journal
MENU ▼
Read by QxMD icon Read
search

Journal of Dentistry of Tehran University of Medical Sciences

journal
https://www.readbyqxmd.com/read/29296116/a-new-method-for-surgical-treatment-of-subcondylar-fractures-a-case-report
#1
Gholamreza Shirani, Mahnaz Arshad, Kamran Rasouli, Touraj Vaezi
Subcondylar fractures are common in the maxillofacial region following direct trauma to the mandibular ramus. The literature is replete with articles written on the treatment of subcondylar fractures, encompassing a plethora of various surgical approaches; however, the best treatment procedure has remained controversial. Such fractures are either treated by open reduction with internal fixation or closed reduction with maxillomandibular fixation. In this article, we describe a new surgical method for treatment of subcondylar fractures...
September 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29296115/comparison-of-the-dentin-bond-strength-of-two-self-etch-adhesives-after-prolonged-air-drying-and-additional-light-curing
#2
Pouran Samimi, Masoud Ghodrati, Farinaz Shirban, Maryam Khoroushi
Objectives: It has been reported that the water, solvents, or the primer incorporated into adhesive resins decrease the polymerization, compromise the mechanical properties, reduce the bond strength, and lead to a poor bonding performance of self-etch adhesives. This article evaluated the effect of air-drying and light-curing duration of self-etch adhesives on the micro-shear bond strength between composite resin and dentin. Materials and Methods: A total of 120 extracted sound human third molars were randomly divided into twelve groups (n=10)...
September 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29296114/effect-of-spatial-position-in-the-field-of-view-on-dimensional-changes-in-cone-beam-computed-tomography
#3
Mehrdad Panjnoush, Yasaman Kheirandish, Negar Zeini
Objectives: This study aimed to assess the relation between dimensional changes and object location in the field of view (FOV) using cone beam computed tomography (CBCT). Materials and Methods: A custom-made phantom was fabricated from base plate wax. To analyze the accuracy of measurements in horizontal and longitudinal dimensions, aluminum squares (0.5 mm thickness, 10×10 mm dimensions) were constructed and placed in three levels (upper, middle, and lower) and five positions (central, right, left, anterior and posterior)...
September 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29296113/effect-of-different-types-of-toothpaste-on-the-frictional-resistance-between-orthodontic-stainless-steel-brackets-and-wires
#4
Tahereh Hosseinzadeh Nik, Tabassom Hooshmand, Homa Farhadifard
Objectives: The purpose of this study was to investigate the effect of different types of toothpaste on the frictional resistance between stainless steel brackets and archwires. Materials and Methods: Ninety stainless steel orthodontic brackets with stainless steel wires were bonded to bovine teeth and were divided into 6 groups for application of the following toothpastes: Colgate® Total® Advanced Whitening, Colgate® Total® Pro Gum Health, Colgate® Anticavity, Ortho...
September 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29296112/preventive-effect-of-glycyrrhiza-glabra-extract-on-oral-mucositis-in-patients-under-head-and-neck-radiotherapy-a-randomized-clinical-trial
#5
Shamsolmolok Najafi, Soraiya Ebrahimpour Koujan, Soheila Manifar, Mohammad Javad Kharazifard, Saba Kidi, Samira Hajheidary
Objectives: About two-thirds of cancer patients undergo radiotherapy. Oral mucositis represents a major complication of radiotherapy, causing morbidity and mortality and decreasing the quality of life of patients. This study aimed to assess the preventive effect of Glycyrrhiza aqueous extract on oral mucositis in cancer patients under head and neck radiotherapy. Materials and Methods: In this double-blind clinical trial, 37 head and neck cancer patients were divided into intervention (n=19) group receiving Glycyrrhiza aqueous extract and control (n=18) group receiving placebo...
September 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29296111/effect-of-surface-treatment-on-enamel-cracks-after-orthodontic-bracket-debonding-er-cr-ysgg-laser-etching-versus-acid-etching
#6
Hassanali Ghaffari, Amirhossein Mirhashemi, Tahereh Baherimoghadam, Amir Azmi, Reza Rasooli
Objectives: This study sought to compare enamel cracks after orthodontic bracket debonding in the surfaces prepared with erbium, chromium: yttrium-scandium-galliumgarnet (Er,Cr:YSGG) laser and the conventional acid-etching technique. Materials and Methods: This in-vitro experimental study was conducted on 60 sound human premolars extracted for orthodontic purposes. The teeth were randomly divided into two groups (n=30). The teeth in group A were etched with 37% phosphoric acid gel, while the teeth in group B were subjected to Er,Cr:YSGG laser irradiation (gold handpiece, MZ8 tip, 50Hz, 4...
September 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29296110/effect-of-sodium-fluoride-mouthwash-on-the-frictional-resistance-of-orthodontic-wires
#7
Allahyar Geramy, Tabassom Hooshmand, Tahura Etezadi
Objectives: The friction between the brackets and orthodontic wire during sliding mechanics inflicts difficulties such as decreasing the applied force and tooth movement and also the loss of anchorage. Therefore, many studies have focused on the factors that affect the friction. The purpose of this study was to assess the effect of 0.05% sodium fluoride mouthwash on the friction between orthodontic brackets and wire. Materials and Methods: Four types of orthodontic wires including rectangular standard stainless steel (SS), titanium molybdenum alloy (TMA), nickel-titanium (NiTi) and copper-nickel-titanium (Cu-NiTi) were selected...
September 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29296109/preventive-orientation-of-iraqi-dentists-in-baghdad-in-2016
#8
Fatin Abd Alsttar Aledhari, Katayoun Sargeran, Mahdia Gholami, Ahmad Reza Shamshiri
Objectives: The aim of the present study was to assess the preventive orientation of Iraqi dentists in terms of their "knowledge" and "attitude" towards caries prevention and to explore their "preventive practice". Materials and Methods: A cross-sectional study based on a self-administered questionnaire was conducted among 159 dentists who worked in Baghdad during the summer of 2016. The questionnaires obtained information on variables such as knowledge and attitude towards preventive dentistry, preventive practice and demographic variables and were distributed during the official working time...
September 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29285034/performance-of-preschoolers-mothers-and-senior-dental-students-after-receiving-training-on-fluoride-varnish-administration
#9
Simin Zahra Mohebbi, Samaneh Razeghi, Zahra Chinipardaz, Hamideh Soleimannejad, Mohammad Javad Kharazifard
Objectives: Fluoride varnish application is an effective way to prevent caries in children. We aimed to educate preschool children's mothers on how to apply fluoride varnish and compare their performance with dental students and to assess their self-reported competency six months later. Materials and Methods: Eighty-eight 4-6-year-old children presenting to toy houses of six randomly selected health centers in a non-affluent district of Tehran in 2014 were divided into two groups to receive fluoride varnish by their mothers and students...
July 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29285033/flexural-strength-of-polymethyl-methacrylate-repaired-with-fiberglass
#10
Fariba Golbidi, Maryam Amini Pozveh
Objectives: The purpose of this experimental study was to discover a method to increase the strength of repaired polymethyl methacrylate (PMMA) samples. Materials and Methods: In this experimental study, 40 specimens with the dimensions of 65×10×2.5mm3 were fabricated using heat-curing acrylic resin. Sixteen specimens were repaired with fiberglass and self-curing PMMA, while 16 samples were repaired with self-curing PMMA. Eight specimens were left intact as the control group...
July 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29285032/effect-of-filtration-and-thickness-of-cross-sections-of-cone-beam-computed-tomography-images-on-detection-of-proximal-caries
#11
Mehrdad Abdinian, Rahman Nazeri, Marzieh Ghaiour
Objectives: When a patient has cone beam computed tomography (CBCT) images based on the treatment plan, it is possible to use these images for evaluation of caries, and there is no need for new radiographs, according to the "as low as reasonably achievable" (ALARA) principle. The aim of this study was to determine the effect of filtration and thickness of CBCT cross-sections on detection of proximal caries. Materials and Methods: In this in-vitro study, 100 teeth were placed in the dental sockets of a dry skull, and were fixed in normal proximal contacts...
July 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29285031/efficacy-of-modified-bioactive-glass-for-dentin-remineralization-and-obstruction-of-dentinal-tubules
#12
Mahshid Saffarpour, Maryam Mohammadi, Mohammadreza Tahriri, Azadeh Zakerzadeh
Objectives: This study assessed the efficacy of modified bioactive glass (MBG) for dentin remineralization and obstruction of dentinal tubules. Materials and Methods: Thirty-six dentin discs were made from 20 third molars and were stored in 12% lactic acid solution for two weeks to induce demineralization. The samples were divided into three groups (n=12): 1- BG, 2- BG modified with 5% strontium (Sr) and 3- BG modified with 10% Sr. After applying the BG, the samples were stored in artificial saliva for 7, 14 and 21 days...
July 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29285030/proliferative-and-anti-inflammatory-effects-of-resveratrol-and-silymarin-on-human-gingival-fibroblasts-a-view-to-the-future
#13
Minoo Shahidi, Farzaneh Vaziri, Ahmad Haerian, Amir Farzanegan, Soudeh Jafari, Roya Sharifi, Fatemeh Sadeghi Shirazi
Objectives: It has been demonstrated that polyphenol components such as silymarin and resveratrol have anti-inflammatory properties. Periodontitis is a chronic inflammatory disease that leads to the breakdown of dental supporting tissues and tooth loss. The purpose of this study was to investigate the anti-inflammatory effects of silymarin and resveratrol on lipopolysaccharide (LPS)-induced inflammatory response in human gingival fibroblasts (HGFs). Materials and Methods: HGFs were treated with different concentrations of silymarin and/or resveratrol (25, 50, 100 and 200μg/ml)...
July 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29285029/establishment-and-characterization-of-primary-cultures-from-iranian-oral-squamous-cell-carcinoma-patients-by-enzymatic-method-and-explant-culture
#14
Meysam Ganjibakhsh, Pouyan Aminishakib, Parvaneh Farzaneh, Abbas Karimi, Seyed Abolhassan Shahzadeh Fazeli, Moones Rajabi, Ahmad Nasimian, Fereshteh Baghai Naini, Hedieh Rahmati, Neda Sadat Gohari, Nazanin Mohebali, Masoumeh Asadi, Zahra Elyasi Gorji, Mehrnaz Izadpanah, Shiva Mohamadi Moghanjoghi, Sepideh Ashouri
Objectives: Oral Squamous Cell Carcinoma (OSCC) is the most frequent oral cancer worldwide. It is known as the eighth most common cancer in men and as the fifth most common cancer in women. Cytogenetic and biochemical studies in recent decades have emphasized the necessity of providing an appropriate tool for such researches. Cancer cell culture is a useful tool for investigations on biochemical, genetic, molecular and immunological characteristics of different cancers, including oral cancer...
July 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29285028/perception-of-iranian-mothers-about-oral-health-of-their-school-children-a-qualitative-study
#15
Zahra Momeni, Katayoun Sargeran, Reza Yazdani, Shirin Shahbazi Sighaldeh
Objectives: Oral health is an important aspect of general health and well-being for children. Understanding the viewpoint of mothers about children's oral health provides a basis for the development of interventions to improve oral care and disease prevention. The purpose of this study was to explore the perception of Iranian mothers regarding the oral health of their children. Materials and Methods: This descriptive qualitative study was the first phase of an exploratory mixed method design and collected data from April to May 2015 in Tehran, Iran...
July 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29285027/comparison-of-the-level-of-substance-p-and-neurokinin-a-in-gingival-crevicular-fluid-of-sound-and-symptomatic-carious-primary-teeth-by-elisa
#16
Alireza Heidari, Mehdi Shahrabi, Marzieh Salehi Shahrabi, Mehdi Ghandehari, Pegah Rahbar
Objectives: Pulpal inflammation is often associated with odontogenic pain. Dental pulp is abundantly innervated with sensory fibers encompassing neuropeptides. Neurokinin A (NKA) and substance P (SP) are important neuropeptides in the dental pulp that can cause neurogenic inflammation. Since no previous study has assessed dental pulp neuropeptides in children, this study aimed to compare the level of NKA and SP in gingival crevicular fluid (GCF) of sound and symptomatic carious primary teeth...
July 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29167689/fatigue-fracture-strength-of-implant-supported-full-contour-zirconia-and-metal-ceramic-fixed-partial-dentures
#17
Fariborz Vafaee, Farnaz Firouz, Masoumeh Khoshhal, Amirarsalan Hooshyarfard, Armaghan Shahbazi, Ghodratollah Roshanaei
Objectives: Zirconia restorations have been suggested as a more durable and more appealing alternative to metal restorations. However, their mechanical properties may be negatively affected by fatigue due to superficial stresses or low temperature degradation. This study aimed to assess the fatigue fracture strength of three-unit implant-supported full contour zirconia and pre-sintered cobalt-chromium (Co-Cr) alloy posterior fixed partial dentures (FPDs). Materials and Methods: In this in-vitro experimental study, 28 posterior three-unit implant-supported FPDs were fabricated of full contour zirconia and pre-sintered Co-Cr alloy, and were cemented on implant abutments...
May 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29167688/effect-of-quaternary-ammonium-salt-on-shear-bond-strength-of-orthodontic-brackets-to-enamel
#18
Hannaneh Ghadirian, Allahyar Geramy, Farhood Najafi, Soolmaz Heidari, Hamid Golshahi
Objectives: This study sought to assess the effect of quaternary ammonium salt (QAS) on shear bond strength of orthodontic brackets to enamel. Materials and Methods: In this in vitro experimental study, 0, 10, 20 and 30% concentrations of QAS were added to Transbond XT primer. Brackets were bonded to 60 premolar teeth using the afore-mentioned adhesive mixtures, and the shear bond strength of the four groups (n=15) was measured using a universal testing machine...
May 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29167687/effect-of-self-adhesive-and-separate-etch-adhesive-dual-cure-resin-cements-on-the-bond-strength-of-fiber-post-to-dentin-at-different-parts-of-the-root
#19
Ehsan Mohamadian Amiri, Fariba Balouch, Faezeh Atri
Objectives: Bonding of fiber posts to intracanal dentin is challenging in the clinical setting. This study aimed to compare the effect of self-adhesive and separate etch adhesive dual cure resin cements on the bond strength of fiber post to dentin at different parts of the root. Materials and Methods: This in-vitro experimental study was conducted on 20 single-rooted premolars. The teeth were decoronated at 1mm coronal to the cementoenamel junction (CEJ), and the roots underwent root canal treatment...
May 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29167686/comparison-of-enamel-morphologic-characteristics-after-conditioning-with-various-combinations-of-acid-etchant-and-er-yag-laser-in-bonding-and-rebonding-procedures-a-sem-analysis
#20
Mohammad Sadegh Ahmad Akhoundi, Ardavan Etemadi, Maryam Nasiri, Elahe Soltanmohamadi Borujeni
Objectives: Many studies have evaluated re-etched enamel by using scanning electron microscopy (SEM); however, there is no evidence regarding the use of Erbium-doped yttrium aluminium garnet (Er:YAG) laser at primary and secondary bonding instead of acid etching with regards to enamel surface changes. The purpose of the present study was to determine that whether or not the methods of primary and secondary enamel preparation affect enamel characteristics after rebonding, by using SEM analysis...
May 2017: Journal of Dentistry of Tehran University of Medical Sciences
journal
journal
40870
1
2
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"