth. Statistical analysis showed the highest level of significance between pulpal lesions (t₀) and associated fractures. The mobility, sensibility and pulpar lesions parameters, showed a reduction in relation to the follow up timing, with a main variation remarkably evident between t₀ and t1. The ratio between observation time and the presence of diastasis was statistically significant.</p><p><strong>Conclusion: </strong>The analysis of the clinical results exhibits the high success rate of a conservative approach in the treatment of teeth fractured in the middle third of the root.</p>","PeriodicalId":47284,"journal":{"name":"Open Dentistry Journal","volume":"12 ","pages":"687-695"},"PeriodicalIF":1.3,"publicationDate":"2018-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2174/1745017901814010687","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36614335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"No Compliance Correction of Class II Malocclusion in Growing Patients Whit HERBST Appliance: A Case Report.","authors":"M Portelli,&nbsp;A Militi,&nbsp;M Cicciù,&nbsp;A Lo Giudice,&nbsp;G Cervino,&nbsp;R Fastuca,&nbsp;R Nucera","doi":"10.2174/1745017901814010605","DOIUrl":"https://doi.org/10.2174/1745017901814010605","url":null,"abstract":"<p><strong>Background: </strong>Class II malocclusion is the most common sagittal skeletal discrepancy, with a prevalent skeletal pattern of mandibular retrusion. The correction of mandibular retrusion with functional removable appliance needs a good patient's compliance; for this reason, some clinicians prefer to use no compliance apparatus.</p><p><strong>Objective: </strong>Objective of the present therapy note is to demonstrate that the use of no compliance apparatus can provide a good correction of skeletal class II malocclusion.</p><p><strong>Methods: </strong>In the present study, authors report a therapy note referred to a 10 years old patient, woman, affected by Class II, with mandibular retrusion and deep bite, treated in 2013 at the Dep. of Orthodontics of Messina University. An orthodontic treatment has been planned with the aim of stimulating mandibular growth; an Herbst appliance with a cantilever design, bonded on first maxillary and mandibular molars, has been used. After eleven months of functional therapy a bilateral molar class I have been obtained.</p><p><strong>Results: </strong>In the therapy note proposed, authors obtained a resolution of mandibular retrusion, a correction of overjet, overbite and dental crowding in both arches, and a bilateral molar and canine class I has been achieved.</p><p><strong>Conclusion: </strong>Herbst appliance seems to be efficient in the correction of II Class Malocclusion, independently from patient's cooperation; moreover , early correction of Class II malocclusion with functional appliances produces several clinical advantages.</p>","PeriodicalId":47284,"journal":{"name":"Open Dentistry Journal","volume":"12 ","pages":"605-613"},"PeriodicalIF":1.3,"publicationDate":"2018-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2174/1745017901814010605","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36626386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnostic Accuracy of Fine Needle Aspiration Cytology in Lesions of Oral Cavity and Salivary Glands: A Clinico-Pathological Study.","authors":"Shubhangi Shalley,&nbsp;Nasib Chand,&nbsp;Amit Aggarwal,&nbsp;Laxmi Narayan Garg,&nbsp;Varuni Yadav,&nbsp;Aashit Yadav","doi":"10.2174/1745017901814010782","DOIUrl":"https://doi.org/10.2174/1745017901814010782","url":null,"abstract":"<p><strong>Objective: </strong>Fine Needle Aspiration Cytology (FNAC) is a rapid, reliable and safe diagnostic tool used for various lesions of the oral cavity and salivary glands. The present study was undertaken to categorize the cytomorphology of the oral cavity and salivary gland lesions on FNAC and to assess the accuracy of FNAC in arriving at a diagnosis.</p><p><strong>Materials and methods: </strong>A prospective study on oral cavity swellings and salivary gland aspirates was done during a 2 year period from August 2015 to July 2017 in which a total of 70 FNAC's were performed. There were 12 aspirates obtained from oral cavity swellings and 58 aspirates were obtained from salivary glands. Histopathological evaluation of 65 lesions was done and was considered as gold standard. Only the lesions undergoing histopathological confirmation were included in the study. The sensitivity, specificity, diagnostic accuracy and clinical utility index were evaluated for accuracy of FNAC.</p><p><strong>Results: </strong>Hard palate (33.33%) was the predominantly aspirated site in the oral cavity. Parotid gland was the predominant gland aspirated (60.32%) among the involved salivary glands. Non-neoplastic lesions constituted 18.47% cases whereas neoplastic lesions were 81.53% (60.00% benign and 21.53% malignant). Pleomorphic adenoma (28.65%) was the most common benign lesion in the oral cavity involving hard palate and as salivary gland neoplasm (70.54%). Squamous cell carcinoma (60%) was the most common malignant lesion of oral cavity involving the tongue and buccal mucosa and adenoid cystic carcinoma (44.45%) was the commonest malignancy in salivary gland malignant neoplasms. The overall sensitivity, specificity and accuracy of FNAC in the present study were 89.5%, 100% and 85% respectively.</p><p><strong>Conclusion: </strong>FNAC is a safe, cost-effective and reliable technique effective in diagnosing the spectrum of different lesions in the oral and maxillofacial region.</p>","PeriodicalId":47284,"journal":{"name":"Open Dentistry Journal","volume":"12 ","pages":"782-790"},"PeriodicalIF":1.3,"publicationDate":"2018-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2174/1745017901814010782","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36614302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The IG- file use to Gauge the Apical Diameter in Endodontics: An <i>In Vitro</i> Study.","authors":"Massimo Amato,&nbsp;Alfredo Iandolo,&nbsp;Giuseppe Pantaleo,&nbsp;Dina Abtellatif,&nbsp;Michele Simeone,&nbsp;Angelo Lizio,&nbsp;Roberto Lo Giudice,&nbsp;Giuseppe Lo Giudice","doi":"10.2174/1745017901814010638","DOIUrl":"https://doi.org/10.2174/1745017901814010638","url":null,"abstract":"<p><strong>Aim: </strong>The aim of this study was to evaluate the efficacy of the IG-file, a new instrument designed for apical diameter gauging.</p><p><strong>Materials and methods: </strong>After shaping with F1 Universal Protaper, 60 roots were randomly divided into two groups and assigned to two operators, One Expert in Endodontics (EO) and One Unexpert (UO).In each sample, after canal curvatures have been detected, the apical diameters were measured with the IG-file and the K-NiTi. The results were compared with the reference value obtained by retrograde apical gauging. The data were statistically analyzed.</p><p><strong>Results: </strong>Among 60 samples, 10% of errors were recorded when the IG-files were used; in the K-NiTi group the incorrect measurements were 70%.In both groups (expert and unexpert) the IG-file measurements were more accurate than the K-NiTi (90 <i>vs</i> 33 and 90 <i>vs</i> 26,7). The differences were statistically significant.In curved canals, the difference between measurement rates performed with both instruments was statistically significant (85,7% IG-file <i>vs</i> 28,6% K-NiTi) as well as for the samples without curvatures (92,3% IG file <i>vs</i> 30,8% NiTi file).In root canals without curvatures overestimation errors in K-NiTi file group are more frequent than underestimation errors. This difference was statistically significant.</p><p><strong>Conclusion: </strong>A proper gauging of the apical diameter has a key role in endodontic therapy; an incorrect measurement can lead to clinical failures. This \"<i>in vitro</i>\" study highlights that IG-file improves measurement accuracy independently from clinician experience. Furthermore, in curved canals, the IG-file is more accurate than K-NiTi.</p>","PeriodicalId":47284,"journal":{"name":"Open Dentistry Journal","volume":"12 ","pages":"638-646"},"PeriodicalIF":1.3,"publicationDate":"2018-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2174/1745017901814010638","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36626390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oral Lichenoid Lesion Manifesting as Desquamative Gingivitis: Unlikely Association? Case Report.","authors":"Lívia Maria Lopes de Oliveira,&nbsp;Luiz Henrique Carvalho Batista,&nbsp;Alexandrino Pereira Dos Santos Neto,&nbsp;Luciano Barreto Silva,&nbsp;Renata Cimões,&nbsp;Jair Carneiro Leão,&nbsp;Maria Leticia Cintra,&nbsp;Camila Maria Béder Ribeiro","doi":"10.2174/1745017901814010679","DOIUrl":"https://doi.org/10.2174/1745017901814010679","url":null,"abstract":"<p><strong>Introduction: </strong>The aim of this report is to present a clinical case of oral lichenoid lesions associated with amalgam restorations with the presence of desquamative gingivitis for a nine months follow up period.</p><p><strong>Case report: </strong>The histopathologic characteristics and direct immunofluorescence were compatible with Oral Lichenoid Lesion (LLO). Diagnosis was based on a synthesis of all available information, including medical history, clinical examination, histopathology and the results of specific tests, such as the patch test, which confirmed allergy to thimerosal, an organic compound of mercury.</p><p><strong>Discussion: </strong>The replacement of amalgam restorations has brought improvements to the instrument, as evidenced by the disappearance of desquamative gingivitis, aspect erythematosus and erosive lesions. The fading does not complete the same, however, indicates the need to continue has been under continuous observation, the patient, having in view the possibility of the existence of an underlying lichen planus.</p>","PeriodicalId":47284,"journal":{"name":"Open Dentistry Journal","volume":"12 ","pages":"679-686"},"PeriodicalIF":1.3,"publicationDate":"2018-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6182885/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36614334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}