scholarly journals Dentinal Microcrack Formation after Root Canal Instrumentation by XP-Endo Shaper and ProTaper Universal: A Microcomputed Tomography Evaluation

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Sarah M. Alkahtany ◽  
Ebtissam M. Al-Madi
Keyword(s):  
The Body ◽  
Micro Ct ◽  
Cross Sectional ◽  
Significance Level ◽  
Root Canals ◽  
Type Iv ◽  
Significant Difference ◽  
Before And After ◽  
Microcrack Formation ◽  
Group 2

Aim. To evaluate dentinal microcrack formation on root canals instrumented, continuously in the body temperature, with XP-endo shaper (XPES) and ProTaper Universal (PTU), by means of microcomputed tomographic (micro-CT) analysis. Methodology. Nineteen mesial roots with two separate canals (Vertucci Type IV) of extracted mandibular molars were used in this study. The root canals (N = 38) were divided into 2 groups. Group 1 (n = 19): all MB canals were instrumented with XPES. Group 2 (n = 19): all ML canals were instrumented with PTU. All roots were scanned with micro-CT before and after instrumentation. Two precalibrated examiners evaluated the cross-sectional images of each sample with DataViewer program. The dentinal microcracks (complete and incomplete) were counted in each third of the root for the preinstrumentation and the postinstrumentation images. Wilcoxin signed-rank and Mann–Whitney U tests were used for statistical analysis at a significance level of P<0.05. Results. The number of microcracks increased significantly (P<0.05) after instrumentation with XPES in the middle and cervical thirds. The number of microcracks increased significantly (P<0.05) after instrumentation with PTU in the cervical third only. There was no significant difference between the groups in the cervical and apical thirds. In the middle third, the XPES induced more incomplete microcracks than PTU (P<0.05). Conclusion. Within the limitations of this study, there was no significant difference in the dentinal microcrack formation between XPES and PTU in the apical and cervical thirds of the root. However, XPES instrumentation induced more incomplete microcracks than PTU in the middle third of human roots.

scholarly journals Shaping Ability of XP Endo Shaper File in Curved Root Canal Models

2020 ◽  
Vol 2020 ◽  
pp. 1-6 ◽  
Author(s):  
Abdulmohsen Alfadley ◽  
Abdalrhman Alrajhi ◽  
Hamad Alissa ◽  
Faisal Alzeghaibi ◽  
Lubna Hamadah ◽  
...  
Keyword(s):  
Body Temperature ◽  
File Systems ◽  
Lower Number ◽  
Significance Level ◽  
Root Canals ◽  
Shaping Time ◽  
Significant Difference ◽  
Before And After ◽  
Canal Shaping ◽  
Shaping Ability

The aim of this study was to assess the shaping ability of the XP Shaper (XPS) file in severely curved canal models under simulated body temperature and compare it with that of the WaveOne Gold (WOG) file. Ninety-six simulated root canals were equally distributed into XPS and WOG systems to be shaped by eight files each. Files were assessed under a stereomicroscope prior to canal shaping to detect deformation if any. The canals were shaped at 35 ± 1°C using the X-Smart Plus motor. Images of the canals were obtained before and after instrumentation using a stereomicroscope to measure the amount of removed resin from both the inner and outer curvature sides at apex (0 mm) and 3 mm and 6 mm from the apex. The shaping time was calculated. The data were statistically analyzed by the independent t-test at 5% significance level. The XPS and WOG systems shaped the canals in 37.0 ± 9.5 and 62.6 ± 11.3 seconds (P<0.05), respectively. At the apex level, the amount of resin removal in both sides did not show a significant difference between the tested groups (P>0.05). At 3 mm and 6 mm levels, the WOG removed more resin than XPS at both sides (P<0.05). In XPS, deformation was observed in four files: one file after the first use, one file after the fourth use, and two files after the sixth use. In WOG, two files were deformed: one file after the fifth use and one file after the sixth use. One XPS file was fractured after the sixth use. In short, XPS and WOG files can be used in shaping severely curved canals as they showed the ability to maintain the original shape with minimal transportation. Both file systems showed signs of deformation after use with a lower number of deformed files observed in WOG throughout the experiment.

scholarly journals Microtomographic Evaluation of Canal Centralization and Dentine Removal after Canal Preparation with Two Rotary Systems: HyFlex EDM and ProTaper Next

2022 ◽  
Author(s):  
Vivian Ronquete ◽  
Alexandre Sigrist de Martin ◽  
Karin Zuim ◽  
Thais Machado de Carvalho Coutinho ◽  
Eduardo Fagury Videira Marceliano ◽  
...  
Keyword(s):  
Root Canal ◽  
Root Diameter ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Type Iv ◽  
Canal Diameter ◽  
Mandibular Molar ◽  
Apical Transportation ◽  
Significant Difference ◽  
Before And After

Abstract Objective This study compared the ProTaper Next (PTN; Dentsply Sirona, Tulsa, Oklahoma, United States) and HyFlex EDM (HEDM; Coltene/Whaledent AG, Alstätten, Switzerland) systems using micro–computed tomography (CT). Materials and Methods Twenty-one mesial roots classified as Vertucci's type IV from extracted mandibular first molars with curvatures between 20 and 40 degrees were selected. The teeth were scanned using a micro-CT before and after root canal preparation by both systems, applied to the same root, in alternating canals. The following parameters were analyzed: canal centering, apical transportation, root canal diameter/root diameter. Results No statistically significant differences between both systems were observed for any of the assessed morphological parameters (p > 0.05). All canals presented diameter enlargement of more than 40% in relation to root diameter in the cervical and middle segments. No statistically significant difference was noted between the HEDM and PTN groups. The wear percentage for the HEDM group in the cervical and middle thirds were 49.66 ± 8.65 and 46.48 ± 14.29, respectively, and 51.02 ± 11.81 and 45.48 ± 10.79 for the PTN group, respectively. Conclusion Both systems displayed similar mandibular molar mesial canals preparation, with no differences noted for any of the assessed parameters. Both groups showed increased canal diameter in the cervical and middle thirds by more than 40%.

scholarly journals A novel plant based intra canal medicament: ease of removal and effect on radicular dentine microhardness

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Yousra Aly ◽  
Nada Omar ◽  
Engy M. Kataia ◽  
Maram E. Khallaf ◽  
Mohamed H. Zaazou
Keyword(s):  
Moringa Oleifera ◽  
Acrylic Resin ◽  
Mean Value ◽  
Root Canals ◽  
Dentin Surface ◽  
Significant Difference ◽  
Before And After ◽  
Leaf Powder ◽  
Group 2 ◽  
Root Canal Dentin

Abstract Background This study aimed to evaluate the remaining amount of intra canal medicament in the root canals and their effect on microhardness of radicular dentine. In this study, ninety straight single-rooted teeth were used. Teeth were decoronated at the cemento-enamel junction to ensure a uniform root length of 14 mm (± 1 mm). Root canals were prepared using ProTaper rotary files till size F5. The teeth were then randomly assigned to 3 treatment groups (n = 30); Group 1: Ca(OH)2 pastes (Metapex), Group 2: Moringa oleifera leaf powder mixed with Moringa oleifera extract liquid and Group 3: Moringa oleifera root powder mixed with Moringa oleifera extract liquid. The access openings of all teeth were sealed with Cavit and all teeth were kept in the incubator at 37 °C and 100% humidity for 1 week. After 1 week, the intra canal medicament paste was removed from all teeth. For examination of the ease of removal of the intracanal medicaments, root canals were sectioned longitudinally into buccal and lingual halves and were examined under stereomicroscope at 25× magnification. The remaining amount of intracanal medicaments was calculated using image analysis software (Image j). For microhardness evaluation, forty-five specimens were longitudinally sectioned in a bucco-lingual direction then the roots were split. The root segments were then horizontally embedded in autopolymerizing acrylic resin leaving their dentin surface exposed. The dentin surface of the mounted specimens was ground flat and smooth and polished to obtain a smooth surface. Microhardness measurement was recorded for each sample at baseline before and after application of the three intracanal medications using Vickers Microhardness Tester at magnification of 100× using a 25 g load for 10 s. Results Regarding the evaluation of the ease of removal of the intracanal medicaments after irrigation: apically, the Ca(OH)2 recorded the highest mean value of the residual remnants with a statistically significant difference with both Moringa oleifera leaf and root. The microhardness evaluation results showed that all groups showed increase in the microhardness after application of the intracanal medicament for 1 week with no statistically significant difference between them. Conclusions Moringa oleifera could be removed easily from the root canals and showed increase in the microhardness of root canal dentin similar to the commonly used calcium hydroxide.

scholarly journals Surface Characteristics of Reciprocating Instruments Before and After Use - A SEM Analysis

2015 ◽  
Vol 26 (2) ◽  
pp. 121-127 ◽  
Author(s):  
Aida Rene Assayag Hanan ◽  
Daniely Amorin de Meireles ◽  
Emílio Carlos Sponchiado Júnior ◽  
Simone Hanan ◽  
Milton Carlos Kuga ◽  
...  
Keyword(s):  
Microscopic Analysis ◽  
Surface Characteristics ◽  
Sem Analysis ◽  
Significance Level ◽  
Root Canals ◽  
Mechanical Preparation ◽  
Significant Difference ◽  
Before And After ◽  
Reciprocating Instruments ◽  
Descriptive Statistical Analysis

The presence of debris, defects and deformations of endodontic reciprocating instruments before and after chemical-mechanical preparation (MCP) was analyzed using scanning electron microscopy (SEM). The following 26 instruments were divided into 2 groups: Waveone (n=13) and Reciproc (n=13) and examined by SEM (150 x magnification) prior to canal preparation at 2 and 4 mm from the tip. The instruments were used in the preparation of mesial root canals of 26 extracted human permanent mandibular molars. The instruments were then washed in ultrasonic bath and subjected to new microscopic analysis of debris and deformation by a score that used the presence or absence of irregular edges, grooves, microcavities and burrs as criteria. After the SEM analysis and with the scores of the examiners, the collected data were subjected to descriptive statistical analysis using the Kruskall-Walis and Mann Whitney test at a 5% significance level. All instruments examined presented debris before and after use. A statistically significant difference was found for defects and deformation between the groups (p<0.05). The presence of defects and deformities was higher in the WaveOne instruments, and Reciproc instruments presented a lower rate.

scholarly journals Apical extrusion of debris by manual and mechanical instrumentation

2007 ◽  
Vol 18 (1) ◽  
pp. 16-19 ◽  
Author(s):  
Lilia E. Leonardi ◽  
Diana M. Atlas ◽  
Guillermo Raiden
Keyword(s):  
Root Canal ◽  
Significance Level ◽  
Root Canals ◽  
Group 4 ◽  
Apical Extrusion ◽  
Working Length ◽  
Significant Difference ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

The aim of the present study was to assess the presence of apically extruded debris and evaluate the influence of canal curvature on the amount of debris produced by manual and mechanical techniques. Forty single-rooted mature teeth with 15 to 30 degree of root canal curvature were selected. The presence of only one foramen was confirmed using a magnifying lens. A size 15 K-file was placed up to the apical foramen to determine the patency. Working length was determined with the same instrument, 1 mm short of the foramen. According to the employed technique, the groups were labeled as follows: Group 1 - Manual instrumentation with Mor-flex files; Group 2 - Mechanical instrumentation with Cursor and Mor-flex files; Group 3 - Manual instrumentation with Flexi-cut files; Group 4 - Mechanical instrumentation with Cursor and Flexi-cut files. During instrumentation, the root canals were irrigated with 20 mL. Debris extruded through the apical foramen was collected using the Myers and Montgomery technique. The values (in mg) were: Group 1: 0.422 ± 0.683; Group 2: 0.688 ± 0.795; Group 3: 0.409 ± 0.323; Group 4: 0.810 ± 0.708. Data were analyzed statistically by ANOVA at 5% significance level. There was no statistically significant difference among the groups (p<0.05). No statistically significant differences were found between slight and moderate curvatures in terms of the amount of extruded debris (p>0.05).

scholarly journals Effects of Gates-Glidden, LA Axxess and orifice shaper burs on the cervical dentin thickness and root canal area of mandibular molars

2011 ◽  
Vol 22 (1) ◽  
pp. 28-31 ◽  
Author(s):  
Marco Antonio Hungaro Duarte ◽  
Ricardo Affonso Bernardes ◽  
Ronald Ordinola-Zapata ◽  
Bruno Carvalho de Vasconcelos ◽  
Clovis Monteiro Bramante ◽  
...  
Keyword(s):  
Root Canal ◽  
Significance Level ◽  
Root Canals ◽  
Canal Area ◽  
Mandibular Molars ◽  
Significant Difference ◽  
Before And After ◽  
Dentin Thickness

This study evaluated the increase of the instrumented area and dentin thickness in the mesial and distal aspects of mesial canals of mandibular molars after the use of Gates Glidden (GG), LA Axxess (LA) and Orifice Shaper (OS) instruments. A total of 53 canals from 27 mandibular molars were embedded in resin and divided into 3 groups. The roots were sectioned 3 mm below the cementoenamel junction and the images were captured before and after instrumentation. The increase of the instrumented area in terms of percentages and the remaining dentin thickness, in mm, at the mesial and furcal aspects were calculated using the Image tools software. Data were analyzed using the Kruskal-Wallis and Dunn's test. The significance level was set at 5%. All instruments promoted cervical flaring with different amounts of dentin removal at the mesial and distal aspects of the root canals. Statistically significant difference (p<0.05) was found between LA and all other instruments after using the first instrument. Regarding dentin thickness, no significant difference (p>0.05) was found between the mesial and distal walls in all groups. It may be concluded that LA 35.06 and GG 3 burs produced the thinnest dentin walls, and thus their use in mesial canals of mandibular molars should be done with caution.

scholarly journals Pengaruh lamanya paparan energi panas terhadap suhu tubuh dengan metode mandi uap pada wanita dewasa

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Lesley Z. Wangean ◽  
Fransiska Lintong ◽  
Jimmy F. Rumampuk
Keyword(s):  
Random Sampling ◽  
Steam Bath ◽  
Simple Random Sampling ◽  
Heat Energy ◽  
The Body ◽  
Adult Women ◽  
Cross Sectional ◽  
Significant Difference ◽  
Before And After ◽  
Cross Sectional Design

Abstract: In the medical field, heat energy has been often used in the treatment of various types of diseases. The steam bath is one example of the methods of treatment with heat energy by conduction. If there is a temperature difference between two objects, the heat is transferred by conduction from the hotter object to the colder object. This study aimed to obtain the effect of steam on changes of body temperature during a 20-minute steam bath. This was an analytical study with a cross sectional design. Samples were obtained by using random sampling. There were 40 adult women aged 20-25 years who met the inclusion criteria: having a normal BMI, and without hypertension, asthma, or heart disease. The study was conducted at Tikala Shiatsu Sario Manado. Data were analyzed by using SPSS and Paired T Test. The results showed a very significant difference in temperatures before and after the steam bath in the 10th minute (p < 0.001), 15th minute (p < 0.001), and the 20th minute (p < 0.001). Conclusion: There was a very significant difference between the body temperatures before and after the steam bath.Keywords: temperature , steam bathAbstrak. Dalam bidang kedokteran, energi panas sudah sering dimanfaatkan dalam penyembuhan berbagai macam jenis penyakit. Mandi uap termasuk dalam salah satu contoh pengobatan energi panas dengan metoda konduksi. Bila terdapat perbedaan temperatur antara kedua benda maka panas akan ditransfer secara konduksi yaitu dari benda yang lebih panas ke benda yang lebih dingin. Penelitian ini bertujuan untuk mengetahui pengaruh mandi uap terhadap perubahan suhu tubuh selama mandi uap selama 20 menit. Jenis penelitian ini yaitu analitik dengan desain potong lintang. Pengambilan sampel secara simple random sampling berjumlah 40 orang wanita dewasa usia 20-25 tahun yang memenuhi kriteria inklusi yaitu tidak terdapat penyakit Hipertensi, Asma dan Penyakit Jantung, serta memiliki IMT normal. Lokasi penelitian bertempat di Tikala Shiatsu Sario Manado. Data dianalisis dengan SPSS dan Uji T Berpasangan. Hasil penelitian mendapatkan adanya perbedaan yang sangat bermakna antara suhu sebelum dan sesudah mandi uap pada menit ke-10 (p < 0,001), menit ke-15 (p < 0,001), dan menit ke-20 (p < 0,001). Simpulan: Terdapat perbedaan yang sangat bermakna antara hasil pengukuran suhu tubuh sebelum mandi uap dan sesudah mandi uap.Kata kunci: suhu tubuh, mandi uap

scholarly journals Konseling Gizi, Kualitas Diit Berbasis Pangan Lokal Dengan Kadar Glukosa Darah Penderita Diabetes Mellitus Tipe Ii Di Wilayah Kerja Puskesmas Bahu

Jurnal GIZIDO ◽  
2018 ◽  
Vol 10 (2) ◽  
pp. 108-112
Author(s):  
Rivolta G,M, Walalangi ◽  
Muksin Pasambuna ◽  
Rudolf B. Purba ◽  
Agung Suryohadi
Keyword(s):  
Diabetes Mellitus ◽  
Blood Glucose ◽  
Local Food ◽  
T Test ◽  
The Body ◽  
Significance Level ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Significant Difference ◽  
Before And After

Diabetes Mellitus is a group of chronic disease which is characterized by increased levels of glucose in the blood due to disorders of the body's metabolism system, in which the pancreas organ incapable of producing the hormone insulin according to needs of the body. Nutritional counselling with quality local food based diit can help control blood glucose levels. This research aims to identify the difference in blood glucose levels and the value of quality diit type II diabetes mellitus patients before and after given nutritional counseling with quality local food based diit. This type of research is Pre Experimental research using one group pretest-posttest design. The number of samples is determined by purposive sampling counted 31 people. Data analysis using Wilcoxon and T-test analysis. The Wilcoxon analysis with significance level of 95% can be seen to produce significant difference in pre-post glycemic index component with p=0,000 (p<0,05) and diversity of pre-post food with p=0,002 (p<0,05). In the result of T-test for pre-post blood glucose variable, there was no significant difference p=0,105 (p>0,05). However, there was a range of decreased glucose levels before and after in 22 respondents with an average decrease of 11.42 mg/dL. Conclusion there was no difference of blood glucose level before and after nutrition counseling with quality of diet based on local food.

Comparison of the Antimicrobial Efficacy of the EndoVac System and Conventional Needle Irrigation in Primary Molar Root Canals

2017 ◽  
Vol 41 (4) ◽  
pp. 284-288 ◽  
Author(s):  
Burak Buldur ◽  
Arife Kapdan
Keyword(s):  
Ethylenediaminetetraacetic Acid ◽  
Antimicrobial Efficacy ◽  
Primary Molar ◽  
Significance Level ◽  
Second Molar ◽  
Root Canals ◽  
Colony Forming Units ◽  
Before And After ◽  
Group 2 ◽  
And Control

Purpose: The purpose of this study was to compare the antimicrobial efficacy of the EndoVac system and conventional needle irrigation to eliminate E faecalis in primary molar root canals. Study Design: 60 extracted human primary second molar roots were instrumented up to an apical size .04/35 and randomly divided into two groups; Group 1: conventional needle (n=30) and Group 2: EndoVac (n=30), and four subgroups (two experimental subgroups; (a) 2.5% sodium hypochlorite (NaOCl) + ethylenediaminetetraacetic acid (EDTA) (n=20), (b) ozonated water (OW) + EDTA (n=20), and control groups (c) 5.25% NaOCl (n=10) and (d) saline (n=10). All roots were sterilized and then inoculated with E.faecalis. Before and after final irrigation procedures, root canals were sampled and the grown colony forming units (CFUs) were counted. Data were analyzed by Kruskall-Wallis and Mann-Whitney U tests using a 0.05 significance level. Results: The EndoVac reduced more bacteria than the conventional needle did but it was not statistically significant (p&gt;0.05). NaOCl alone or followed by EDTA totally eliminated bacteria. OW + EDTA showed higher reduction of bacteria but could not totally eliminate bacterias. Conclusions: In the context of bacterial elimination, the EndoVac was not significantly better than the conventional needle. Although, there were fewer CFU/mg when using EndoVac, there was not any statistically significant superiority to conventional needle irrigation. An OW+EDTA regimen showed antibacterial effect in the primary molar root canals but it was significantly less effective than NaOCl+EDTA.

scholarly journals Renal bone disease in patients on hemodialysis: an observational study focusing on the variation of calcium metabolism

2019 ◽  
Vol 7 (7) ◽  
pp. 2660
Author(s):  
Wajeeha Elahi ◽  
Ameen Zubair Syed ◽  
Bilal Jamil ◽  
Shahid Kamran ◽  
Raheela Adil ◽  
...  
Keyword(s):  
Demographic Data ◽  
The Body ◽  
Cross Sectional ◽  
Related Data ◽  
Significant Difference ◽  
Renal Bone Disease ◽  
Group 3 ◽  
Group 2 ◽  
Pth Level ◽  
Group 1

Background: The aim of this study was to determine the disturbances in the levels of mineral in the body due to hemodialysis at different levels of parathormone levels and to assess its association with the calcium levels.Methods: Study was a cross sectional for the period of 6 months taking ethical approval. Total 255 cases were registered in this study after taking their informed consent. The cases were divided into three groups according to PTH level. Group 1 has 87 subjects with PTH level <250, group 2 has 102 subjects with PTH level 250-650 and group 3 has 66 cases with PTH level >650. The cases were taking hemodialysis for greater than 6 months and have the ages more than 18 years were included in this study. The demographic data includes age, sex dialysis related data like duration of hemodialysis, levels of calcium, phosphorus, albumin, PTH, ALP were observed.Results: Hemodialysis duration were recorded in respective three groups as 7.28±5.71, 6.26±5.56 and 6.15±4.30 days respectively  (P=0.319). Calcium was found in group 1, 8.70±0.81, in group 2, 8.39±0.89 and in group 3, 8.76±0.82 (P=0.01). PTH level in three respective group were recorded to be 123.46±74.15, 418.47±115.49 and 1314.67±1188.63 (P <0.001).Conclusions: Present study showed that significant difference was found in mineral levels in patients on hemodialysis with PTH level as well as with alkaline phosphatase level. Nevertheless, no significant difference was found with duration of dialysis and with parameter of albumin.

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