Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
8
4
2007
12
01
Oral Ulcers in Patients Undergoing Chemotherapy; Clinical Characteristics and Their Relation with Herpes Simplex Virus Type I
1
12
41404
EN
M.
Hashemipour
Assistant Professor, Department of Oral Medicine, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran
M.
Rad
Assistant Professor, Department of Oral Medicine, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran
B.
Kalantari
Assistant Professor, Department of hematology, Kerman University of Medical Sciences, Kerman, Iran
M.
Ahmadinejad
Assistant Professor, Department of Genetics, Kerman University of Medical Sciences, Kerman, Iran
E.
Afsharipour
Dentist, Private Practice
M.
Pour Hosseinali
Nurse, Kerman Hospital, Kerman University of Medical Sciences, Kerman, Iran
N.
Maddahian
Nurse, Kerman Hospital, Kerman University of Medical Sciences, Kerman, Iran
Journal Article
2013
11
30
Statement of Problem: Several studies have shown that herpes simplex infection is the most prevalence etiologic factor for oral ulcers in patients under chemotherapy, and in leukemia.Purpose: The aim of this study was to investigate the clinical characteristics of oral ulcers and their relation with herpes simplex virus infection in patients undergoing chemotherapy.Materials and method: This descriptive and cross- sectional study was performed on patients receiving chemotherapy in Kerman hospital in 2006. Forty one patients (31 males and 10 females) with oral ulcers were studied. The most common type of cancer was acute lymphocytic leukemia diagnosed in 20 patients. Samples were prepared from ulcers by sterile swabs and were sent to laboratory for Polymerase Chain Reaction (PCR) procedure. The obtained data were analyzed by chi- square and t- test using SPSS 13.5 program.Results: In this study, of all patients with oral ulcers, 75.6% were men and 24.4% were women. The result of PCR test was positive in 28 cases (68.3%). Thirty patients (73.2%) had single oral ulcer and 11 cases (26.8%) were suffered from multiple ulcers. The most prevalence sites for the oral ulcers were tongue, buccal mucosa, and lip.Conclusion: It was concluded that the etiologic factor of oral ulcers in more than 50% of the patients under chemotherapy was herpes virus infection. Therefore, the antivirus treatment with prophylaxis should be performed for these patients. In addition, it must be considered that the clinical symptoms in diagnosis of this infection are not sufficient, and other tests such as PCR should be used.Key words: Oral ulcer, Herpes simplex virus, Chemotherapy
https://dentjods.sums.ac.ir/article_41404_c9887766303723187230fcd4832dd35f.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
8
4
2007
12
01
Effect of Two Mouth-rinses on the Surface Hardness of Two Types of Direct and Indirect Composites
13
22
41406
EN
F.
Sharaffedin
Assistant Professor, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
L.
Rahnama
Dentist, Private Practice
Journal Article
2013
11
30
Statement of problem: Mouth-rinses may soften composite restorations even when the composite is light cured or heat treated. The use of certain mouth-rinses may have less adverse effect on composite restorations.Purpose: The aim of this study was to evaluate the effect of alcoholic and non alcoholic mouth washes on the surface hardness of two types of direct (Z100) and indirect (Gradia) composites.Materials and method: Sixty disc shape samples of Gradia (n=30) and Z100 (n=30) composite were prepared and cured for 40 seconds by halogen light cure unit. Gradia composite specimens were post cured with labolight machine for 5 minutes and then were stored in distilled water for one week at 37c°. The samples were exposed to 3 different solutions of alcoholic, non-alcoholic mouth-rinses, and water for 24 hours at room tempreture. Surface hardness (VHN) was measured and data were analyzed by using One-way ANOVA and Scheffe tests (<0.05).Results: Statistical analysis revealed that, indirect composites which were kept in alcoholic, and non alcoholic solution showed less hardness than control group (water) (p=0.0001). Direct composite specimens which were kept in alcoholic mouthwash had less hardness than control group (p=0.003). Surface hardness of indirect composite specimens kept in alcoholic and nonalcoholic mouth-rinses was significantly higher than direct composites in these solutions (p=0.002 and p=0.008, respectively).Conclusion: Alcoholic and non alcoholic mouth-rinses caused reduction of surface hardness of direct and indirect composites and it seems that the effect of mouth-rinse on surface hardness of these composites is material dependent. Indirect composite showed to be harder than direct composite in all solutions.Key words: Mouth-rinses, Composites, Surface hardness
https://dentjods.sums.ac.ir/article_41406_9936ae08a20c0af19b4a1ee941046beb.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
8
4
2007
12
01
Evaluation of Enamel Surface Damage Following Use of Two Different Adhesive Resins and Debonding Pliers; a Stereomicroscopic Study
23
35
41407
EN
P.
Salehi
Associate Professor, Department of Orthodontics, School of Dentistry, Member of Orthodontic Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
HR.
Pakshir
Associate Professor, Department of Orthodontics, School of Dentistry, Member of Orthodontic Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
A.
Nourafshan
Associate Professor, Department of Anatomy, Shiraz University of Medical Sciences, Shiraz, Iran
N.
Naseri
Orthodontist, Private Practice
Journal Article
2013
11
30
Statement of problem: At the final stage of fixed orthodontic treatment, the debonding process has high potential in causing enamel damages especially enamel cracks. Thus, the investigation on the effective factors involves in the amount of enamel damages including the type of resin and the method used for debonding is necessary.Purpose: The aim of this study was to evaluate and compare the number of enamel cracks and changes in cracks length following bonding with two different adhesives, and debonding with two different pliers by stereomicroscope.Materials and method: In this interventionally in-vitro study, 120 extracted first premolars were randomly divided into four equal groups of 30. The metal brackets were bonded on the teeth with two pastes self-cure composite “Concise” in the first and second groups, and No-mix composite “Unite” in the third and fourth groups. the debonding was done by means of Lift off Debonding Instrument “LODI”, in the first and third groups, and Dentaurum Bracket Removing Plier, in the second and forth groups, respectively. Before bonding and after debonding, all teeth were evaluated with stereomicroscope for comparing the changes in the number and lengths of enamel cracks. Data were analyzed using Wilcakson and Mann Whitney tests using SPSS statistical package.Results: Statistically significant differences (p<0.001) in the number and length of enamel cracks after debonding were evident in all groups. The most increase in the number of new cracks was observed in the fourth group (p<0.05). The results indicated statistically significant difference (p<0.05) in increasing the total length of enamel cracks between group 4 and groups 1, 2.Conclusion: The debonding procedure is principally destructive to enamel surfaces. Applying shear-peel force using bracket removing plier with Unite adhesive (group 4), increased the enamel defects compared to other combination of adhesives and debonding pliers.Key words: Debonding, enamel crack, Bracket Removing Plier (Dentaurum), LODI, Unite, Concise
https://dentjods.sums.ac.ir/article_41407_e6e4da7e45fe7b383c40fe7cfbdca1a7.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
8
4
2007
12
01
Comparison of One versus Two Appointments Endodontic Therapy on Healing of Periapical Lesions in Dogs, Teeth
36
44
41408
EN
M.
Aminolzarian
Assistant Professor, Department of Endodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
M.
Razavi
Assistant Professor, Department of Pathology, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
L.
Ebrahimi
Assistant Professor, Department of Endodontics, School of Dentistry, Khorasgan University of Medical Sciences, Isfahan, Iran
Journal Article
2013
11
30
Statement of Problems: Apical periodontitis is caused by bacteria within root canals. Logically, the treatment of apical periodontitis should be directed to the removal of the cause, i.e bacterial eradication. The best procedure for disinfection is canal debridement and irrigation during the first appointment, followed by the application of calcium hydroxide dressing for one week. MTAD, a Mixture of Tetracycline isomer, Acid and Detergent is a new antibacterial solution which has been claimed to be useful in one visit treatment.Purpose: The purpose of this study was to compare healing of periapical lesions after one visit treatment using MTAD with two appointments endodontic therapy by calcium hydroxide in dogs teeth.Materials and method: Forty incisor and first premolars of four dogs were left open for four months until periapical lesions developed. Twenty root canals were treated endodontically using MTAD in one visit, and the other 20 canals were dressed with calcium hydroxide for 1 week, and endodontic treatments were then completed. Six months after treatment the dogs were killed by vital perfusion. After fixation, the teeth were histologically examined for the healing of periapical lesions. Kruskal-wallis and Mann-Whitney tests were used for statistical analysis.Results: The percentage of healing , advanced organization , organization , and acute inflammation for MTAD group were 31.6%, 26.3%, 36.8%, and 5.3%, while for calcium hydroxide group they were 16.7%, 16.7, 55.6%, and 11.1% respectively. The difference between the two groups was not statistically significant (p>0.05), but healing of lesions progressed better in MTAD group.Conclusion: One-visit treatment by use of MTAD for pulpless teeth with periapical lesion is an acceptable alternative therapy to two-visit treatment using calcium hydroxide.Key words: Healing, Apical lesion, One and two appointment therapy, MTAD, Calcium hydroxide
https://dentjods.sums.ac.ir/article_41408_23b6040204c2db4cfcabf82392031dcf.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
8
4
2007
12
01
In Vitro Comparison of Load Activation Rate of a Designed Screw with Other Common Expansion Screws
45
53
41409
EN
M.
Oshagh
Assistant Professor, Department of Orthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
Sh.
Momeni Danaei
Associate Professor, Department of Orthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
MR.
Hematian
Assistant Professor of Mechanical Engineering, Department of Mechanical Engineering, Shiraz University, Shiraz, Iran
MR.
Oshagh
M.Sc. Student of Theorical Physics, Tarbiat Modares University, Tehran, Iran.
A.
Hadiun Zade
M.Sc. Student of Mechanic Engineering , Shiraz University, Shiraz, Iran
AA.
Saboori
Prosthodontics Resident, Department of Prosthodontics, Mashhad University of Medical Sciences, Mashhad, Iran
Journal Article
2013
11
30
Statement of problem: Expansion screws such as Hyrax and Hass have high load-activation rate and their force system is somehow far from ideal for moving teeth. Hence, activation of such screws produces heavy forces that decay rapidly. Also, rapid reactivation of the appliance has the potential of damaging the teeth and periodontium. Moreover, lack of patientۥs cooperation in activation of screw could be considered as one of its main disadvantages.Purpose: The purpose of this investigation was to assess and compare the force- activation curve of a designed screw with those of the commonly used expansion screws.Materials and method: In this experimental study, a screw was designed and manufactured in similar size as the other screws with the potential of 8 millimeter expansion in 2 times activation. The screw was embedded in acrylic material in a removable appliance and fixed on its plaster cast. The compression test machine was used to depict its load-activation curve. The curve was compared with other screws' curves.Results: The results of this study showed that the designed screw had a lower load-deflection rate than other screws. It generated a light continuous force of 2- 3.5 pounds for 4 millimeter expansion.Conclusion: Compared with other screws which produce heavy and interrupted forces, the designed screw generated a light continuous force.Key words: Expansion, Screw, Load- Activation rates
https://dentjods.sums.ac.ir/article_41409_70228fede2b5ed66b626ee3cbd237752.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
8
4
2007
12
01
Effect of Herbal and Chemical Mouth-rinses on Periodontal Indices; Comparison of Matrica, Persica and Chlorhexidine
54
60
41410
EN
M.
Chitsazi
Associate Professor, Department of Periodontics, School of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
A.
Shirmohammadi
Assistant Professor, Department of Periodontics, School of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
E.
Balayi
Dentist, Department of Community Dentistry, School of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
Journal Article
2013
11
30
Statement of Problem: Due to the limitations of mechanical plaque control methods, the use of chemical methods have been recommended, and Chlorhexidine has been shown to be the gold standard mouth-rinse.Purpose: The aim of this study was to compare the effect of two herbal mouth-rinses with each other, and with Chlorhexidine on some periodontal indices.Materials and method: In this double-blinded interventional study, 30 male dental students were divided into three equal groups. Before and after using of the two herbal and one chemical mouth-rinses (Matrica, Persica, and Chlorhexidine) periodontal indices including plaque, gingival, and tooth staining were measured and recorded. All samples consumed the three mouth-rinses in two week intervals. Data were analyzed using Wilcoxon test for evaluation of dependent variables in each group, and ANOVA for dependent variables between the three mouth-rinses.Results: The three mouth-rinses used in this study (Matrica, Persica, and Chlorhexidine) caused reduction in plaque index by 30.589.22%, 19.448.43% and 19.628.7%, respectively. All the mouth-rinses decreased the plaque index but the reduction was more prominent with Chlorhexidine (p<0.05). Also, Chlorhexidine caused more gingival index reduction in comparison with Matrica and Persica (p<0.05). Herbal mouth-rinses caused small areas of staining but Chlorhexidine increased stain index value by its extension and intensity. The difference between the two herbal mouth-rinses was not statistically significant, while the difference was significant in comparison with the chemical mouth-rinse (p<0.05).Conclusion: As the extension and intensity of staining caused by Chlorhexidin as a chemical agent was significantly more than the herbal mouth-rinses, also its effect on plaque and gingival indices was more. So, the benefits and side effects of each mouth-rinse should be considered in their clinical application.Key words: Herbal mouth-rinse, Chemical mouth-rinse, Periodontal indices
https://dentjods.sums.ac.ir/article_41410_204f5fb28808917ea813f7d7b4769985.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
8
4
2007
12
01
Effect of Oral Contraceptive Pill on the Amount of Unstimulated Saliva in Females
61
65
41411
EN
A.
Azizi
Assistant Professor, Department of Oral Medicine, School of Dentistry, Ahwaz University of Medical Sciences, Ahwaz, Iran
Sh.
Lawaf
Assistant Professor, Department of Prosthodontics, School of Dentistry, Ahwaz University of Medical Sciences, Ahwaz, Iran
E.
Mohamadi
Dentist, Private Practice
Journal Article
2013
11
30
Statement of Problem: Salivary glands secrete a liquid known as saliva which plays an important role in oral homeostasis. Quantitative and qualitative variation in salivary secretion can cause dental caries and periodontal disease. The decrease of saliva may be caused by some diseases and drugs such as sjogren syndrome, and antidepressant drugs.Purpose: The purpose of this study was to evaluate the effects of oral contraceptive pills on the volume of unstimulated saliva in healthy women.Materials and method: In this experimental study, 85 healthy females including 35 study cases and 50 controls with the mean age of 18-25 years, referred to Ahwaz dental school, were selected. The study group had been taking oral contraceptive pill for at least 6 months, but the control group had not been taking this kind of drugs. Subjects with no past medical history, no use of medications, and no history of depression were selected as study subjects. The 2 minutes amount of collected saliva of the subjects in both groups was measured and recorded. The results were analyzed using T-test.Results: The mean age of the study and control group was 24.42 and 24.78 years, respectively. The mean unstimulated volume of the saliva in the study group was 1.11 ml/2minute, while in the control group it was 1.53 ml/2minute. There was a significant difference in the amount of salivary secretion between the two groups (p<0.001).Conclusion: According to this study, it can be concluded that, use of oral contraceptive pills can cause reduction in unstimulated salivary secretion. Therefore, good oral and dental hygiene instructions should be emphasized for these patients.Key words: Saliva, Oral contraceptive pill, Females
https://dentjods.sums.ac.ir/article_41411_62887bbad5bc1f60c6a5296403e48cf7.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
8
4
2007
12
01
Mandibular Incisive Canal in Panoramic View
66
75
41412
EN
Sh.
Shahidi
Assistant Professor, Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
B.
Zamiri
Assistant Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
Sh.
Roosta
Assistant Professor, Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
A.
Haghnegahdar
Assistant Professor, Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
Journal Article
2013
11
30
Statement of problem: One of the anatomic structures in mental interforaminal area is mandibular incisive canal (MIC). Due to the lack of sufficient emphasis in anatomic texts and limited ability of conventional radiographies to depict it, this structure is not fully recognized or considered by dentists in planning treatment. Ignorance of this canal can lead to post-surgical complications in this region.Purpose: The aim of this study was the assessment of radiographic appearance of mandibular incisive canal in panoramic view.Materials and method: In this cross-sectional study, 2324 panoramic views of patients (1117 males, 1207 females) with the mean age of 18 to 70 years were inspected for presence of MIC. Digital photographies were obtained from those radiographic views containing MIC. Then panoramic views with good visible MIC were selected in the study. A data sheet containing age, sex, visibility, extension of the canal in each side, and distance between MIC and inferior border of mandible was completed. An approximate course of MIC was determined and drawn. Chi-square test and SPSS- 11.5 software were used to analyze the data.Results: In 883 cases (38%) of panoramic radiographies, MIC was visible, and 277 of them (11.9%) displayed MIC with good visibility. In 19% of cases MIC was detected in right side, and in 14% of cases it was detected in left side. In rest of the cases (67%) canals were visible on both sides. Based on Chi-square test, good visibility of the canals in men was significantly more than in women. Conclusion: Because less than 50% of panoramic views with good quality and standard protocol could depict incisive canal of the lower jaw, use of other more reliable methods such as C.T or tomography should be recommended in case of necessity.Key words: Mandibular incisive canal, good visibility, Panoramic view
https://dentjods.sums.ac.ir/article_41412_f7b6fcc0f7e29346a335235f8b6f11ad.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
8
4
2007
12
01
Sialochemistry of Parotid, and Assessment of Dental Caries Rate and Gingivitis in Patients with Major Thalassemia
76
81
41413
EN
H.
Abdolsamadi
Assistant Professor, Department of Oral Medicine, School of Dentistry, Hamadan University of Medical Sciences, Hamedan, Iran
P.
Torkzaban
Assistant Professor, Department of Periodontics, School of Dentistry, Hamadan University of Medical Sciences, Hamedan, Iran
M.
Hosseini
Specialist in Oral Medicine, Private Practice
Journal Article
2013
11
30
Statement of Problem: Systemic consequences of major thalassemia (MT), can induce some changes in saliva chemistry, and increase dental caries, as well as gingivitis in patients.Purpose: The aim of this study was to compare the sialochemistry of saliva, state of dental caries, and gingivitis in MT patients with healthy individuals.Materials and method: In this historical cohort study, 28 MT patients (9 girls and 19 boys) with the mean age of 11/75 years, and 60 healthy individuals (20 girls and 40 boys)with the mean age of 11/36 years as a control group were examined from DMF and GI index point of view. After stimulation of parotid gland, secretions were collected from both groups. The saliva samples were tested for calcium, phosphor, potassium, sodium, and urea. Data were analyzed by SPSS version 13 using Mann-Whitney and t-test.Results: Dental caries and gingivitis were shown to be higher in MT patients compared to the control group (p<0.001). Also results from sialochemistry of parotid showed that, the mean calcium and phosphor saliva concentrations were significantly higher in patients with MT than in the control group (p<0.001). However, the mean urea and sodium concentrations in saliva were significantly lower in the control group (p=0.009, p=0.035). The potassium content in patients' saliva did not have a significant difference with the control group (p=0.34).Conclusion: The result of this study showed that dental caries, gingivitis, and mean saliva concentration of calcium and phosphor was higher in MT patients than the control group but sodium and urea in the healthy group was higher. Concentration of potassium did not show any difference between the two groups.Key words: Gingivitis, Dental caries, Major thalassemia, Sialochemistry, Parotid gland
https://dentjods.sums.ac.ir/article_41413_2cd7ce9082d60f64bd4ade6df231eb0b.pdf
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
8
4
2007
12
01
An up to Seven Years Follow-up of a Telescopic Implant-Supported Fixed Partial Denture
82
88
41405
EN
K.
Torabi
Assistant Professor, Department of Prosthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
Journal Article
2013
11
30
In this article, a telescopic implant- supported fix partial denture, and its seven years follow-up is reported. A 42 years old lady with edentulous free end space in the right quadrant of her lower jaw was refferd for construction of implant supported prosthesis. After implant insertion and osseointegration, the implants showed severe mesiodistal and buccolingual tiltation in the manner that might not be corrected by extensive preparation or using angled abutments. Telescopic copings were made to correct the angulation of the abutments and the path of insertion in order to allowed the construction of a suitable prosthesis. The prosthesis is functional and healthy after seven years follow-up.Key words: Telestcopic, Implant, Fix prosthesis
https://dentjods.sums.ac.ir/article_41405_060d63a624111995e7a075f3f98aacea.pdf