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Journal of Dentistry

Irineu Gregnanin Pedron, Alessandro Mangano
The pursuit of esthetic excellence has become a major goal in the dental treatment and orthodontic treatment. The beauty of the smile is not only constituted by the shape, position, and size of the teeth, but also based on the characteristics of the gingival tissue and conformation of the lips, which should be as harmonious as teeth. Gummy smile is one of the complaints of the patients, since such a situation can influence self-esteem and social relationships. The development of new more conservative techniques may provide a better therapeutic option than surgical procedures, such as the application of botulinum toxin, in the treatment of gummy smile...
September 2018: Journal of Dentistry
Shaik Izaz, Nagesh Bolla, Bhargavi Dasari, Shilpa Guntaka
Dens Invaginatus is a developmental disturbance resulting from abnormal morpho differentiation. It is characterized by an invagination of the enamel and dentin, creating a lumen inside the affected tooth, which may extend as deep as the apical foramen. In the present scenario, calcified Oehler's type IIIb dens invaginatus in left maxillary lateral incisor in 23-year-old male patient was seen. As the two-dimensional imaging lacks accuracy in such complicated cases, cone beam computed tomography was used to assess the calcification three dimensionally...
September 2018: Journal of Dentistry
Mohammad Rafiei, Faezeh Kiani, Kourosh Sayehmiri, Fatemeh Sayehmiri, Mostafa Tavirani, Majid Dousti, Abdolkarim Sheikhi
Statement of the Problem: Periodontal diseases are complex oral diseases characterized by bacterial-induced inflammatory destruction of tooth-supporting tissues. Porphyromonas gingivalis ( P. gingivalis ) is a common gram-negative anaerobic oral bacteria strongly associated with periodontal disease. Purpose: The present study was conducted to estimate prevalence of P. gingivalis in patients with periodontal diseases by using meta-analysis method. Martials and Method: Different databases including PubMed, EmBase, Scopus, the Institute for Scientific Information (ISI) Web of Science, and the Cochrane Library were searched to identify original English-language studies addressing prevalence of P...
September 2018: Journal of Dentistry
Maryam Rad, Arash Shahravan, Ali Akbar Haghdoost
Statement of the Problem: Oral and general health status depends on several factors such as the individual's personal attributes, behaviors, and perceptions. Purpose: This study aimed to evaluate the factors affecting the oral health-related behaviors in 12-year-old children. Materials and Method: This cross-sectional study was based on the data obtained from 1554 students being 12 years old and from five provinces in Iran. The data were collected with a culturally adapted questionnaire about the students' demographic characteristics, knowledge, attitudes, and practice (KAP)...
September 2018: Journal of Dentistry
Ali Mahmoud Hashemi, Hamid Mahmoud Hashemi, Shiva Solahaye Kahnamouii, Talieh Mahmoud Hashemi, Hassan Agajani, Khalil Frozannia, Alireza Pournasrollah, Rasoul Sadeg, Rasoul Estakhri, Ebrahim Razmpa, Naghmeh Bahrami
Statement of the Problem: Oral squamous cell carcinoma is the most common oral malignancy. Toll-like receptor (TLR) activation led to alterations in the levels of mRNA encoding the TLR accountable for recognizing the inducing agonist and cross-regulation of other TLR. Purpose: The purpose of this study is determination of mitogen-associated protein kinase (MAPK) activation in human immortalized oral epithelial cell (HIOEC) line via up regulating of TLR7. Materials and Method: expression of TLR7 was measured in HIOEC and normal cells by quantitative real-time polymerase chain reaction (qRT-PCR) and samples were calibrated by β-actin...
September 2018: Journal of Dentistry
Ayla Bahramian, Maria Bahramian, Masoumeh Mehdipour, Parisa Falsafi, Saeed Khodadadi, Fatemeh Dabaghi Tabriz, Mina Deljavanghodrati
Statement of the Problem: Lichen planus disease is a chronic inflammatory lesion without a known etiology. Recent studies have indicated the role of vitamin D on immune system and proposed its anti-inflammatory effects. Purpose: This study aimed to compare vitamin D serum levels in patients with oral lichen planus and healthy subjects. Materials and Method: In this case‒control study, 18 patients suffering from oral lichen planus referred to the Department of Oral Medicine, Tabriz Faculty of Dentistry were chosen as the case group and 18 healthy people were chosen as the control group...
September 2018: Journal of Dentistry
Amir Ali Reza Khaledi, Mahroo Vojdani, Mitra Farzin, Soudabeh Pirouzi
Statement of the Problem: Considering the limitations of conventional sintering of zirconium oxide (ZrO2 ) copings, shortening the sintering time can be proposed as an alternative method for making the copings. Purpose: This study aimed to assess the effects of sintering time on compressive strength of Yttria Tetragonal Zirconia Polycrystal (Y-TZP) copings. Materials and Method: Thirty copings of pre-sintered 3Y-TZP blanks were milled and sintered in a special furnace for three different durations (n=10 per group)...
September 2018: Journal of Dentistry
Azita Tehranchi, Farnaz Younessian, Vida Fadaei, Fariba Arabgol, Armin Shirvani
Statement of the Problem: It is postulated that attention deficit/hyperactivity disorder (ADHD) with or without medication has an inhibitory effect on the children's growth and development. Purpose: This study aimed to assess the dental age and cervical vertebral maturation (CVM) stage in ADHD patients with or without medication. Materials and Method: This cross-sectional study evaluated the pretreatment panoramic and lateral cephalograms of 129 patients (70 males, 59 females aged 8-14 years)...
September 2018: Journal of Dentistry
Hamed Modanloo, Hamidreza Eftekharian, Hamidreza Arabiun
Statement of the Problem: Extraction of the impacted third molar is often associated with severe postoperative pains, management of which are a big challenge. Lamotrigine is a new antiepileptic drug with pre-emptive analgesic properties, which is hypothesized to alleviate postoperative pain. Purpose: This study aimed to evaluate the efficacy of pre-operative administration of single oral 200 mg lamotrigine in reducing the postoperative pain of impacted third molar surgery...
September 2018: Journal of Dentistry
Nader Navabi, Reza Motaghi, Mandana Rezazadeh, Hatam Balooch
Statement of the Problem: Reduced bone mineral density (BMD) generally affects postmenopausal women and it is classified into moderate (osteopenia) and significant osteoporosis. Based on digital panoramic radiographs (DPRs), several quantitative and qualitative assessment methods have been proposed for the diagnosis and evaluation of bone changes and as a predictor of BMD. Purpose: The aim of this study was to compare mandibular cortical width (MCW) and mandibular cortical index (MCI) derived from DPRs in evaluating the BMD in osteopenic and osteoporotic post-menopausal women...
September 2018: Journal of Dentistry
Sadaf Adibi, Anita Amrollahi, Ali Dehghani Nazhvani, Najmeh Movahhedian
Statement of the Problem: After introducing digital radiography, practitioners started reading radiographs from computer monitors; however, many still prefer hard-copy radiographs. Purpose: This study aimed to assess the possible superiority of either type of radiograph recording media (computer monitor, film, or paper) in diagnosis and perception of the depth of the cariogenic lesions. Materials and Method: Twenty digital bitewing radiographs, obtained from 200 posterior extracted teeth, were displayed on an LG monitor and printed on paper and film using Kodak printers...
September 2018: Journal of Dentistry
Fatemeh Lavaee, Janann Ghapanchi, Mohammad Motamedifar, Maryam Sharifzade Javidi
Statement of the Problem: The rate of antibiotic resistance in bacteria and side effects of antibiotics and oral and teeth health care products are increasing. Therefore, researchers aim at finding new alternatives to control bacteria of dental caries. Purpose: The objective of this study was to investigate the inhibitory and bactericidal effects of different concentrations of zinc sulfate and zinc acetate solutions on the main recognized agent of dental caries, Streptococcus mutans ...
September 2018: Journal of Dentistry
Saede Atarbashi-Moghadam, Ali Lotfi, Shokoufeh Shahrabi-Farahani, Fazele Atarbashi-Moghadam
Solitary myofibroma is an uncommon benign soft tissue neoplasm of myofibroblastic origin exhibiting head and neck region predilection but its presence in the jaws is rare. Myofibroma presents as painless mass and may demonstrate rapid enlargement and growth that clinically mimic malignancies. This report presents a 4-year-old male patient with a rapidly growing mandibular gingival mass with some evidence of underlying alveolar bone destruction. Incisional biopsy was performed and the specimen was stained with hematoxylin and eosin and immunohistochemical antibodies for αSMA, CD34, S100 and desmin...
June 2018: Journal of Dentistry
Tsutomu Sugiura, Kazuhiko Yamamoto, Kazuhiro Murakami, Satoshi Horita, Yumiko Matsusue, Chie Nakashima, Tadaaki Kirita
Immune thrombocytopenic purpura (ITP) is an immune-mediated acquired disease found in both adults and children. It is characterized by transient or persistent decreases in the platelet count. We report a case of ITP detected based on oral hemorrhagic symptoms. The patient was a 79-year-old female with no significant past medical history. She presented with sudden onset of gingival bleeding and hemorrhagic bullae on the buccal mucosa. Gingival bleeding was difficult to control. Laboratory tests revealed severe thrombocytopenia with a platelet count as low as 2000/μL...
June 2018: Journal of Dentistry
Fatemeh Jahanimoghadam, Azadeh Horri, Naimeh Hasheminejad, Naser Hashemi Nejad, Mohammad Reza Baneshi
Statement of the Problem: In dentistry, incorrect working posture is the most important cause of musculoskeletal disorders. Purpose: The aim of this research was to evaluate the work postures of general dentists and specialists using rapid entire body assessment (REBA) method. Materials and Method: In this cross-sectional study, work postures were assessed in 90 dentists by employing REBA method. Stratified sampling method was used. Data were analyzed by analysis of variance (ANOVA), Independent t-test and Pearson's correlation test in SPSS 19...
June 2018: Journal of Dentistry
Maryam Kouhsoltani, Mahsa Abdolhosseinzadeh, Ayla Bahramian, Maedeh Vakili Saatloo, Fatemeh Dabbaghi Tabriz, Tala Pourlak
Statement of the Problem: Macrophages are the target of attention in numerous diseases. Many studies reported them as the regulators of the growth, dissemination, and clinical behavior of various lesions. There are relatively scarce data regarding the role of macrophages in oral lesions, particularly odontogenic lesions. Purpose: This study investigated the macrophage density in odontogenic lesions of diverse biologic performance. Materials and Method: In this comparative analytical study, 60 cases of odontogenic lesions including ameloblastoma, keratocystic odontogenic tumor, dentigerous cyst, and radicular cyst were immunohistochemically stained with anti-CD68 antibody...
June 2018: Journal of Dentistry
Shoaleh Shahidi, Parisa Salehi, Parnian Abedi, Mehrnoush Dehbozorgi, Shahram Hamedani, Nazanin Berahman
Statement of the Problem: Temporomandibular joint disorders (TMD) may show a poor correlation between their clinical findings and radiological characteristics. Purpose: The aim of this study was to assess the osseous alterations of temporomandibular joint (TMJ) in symptomatic and asymptomatic subjects by employing cone beam computed tomography (CBCT) images. Materials and Method: In this study, CBCT images of 120 temporomandibular joints in 30 patients with TMJ disorder and 30 age- and sex-matched individuals without TMJ complaints were evaluated...
June 2018: Journal of Dentistry
Parviz Deyhimi, Batoul Alishahi
Statement of the Problem: Pemphigus vulgaris is characterized by intraepithelial vesicles, but pathogenesis of vesicle formation in this disease has not been substantiated yet. Purpose: The present study investigate extrinsic apoptotic pathway in oral pemphigus vulgaris using TUNEL and important immunohistochemical markers of extrinsic pathway, TNFR1 and FasL. Materials and Method: In the present cross sectional study, 25 oral pemphigus vulgaris samples and 6 normal oral mucosa were analyzed for the presence of apoptosis by TUNEL and the staining of TNFR1 and FasL in basal and parabasal layers around vesicle, vesicle floor, vesicle roof and acantholytic cells...
June 2018: Journal of Dentistry
Hamid Ghaderi, Mahboobeh Razmkhah, Farin Kiany, Nooshafarin Chenari, Mohammad Reza Haghshenas, Abbas Ghaderi
Statement of the Problem: One major goal of tissue engineering and regenerative medicine is to find an appropriate source of mesenchymal stem cells (MSCs) with higher differentiation ability. Purpose: In this experimental study, the osteogenic and chondrogenic differentiation ability of buccal fat pad derived MSCs (BFP-MSCs) with gingival derived cells (GDCs) were compared. Materials and Method: BFP-MSCs and GDCs were cultured enzymatically and expanded...
June 2018: Journal of Dentistry
Atena Shiva, Ali Zamanian, Shahin Arab, Mahsa Boloki
Statement of the Problem: Oral lichen planus is a common mucocutaneous lesion with a chronic inflammatory process mediated by immune factors while a few cases of the disease become malignant. Purpose: This study aimed to determine the frequency of p53 marker as a tumor suppressor in patients with erosive and non-erosive oral lichen planus (OLP) by using immunohistochemical methods. Materials and Method: This descriptive cross-sectional study investigated the p53 expression in 16 erosive OLP, 16 non-erosive OLP samples, and 8 samples of normal oral mucosa through immunohistochemistry...
June 2018: Journal of Dentistry
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