Read by QxMD icon Read

Dental Research Journal

Seyed Javad Ghazi-Mirsaeid, Fatemeh Masoudi
No abstract text is available yet for this article.
May 2018: Dental Research Journal
Gholamreza Jahanshahi, Elham Arzhang, Soheila Derisavy, Laleh Davoodi, Salman Shakeri
Ameloblastoma is a locally invasive tumor derived from odontogenic epithelium. An uncommon variant of ameloblastoma is granular cell type, which cannot distinguish from other ameloblastoma subtypes by clinical and radiographic findings alone. Only review of it's microscopic features allows distinction from other subtypes. The purpose of this article is to present a case of granular cell ameloblastoma. This subtype should be distinguished from the other histopathologic subtypes because of it's higher recurrence rate and more aggressive biological behavior...
May 2018: Dental Research Journal
Rangeeth Bollam Nammalwar, Joyson Moses, Sathya Jeeva
Among oral pathologic lesions, odontomas are the most common odontogenic tumor of the jaws and generally asymptomatic. They are mostly diagnosed as a result of routine radiographic investigation. In this report, we describe a very rare occurrence of bilateral complex odontoma in the region of the mandibular second premolar. Conservative surgical procedure was planned, and removal of the odontomas was carried out through the socket after extraction of the deciduous second molars, and the diagnosis was confirmed with a histopathological study...
May 2018: Dental Research Journal
Hui Theng Chee, Wan Zaripah Wan Bakar, Zuryati Ab Ghani, Bennett T Amaechi
Background: Composite resin (CR) currently is one of the most commonly used material in restoring noncarious cervical lesions (NCCL) due to its strength and esthetics color but has microleakage problem. The aim of this study is to compare in vitro the microleakage depth between CR and porcelain in restoring NCCL. Materials and Methods: This an in vitro study was done by preparing cavities on the buccocervical surface of 62 extracted premolar teeth which randomly assigned to two groups ( n = 31) where Group 1 was restored with nanocomposite and Group 2 was cemented with porcelain cervical inlays...
May 2018: Dental Research Journal
Shahla Momeni Danaei, Shabnam Ajami, Hamideh Etemadi, Niloofar Azadeh
Background: Literature is controversial in regard with alterations in pharyngeal airway dimensions subsequent to maxillary protraction. The correlation between maxillary protraction and sagittal airway dimension was investigated in association with tongue and soft palate position in skeletal Class III children. The results were compared with those of an untreated Class III and a Class I malocclusion control group. Materials and Methods: In this cross-sectional study pre- and post-treatment cephalometric radiographs of 19 Class III patients (6 males, 13 females; mean age, 7...
May 2018: Dental Research Journal
Iman Parisay, Yegane Khazaei
Background: Stainless steel crown (SSC) is the most reliable restoration for primary teeth with extensive caries. Retention is of great importance for a successful restoration and is provided by various factors such as luting cements. The aim of this study was to evaluate the retentive strength of SSC cemented with four different luting cements. Materials and Methods: In this in vitro study, A total of 55 extracted primary first molars were selected. Following crown selection and cementation (one with no cement and four groups cemented with resin, glass ionomer, zinc phosphate, and polycarboxylate), all the specimens were incubated and thermocycled in 5°C-55°C...
May 2018: Dental Research Journal
Abolfazl Aslani, Behzad Zolfaghari, Yeganeh Fereidani
Background: The herpes simplex virus is a human pathogen which can cause skin or mucous membrane infections. Melissa, sumac, licorice, rosemary, and geranium have antimicrobial, antiviral, anti-inflammatory, and local analgesic effect. Shortening recovery period of recurrent herpes labialis and control of viral protein formation are the other effects of these herbs. The aim of this study is design, formulation, and evaluation of the gel containing extracts of these five herbs. Materials and Methods: In this experimental study after photochemical and macroscopic evaluation of these medicinal herbs, the semisolid concentrated extracts were incorporated in gel bases...
May 2018: Dental Research Journal
Krishnan Mahalakshmi, Padma Krishnan, S C Chandrasekaran
Background: Aggregatibacter actinomycetemcomitans has been reported in higher proportions in subgingival microbiota of individuals with aggressive periodontitis (AgP) compared with those with chronic periodontitis (ChP) and healthy controls. The major virulence factors are the ones that help in colonization and evasion of host's defenses. Hence, this study was aimed to assess the prevalence of A. actinomycetemcomitans 16S rRNA and its virulent genotypes (leukotoxin [ lktA ] and fimbria-associated protein [ fap ])...
May 2018: Dental Research Journal
Mehrnaz Moradinezhad, Mina Moradi, Milad Shamohammadi, Elham Hormozi, Amir Ghorani
Background: By increasing the number of adults seeking orthodontic treatment bonding orthodontic brackets to the surfaces other than intact enamel has become necessary. The purpose of this study was to evaluate the effect of three different surface preparation methods associated with orthodontic bonding on porcelain color alteration. Materials and Methods: In this in vitro study forty-five porcelain discs (6- mm diameter, 2- mm thickness) were fabricated. The color of the specimens was evaluated by means of a Vita Easyshade...
May 2018: Dental Research Journal
Amir Arsalan Navabi, Abbas Ali Khademi, Masoud Khabiri, Paridokht Zarean, Parichehr Zarean
Background: Bacteria and their by-products are etiological factors for the failure of endodontic treatment. Reduction of root canal bacterial contamination is one of the chief aims of root canal therapy. The aim of this study was to compare the effects of different rotary file tapers and two irrigation fluids on Enterococcus faecalis counts. Materials and Methods: In this ex vivo study Root canals of 72 human upper lateral incisors were enlarged to ISO #20 K-file...
May 2018: Dental Research Journal
Claudio Poggio, Matteo Viola, Maria Mirando, Marco Chiesa, Riccardo Beltrami, Marco Colombo
Background: Acidic beverages, such as soft drinks (orange juice and cola), can produce erosion of resin composites. The aim of this in vitro study was to evaluate the effect of immersion in acidic drink on the Vickers microhardness (VK) of different esthetic restorative materials (one nanohybrid Ormocer-based composite, one nanoceramic composite, one nanofilled composite, and one microfilled hybrid composite). Materials and Methods: In this in vitro study, thirty specimens of each esthetic restorative material were divided into three subgroups ( n = 10): specimens of group 1 were used as control, specimens of group 2 were immersed in 50 ml of acidic drink for 1 day, specimens of group 3 were immersed in 50 ml of acidic drink for 7 days...
May 2018: Dental Research Journal
Fatemeh Mashhadiabbas, Hossein Neamatzadeh, Rezvan Nasiri, Elnaz Foroughi, Soudabeh Farahnak, Parisa Piroozmand, Mahta Mazaheri, Masoud Zare-Shehneh
Background: There has been increasing interest in the study of the association between Vitamin D receptor (VDR) gene polymorphisms and risk of chronic periodontitis. However, the results remain inconclusive. To better understand the roles of VDR polymorphisms (BsmI, TaqI, FokI, and ApaI) in chronic periodontitis susceptibility, we conducted this systematic review and meta-analysis. Materials and Methods: The PubMed, Google Scholar, and Web of Science database were systemically searched to determine all the eligible studies about VDR polymorphisms and risk of chronic periodontitis up to April 2017...
May 2018: Dental Research Journal
Saeed Noorollahian, Farinaz Shirban
Maxillary permanent incisors have a major role in facial esthetics. Impaction of them has great adverse effect on smile and causes serious concerns in patient and parents. Physical barriers (e.g., overretained primary teeth, supernumerary teeth, and pathologic lesions), space problems, developmental abnormalities, altered eruption sequence, trauma, palatal clefts, and genetics can act as etiologic factors. Currently, the conventional technique to treatment of impacted teeth consists of a combined orthodontic and surgical approach, to guide the impacted teeth in a constant position and surrounded by normal hard and soft tissues...
March 2018: Dental Research Journal
Ahmad Pirzadeh-Ashraf, Mehrdad Lotfi, Ali Zarandi, Ebrahim Yazdani, Aysan Mozafari, Alireza Pornasrollah
Background: Mineral trioxide aggregate (MTA) has a high biocompatibility and its physical properties could be improved by adding the containing silica fume an amorphous silicon dioxide (condensed silica fume [CSF]). The aim of this study was to evaluate the cytotoxicity of MTA mixed with CSF on the viability of L929 mouse fibroblast cell using 3-(4,5-dimethylthiazol-2-Yl)-2,5-diphenyltetrazolium bromide reduction assay (MTT assay). Materials and Methods: In this in vitro study white MTA was mixed with distilled water according to the manufacturer's instructions...
March 2018: Dental Research Journal
Batool Hashemi-Beni, Maryam Khoroushi, Mohammad Reza Foroughi, Saeed Karbasi, Abbas Ali Khademi
Background: The aim of this study was to compare the cytotoxicity and the biocompatibility of three different nanofibers scaffolds after seeding of stem cells harvested from human deciduous dental pulp. Given the importance of scaffold and its features in tissue engineering, this study demonstrated the construction of polyhydroxybutyrate (PHB)/chitosan/nano-bioglass (nBG) nanocomposite scaffold using electrospinning method. Materials and Methods: This experimental study was conducted on normal exfoliated deciduous incisors obtained from 6-year-old to 11-year-old healthy children...
March 2018: Dental Research Journal
Mohammadreza Nabavizade, Freshte Sobhnamayan, Hale Bahrami, Mahmoud Rafieian-Kopaei, Abbas Abbaszadegan
Background: An ideal root canal irrigant should be able to enhance the wettability of sealer to dentin walls. The aim of this study was to survey the contact angle between AH 26 sealer and dentin surface irrigated by four herbal essential oils, compared with normal saline and 5.25% sodium hypochlorite (NaOCl). Materials and Methods: In this in vitro study, 60 longitudinal dentin slices were obtained from thirty extracted single-rooted human mandibular first premolars...
March 2018: Dental Research Journal
Karla Rovaris, Liana Matos Ferreira, Thiago Oliveira Sousa, Leonardo Vieira Peroni, Deborah Queiroz Freitas, Ann Wenzel, Francisco Haiter-Neto
Background: Micro-computed tomography (micro-CT) has been widely described as a nondestructive in vitro imaging method although its accuracy for caries detection is still unclear. The aim of this study was to investigate the feasibility of micro-CT to detect and classify proximal caries lesions in posterior teeth, using different protocols. Materials and Methods: In this in vitro study, crowns of 122 human teeth were scanned with Skyscan 1174 (Bruker, Kontich, Belgium) using the full-scan mode (360°)...
March 2018: Dental Research Journal
A R Divia, Mali G Nair, Jolly Mary Varughese, Shobha Kurien
Background: Endodontic infections require effective removal of microorganisms from the root canal system for long-term prognosis. Sodium hypochlorite (NaOCl) is the most effective irrigant currently, but potential complications due to its toxicity warrant search for newer alternatives. In this study, the antimicrobial efficacy of Morinda citrifolia (MC), green tea polyphenols and Triphala was compared with 5% NaOCl against Enterococcus faecalis . Materials and Methods: In this in vitro study sixty extracted human premolar teeth were infected with E...
March 2018: Dental Research Journal
Bahareh Nazemisalman, Surena Vahabi, Ali Yazdinejad, Fatemeh Haghghi, Mahsa Shabbuii Jam, Fatemeh Heydari
Background: Different irrigating solutions with high antimicrobial activity have been introduced for cleaning of the root canal system. However, effects of Prangos ferulacea (PF), Ziziphora tenuior (ZT), Dracocephalum moldavica (DM), and Ferula gummosa (FG) on oral and dental pathogens have not been extensively evaluated due to their optimal biocompatibility and insignificant side effects. The aim of this study was to evaluate the antibacterial effects of essential oils of mentioned plants on Enterococcus faecalis ...
March 2018: Dental Research Journal
Zahra Alizadeh Tabari, Forooz Keshani, Majid Sharbatdaran, Amirhossein Banishahabadi, Marziyeh Nejatifard, Hossein Ghorbani
Background: Visfatin, also known as nicotinamide phosphoribosyltransferase, has been suggested as a pro-inflammatory and immunomodulating marker for periodontitis. The aim of this study was an immunohistochemical analysis of visfatin in gingival tissues of patients with chronic periodontitis and aggressive periodontitis. Materials and Methods: In this cross-sectional study based on clinical evaluation and inclusion and exclusion criteria. Twenty patients with generalized chronic periodontitis, 13 patients with generalized aggressive periodontitis, and 20 periodontally healthy individuals enrolled...
March 2018: Dental Research Journal
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"