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Dental Research Journal

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https://www.readbyqxmd.com/read/29238383/plasma-rich-in-growth-factors-in-dogs-two-sides-of-the-same-coin
#1
Eduardo Anitua, Roberto Prado, Gorka Orive
No abstract text is available yet for this article.
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29238382/a-case-of-central-mucoepidermoid-carcinoma-associated-with-dentigerous-cyst
#2
Sayed Mohammad Razavi, Roya Yahyaabadi, Saeedeh Khalesi
Mucoepidermoid carcinoma (MEC) is the most common malignant salivary gland neoplasm. Central MEC (CMEC) is a rare primary intraosseous bony lesion with an incidence of 2%-4.3% of all MECs reported. In this article, we present a rare case of a CMEC in the anterior region of maxilla at a 43-year-old female patient that was arising from a dentigerous cyst. CMECs are extremely rare tumor. They are usually low-grade lesions with favorable prognosis. Odontogenic cysts are one of the origins of this lesion. Treatment of impacted tooth is necessary in the early stage for prevention of this neoplasm...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29238381/assessment-of-the-anterior-loop-of-mental-nerve-in-an-iranian-population-using-cone-beam-computed-tomography-scan
#3
Mitra Karbasi Kheir, Mahnaz Sheikhi
Background: The anterior loop is an important structure in the interforaminal area of the mandible. The aim of the present study was to assess the prevalence and length of the anterior loop of mental nerve using cone beam computed tomography (CBCT) scan and to compare the differences between age, gender, and side. Materials and Methods: A total of 180 projections were analyzed in different sectional planes. The inferior alveolar nerve was determined. To measure the length of anterior loop in tangential plane, two parallel lines from the anterior point of mental foramen and anterior point of anterior loop were drawn...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29238380/static-and-kinetic-frictional-forces-of-silica-insert-ceramic-brackets-with-coated-archwires-in-artificial-saliva
#4
Mostafa Shahabi, Soheil Salari, Maryam Poosti, Mostafa Abtahi
Background: During sliding mechanics, the frictional force (FF) is an important counterforce to orthodontic tooth movement. The purpose of this in vitro study was to investigate the static and kinetic FFs of S silica-insert ceramic (SIC) brackets with Teflon-coated (TC) and conventional S stainless steel (SS) archwires. Materials and Methods: The target group of this study included 80 maxillary canine 0.022 inch slot SIC brackets. Forty SS brackets were used as the control...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29238379/correlation-of-vitamin-d-status-and-orthodontic-induced-external-apical-root-resorption
#5
Azita Tehranchi, Azin Sadighnia, Farnaz Younessian, Amir H Abdi, Armin Shirvani
Background: Adequate Vitamin D is essential for dental and skeletal health in children and adult. The purpose of this study was to assess the correlation of serum Vitamin D level with external-induced apical root resorption (EARR) following fixed orthodontic treatment. Materials and Methods: In this cross-sectional study, the prevalence of Vitamin D deficiency (defined by25-hydroxyvitamin-D) was determined in 34 patients (23.5% male; age range 12-23 years; mean age 16...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29238378/association-of-macrophage-migration-inhibitory-factor-gene-polymorphisms-with-chronic-periodontitis-in-a-south-eastern-iranian-population
#6
Zahra Heidari, Hamidreza Mahmoudzadeh-Sagheb, Mohammad Hashemi, Somayeh Ansarimoghaddam, Bita Moudi, Nadia Sheibak
Background: Macrophage migration inhibitory factor (MIF) is a key proinflammatory mediator. It plays a vital role in immune response against the oral disease. MIF is a regulator of innate immunity, and bacterial antigens can stimulate serum level of this protein. In experimental gingivitis, the expression level of MIF increases and this increment positively correlates with oral plaque index. The single nucleotide polymorphisms in the gene encoding the MIF protein can control the function of MIF...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29238377/masking-ability-of-a-zirconia-ceramic-on-composite-resin-substrate-shades
#7
Farhad Tabatabaian, Sima Shabani, Mahshid Namdari, Koroush Sadeghpour
Background: Masking ability of a restorative material plays an important role to cover discolored tooth structure; however, this ability has not yet been well understood in zirconia-based restorations. This study assessed the masking ability of a zirconia ceramic on composite resin substrates with different shades. Materials and Methods: Ten zirconia disc specimens, with 0.5 mm thickness and 10 mm diameter, were fabricated by a computer-aided design/computer-aided manufacturing system...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29238376/the-effect-of-different-root-canal-sealers-on-the-fracture-resistance-of-endodontically-treated-teeth-in-vitro-study
#8
Anuve Hrishi Phukan, Shivani Mathur, Meera Sandhu, Vinod Sachdev
Background: The aim of this study was to compare the in vitro effects of four different root canal sealers on the fracture resistance of endodontically treated teeth. Materials and Methods: Seventy-five freshly extracted human mandibular premolars were used for the study. Teeth were divided into five groups based on type of root canal sealers used. Gutta-percha was used for all the samples: Group I: AH Plus root canal sealer, Group II: MTA Fillapex root canal sealer, Group III: Apexit root canal sealer, Group IV: Conventional zinc oxide-eugenol (ZOE) sealer, Group V: Control (unobturated teeth)...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29238375/allergic-rhinitis-and-dental-caries-in-preschool-children
#9
Mehdi Bakhshaee, Sara Jafari Ashtiani, Mana Hossainzadeh, Samineh Sehatbakhsh, Mona Najaf Najafi, Maryam Salehi
Background: Allergic rhinitis (AR) may be overdocumented in cases of dental caries because of controversies in the literature This study was conducted to investigate the potential relationship between AR and dental caries in children. Materials and Methods: A total of 296 children were included in this cross-sectional study. Participants were evaluated using the decay-missing-filled (DMF) index, and their AR status was evaluated by physical examination and through a standard questionnaire...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29238374/zygoma-implants-in-oral-rehabilitation-a-review-of-28-cases
#10
Rowland Agbara, Elizabeth Goetze, Felix Koch, Wilfred Wagner
Background: The functional and esthetic rehabilitation of patients with atrophic maxilla or posterior maxillary defect is often challenging. The aim of this study was to determine patient demographics, indications, success rate, and complications following the use of zygoma implants. Materials and Methods: All patients who had zygoma implant placement in our clinic between 1998 and 2013 were retrospectively assessed for implant outcome. Data were analyzed using Statistical Package for the Social Sciences (SPSS) version 16 and Microsoft Excel 2007 test for significance (ρ) using Pearson's Chi-square (χ2) set at 0...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29238373/guided-tissue-regeneration-and-platelet-rich-growth-factor-for-the-treatment-of-grade-ii-furcation-defects-a-randomized-double-blinded-clinical-trial-a-pilot-study
#11
Niloofar Jenabian, Sina Haghanifar, Hodis Ehsani, Ehsan Zahedi, Masumeh Haghpanah
Background: The treatment of furcation area defects remained as a challenging issue in periodontal treatments. Regeneration treatment of furcation defects is the most discussed periodontal treatment. Although not completely hopeless in prognosis, the presence of the furcation involvement significantly increases the chance of tooth loss. The current research was conductedeto compare theeadditive effect of combined guided tissue regeneration (GTR) and platelet-rich growth factor (PRGF) on the treatment of furcation bony defects...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29109753/agenesis-of-permanent-canines-rare-case-report
#12
Sumit Kumar Yadav, Achla Bharti Yadav, Neal Bharat Kedia, Abhinav Kumar Singh
Agenesis of permanent canines is a rare condition, and that of both maxillary and mandibular permanent canines is extremely rare. It may occur either isolated or in association with other dental anomalies. Reports of such cases are very scarce in the literature. Need for early diagnosis of such conditions should be emphasized because of functional, esthetic, and psychological problems which should be evaluated and treated appropriately. The present paper presents a report of bilaterally missing permanent maxillary and mandibular canines...
September 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29109752/management-of-exaggerated-gag-reflex-in-dental-patients-using-intravenous-sedation-with-dexmedetomidine
#13
Aleksei P Reshetnikov, Anton A Kasatkin, Aleksandr L Urakov, Dmitrii Y Baimurzin
Pharmacological sedation is one of the effective ways of prevention of gag reflex development in patients experiencing anxiety and fright before dental treatment. We are reporting a case where we could successfully eliminate exaggerated gag reflex (intravenous [IV] Gagging Severity Index) in a dental patient using IV sedation with dexmedetomidine. IV administration of dexmedetomidine provided elimination of gag reflex at a depth of sedation for the patient with the Richmond Agitation-Sedation Scale score of -2 and -1...
September 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29109751/the-relation-of-preoperative-stress-and-anxiety-on-patients-satisfaction-after-implant-placement
#14
Houman Khorshidi, Fatemeh Lavaee, Janan Ghapanchi, Ali Golkari, Sara Kholousi
Background: There are some factors which can affect preoperative patient anxiety such as the necessity of procedure, postoperative pain, and patient's conception of his body image. The aim of this study was to assess the relation of patients' preoperative anxiety and postoperative patients' satisfaction in dental implant surgery. Materials and Methods: Dental implants were placed in 40 patients (19 male and 21 female) who were referred to Dental Implant Surgery Department in Imam Reza clinic, during March-December of 2014 in Shiraz...
September 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29109750/microbial-microleakage-assessment-of-class-v-cavities-restored-with-different-materials-and-techniques-a-laboratory-study
#15
Hossein Nematollahi, Ali Bagherian, Kiarash Ghazvini, Habibollah Esmaily, Mina Azadegan Mehr
Background: The aim of this study was to compare microbial microleakage of class V cavities restored with different materials and techniques using a microbial leakage assessment method. Materials and Methods: One hundred extracted, caries-free, human maxillary premolars were randomly divided into five groups. Group 1: Resin-modified glass ionomer (RMGI), Group 2: Closed sandwich with flowable composite + nanohybrid composite, Group 3: Nanohybrid composite, Group 4: Closed sandwich with RMGI + nanohybrid composite, and Group 5: Flowable composite + nanohybrid composite that were co-cured together ("snow-plow" technique)...
September 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29109749/push-out-bond-strength-of-different-intracanal-posts-in-the-anterior-primary-teeth-according-to-root-canal-filling-materials
#16
Nilgoon Pasdar, Bahman Seraj, Mostafa Fatemi, Shirin Taravati
Background: This study was carried out to evaluate the effect of root canal filling on the bond strength of three intracanal posts in the primary incisors. Materials and Methods: Sixty primary incisors were prepared and then divided into two groups (n = 30). The first group canals obturated with zinc oxide eugenol (ZOE) and Group 2 canals obturated with Metapex. Further, the two group categories were divided into three subgroups (n = 10): (1) short composite post (SCP), (2) glass fiber posts (GFPs) cemented with flowable composite, and (3) GFP with glass ionomer cement (GFP + GIC)...
September 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29109748/do-increased-drilling-speed-and-depth-affect-bone-viability-at-implant-site
#17
Reza Tabrizi, Ali Dehghani Nazhvanai, Mohammad Mahdi Farahmand, Sara Yasour Pourali, Sepanta Hosseinpour
Background: The aim of this study was to assess the effect of increasing the drilling speed and depth during implant site preparation on bone viability. Materials and Methods: In this prospective cohort study, participants were divided into four groups based on the speed and depth of drilling at the first molar site in the mandible. Participants underwent drilling at Group 1: 1000 rpm and 10 mm depth, Group 2: 1500 rpm and 10 mm, Group 3: 1000 rpm and 13 mm, and Group 4: 1500 rpm and 13 mm...
September 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29109747/effect-of-finishing-polishing-techniques-and-time-on-surface-roughness-of-esthetic-restorative-materials
#18
Prashanthi Sampath Madhyastha, Shreya Hegde, N Srikant, Ravindra Kotian, Srividhya Sriraman Iyer
Background: Surface roughness associated with improper finishing/polishing of restorations can result in plaque accumulation, gingival irritation, surface staining, and poor esthetic of restored teeth. The study aimed to evaluate the efficiency of various finishing and polishing systems and time using various procedures on surface roughness of some esthetic restorative materials. Materials and Methods: In this in vitro study, samples of two composite materials, compomer and glass ionomer cement (GIC) materials, were fabricated...
September 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29109746/comparative-evaluation-of-root-canal-morphology-of-mandibular-premolars-using-clearing-and-cone-beam-computed-tomography
#19
Abbasali Khademi, Mojdeh Mehdizadeh, Maryam Sanei, Hamidreza Sadeqnejad, Saber Khazaei
Background: Different techniques are used to evaluate the anatomy of root canal system. The present study was aimed to evaluate the root canal morphology of mandibular premolars using clearing and cone beam computed tomography (CBCT) techniques. Materials and Methods: A total of 182 mandibular first and second premolars were evaluated in vitro using 100 μm CBCT cross sections. The root canal morphology of the teeth was determined based on Vertucci classification in relation to the prevalence of C-shaped canals, lateral canals, and furcation location...
September 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29109745/evaluation-of-myofibroblasts-in-oral-submucous-fibrosis-and-oral-squamous-cell-carcinoma-the-pathogenesis-and-correlation
#20
Piyush Gandhi, Umesh Chandra Prasad
Background: Oral submucous fibrosis (OSMF) is a chronic debilitating disease of the oral cavity having premalignant potential and unclear pathogenesis. Recently, myofibroblast has been postulated to play an important role in its pathogenesis and in the process of carcinogenesis. The purpose of this study was to evaluate and compare the presence of myofibroblasts in normal mucosa, different grades of OSMF, and oral squamous cell carcinoma (OSCC). Materials and Methods: The present in vitro cross-sectional descriptive study sample consisted of three groups, including 40 OSCCs, 40 OSMF, and 10 sections of normal oral epithelium taken as control group...
September 2017: Dental Research Journal
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