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Journal of Dentistry

Farhin Ali Katge, Bhavesh Dahyabhai Rusawat, Pooja Ravindra Shivasharan, Devendra Pandurang Patil
Langer-Giedion syndrome is a very uncommon autosomal dominant genetic disorder caused by the deletion of chromosomal material. It is characterized by multiple bony exostosis, short stature, mental retardation, and typical facial features. The characteristic appearance of individuals includes sparse scalp hair, rounded nose, prominent philtral area and thin upper lip. Some cases with this condition have loose skin in childhood which typically resolves with age. Oral and dental manifestations include micrognathia, retrognathia, hypodontia, and malocclusion based on cephalometric analysis...
September 2016: Journal of Dentistry
Rezvan Rafatjoo, Amene Taghdisi Kashani
Incontinentia pigmenti is a rare genodermatosis in which the skin involvement occurs in all patients. Additionally, other ectodermal tissues may be affected such as the central nervous system, eyes, hair, nails and teeth. The disease has an X-linked dominant inheritance pattern. But in our case, there was a mutation in the body cells due to incontinentia pigmenti. The dermatological findings occur in four successive phases. We report the case of a 10-year-old female presented cutaneous, dental and ophthalmic characteristic with 3 years follow-up...
September 2016: Journal of Dentistry
Faraz Teymouri, Shirin Zahra Farhad, Hedayatollah Golestaneh
STATEMENT OF THE PROBLEM: The presence of bacterial biofilms is the major cause of gingivitis and periodontitis, their mechanical removal is not often enough. Therefore, laser therapy and photodynamic therapy can be effective as adjunctive treatment. PURPOSE: This study aimed to evaluate the impact of these treatments on the level of gingival crevicular fluid (GCF), inflammatory mediators, and periodontal clinical status. MATERIALS AND METHOD: In this clinical trial, three quadrants were studied in 12 patients with chronic periodontitis aged 30-60 years...
September 2016: Journal of Dentistry
Maryam Alsadat Hashemipour, Hoda Mehrabizadeh Honarmand, Farideh Falsafi, Mehrnaz Tahmasebi Arashlo, Saied Rajabalian, Sayed Amir Hossein Gandjalikhan Nassab
STATEMENT OF THE PROBLEM: Use of cyclooxygenase inhibitors as chemotherapy agents has attracted the attention of a large number of investigators in recent years. Given the importance of cancer therapy, only a limited number of studies have been carried out to investigate the effects of cyclooxygenase inhibitors on specific cell lines. PURPOSE: This research aimed to determine the in vitro cytotoxic effects of cyclooxygenase inhibitors (COX-1 and COX-2 inhibitors) on KB, Saos-2, 1321N, U-87MG, SFBF-PI 39 cell lines...
September 2016: Journal of Dentistry
Mohammad Motamedifar, Hengameh Khosropanah, Shima Dabiri
STATEMENT OF THE PROBLEM: Dental caries is one the most prevalent diseases that affects humans throughout their lives. Streptococcus mutans (S. mutans) is recognized as the most important microorganism during tooth cariogenicity. Reducing this germ in oral cavity can reduce the rate of tooth decays in humans. PURPOSE: The present study compared the antimicrobial activity of ethanolic extract of Peganum harmala L. seeds and 0.2% chlorhexidine on S. mutans. MATERIALS AND METHOD: Agar diffusion technique and micro broth dilution method were employed to test the antimicrobial effects of these two agents on S...
September 2016: Journal of Dentistry
Reza Tabrizi, Ata Garajei, Ehsan Shafie, Samira Jamshidi
STATEMENT OF THE PROBLEM: Neoadjuvant chemotherapy (NCH) is controversial in the treatment of oral squamous cell carcinoma (OSCC). PURPOSE: The aim of this study was to evaluate the efficacy of NCH on OSCC prognosis. MATERIALS AND METHOD: In this retrospective cohort study, 94 patients were studied in two groups. The patients in group 1 received NCH before the surgery, and those in group 2 underwent resection without any chemotherapy prior to surgery...
September 2016: Journal of Dentistry
Hanieh Mehrpour, Ehsan Farjood, Rashin Giti, Alireza Barfi Ghasrdashti, Hossein Heidari
STATEMENT OF THE PROBLEM: Mechanical properties of interim restorations are considered as important factors specially when selecting materials for long-term application or for patients with para-functional habits. Flexural strength is one of the most important components of these restorations. PURPOSE: The purpose of this study was to compare the flexural strength of five interim restorative materials. MATERIALS AND METHOD: Fifty identical samples sized 25×2×2-mm were made from five interim materials (TempSpan; Protemp 4, Unifast III, Trim, and Revotek LC) according to ADA specification #27...
September 2016: Journal of Dentistry
Ardeshir Ranjbari, Gholam Ali Gholami, Reza Amid, Mahdi Kadkhodazadeh, Navid Youssefi, Amir Reza Mehdizadeh, Maryam Aghaloo
STATEMENT OF THE PROBLEM: Gingival recession has been considered as the most challenging issue in the field of periodontal plastic surgery. PURPOSE: The purpose of this study was to evaluate the clinical efficacy of root coverage procedures by using partial thickness double pedicle graft and compare it with full thickness double pedicle graft. MATERIALS AND METHOD: Eight patients, aged 15 to 58 years including 6 females and 2 males with 20 paired (mirror image) defects with class I and II gingival recession were randomly assigned into two groups...
September 2016: Journal of Dentistry
Sanaz Helli, Hossein Damghani, Daryoush Mohajeri, Mehran Mesgari Abbasi, Rana Attaran, Maryam Zahed
STATEMENT OF THE PROBLEM: Oral cancer is among the ten most common cancers worldwide. It affects the life quality of patients in many ways. PURPOSE: The aim of this study was to compare the effects of two different systemic doses of Viola Odorata syrup on the prevention of 4-Nitroquinoline-1-oxide (4-NQO) induced tongue dysplasia in rats. MATERIALS AND METHOD: Forty-eight male Wistar rats were divided into four groups of A, B, C and D. Group A served as the control group...
September 2016: Journal of Dentistry
Abdolaziz Haghnegahdar, Alireza Shakibafard, Negar Khosravifard
STATEMENT OF THE PROBLEM: Impaction of foreign bodies in the soft tissues is a sequela of traumatic and penetrating injuries. Such foreign bodies should be removed due to the complications they cause. Patient's history, clinical evaluation and imaging examinations aid in the proper detection and localization of the foreign bodies. PURPOSE: The aim of the present study was to compare the sensitivity of computed tomography (CT) and ultrasonography for detecting foreign bodies in in-vitro models simulating facial soft tissues...
September 2016: Journal of Dentistry
Fahimeh Rashidi Maybodi, Ahmad Haerian Ardakani, Ali Fattahi Bafghi, Alireza Haerian Ardakani, Akram Zafarbakhsh
STATEMENT OF THE PROBLEM: Trichomonas tenax and Entamoeba gingivalis are commensal protozoa which inhabit the human oral cavity. These parasites are found in patients with poor oral hygiene and might be a reason for progressive periodontal diseases. PURPOSE: The aim of this study was to evaluate the effect of nonsurgical periodontal treatment on the frequency of these protozoa in saliva and plaque samples. MATERIALS AND METHOD: In this clinical trial, samples of saliva and dental plaque were collected from 46 patients with moderate to severe chronic periodontitis before and after periodontal therapy...
September 2016: Journal of Dentistry
Manu Dhillon, Srinivasa M Raju, Raviprakash S Mohan, Divya Tomar
STATEMENT OF THE PROBLEM: Treatment with salivary substitutes and stimulation of salivary flow by either mechanical or pharmacologic methods has side effects and only provides symptomatic relief but no long-lasting results. PURPOSE: To assess the effectiveness of extraoral transcutaneous electric nerve stimulation (TENS) as a mean of stimulating salivary function in healthy adult subjects; as well as to determine the gender and age-dependent changes in salivary flow rates of unstimulated and stimulated parotid saliva...
September 2016: Journal of Dentistry
Fatemeh Jahanimoghadam, Lida Pishbin, Maryam Rad
Regional odontodysplasia is a developmental anomaly that affects the primary and permanent dentitions. This disorder is generally localized in only one arch and its etiology is still unknown. Clinically, the affected teeth have an abnormal morphology and are typically discolored. Radiographically, these teeth show a ghost-like appearance. This paper reported the results of radiographic, histologic and laboratory findings about the case of a 5-year-old girl presenting this rare anomaly. Her familial history was negative for any genetic anomaly, regional odontodysplasia or other dental anomalies...
June 2016: Journal of Dentistry
Narges Gholizadeh, Masoumeh Mehdipour, Bita Rohani, Vahid Esmaeili
Extramedullary plasmacytomas are rare solitary soft tissue tumors that arise from proliferations of malignant transformed monoclonal plasma cells and can be diagnosed through biopsy and histopathologic examination. These lesions are closely associated with multiple myelomas, which should be ruled out in all these cases by necessary laboratory and radiographic examinations. A 25-year-old man was referred to our clinic with a rapidly-growing painless lesion measuring about 2.5×3×3 cm in the palatal side of the left maxillary second and third molar teeth...
June 2016: Journal of Dentistry
Parichehr Behfarnia, Ahmad Aslani, Foroogh Jamshidian, Soheil Noohi
STATEMENT OF THE PROBLEM: According to previous studies, the components of green tea extracts can inhibit the growth of a wide range of gram-pos-itive and -negative bacterial species and might be useful in controlling oral infections. PURPOSE: The aim of this study was to determine the effect of green tea chewing gum on the rate of plaque and gingival inflammation in subjects with gingivitis. MATERIALS AND METHOD: In this double-blind randomize controlled clinical trial, 45 patients with generalized marginal gingivitis were selected and divided into two groups of green tea (23) and placebo (22) chewing gum...
June 2016: Journal of Dentistry
Farahnaz Sharafeddin, Marzie Moradian, Mehran Motamedi
STATEMENT OF THE PROBLEM: The adhesion of resin-modified glass-ionomer (RMGI) to composite resin has a very important role in the durability of sandwich restorations. Hydroxyapatite is an excellent candidate as a filler material for improving the mechanical properties of glass ionomer cement. PURPOSE: The aim of this study was to assess the effect of adding micro- and nano-hydroxyapatite (HA) powder to RMGI on the shear bond strength (SBS) of nanofilled and silorane-based composite resins bonded to RMGI containing micro- and nano-HA...
June 2016: Journal of Dentistry
Maryam Paknahad, Shoaleh Shahidi, Marzieh Akhlaghian, Masoud Abolvardi
STATEMENT OF THE PROBLEM: Finding a significant relationship between temporomandibular joint (TMJ) morphology and the incidence of temporomandibular dysfunction (TMD) may help early prediction and prevention of these problems. PURPOSE: The purpose of the present study was to determine the morphology of mandibular fossa and the articular eminence inclination in patients with TMD and in control group using cone beam computed tomography (CBCT). MATERIALS AND METHOD: The CBCT data of bilateral TMJs of 40 patients with TMD and 23 symptom-free cases were evaluated...
June 2016: Journal of Dentistry
Nooshin Sadat Shojaee, Alireza Adl, Fereshte Sobhnamayan, Fatima Vasei
STATEMENT OF THE PROBLEM: Correct proportioning and mixing are essential to ensure cements attain their optimum physical properties. PURPOSE: The aim of this experimental study was to evaluate the influence of various mixing techniques including manual, mechanical mixing, and ultrasonic vibration on push-out bond strength of calcium enriched mixture (CEM). MATERIALS AND METHOD: Ninety 2-mm-thick dentin disks were prepared from single-rooted human teeth and filled with CEM mixed with manual, trituration, or ultrasonic methods...
June 2016: Journal of Dentistry
Tahereh Ghaffari, Ali Barzegar, Fahimeh Hamedi Rad, Elnaz Moslehifard
STATEMENT OF THE PROBLEM: The mechanical and thermal properties of polymethyl methacrylate (PMMA) acrylic resin should be improved to counterweigh its structural deficiencies. PURPOSE: The aim of this study was to compare the flexural strength and thermal conductivity of conventional acrylic resin and acrylic resin loaded with nanoclay. MATERIALS AND METHOD: The methacrylate monomer containing the 0.5, 1 and 2 wt% of nanoclay was placed in an ultrasonic probe and mixed with the PMMA powder...
June 2016: Journal of Dentistry
Somayeh Nemati, Anahita Ashouri Moghadam, Zahra Dalili Kajan, Seyedeh Tahereh Mohtavipour, Hasan Amouzad
STATEMENT OF THE PROBLEM: Insufficient information about the anatomical positions and structure of mandibular canal provokes unwanted damage to this important structure of mandible. PURPOSE: The aim of this study was to determine the visibility and anatomical variations of mandibular canal in digital panoramic radiographs of dentulous and edentulous patients in a sample of Iranian population. MATERIALS AND METHOD: In this retrospective-analytical research, 249 digital panoramic radiographs in dentulous group and 126 in edentulous group were studied by an expert oral and maxillofacial radiologist...
June 2016: Journal of Dentistry
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