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Article
Evaluation of Canal Transportation Using Single File Rotary Systems, One Shape, Waveone GOLD and Reciproc in Simulated Curved Canals (in Vitro Study)

Author: Eanas Ittihad Jellil ايناس اتحاد جليل
Journal: Tikrit Journal for Dental Sciences مجلة تكريت لعلوم طب الاسنان ISSN: 20731213 Year: 2017 Volume: 5 Issue: 1 Pages: 121-125
Publisher: Tikrit University جامعة تكريت

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Abstract

Objectives maintaining root canal anatomy through minimal canal transportation by usingRotary single file systems: One Shape, Wave One Gold and Reciproc systems used insimulated artificial curved root canals. Materials and Methods 30 simulated curved rootcanals in clear resin blocks were used in this study and divided into three groups containing10 samples each: group (1) represented canals instrumented with Rotary One Shape files,group (2) canals instrumented with reciprocating Wave One Gold files while Group (3)canals were prepared with Reciproc files. All canals were imaged pre- and postinstrumentationat three levels, 2,3 and 5 mm apically and compared using Adobe Photoshopsoftware program. Amount of transportation were assessed. The three groups were comparedwith ANOVA and LSD statistic tests Results the mean transportation at 3mm level of thecanal had no significant difference among all groups, all shown transportation. At 2mm, and5mm levels there were significant difference between groups, G2 shown the leasttransportation among all groups. Conclusions Within the limits of this study, the canalpreparation with Wave One Gold files showed lesser transportation than One Shape andReciproc files.

Keywords

Root canal --- Rotary --- curve


Article
A comparative study to evaluate the sealing ability of a prisma dycal placed in cervical root perforation versus other materials (in vitro study)

Authors: Ahmed H. Ali احمد علي --- Raghad A. Mohammed رغد محمد --- Shatha Abdul- Kareem شذى عبد الكريم
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2005 Volume: 17 Issue: 3 Pages: 1-3
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Calcium Hydroxide preparations are used extensively in dentistry, and one of these aspects is treatment of root perforations. The purpose of this in vitro study was to compare the sealing ability of a prisma (visible light cure dycal), amalgam with varnish and chemical cure dycal are used to repair lateral root perforations.Materials and Methods: Thirty extracted human maxillary anterior teeth were used; each tooth was sectioned longitudinally into facial and palatal halves .The perforations were made into each half tooth at the cervical third of the root. The samples were divided into three groups; group I was repaired with prisma, group II repaired with chemically cured dycal and group III with varnish and amalgam .The teeth halves were placed in methylene blue dye for one week period then linear dye penetration was measured from where the repair materials were made.Results: The results showed that a prisma (visible light cure dycal) demonstrated less dye penetration than other groups, the difference was statistically significant (p<0.01) from other groups, non significant differences (p>0.05) were present between amalgam with varnish and the chemically cured dycal.Conclusion: Calcium Hydroxide including the visible light cured and the chemically cured, and the amalgam with varnish, each possess a therapeutic potential for treating known and undetected root perforations. Percentage of leakage was more in amalgam with varnish group than prisma and Kerr Dycal


Article
The solubility of a zinc oxide eugenol root canal sealer (Endofil) in normal saline solution at different time intervals

Authors: Suhad J. Hemed سهاد حمد --- Waleed M. Khalil وليد خليل --- Saif Al Arab A. Mohammed سيف العرب محمد
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2005 Volume: 17 Issue: 3 Pages: 4-7
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The solubility of the root canal sealers is undesirable, because the process of dissolution may result in gaps and voids along the sealer-dentine or sealer-gutta percha interface. The aim of this study was to assess the solubility of zinc oxide based sealer (Endofil) in normal saline solution at different time intervals.Materials and methods: Fifty standardized plastic ring moulds were constructed and filled with Endofil sealer. The specimens were allowed to dry for 24h then weighed to the nearest 0.0001g .The samples were divided randomly into 5 groups and immersed in normal saline solution for 1,7,14,28 and 56 days. The samples were removed from the solution after completing the specified immersion period and allowed to dry for 24h. Then they were weighed, the percentage weight loss was then determined.Results: The percentage weight loss was less that 3% for immersion periods not exceeding 14 days and increased up to 5.4% for the 56 days. The statistical analysis of the results revealed a non significant difference between 1 and 7 days immersion time groups, while the differences between other groups were statistically significant.Conclusion: Under the conditions of the present study, the Endofil sealer met the International Standard ISO requirement for at least 14 days. The solubility rate of the sealer increased gradually from the first day till the 56 th days, but it remained within the acceptable limits for only 14 days.


Article
New Approach in Estimation of Dental Development

Author: Hayder A. Kadhim
Journal: Medical Journal of Babylon مجلة بابل الطبية ISSN: 1812156X 23126760 Year: 2015 Volume: 12 Issue: 1 Pages: 317-322
Publisher: Babylon University جامعة بابل

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Abstract

This study aimed to estimate the mature root length of first premolar by using the root of first molar as a reference through the panoramic radiograph.The sample of this study included 102 panoramic radiographs of Iraqi Arab subjects with an age ranged between 17-25 years. The root length of both the first premolars and first molars are measured on good diagnostic quality panoramic radiographs by using the Planmeca Romexis Viewer software. Pearson’s correlation coefficientwas used to determine the relation between the root length of first premolar and that of permanent first molar. Regression equation was used to determine the questions that predict the length of mature root of first premolars. Paired t-test was used to compare between the actual and predicted root length.The findings showed high correlation between the root length of first premolars and that of permanent first molars. Hence, the root length of permanent first molar can be used as predictors for root length of first premolars.


Article
The bactericidal efficiency of Chlorhexidine as an endodontic irrigant

Authors: Abdul–Haq A Suleiman --- Ghada Y Abdul–Rahman --- Wiam M. Al–Ashou
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2006 Volume: 6 Issue: SpIss Pages: S71-S78
Publisher: Mosul University جامعة الموصل

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Abstract

to determine the bactericidal efficiency of 0.75% Chlorhexidine in vitro . The time required for this irrigant to start its antimicrobial effect on the selected microorganisms isolated from the infected root canals and unidentified samples taken from root canals with necrotic pulps were evaluated. Materials and Methods: The substantive antimicrobial effect of 0.75% Chlorhexidine in vitro is also considered. Samples taken from 13 teeth with necrotic pulp from patients attended the Department of Conservative Dentistry, College of Dentistry at Mosul University. The turbidity method was applied to determine the antimicrobial effect of 0.75% Chlorhexidine and the combination of 0.5% Chlorhexidine and 0.5% sodium hypochlorite comparing with the antimicrobial effect of 2.5% sodium hypochlorite, the time required for these materials to start their antimicrobial effect on the selected microorganisms was determined using contact test. The antimicrobial effectiveness were evaluated at different time intervals, immediately, 5, 10, 15 minutes after the contact of the microorganisms with the irrigating solutions. Results: Both 0.75% Chlorhexidine and 2.5% sodium hypochlorite are effective on microorganisms collected from root canal. There is no significant difference between Chlorhexidine and sodium hypochlorite in their antimicrobial effect on the anaerobic microorganisms, but Chlorhexidine is more effective on the aerobic microorganisms. Conclusion: Chlorhexidine 0.75% and 2.5% sodium hypochlorite has an immediate effect on the selected microorganisms and unidentified samples from the teeth with necrotic pulps. The combination of Chlorhexidine 0.5% and 0.5% sodium hypochlorite has an effect started after 5 minutes


Article
Root Caries Prevention Potential of Chopped CO2 Laser: an In Vitro Study

Author: Dr. Muthenna Sh. Rajab.* د.مثنى رجب
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2008 Volume: 5 Issue: 1 Pages: 1-6
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The objective of this study aimed to assess the caries-preventive potential of various chopped CO2 laser parameters, and to explore the effect of the laser energy density on the caries inhibition activity.Roots of extracted human premolar teeth were irradiated with three various energy densities (25.47, 50.93, and 101.86) J/cm2, by changing the number of pulses, the pulse duration, and the spot diameter. The CO2 laser system emitted laser with 10.6m in wavelength. All roots were subjected to carieslike lesion formation by 3.5 pH lactic acid for 21 days. The roots after that were sectioned into ground cross sections and the lesion depths were measured under a polarizing microscope.Chopped CO2 laser preventive treatments inhibited carieslike lesion progression up to 36%. This effect was improved with decreased total energy density within the limits of the examined laser parameters.

Keywords

Keywords: Root --- Caries --- Chopped --- CO2 --- Laser


Article
Evaluation of the Antimicrobial Effect of Ethanolic Extracts of Sage and Rue as a Root Canal Irrigants (An In Vivo Study).

Author: Maha M Al –Bazzaz
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2011 Volume: 11 Issue: 18 Pages: 310-316
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: To evaluate the antimicrobial effect of the ethanolic extracts of Ruta graveolens (Rue) and Sal-via officinalis (Sage) in a concentration of 0.2% and compare the results with the same concentration of chlorhexidine 0.2% (CHX) and normal saline on root canal bacteria using the above plant extracts as an irrigating solutions clinically. Materials and Methods: Thirty five uniradicular teeth with necrotic pulps were chosen. The patients were divided randomly into four groups, 10 patients for groups I, II and III and 5 patients for group IV. Using 0.2% ethanolic extract of Sage, 0.2% ethanolic extract of Rue, 0.2% chlorhexidine gluconate (CHX) and normal saline, respectively. Samples were obtained from the canal at the beginning of the first and second appointments, at the end of the second appoint-ment and at the beginning of the third appointment using wet sterile paper points. Results: The results revealed that 0.2% of the ethanolic extract of both Sage and Rue have a significant antimicrobial effect when used clinically as an endodontic irrigant, and was significantly not different from 0.2% chlorhex-idine gluconate (CHX) and significantly different from normal saline. Conclusions: Rue and Sage demonstrated antimicrobial effects on the root canal bacteria (both aerobic and anaerobic) used as en-dodontic irrigants compared with CHX.


Article
The antimicrobial effect of water extraction of Salvadora persica (Miswak) as a root canal irrigant

Authors: Talal H Al–Salman --- Moataz Gh Al–Shaekh Ali --- Osama M Al–Nu’aimy
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2005 Volume: 5 Issue: 5 Pages: 33-36
Publisher: Mosul University جامعة الموصل

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Abstract

The aim of this study was to evaluate the antimicrobialeffect of 10% water extraction of Salvadora persica (Miswak)when used clinically as an endodontic irrigant.Twenty four uniradicular teeth with necrotic pulps werechosen. The patients were divided randomly into 2 groups:Experimental group, in which water extract of Salvadorapersica (10%) was used as a root canal irrigant; and controlgroup, in which distilled water was used as a root canal irrigant.Bacteriological samples were obtained from the canal atthe step of working length determination (before the canalwas subjected to instrumentation and irrigation procedures),and at the end of the biomechanical instrumentation proceduresby using a sterile K–file. The file was separated from thehandle using a sterile wire cutter, and the severed portion wasplaced in a sterile screw–capped vial containing 5 ml of thioglycollatebroth as a transport media. A 0.1 ml of thioglycollatebroth was inoculated on each of two brain–heart infusionagar plates: One plate was incubated under aerobic conditions,and the other was incubated under anaerobic conditionsusing anaerobic jar and gas pack anaerobic system. Both plateswere incubated at 37 ºC for 24 hours; then, the number ofbacterial colonies was counted.The results revealed that 10% water extraction of Salvadorapersica is an effective antimicrobial agent when utilizedclinically as an irrigant in the endodontic treatment of teethwith necrotic pulps.


Article
An in- vitro evaluation the effect of endodontic irrigation solutions on the microhardness of root canal dentin. Prof.

Authors: Dr. Itab Nasser Hussein د. عتاب ناصر --- Dr. Abdul Karim AL-azzawi د. عبد الكريم العزاوي
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2011 Volume: 8 Issue: 1 Pages: 19-23
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The aim of this study was to evaluate the effect of 5.25 sodium hypochlorite and17%EDTA on the microhardness of root canal dentin .Fifteen, maxillary incisor teeth extracted for periodontal reasons were used. Thecrowns of the teeth were removed at the CEJ. The roots were separated longitudinallyinto two segments, embedded in acrylic resin, and polished. A total of 30specimenswere divided into 3 groups of 10 teeth at random according to the irrigation solutionused: group 1: 5.25% NaOCl for 1min; group 2: 17% EDTA for 1 min; and group 3:distilled water (control). Each group was submitted to Vickers microhardnessindentation tests. The data were recorded as Vickers numbers and the results wereanalyzed statistically by using one-way ANOVA.The results showed that, irrigation with either sodium hypochlorite or EDTAdecreased the microhardness value of root dentin. Irrigation with EDTA gave morereduction of dentin compared to sodium hypochlorite. The reduction of VHN ofdentin following the irrigation treatment was statistically significant (p< 0.05 ) .Both sodium hypochlorite and EDTA irrigation solution significantly reduced themicrohardness of root dentin.


Article
The effect of Hand Stainless-Steel and NiTi Rotary file on vertical root fracture.

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Abstract

The aim of this study was to compare the fracture resistance of roots followingroot canal therapy using stainless-steel hand instrumentation (SS), Rotary Profile (PF)instrumentation, Rotary ProTaper instrumentation (PT). Forty-five mandibularpremolars teeth were divided into three groups of 15 teeth each, according to the typeof instrumentation. All root obturated with gutta-percha and AH26 sealer. The rootswere vertically loaded using a universal testing machine. Fracture loads were analysedby ANOVA and LSD test, and fracture patterns were analyzed with Chi-Square.Profile & ProTaper groups have significantly lower fracture load than handinstruments group (P < 0.05). Chi-Square showed a significant differences betweengroups (P < 0.05) .

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