Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
2345-6418
15
3
2014
09
01
A Clinical, Histopathological and Immunohistochemical Approach to the Bewildering Diagnosis of Keratoacanthoma
91
97
EN
Massoumeh
Zargaran
0000-0002-8843-2590
Dental Research Center and Dept. of Oral and Maxillofacial Pathology, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran.
massoumehzargaran@gmail.com
Fahimeh
Baghaei
Dept. of Oral and Maxillofacial Pathology, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran.
s_shojaei_umsha@yahoo.com
Keratoacanthoma (KA) is a comparatively common low-grade tumor that initiates in the pilo-sebaceous glands and pathologically mimics squamous cell carcinoma (SCC). Essentially, strong debates confirm classifying keratoacanthoma as a variant of invasive SCC. The clinical behavior of KA is hardly predictable and the differential diagnosis of keratoacanthoma and other conditions with keratoacanthoma-like pseudocarcinomatous epithelial hyperplasia is challenging, both clinically and histopathologically. This article aims to illustrate and explicate some of these complicated issues by presenting two cases of KA and a relevant review of literature. It also targets the clinical, histopathologic, and immuno-histochemical features of these two cases.Both presented lesions of this study had appeared on the vermilion border of the lower lip and no vascular or perineural invasion was observed. The results of the immuno-histochemical survey, particularly in staining with marker CD30, confirmed the differential diagnosis of keratoacanthoma from keratoacanthoma-like pseudocarcinomatous proliferations which was consequent to the CD30+ lymphoid infiltration.Histopathological and immunohistochemical investigation is necessary to disprove the invasive biologic behavior of keratoacanthoma and also to refute all conditions with keratoacanthoma-like pseudocarcinomatous epithelial hyperplasia.Key Words: Immunohistochemistry; Keratoacanthoma; KA; CD30
https://dentjods.sums.ac.ir/article_41596.html
https://dentjods.sums.ac.ir/article_41596_e07b38aad1fdd3538cbb0871c33549d4.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
2345-6418
15
3
2014
09
01
The Effect of Disinfection with Sodium Hypochlorite 0.5% on Dimensional Stability of Condensation Silicone Impression Materials of Speedex and Irasil
98
103
EN
Mohammad Hasan
Kalantari
Dept. of Prosthesis, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
ameneh1014emami@gmail.com
Afsaneh
Malekzadeh
Dentist
Ameneh
Emami
Periodontist
Statement of the Problem: Impression materials are concerned as a significant source of cross-contamination because of exposure to blood and saliva.Purpose: Considering the importance of infection control in the dental environments, this study is performed to investigate the dimensional changes of two condensation silicone impression materials, Speedex and Irasil, after immersion in 0.5% sodium hypochlorite.Materials and Method: In this in-vitro study, two condensation silicone impression materials, Speedex and Irasil, were used on a prefabricated metal model having two dies, one with and the other without undercut. Each impression material was used to prepare 30 impressions; half of each group was immersed in 0.5% sodium hypochlorite for 20 min. The casts were prepared and a profile projector was used to measure the casts in terms of height and diameter of the die without undercut, distance between the two dies, die diameter below the undercut, and the height of the die above the undercut. The results were statistically analyzed using Student t-test.Results: In Speedex group, an increase was detected in the height of die without undercut and the height of the die above the undercut, but other dimensions have decreased. No significant change was observed in dimensions of Speedex group except for the distance between the two dies and die height above the undercut. In Irasil group, the height of the die without undercut, the distance between the two dies and the height of the die above the undercut have increased; while decrease was observed in other dimensions. Compared with the original sample, no significant difference was observed in dimensions except for the height of the die above the undercut.Conclusion: These changes for Speedex group include changes in distance between the two dies and the height above the undercut which can impede proper placement of prosthesis, particularly fixed partial dentures in which the accuracy of the distance between the two dies are of utmost importance. In Irasil group, the height of above the undercut was altered and this negative effect is highlighted in registering the reduced single tooth with an undercut.Key Words: Sodium hypochlorite; Condensation silicone; Disinfection; Dimensional changes
https://dentjods.sums.ac.ir/article_41597.html
https://dentjods.sums.ac.ir/article_41597_50caade38f544d4ce8796f20bae24bed.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
2345-6418
15
3
2014
09
01
Evaluation of Histological Impacts of Three Types of Orthodontic Fixed Retainers on Periodontium of Rabbits
104
111
EN
Morteza
Oshagh
Orthodontist, Private Practice, Tehran, Iran.
morteza_oshagh@yahoo.com
Somayeh
Heidary
Orthodontist, Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran., Dept. of Orthodontics, School of Dentistry, Bushehr University of Medical Sciences, Bushehr, Iran.
Ali
Dehghani Nazhvani
0000-0002-9472-8793
Dept. of Oral & Maxillofacial Pathology, Biomaterial Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
alidehghaninazhvani@yahoo.com
Fatemeh
Koohpeima
Dept. of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
koohpeima.f@gmail.com
Omid
Koohi Hosseinabadi
0000-0001-9214-4375
Stem cell and Transgenic Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
Statement of the Problem: Fixed retainers were developed to maintain incisor alignments after orthodontic treatments. Although the effects of fixed retainers on periodontal health are clinically studied, no studies have still evaluated the histological changes in the periodontium after the placement of thefixed retainers.Purpose: The aim of this study was to evaluate the effects of customised retainers on periodontium histologically.Materials and Method: Forty pairs of maxillary and mandibular central incisors of twenty rabbits were randomly divided into four equal groups: The first group was considered as the control and in the second group, Fiber Reinforced Composite (FRC), in the third group, 0.014 inch stainless steel (SS) wire and in the fourth group, 0.175 inch multistrand stainless steel (MSS) wire were bonded on the labial surfaces of the incisors. After sixty days; animals' periodontium were evaluated histologically.Results: The number of bone resorption lacuna in the control group was significantly less than FRC and 0.014 SS groups. The periodontal vessel count and their diameter in the control group was significantly lower than the other groups. The pulp vessel count and their diameter in controls were significantly more than the 0.014 SS and the 0.175 MSS groups.Conclusion: Findings of this study suggest that FRC fixed retainer might cause detrimental effects on the periodontal ligaments and supporting bone and the 0.014- inch and 0.175- inch fixed retainers can cause hyalinization and possibly the necrosis of the pulp.Key Words: Fixed orthodontic retainers; Periodontium; Histology; Rabbits
https://dentjods.sums.ac.ir/article_41599.html
https://dentjods.sums.ac.ir/article_41599_932b9266f27a70541f2f1cc6fc848514.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
2345-6418
15
3
2014
09
01
Herpes Zoster Induced Osteomyelitis in the Immunocompromised Patients: A 10-year Multicenter Study
112
116
EN
Reza
Tabrizi
0000-0001-7204-7746
Dept. of Craniomaxillofacial Surgery, School of Dentistry, Shiraz University of Medical Science, Shiraz, Iran.
tabmed@gmail.com
Ali
Dehghani Nazhvani
0000-0002-9472-8793
Dept. of Oral and Maxillofacial Pathology, School of Dentistry, Shiraz University of Medical Science, Shiraz, Iran.
alidehghaninazhvani@yahoo.com
Amir
Vahedi
Dept. of Pathology, Tabriz University of Medical Science,Tabriz, Iran.
Mehdi
Gholami
Dept. of Maxillofacial Surgery, Mashhad University of Medical Science, Mashhad, Iran.
gholami42143@yahoo.com
Raziyeh
Zare
Postgraduate Student of Oral and Maxillofacial Pathology, Shiraz University of Medical Science, Shiraz, Iran.
Raha
Etemadi Parsa
Postgraduate Student of Oral and Maxillofacial Pathology, Shiraz University of Medical Science, Shiraz, Iran.
Statement of the Problem: Alveolar bone necrosis induced by Herpes zoster infection is considered as a rare manifestation of osteomyelitis and few case reports are presented in the literature.Purpose: The aim of this study was to evaluate mandibular osteomyelitis caused by herpes zoster in the immunocompromised patients with histopathologically documented osteomyelitis in the mandible and herpes zoster infection.Materials and Method: 30 patients were recruited in this cross-sectional study. 19 patients were completely edentulous, 4 patients were partially edentulous and 7 with complete dentition. In all cases, specimens were analyzed using a conventional polymerase chain reaction (PCR) test for varicella zoster virus. Results: 16 patients underwent dialysis, 9 patients received chemotherapy treatments and 5 patients had transplantation (four kidneys and one liver). Histopathological assessment demonstrated a nonspecific bone necrosis exhibiting an eosinophilic, homogeneous non-vital bone tissue with peripheral resorption surrounded by reactive connective tissue. PCR test was positive in 21 cases.Conclusion: This study demonstrated that the frequency of osteomyelitis induced by herpes zoster could be more than the records provided by previous studies. Histopathological findings might be nonspecific in such patients. PCR test was not positive for all HZ induced osteomyelitis patients.Key Words: Zona; Osteomyelitis; Mandible; Herpes zoster
https://dentjods.sums.ac.ir/article_41600.html
https://dentjods.sums.ac.ir/article_41600_15c0a5c310c7f4b6d1758a7596b9c856.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
2345-6418
15
3
2014
09
01
Translucency and Masking Ability of Various Composite Resins at Different Thicknesses
117
122
EN
Farideh
Darabi
0000_0001_8696_6698
Oromaxillofacial Developmental Disease Research Center, Dept. of Operative Dentistry, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.
f_darabi2002@yahoo.com
Golpar
Radafshar
0000-0003-3242-605X
Oromaxillofacial Developmental Disease Research Center, Dept. of Periodontology, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.
golishad@gmail.com
Maryam
Tavangar
0000_0003_3711_3597
Oromaxillofacial Developmental Disease Research Center, Dept. of Operative Dentistry, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.
reza_davalloo@yahoo.com
Reza
Davaloo
Oromaxillofacial Developmental Disease Research Center, Dept. of Operative Dentistry, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.
Aref
Khosravian
Dentist, Private Practice, Tehran, Iran.
Nastaran
Mirfarhadi
MS in Nursing Education, Oromaxillofacial Developmental Disease Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.
mirfarhadin@gmail.com
Statement of the Problem: Optical properties of the composite resins, concerning their translucency and thickness, are affected by discolored tooth structure or inherent darkness of the oral cavity.Purpose: This study aimed to compare the translucency parameter (TP) of five different composite resins in different thicknesses and to evaluate their masking ability in black backgrounds.Materials and Method: Five brands of composite resins; Gradia (GC) and Crystalline (Confi-dental) in opaque A2 (OA2), Vit-l-escence (Ultradent) in opaque snow (OS), Herculite XRV (Kerr) and Opallis (FGM) in dentin A2 (DA2) shades were selected to enroll the study. Color coordinates of each composite were determined at 0.5, 1, and 1.5 mm thicknesses on a white backing. The backing of material itself and a black backing were calculated by using a spectrophotometer to evaluate the translucency parameter (TP) of the study materials. The masking ability was also calculated from the specimens on the material itself and on black backing. The values under 2 were estimated as imperceptible. One-way ANOVA, T-test and Tukey HSD were employed for statistical analysis.Results: The masking ability values, recorded for the 1.5 mm-thick specimens, were in the range of imperceptible except for the Herculite. There was no difference in TP values of the materials at 1.5 mm thickness. Opaque snow shade of Vit-l-escence and opaque A2 shade of Gradia showed lower TP values in comparison with the other 1 and 0.5 mm-thick materials and this difference was statistically significant (p< 0.05).Conclusion: In relatively thin thicknesses (≤1mm), these opaque/dentin shade composite resins could not mask the black background color.Key Words: Translucency; Composite resins; Masking; Thickness
https://dentjods.sums.ac.ir/article_41601.html
https://dentjods.sums.ac.ir/article_41601_1028ba076ddb6a6d52fdc3da20eaba46.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
2345-6418
15
3
2014
09
01
Effect of Oral Midazolam Premedication on Children’s Co-operation Before General Anesthesia in Pediatric Dentistry
123
128
EN
Nasser
Kaviani
0000-0002-7483-8864
MS. Anesthesiologist, Dept. of Oral and Maxillofacial Surgery, Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
kaviani@dnt.mui.ac.ir
Mina
Shahtusi
Postgraduate Student of Pediatrics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
m.shahtusi@gmail.com
Maryam
Haj Norousali Tehrani
Dept. of Pediatric Dentistry, Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Sara
Nazari
Dentist, Isfahan, Iran
Statement of the Problem: Premedication is expedient in reducing the psychological trauma from recalling the unpleasant pre-anesthetic phases, hence, inducing a trouble-free anesthesia.Purpose: This study aimed to determine the effectiveness of oral midazolam in co-operation of the subjects before general anesthesia and in recalling the pre-anesthetic phases, performed on children candidate for dental treatment under general anesthesia.Materials and Method: In this prospective clinical trial study, 62 healthy non-cooperative children, candidate for dental treatment under general anesthesia, were randomly divided into study and control groups. The children received 20ml orange juice, 20 minutes before starting the anesthesia. The juice of the test group contained 0.5mg/kg of midazolam and that of the control group included no medication. The induction and the maintenance process of anesthesia were similar in both groups. The manner of subjects when separated from parents, their cooperation during intravenous catheterization, and recalling the pre-anesthetic events were recorded. Data were analyzed by adopting chi-square and Mann-Whitney tests.Results: Most of the children in the test group had a comfortable separation from parents, restful IV catheterization and 90% of the subjects did not recall the pre-anesthetic events.Conclusion: Under the circumstances of this study, it could be concluded that 0.5mg/kg oral midazolam premedication is effective for comfortable separation of children from parents and restful IV catheterization and also forgetting the pre-anesthetic events.Key Words: General anesthesia; Midazolam; Pediatric dentistry; Premedication
https://dentjods.sums.ac.ir/article_41602.html
https://dentjods.sums.ac.ir/article_41602_a4ac214183741f45cf4c495f388e2ba5.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
2345-6418
15
3
2014
09
01
The Public Attitude Towards Selecting Dental Health Centers
129
134
EN
Vahid
Moshkelgosha
Orthodontics Research Center and Dept. of Orthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
vahid.moshkelgosha@gmail.com
Mehrdad
Mehrzadi
Students’ Research Committee, School of Dentistry, International Branch, Shiraz University of Medical Sciences, Shiraz, Iran.
Ali
Golkari
Dept. of Dental Public Health, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
golkaria@sums.ac.ir
Statement of the Problem: No published literature was found studying the people's reasons on why to choose or not to choose a dental care setting in south Iran, while understanding their attitude towards choosing their dental care center is consequential for planning a successful oral health care service system. Purpose: To determine the factors affecting how people of the city of Shiraz choose their dental health services.Materials and Method: A cross-sectional analytic study was designed. A self-administered questionnaire was produced, tested and then distributed among 570 multistage randomly selected parents of schoolchildren of the city of Shiraz. Independent t-test, paired t-test and Spearman correlation were used to analyze the factors influencing participants in choosing clinics for their esthetic and non-esthetic dental treatments.Results: 400 questionnaires were complete and analyzed. The recommendation from others was found to be the most encouraging factor to choose a dentist or a dental clinic. More importance was reported for various factors affecting participants' choice of dental clinic when seeking non-esthetic treatments, while recommendation and reputation of dentist/dental clinic played a vital role in esthetic treatments. The cost was more important for respondents living in more deprived districts (p= 0.05), for unemployed group (p< 0.001) and for those with less education (p< 0.001).Conclusion: Factors affecting people's choice for dental care proved to be highly complicated. Recommendation was found playing an important role. Dental patients consider various factors when looking for non-esthetic treatment but would go for the best possible when seeking esthetic treatments. Findings of this study indicate that patients’ choice and utilization of dental service can be improved if dental clinics provide high quality of dental care with reasonable fees.Key Words: Dentists; Oral health; Health services; Attitude to health
https://dentjods.sums.ac.ir/article_41603.html
https://dentjods.sums.ac.ir/article_41603_8492e65b565cecff478a9a598212484f.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
2345-6418
15
3
2014
09
01
Comparison of the Changes in Blood Glucose Level During Sedation with Midazolam and Propofol in Implant Surgery: A Prospective Randomized Clinical Trial
135
139
EN
Nasser
Kaviani
0000-0002-7483-8864
Dept. of Anesthesiology, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
kaviani@dnt.mui.ac.ir
Farzad
Koosha
Student, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
f.koosha@yahoo.com
Mina
Shahtusi
Postgraduate Student of Pediatrics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
m.shahtusi@gmail.com
Statement of the Problem: Reducing the patients' stress can prevent, or at least, limit the increase in blood glucose level.Purpose: The study compares the effect of propofol and midazolam on blood glucose level in the patients undergoing dental implant surgery. The effect of pre-operational stress on blood glucose level during the surgery is also evaluated.Materials and Method: This prospective randomized clinical trial recruited 33 patients undergoing dental implant surgery and divided into two groups. Conscious sedation was performed by midazolam in one group and with propofol in another group. The pre-operational stress was scored and the blood glucose level was measured in 4 different stages; before the operation, two minutes after the local anesthetic injection; thirty minutes after the onset of operation and at the end of the operation. The results were analyzed by employing ANOVA and Pearson test. The p Value was adopted 0.05 and the confidence coefficient was assumed 95%.Results: The average levels of the blood glucose in midazolam and propofol group were 93.82 mg/dl and 94 mg/dl before the operation which displayed a meaningful increase of blood glucose level in both groups as the operation went on. The values were 103.76 mg/dl for midazolam and 108.56 mg/dl for the propofol group (p< 0.05) at the end of the operation.No statistically significant difference was found in the average blood glucose level between two groups in the different stages of the operation (p= 0.466). The Pearson correlation coefficient test revealed a higher increase in the blood glucose level in the patients with a higher pre-operational stress score (r= 0.756, p< 0.001).Conclusion: Based on the results yielded by this study, patients who receive venous sedation, either by midazolam or propofol, experience increase in the blood glucose level while undergoing an operation. No statistically significant difference was detected between midazolam and propofol.
https://dentjods.sums.ac.ir/article_41604.html
https://dentjods.sums.ac.ir/article_41604_72baea200c075802c64977c3ffadb003.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
2345-6418
15
3
2014
09
01
Treatments’ Outcomes of Patients Suffered from Trigeminal Neuralgia in Kerman, Iran
140
146
EN
Javad
Faryabi
Dept. of Oral & Maxillofacial Surgery, School of Dentistry, Member of Oral and Dental Diseases Research Center, Kerman University of Medical Sciences, Kerman, Iran.
jfr@kmu.ac.ir
Maryam
Joolhar
General Dentist, Private Practice, Tehran, Iran.
Statement of the Problem: Trigeminal neuralgia (TN) presents with a shooting pain in maxillofacial region which compels the involved patients to visit many medical and dental physicians to relieve the pain. Hence, assessing the outcomes of different treatment modalities may help the patients and their clinicians choose a suitable practical method of treatment. Purpose: The study was aimed to evaluate the outcomes of different treatments of TN and to determine which surgical or non-surgical treatment is better for controlling the pain.Materials and Method: This study included 42 patients with trigeminal neuralgia. A questionnaire was completed for each patient in order to evaluate the pain control status of patients’ treatment with non-surgical (pharmaceutical) and surgical modalities. The questionnaire consisted of questions on an datasheet , concerning the duration of involvement with the condition, type and dose of the medication(s) used, the surgical technique administrated, patient satisfaction with the treatment modality and the intensity and frequency of the pain if present. The purpose of the study and the necessary information regarding the questions of the data sheet was given in detail to the patients for a careful completion of the questionnaires. Data was analyzed by adopting t-test using SPSS software.Results: The results showed that the patients treated with pharmaceutical modalities had relatively lower improvement rate than those treated with surgery combined with medication (p< 0.035). Carbamazepine was the most consumed medication for pain control and the microvascular decompression was the most performed surgical method in patients.Conclusion: Although medication therapy alone was less effective than surgery combined with medication, both treatment modalities were significantly effective in controlling the pain of patients.Key Words: Trigeminal neuralgia; Drug therapy; Microvascular decompression
https://dentjods.sums.ac.ir/article_41605.html
https://dentjods.sums.ac.ir/article_41605_223bd71363cbf380948e4cc6efeddb42.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
2345-6418
15
3
2014
09
01
Epidermolysis Bullosa, Dental and Anesthetic Management: A Case Report
147
152
EN
Katayoun
Esfahanizade
0000000242378031
Dept. of Pediatric Dentistry, Islamic Azad University, Dental Branch, Tehran, Iran.
masfalnegh@sbmu.ac.ir
Ali Reza
Mahdavi
Mofid’s Children Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Ghassem
Ansari
0000-0001-6213-2293
Dept. of Pediatric Dentistry, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
profgansari@gmail.com
Masoud
Fallahinejad Ghajari
Dept. of Pediatric Dentistry, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Abdolreza
Esfahanizadeh
Instructor of Child Neurology and Neurodevelopmental Disabilities. UMDNJ/ Robert Wood Johnson Medical School, NJ, USA.
Epidermolysis bullosa (EB) is a group of rare inherited skin and mucous membrane disorders in which blister formation may arise spontaneously or following a minor friction. Various patterns of inheritance are explicated for the disease. The disease has a profound effect on oral mucosa and may result in high prevalence of dental caries. General anesthesia is sometimes the only choice for dental treatments in patients with EB. The following case report describes the dental and anesthetic management of an 12.5 -year-old girl with dystrophic type of EB. The patient was followed up every 6 months. New carious lesions were detected one year after the treatment, on the last visit. Presenting a perfect dental care to children with this disorder can be challenging for the in charge specialist, both pediatric dentist and anesthesiologist.
https://dentjods.sums.ac.ir/article_41598.html
https://dentjods.sums.ac.ir/article_41598_005f222e87b532822cfa39cabba6e6c4.pdf