Journal of Dentomaxillofacial
5
2
2016
8
1
Iranian Dental Students’ Level of Knowledge Regarding the Interpretation of Radiographic Images of Oral Lesions: Is the Standard Training Sufficient?
1
5
EN
Somayyeh
Azimi
Oral Medicine Shahid Beheshti University of Medical Sciences, Tehran, Iran/ Honorary research flew, the International Research Collaborative – Oral Health and Equity, University of Western Australia
N
Maryam
Tofangchiha
oral and maxillofacial Radiology, Qazvin University of Medical Sciences, Qazvin, Iran
N
Mohammad
Shapoori
Private practice
N
Nasrin
Rafieian
Dental School, Alborz University of Medical Sciences, Karaj, Iran
Y
10.18869/acadpub.3dj.5.2.1
Introdouction:
Dentists need to be able to diagnose jaw lesions due to professional responsibilities to refer affected patients for expeditious treatment as needed. The objective of this study was to assess the knowledge of senior dental students in Qazvin University of Medical Sciences regarding the interpretation of radiographic images of oral lesions. The study took place in 2011–2012.
Materials and methods:
This descriptive-analytical trial involved 36 dental students enrolled in the practical and theoretical radiology course and oral medicine during their final educational session. A questionnaire was designed, and students were asked to express their diagnoses following observation and interpretations of nine different diagnostic aspects in dental images in 3 questions and write the first probable diagnosis for 10 items in one question. The students’ scores were calculated and statistically analyzed by one-sided analysis of variance and student t-tests.
Results:
The students’ mean score was 14.32 ± 2.09, out of a maximum score of 20. The maximum and minimum scores of participants were 18.0 and 10.5, respectively. No significant differences were noted between the scores of male and female students.
Conclusion:
In total, participating students demonstrated an acceptable level of knowledge in the interpretation of radiographic images.
Dental Radiography, Dental Students , Knowledge
http://3dj.gums.ac.ir/article-1-224-en.html
http://3dj.gums.ac.ir/article-1-224-en.pdf
Journal of Dentomaxillofacial
5
2
2016
8
1
The Prevalence of Salivary Gland Mucoepidermoid Carcinoma in Iran: An 11 years’ retrospective study
6
10
EN
Ali
Lotfi
Department of Oral and Maxillofacial Pathology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
N
Saede
Atarbashi Moghadam
Department of Oral and Maxillofacial Pathology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Y
Fateme
Karami
Rasht
N
Saman
Salehi Zalani
Shahid Beheshti University of Medical Sciences, Tehran, Iran
N
Seyedeh Sara
Bagheri
Department of Oral and Maxillofacial Pathology, Guilan University of Medical Sciences, Rasht, Iran
N
10.18869/acadpub.3dj.5.2.6
Introdouction:
Mucoepidermoid carcinoma (MEC) is one of the most common salivary gland malignancies. The prevalence of salivary gland tumors varies in different geographic areas. In this report, we evaluated the prevalence of MEC in Iran and compared it with that previously reported in other countries.
Materials and methods:
The files of oral pathology, Shahid Beheshti University of Medical Sciences, Amiralam and Taleghani hospitals, served as the source of the material from 2001 to 2011 for this study. Information, including patient’s age, gender, tumor location, clinical symptoms and histopathologic grade was recorded. Mann-Whitney test was used for statistical analysis.
Results:
Mucoepidermoid carcinoma accounted for 24.1% of salivary gland malignancies during the 11-year period. Most cases were diagnosed in the third to fifth decades of life and the male to female ratio was 1:03. The parotid gland was the most common location (49.5%). Tumor grading was available for 92 neoplasms and of them, 39.13% was graded low, 32.6% was intermediate and 28.26% was high grade. Swelling, pain and ulceration existed in 68.6%, 30.4% and 4.8% of patients, respectively. Forty-four point forty-five per cent of cases that demonstrated pain were high grade, 29.6% were intermediate, and 25.9% were low grade (p = 0.03). High grade tumors were more common in males (p = 0.06).
Conclusion:
The mean age, site of involvement, sex of patient, and microscopic grading of salivary gland MEC in the Iranian population were found to be similar to those of most other countries.
Mucoepidermoid Carcinoma, Salivary Glands, Neoplasms
http://3dj.gums.ac.ir/article-1-225-en.html
http://3dj.gums.ac.ir/article-1-225-en.pdf
Journal of Dentomaxillofacial
5
2
2016
8
1
Evaluation of Gingival Microleakage of Colored Compomers in Primary Teeth: an in vitro Study
11
16
FA
Effat
Khodadadi
Dental Materials Research Center, Department of Pediatric Dentistry, Faculty of Dentistry, Babol University of Medical Sciences , Babol, Iran
N
Behnaz
Esmaeili
Dental Materials Research Center, Department of Operative Dentistry, Faculty of Dentistry, Babol University of Medical Sciences , Babol, Iran
Y
Shirin
Valizadegan
Babol University of Medical Sciences, Babol, Iran
N
Ali
Bizhani
Babol University of Medical Sciences, Babol, Iran
N
Romina
Sadreshkevary
Keck School of Medicine of USC, University of Southern California, Los Angeles, USA
N
10.18869/acadpub.3dj.5.2.11
Introduction:
Microleakage is a major factor affecting the longevity of adhesive restorations. Colored compomer is a new restorative material that was specifically designed for the restoration of primary molars in different colors, but their microleakage is unknown. This study was carried out to compare the microleakage of a colored compomer (Twinky star) and a conventional compomer (F2000) with a microhybride composite (Z250).
Materials and methods:
In this in vitro study, class V cavities were prepared on buccal surfaces of 30 caries free extracted primary molars with gingival margins 1 mm below the Cemento Enamel Junction. The teeth were filled as follow: Group I: single bond2(3M, ESPE, USA) + composite (Z250, 3M); Group II: Solobond M (VOCO, Germany) + colored compomer (Twinky star, VOCO); Group III: single bond2 + compomer (F2000, 3M).After polishing the restorations, all specimens were stored in distilled water for 6 days. Then, the samples were thermocycled for 500 cycles and placed in 0.5% fuchsine solution for 48 hours. The samples were sectioned longitudinally and evaluated for microleakage under a stereomicroscope (MoticMicro Optic, industrial group Co, LTD, Japan) at 40x magnification. Dye penetration was scored on a 0–4 ordinal scale. Data were analyzed using SPSS 14, Kruskal-Wallis, and Mann Whitney ranks tests. The level of significance was set at P < 0.05.
Results:
There was no significant difference in the gingival microleakage of Twinky star and Z250 (P = 0.374), but the difference was significant between these two materials and F2000 compomer (P < 0.05). The most microleakage was observed in F2000 compomer.
Conclusion:
According to this study, due to their relatively low microleakage, special glitter, attractiveness to children, and release of fluoride, colored compomers might be an appropriate restorative material for restoration of primary teeth.
Composite Resins, Compomers, Dental leakage, Primary teeth
http://3dj.gums.ac.ir/article-1-226-en.html
http://3dj.gums.ac.ir/article-1-226-en.pdf
Journal of Dentomaxillofacial
5
2
2016
8
1
Relationship between Dental Development and Cervical Vertebrae Development Assessed Using Radiography in an Iranian Population
17
23
FA
Zahra
Tafakhori
Department of Oral and Maxillofacial Radiology, School of Dentistry and Dental Research Centre, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
Y
Mahboubeh
Shokrizadeh
School of Dentistry and Dental Research Centre, Rafsanjan University of medical sciences, Rafsanjan, Iran
N
Mahmood
Sheikh Fathollahi
Department of Epidemiology and Biostatistics and Occupational Environment Research Center, Medical School, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
N
10.18869/acadpub.3dj.5.2.17
Introduction:
Determining the skeletal age and remaining growth potential of patients are important factors in orthodontic treatment. Evaluating cervical vertebrae development is a reliable method for determining skeletal age. This study aimed to evaluate the correlation between dental calcification and stages of skeletal maturation.
Materials and methods:
This descriptive cross-sectional study was conducted on 84 panoramic radiographs and lateral cephalometrics related to 10–15-year-old patients without
systematic diseases affecting dental calcification and development. Patient’s skeletal age was determined by the stage of cervical vertebrae development and by using Lamparski’s method. Dental age of samples was determined by Demirjian’s method. Findings were analyzed by SPSS 18 software using Spearman’s correlation test to determine the correlation between the cervical vertebrae development and the dental development stages. P < 0.05 was considered significant.
Results:
Spearman’s correlation test showed a significant direct correlation between dental age and skeletal age (r2 = 42.5%). The linear relationship between dental age and skeletal age was significant (p < 0.05). The highest correlation coefficient was between the cervical vertebrae development and the stages of mandibular second premolar calcification in girls (rs = 0.609) and in the second molar in boys (rs = 0.471). In Demirjian’s method, stage G of the mandibular second premolar teeth in girls and stage F of the mandibular second molar teeth in boys nearly coincided
with the pubertal growth spurt.
Conclusion:
The findings of this study showed that, in Demirjian’s method, stage G of the mandibular second premolar teeth in girls and stage F of the mandibular second molar teeth in boys was most frequent between developmental stages. According to the relatively high correlation coefficient between the dental age and the skeletal age, using dental calcification stages by panoramic radiography may become a simple first-level diagnostic test to determine skeletal maturity, which requires more studies in different ethnicities and places all around the world.
Tooth Calcification, Panoramic Radiography, Cervical Vertebrae, Age Determination by Skeleton
http://3dj.gums.ac.ir/article-1-227-en.html
http://3dj.gums.ac.ir/article-1-227-en.pdf
Journal of Dentomaxillofacial
5
2
2016
8
1
Identifying and Ranking the Factors Impacting the Utilization of Nanotechnology in Dentistry using the MCDM Fuzzy Approach
24
32
EN
Maryam
Morid Moshtagh Sefat
Faculty of Management and Accounting, Islamic Azad University, South Tehran, Tehran, Iran
Y
Kambiz
Jalali
Department of Management, Faculty of Management and Accounting, Islamic Azad University, South Tehran, Tehran, Iran
N
10.18869/acadpub.3dj.5.2.24
Introdouction:
One of the existing problems in the field of dentistry
is the use of utilizing materials. Utilizing
materials in dentistry must have high rigidity
and resistance and a beautiful appearance. The
weak formulation of dentistry materials causes
irritation, side effects, and increases the cost of
healthcare. Therefore, farms and organizations
related to dentistry care are trying to produce
highly efficient products. Therefore, in the current
research, we attempted to recognize and
rank the factors that impact on the utilization
of nanotechnology in dentistry by an MCDM
Fuzzy approach. The statistical community of
the present research includes dentists and university
experts, who are active in the field of Nano-
Dentistry in Mazandaran, Dentist College in
Sari . They are selected by the consensus of two
groups. The first group included managers and
superordinate experts of the organization with
32 people for localizing the modeling. In the second
group, five experts as the statistical sample
were selected.
Materials and methods:
The descriptive method and descriptive survey
were used. Therefore, by exploring the scientific
texts, the criteria were recognized, and their reliability
then proved by experts.
Results:
By using the screening (decimal-fuzzy), 21 factors
were recognized as important and effective
in the use of nanotechnology in dentistry. To determine
the impact and influence of these factors,
the DEMATEL technique was used.
Conclusion:
According to the results, decreasing dental
plaque had the most impact, and the cost of
technology was the most influential factor..
Nanotechnology, Nano-Dentistry, Multiple-Criteria Decision Analysis, DEMATEL Technics
http://3dj.gums.ac.ir/article-1-228-en.html
http://3dj.gums.ac.ir/article-1-228-en.pdf
Journal of Dentomaxillofacial
5
2
2016
8
1
Dentigerous Cyst Associated with a Deciduous Tooth: Report of a Case and Review of the Literature
33
37
FA
Najme
Anbiaee
Department of Oral and Maxillofacial Radiology, Maxillofacial Diseases Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
N
Maryam
Rajabi
Department of Oral and Maxillofacial Radiology, Maxillofacial Diseases Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
Y
Hamed
Ebrahimnejad
Department of Oral and Maxillofacial Radiology, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran.
N
10.18869/acadpub.3dj.5.2.33
Introdouction:
Dentigerous cyst is a benign developmental
lesion of the jaw. It is most commonly occurs
during the second and third decades of life and
has rarely been reported in association with a
deciduous tooth. We report a case of two-year
old girl who presented with an unerupted central
incisor. According to the radiographic findings,
she was diagnosed with a dentigerous cyst
and underwent surgical enucleation. The final
diagnosis was confirmed by histopathological
analysis. We briefly discussed the characteristics
of similar cases.
Incisor, Deciduous, Dentigerous Cyst
http://3dj.gums.ac.ir/article-1-229-en.html
http://3dj.gums.ac.ir/article-1-229-en.pdf
Journal of Dentomaxillofacial
5
2
2016
8
1
Evaluation of the Association of Sinus Mucosal Thickening with Dental and Periodontal Status Using Cone Beam Computed Tomographic Imaging
38
39
EN
Shoaleh
Shahidi
Biomaterials Research Center
N
Barbod
Zamiri
Oral & Maxillofacial Surgery Department,
N
Farin
kiany
Oral & Dental Disease Research Center
N
Roghayeh
Panahi
Oral & Maxillofacial Radiology Department, School of Dentistry
Y
10.18869/acadpub.3dj.5.2.38
Introdouction: Cone Beam Computed Tomography (CBCT) is a relatively new three-dimensional imaging technology, which has been widely used in dental and maxillofacial imaging.
Materials and methods: CBCT scans of 506 maxillary sinuses of 253 individuals (39.9% male and 60.1% female) were evaluated retrospectively for assessing the relationship between sinus mucosal thickening (MT) and dental and periodontal status. Thickening >1 mm was considered pathological and was categorized by degree (2 = 1–3 mm; 3 = 3–6 mm; 4 = 6–10 mm; 5 = more than 10 mm). The statistical analysis was performed to determine the association between MT of the sinus and the dental and periodontal status.
Results: MT was observed in 102 patients (40.3%; mean=7.01 ± 6.07mm), of which 13.7% were second degree, 25.5% were third degree, 25.5% were fourth degree, and 35.3% were fifth degree. Periodontal disease was seen in 168 patients
(66.3%), of whom 110 (65.5%) had mild disease, 44 (26.2%) had moderate disease, and 14 (8.3%) had severe disease. Ninety-seven patients (52.2%) who had MT were 2.84 times more likely to be have periodontal disease, and there was a statistically significant relationship between periodontal disease and sinus MT (P=0.001). Multivariate analysis revealed an odds ratio of 14.39 for MT in the patients with periodontal disease. Bivariate and multivariate statistical analyses; were used for the assessment of dental and periodontal status.
Conclusion: A retrospective inspection of CBCT images revealed that the prevalence of maxillary sinus MT was positively associated with periodontal disease, gender, and age. In addition, periodontal disease seems to be the most important
parameter influencing mucosal thickness.
Maxillary Sinus, Cone-Beam Computed Tomography, Periodontal Diseases.
http://3dj.gums.ac.ir/article-1-231-en.html
http://3dj.gums.ac.ir/article-1-231-en.pdf