One-year outcomes of MTA and modified Portland cement pulpotomy in primary teeth: a randomized clinical trial
Fatemeh
Mazhari
4Postgraduate Student of Pediatric Dentistry, Dental Materials Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
author
Katayoun
Safari
Dentist, Private Practice, Mashhad, Iran
author
Fatemeh
Mahmoudabadi
Assistant Professor of Pediatric Dentistry, Dental Materials Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
author
text
article
2017
eng
Purpose: To compare the efficacy of Mineral Trioxide Aggregate (MTA) and Modified Portland Cement (MPC) as pulpotomy medicaments in primary molars. Methods: A sample of 54 children 4 to 6 years old of age, who had at least one primary mandibular second molar that needed pulpotomy were randomly placed in MTA (n = 28) or MPC (n = 26) groups. After completing the pulpotomy procedures, the teeth received a stainless-steel crown. Clinical and radiographic successes/failures were blindly evaluated at 6 and 12 months, and Fisher's exact test was used to analyze the differences. Results: At 6- and 12-month follow-ups, MTA and MPC had 100% clinical success rate. Radiographic success rates of MTA were 92.9% at 6 months and 89.3% at 12 months. While the rate for MPC group was 88.5% at both intervals. There was no statistically significant difference between the two groups. Conclusion: The results of this investigation showed that treatment success rate with MPC was comparable to MTA pulpotomy. However, additional clinical research that considers long-term follow-ups is required to test the usefulness of MPC in the pulpotomy treatment of primary teeth.
Journal of Dental Materials and Techniques
Mashhad University of Medical Sciences
2322-4150
6
v.
4
no.
2017
147
151
https://jdmt.mums.ac.ir/article_9425_af4aade8b8377f0e48aa0c42b8767f0b.pdf
dx.doi.org/10.22038/jdmt.2017.9425
In-vitro Comparison of NiTi Tee, RaCe and Protaper Instruments in Dentinal Crack Formation
EshaghAli
Saberi
Oral and Dental Diseases Research Center and Department of Endodontics, Dental School, Zahedan University of Medical Sciences, Zahedan, Iran
author
Abbas
Mohammadi
Department of Radiology, Faculty of Dentistry, Oral and Dental Disease Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
author
Sediqe
Ebrahimipour
Department of endodontics, Faculty of Dentistry and Dental research center, Birjand University of Medical Sciences, Birjand, Iran
author
Sepideh
Baniasadi
General Dentist, Zahedan, Iran
author
text
article
2017
eng
Background and Aim:Root canal preparation with rotary instruments may cause dentinal cracks leading to tooth fracture. The aim of this study was to compare three different rotary systems ProTaper, RaCe and Niti Tee on formation of dentinal cracks following root canal preparation. Materials and Methods: In this experimental study, 50 extracted mandibular first molars were selected. Teeth having roots with previous cracks and defects were excluded from the study. The crowns and distal roots of teeth were cut. Silicon impression material was used to simulate tooth PDL. The mesial roots were randomly prepared using ProTaper (up to F3) RaCe and Niti Tee systems (up to ≠30/0.06) in three groups of 15. Five teeth remained unprepared as the control group. The specimens were then sectioned horizontally in 3, 5 and 9 mm distances from the apex. Cracks exploration was done by digital stereomicroscope. The occurrence of dentinal cracks with different systems were statistically analyzed by chi-square test. Results: Dentinal defects were observed in 3 (20%), 4 (26.7%) and 2 (13.3) of root canals following the preparation with ProTaper, Niti Tee and RaCe files, respectively. Two of the 3 defects in protaper group were as complete crack. The overall incidence of crack among the rotary files was 20%. No significant differences were found in defect formation between the three rotary systems (P>0.05). Conclusion: Under the condituion of this study Dentinal cracks were observed in all systems. The overall incidence of crack among the rotary files was 20%. Although more cracks were observed in NTiTee group, the differences were not significant.
Journal of Dental Materials and Techniques
Mashhad University of Medical Sciences
2322-4150
6
v.
4
no.
2017
152
158
https://jdmt.mums.ac.ir/article_9426_77ae4aad1d2b74b9721d83417cd45899.pdf
dx.doi.org/10.22038/jdmt.2017.9426
The Effect of Thickness on Sealing Ability of Calcium Enriched Cement as a Coronal Seal Barrier
Shiva
Sadeghi
Associate professor, Dental Sciences Research center, Dept. of Endodontics, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
author
Ramin
Tabari
Assistant professor, Department of Endodontics, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
author
Sepideh
Hosseini
DMD, private practice
author
text
article
2017
eng
Abstract Introduction: Thickness of a coronal seal barrier is an important factor for preventing microleakage. The aim of this in vitro study was to compare the sealing ability of two different thicknesses of calcium Enriched Mixture (CEM) cement as a coronal seal barrier. Methods: A total of 40 canals of extracted maxillary central incisors were instrumented and obturated using lateral compaction technique. The teeth were randomly divided into two experimental (N=15) and two control groups (N=5). For experimental groups, the obturation material was removed up to the experimental depths (2 and 3 mm) and were sealed with CEM. Sealing ability was evaluated by dye penetration method using pelikan ink and a stereomicroscope at x10 magnification and 0.01 mm accuracy. Data was analyzed using T-test and P<0.05. Results: The mean linear dye microleakage for the two thicknesses of CEM cement groups (2mm and 3mm) were 0.930 and 0.67 mm respectively. There was no statistically significant difference between the two groups (p<0.088). Conclusion: under the condition of this in vitro study, coronal microleakage in 2mm thickness of CEM cement had no statistically significant difference with 3 mm thickness of the material.
Journal of Dental Materials and Techniques
Mashhad University of Medical Sciences
2322-4150
6
v.
4
no.
2017
159
162
https://jdmt.mums.ac.ir/article_9438_bb4ca55f0a8116dc0173f72f1ec9289a.pdf
dx.doi.org/10.22038/jdmt.2017.9438
In-vitro evaluation of antibacterial potential of cyanoacrylate tissue adhesives for intraoral wound closure
Murtaza A
Kaderi
Department of Periodontics, KAHE’s KLE V. K. Institute of Dental Sciences, Belagavi
author
K.B
Menaka
Department of Periodontics, KAHE’s KLE V. K. Institute of Dental Sciences, Belagavi
author
Renuka M
Metgud
Department of Periodontics, KAHE’s KLE V. K. Institute of Dental Sciences, Belagavi
author
Mugdha R
Gharat
Department of Periodontics, KAHE’s KLE V. K. Institute of Dental Sciences, Belagavi
author
Priyanka S
Naik
Department of Periodontics, KAHE’s KLE V. K. Institute of Dental Sciences, Belagavi
author
Jyoti M
Ajbani
Department of Periodontics, KAHE’s KLE V. K. Institute of Dental Sciences, Belagavi
author
Pooja P
Naik
Department of Periodontics, KAHE’s KLE V. K. Institute of Dental Sciences, Belagavi
author
Aditi
Mahajani
Department of Periodontics, KAHE’s KLE V. K. Institute of Dental Sciences, Belagavi
author
text
article
2017
eng
Background: Cyanoacrylate tissue adhesives have been used as a substitute to silk for intraoral wound closure. Placement of sutures provides a corridor for accumulation of microorganisms into tissue which leads to infection. Cyanoacrylate-based adhesives exhibit many properties of an ideal wound closure agent, minimizing the problems generated by suturing thread. The antimicrobial properties of cyanoacrylates have been extensively assessed in other fields of medicine. However, there is a dearth in the literature on the antibacterial effect of cyanoacrylates in oral environment against oral microflora. Aim: To assess the antibacterial properties of two commonly used formulations of cyanoacrylate tissue adhesives against oral pathogens. Materials and Methods: Iso-amyl cyanoacrylate and a blend of n-butyl and 2-Octyl cyanoacrylates were applied on sterile filter paper discs and placed on culture plates. Plates for aerobic & anaerobic bacterial cultures were incubated in blood agar & Brain-Heart infusion agar respectively.Following incubation period, the bacterial inhibitory halos were measured in millimeters. In order to evaluate the bactericidal efficacy, samples were collected from the inhibitory halos and re-cultured on new bacterial culture plates. Antibacterial activity was assessed against five bacteria: A.actinomycetemcomitans, P.gingivalis, T.forsythia, L.amylovorus and S.aureus. Statistical analysis used: The data collected was analysed using Mann Whitney u test. Results: Cyanoacrylates demonstrated potent inhibitory effects against all test organisms. The zones of inhibition against gram positive bacteria were found to be larger than gram negative bacteria. The bactericidal activity of Iso amyl cyanoacrylate was found to be more potent than n-butyl + 2 octyl cyanoacrylate. Conclusions: Due to its potent antibacterial properties, cyanoacrylate tissue adhesives can be considered as appealing alternatives to silk sutures for intraoral wound closure and help prevent postoperative.
Journal of Dental Materials and Techniques
Mashhad University of Medical Sciences
2322-4150
6
v.
4
no.
2017
163
169
https://jdmt.mums.ac.ir/article_9437_72d8e04fd7a4e47fd3e320a8fc2d8c42.pdf
dx.doi.org/10.22038/jdmt.2017.9437
The Effect of Adding Different Antibiotics on the Resistance against Bacterial Leakage of AH 26 Sealer
Zahed
Mohammadi
Iranian Center for Endodontic Research, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Islamic Republic of Iran; Iranian National Elite Foundation, Tehran, Islamic Republic of Iran.
author
Luciano
Giardino
Private Practice, Crotone, Italy
author
Flavio
Palazzi
Department of Odontostomatological and Maxillofacial Sciences, Federico II University of Naples, Naples, Italy
author
Raffaele
Paragliola
Department of Endodontics and Restorative Dentistry, University of Siena, Siena, Italy
author
Simone
Grandini
Department of Endodontics and Restorative Dentistry, University of Siena, Siena, Italy
author
Hamid
Jafarzadeh
Department of Endodontics, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
author
text
article
2017
eng
Aim: Most endodontic sealers show antimicrobial activity before setting, but most of them also lose this ability after setting. Addition of an antibiotic may affect the properties of sealers such as sealing ability, setting time, and so on. The aim of this study was to assess whether the addition of antibiotics (amoxicillin, doxycycline, and clindamycin) improves the sealing ability of AH 26 sealer. Materials and Methods: Seventy extracted human mandibular premolars were used. After cleaning and shaping the canals, the teeth were divided into six groups: group 1: gutta-percha and AH 26 sealer, group 2: gutta-percha and AH 26 sealer+doxycycline, group 3: gutta-percha and AH 26 sealer+amoxicillin, group 4: gutta-percha and AH 26 sealer+clindamycin, group 5: gutta-percha without sealer (positive control), and group 6: gutta-percha and AH 26 sealer (the root surfacewere covered with nail varnish) (negative control). A microbial leakage model was used to assess the sealing ability. Results: Group 2 had the greatest resistance against bacterial leakage. Furthermore, combining AH 26 sealer with amoxicillin and clindamycin increased mean leakage time compared to AH 26 sealer solely. However, the differences between groups 1 and 3 as well as between groups 1 and 4 were not statistically significant. Conclusion: Incorporating antibiotics especially doxycycline into AH 26 sealer increases its resistance against bacterial leakage.
Journal of Dental Materials and Techniques
Mashhad University of Medical Sciences
2322-4150
6
v.
4
no.
2017
170
175
https://jdmt.mums.ac.ir/article_9430_49be05b616cdf2251e13805a8079c853.pdf
dx.doi.org/10.22038/jdmt.2017.9430
The evaluation of occlusal relationship between the primary canines and primary molars in 3 to 5-year-old Iranian children
Rasul
Sahebalam
1Oral & Maxillofacial Diseases Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
2Assistant professor of pediatric dentistry , Department of Pediatrics , Faculty of Dentistry , Mashhad University of medical Sciences , Mashhad , Iran
author
Sara
Hajian
DDS , PhD candidate , Department of Dental Public Health , Faculty of Dentistry , Shahid Beheshti University of Medical Sciences , Tehran , Iran
author
Tayebe
Mokarami
DDS, Department of Pediatrics, Faculty of Dentistry, Mashhad University of medical Sciences, Mashhad, Iran
author
text
article
2017
eng
Aim: As to the assessment of occlusal status pertaining to primary canines and molars, the latter is less within reach as it is difficult to guide jaws towards a centric occlusion while maintaining a vintage point in both direct and indirect observation. This study was originally intended to assess primary canine occlusion as a practical indicator in the evaluation of primary molar occlusion, which is otherwise less feasible in dental examination. Method and materials: A total of 281 healthy children (145 males and 136 females), with complete primary dentition and without erupted permanent teeth and serious caries were examined by a trained student of dentistry. Occlusal patterns of primary second molars were noted as flush terminal plane, distal step and mesial step and for primary canine as class I, class II and class III with regard to Angle’s classification. Results: Overall, Class II canine occlusion seemed to have coincided with more than half of the flush terminal molar occlusions (62%), whereas class I was largely associated with mesial step molars (61.2%). This was also found to be applied to cases undergoing unilateral assessment. (p<0.05). Conclusion: In the present study, a significant correlation between the primary canine and molar occlusal patterns (p<0.05) was found on both sides. Importance of study: the evaluation of primary canine occlusion can be used in preschool children as a simple practical method of predicting future discrepancies in the permanent dentition.
Journal of Dental Materials and Techniques
Mashhad University of Medical Sciences
2322-4150
6
v.
4
no.
2017
176
180
https://jdmt.mums.ac.ir/article_9427_cbb74a2b815f468eb74e3735494c31dc.pdf
dx.doi.org/10.22038/jdmt.2017.9427
Comparison of C - reactive protein Levels in Chronic Periodontitis Patients with Normal Subjects
Somaye
Ansari Moghadam
Assistant Professor,Periodontology Department, Oral and Dental Disease Research Center, Zahedan University of Medical Sciences, Zahedan, IR Iran
author
Siavash
ZadFattah
General Dentists, Zahedan University of Medical Sciences, Zahedan, IR Iran
author
Sirous
Risbaf Fakour
Assistant Professor,Oral and Maxillofacial Surgery Department, Oral and Dental Disease Research Center, Zahedan University of Medical Sciences, Zahedan, IR Iran
author
Alireza
Ansari Moghaddam
Associate Professor,Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, IR Iran
author
Mohammad
Naebi
Student of Dentistry, Tabriz University of Medical Sciences, Tabriz, IR Iran
3DMD, private practice
author
text
article
2017
eng
Background: Chronic periodontitis causes systemic inflammation and increases C-reactive protein (CRP). CRP has been implicated as a possible mediator of associating periodontitis and several systemic diseases. The aim of the present study was to investigate systemic levels of CRP in patients with chronic periodontitis in comparison to periodontally healthy individuals. Materials and methods: A total of 80 individuals were included in this study. 40 patients with severe chronic periodontitis aged 40, and 40 sex matched periodontally healthy subjects were recruited from the patients attending Dpartment of Periodontics, Faculty of Dentistry, Zahedan. Body Mass Index (BMI) was under 25 kg/m2 in all the patients and controls. Peripheral blood samples were taken and CRP levels were estimated in serum samples using the C - reactive protein – hs (CRP-hs) LATEX – High sensitivity (Biosystem S.A). Result: CRP levels in women in the test group (3.64 +- 2.77 mg/l) was significantly higher than the women in the control group (p < 0.001); however, the difference between males in the two study groups was not significant (p=0.13). Conclusion: Periodontitis results in higher systemic levels of CRP. Elevated inflammatory factor may increase inflammatory activity in atherosclerotic lesions and potentially increase the risk for cardiovascular events.
Journal of Dental Materials and Techniques
Mashhad University of Medical Sciences
2322-4150
6
v.
4
no.
2017
181
185
https://jdmt.mums.ac.ir/article_9416_861f53951d9a4662c3648e43908c774a.pdf
dx.doi.org/10.22038/jdmt.2017.9416
Delayed Repositioning in Teeth with Horizontal Root Fracture: Two Case Reports
Mahshid
Sheikhnezami
Dental Trauma Clinic, Iranian Academic Center for Education, Culture, and Research (ACECR), Mashhad, Iran
author
Nima
Mokhber
Dental Trauma Clinic, Iranian Academic Center for Education, Culture, and Research (ACECR), Mashhad, Iran
author
Khosro
Shamsian
Dental Trauma Clinic, Iranian Academic Center for Education, Culture, and Research (ACECR), Mashhad, Iran
author
Salman
Saket
1Dental Trauma Clinic, Iranian Academic Center for Education, Culture, and Research (ACECR), Mashhad, Iran
2 Ferdowsi University of Mashhad, Mashhad, Iran
author
Hamid
Jafarzadeh
Dental Trauma Clinic, Iranian Academic Center for Education, Culture, and Research (ACECR), Mashhad, Iran.
Department of Endodontics, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
author
text
article
2017
eng
Introduction: Horizontal root fracture (HRF) generally has a good prognosis of healing at fracture line after repositioning and flexible splinting. However, various factors such as delayed referral may unfavorably influence close reduction of firmly displaced coronal fragments and the long-term prognosis of healing at fracture line. Case 1: A 25-year-old woman with HRF in her maxillary central incisors was referred 1 week after trauma. Repositioning of the displaced coronal fragment was not successful for the left central incisor. Despite questionable prognosis for this case, reduction and flexible splinting was performed after removing it’s coronal fragment, minor curettage in alveolar socket and immediate replanting. Calcium hydroxide dressing and MTA plug placement for the coronal fragment were carried out after 1 and 3 weeks, respectively. The crown was restored and a minor permanent splint was applied after splint removal. Case 2: The above protocol was applied for a 17-year-old boy with HRF in his left maxillary central incisor. He referred 3 weeks after trauma with a firmed displaced coronal fragment. At four-year follow-up in both patients, the teeth were clinically in function and the patients were asymptomatic. The periapical radiographs revealed complete healing at fracture lines.
Journal of Dental Materials and Techniques
Mashhad University of Medical Sciences
2322-4150
6
v.
4
no.
2017
186
190
https://jdmt.mums.ac.ir/article_9439_af10c3b2251614e4bea612602448c721.pdf
dx.doi.org/10.22038/jdmt.2017.9439