Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
Effect of Preheating and Precooling on the Flexural Strength and Modulus of Elasticity of Nanohybrid and Silorane-based Composite
224
229
43542
EN
Farahnaz
Sharafeddin
Biomaterial Research Center, Dept. of Operative Dentistry, School of Dentistry, Shiraz University of Medical Science, Shiraz, Iran.
0000-0003-2547-079X
Mehran
Motamedi
Dept. of Operative Dentistry, School of Dentistry, Shiraz University of Medical Science, Shiraz, Iran.
Zahra
Fattah
Post Graduate Student, Student Research Committee, Dept. of Operative Dentistry, School of Dentistry, Shiraz University of Medical Science, Shiraz, Iran.
Journal Article
2014
05
10
Statement of the Problem: Composite resin may be used in different temperatures; it is crucial to determine the effect of temperature on mechanical properties of nanohybrid and silorane-based composite.Purpose: This in vitro study compared the flexural strength and modulus of elasticity of nanohybrid and silorane-based resin composite, at 4˚C, room temperature (25˚C), and 45˚C.Materials and Method: In this experimental study, 60 specimens were prepared in a metal split mold (2×2×25mm). Two different resin composites, Filtek Z250 XT (3M/ ESPE) and Filtek P90 (3M/ESPE), were evaluated. The material were inserted into split molds at room temperature, 4˚C or 45˚C and cured with LED (1200 mW/cm2) for 20 seconds in four points (n=10). Then, a three-point bending test was performed using a universal testing machine at a crosshead speed of 0.5 mm/min for measuring the flexural strength and flexural modulus of samples. The data were analyzed by the two-way ANOVA and Tukey test (p< 0.05).Results: The mean highest flexural strength was observed at 45˚C, showing statistically significant difference with flexural strength at 4˚C (p= 0.0001) and 25˚C (p= 0.003) regardless of the type of resin composite. The flexural modulus at 45˚C was highest, showing the statistically significant difference with flexural modulus at 4˚C (p= 0.0001) and 25˚C (p= 0.002). The flexural modulus was statistically different between nanohybrid and silorane-based resin composite (p= 0.01) in 25˚C and 45˚C, but there were no statistically significant differences between flexural strength of Filtek Z250 XT and Filtek P90 regardless of the temperatures (p= 0.062).Conclusion: Preheating the resin composite at 45˚C improves flexural strength and modulus of nanohybrid and silorane-based resin composite. However, flexural strength and modulus of the tested materials were not affected by precooling. The flexural modulus of nanohybrid resin composite was significantly higher than silorane-based resin composite in 25˚C and 45˚C temperatures.
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
Extragingival Pyogenic Granuloma: an Unusual Clinical Presentation
282
285
43551
EN
Suresh Kumar
Sachdeva
Dept. of Oral Medicine and Radiology, Surendera Dental College and Research Institute, Sriganganagar-335001, Rajasthan, India.
Journal Article
2014
08
03
Pyogenic granuloma is thought to represent an exuberant tissue reaction to local irritation. It occurs in second decade of life in young females. Clinically, oral pyogenic granuloma is a smooth or lobulated exophytic growth, pedunculated or sessile, which usually bleeds on provocation. Oral pyogenic granuloma preferentially affects the gingiva. On rare occasion, it can be found extragingivally on lips, tongue, buccal mucosa, and palate which may mimic more serious pathological conditions such as malignancies. This article reports an unusual case of extra gingival pyogenic granuloma occurring on the right buccal mucosa in a female patient and discusses the features that distinguish this lesion from other similar oral mucosal lesions.
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
Evaluation of Bond Strength of Pressed and Layered Veneering Ceramics to Nickel-Chromium Alloy
230
236
43543
EN
Mitra
Farzin
Dept. of Prosthodontic, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Amir Alireza
Khaledi
Biomaterial Research Center, Dept. of Prosthodontic, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Behnam
Malekpour
Postgraduate Student, Dept. of Orthodontic, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Mohammad Hassan
Naseri
Dental Student, Student Research Committee, Dept. of Prosthodontic, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Journal Article
2015
10
25
Statement of the Problem: The success of metal- ceramic- restorations (MCR) depends on the presence of strong bond between porcelain and metal substructure.Purpose: The purpose of this study was to evaluate the effect of hot pressing technique on the bond strength of a metal-porcelain composite in comparison to layering technique.Materials and Method: Thirty Nickel-Chromium specimens were produced by two methods; conventional porcelain layering on metal and hot pressing (n=15). Bond strengths of all specimens were assessed by the means of three–point bending test according to ISO 9693: 1999 (E) instructions. The data were analyzed using Students t-test (p< 0.001).Results: The mean ± SD bond strength of conventional and hot pressing technique was 48.29 ± 6.02 and 56.52 ± 4.97, respectively. Therefore, the conventional layering technique yielded significantly lower mean bond strength values than hot pressing technique (p< 0.001).Conclusion: This study showed that it is possible to improve metal–porcelain bond strength significantly by applying an overpressure during porcelain firing.
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
Clinical and Histopathologic Investigation of Periapical Actinomycosis with Cutaneous Lesion: a Case Report
286
290
43552
EN
Davoud
Jamshidi
Dept. of Endodontics, School of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran.
0000-0003-3676-526X
Fariborz
Moazami
Dept. of Endodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Fereshte
Sobhnamayan
Dept. of Endodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Ali
Taheri
Dept. of Pathology, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran.
Journal Article
2014
08
20
Management of an extra-radicular infection is a challenging procedure that requires surgical intervention. This report describes a patient with discharging cutaneous lesion that required apical surgery. A 40-year-old woman was referred to the Department of Endodontics, Shiraz Dental School with chief complaint of a cutaneous sinus tract. She had been treated by a dermatologist and an otolaryngologist. The patient had also received orthograde root canal treatment of tooth #16. Yet, the lesion was still discharging and the patient was scheduled for surgery. Histopathologic analysis of the lesion showed actinomycosis infection. A 36-month follow-up revealed clinical and radiographic healing.
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
Acid and Alkaline Phosphatase Levels in GCF during Orthodontic Tooth Movement
237
245
43544
EN
Mohammad
Farahani
Dept. of Orthodontic, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
0000-0002-9284-1434
Seyed Mohammadreza
Safavi
Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Omid
Dianat
Dept. of Endodontic, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Somayeh
Khoramian Tusi
Dept. of Pediatric, Dental School, Alborz University of Medical Sciences, Karaj, Iran.
Farnaz
Younessian
Dentofacial Deformities Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Journal Article
2014
06
03
Statement of the Problem: The present constituents of gingival crevicular fluid (GCF) can reflect the changes occurring in underlying tissues. Considering variety of biologic bone markers, alkaline phosphatase and acid phosphatase have been examined as bone turn over markers in orthodontic tooth movement.Purpose: The current study designed in a longitudinal pattern to determine the changes of acid and alkaline phosphatase (ACP & ALP) in GCF during orthodontic tooth movement.Materials and Method: An upper canines from twelve patients (mean age: 14±2 years) undergoing extraction orthodontic treatment for distal movement served as the test tooth (DC), and its contralateral (CC) and antagonist (AC) canines were used as controls. The CC was included in orthodontic appliance without orthodontic force; the AC was free from any orthodontic appliance. The GCF around the experimental teeth was harvested from mesial and distal tooth sites immediately before appliance placement (T0), and 14 (T2) and 28 days (T3) after it and ALP and ACP concentration were determined spectrophotometrically.Results: ALP concentration was elevated significantly in DC and CC groups at days 14 and 28 compared with the AC. In DC group, the ALP was significantly greater in mesial sites than distal site, while no significant changes were found between both sites of CC. The peak level of ALP was observed in mesial sites of DC at T2. Regarding ACP, significant elevation of this enzyme was seen in DC group both in mesial and distal sites at T2 and T3. The peak level of this enzyme was seen at T2.Conclusion: Monitoring simultaneous changes of ALP and ACP levels in GCF can reflect the tissue responses occur in periodontium during bone formation and bone resorption during orthodontic tooth movement, respectively.
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
Basal Cell Adenoma of Palate, a Rare Occurrence with Review of Literature
291
295
43553
EN
Achla Bharti
Yadav
Dept. of Oral Pathology, Postgraduate Institute of Dental Sciences, Pt. B. D Sharma University of Health Sciences, Rohtak, India.
0000-0001-9617-5849
Anjali
Narwal
Dept. of Oral Pathology, Postgraduate Institute of Dental Sciences, Pt. B. D Sharma University of Health Sciences, Rohtak, India.
0000-0001-7468-7886
Anju
Devi
Dept. of Oral Pathology, Postgraduate Institute of Dental Sciences, Pt. B. D Sharma University of Health Sciences, Rohtak, India.
Sanjay
Kumar
Dept. of General Pathology, Post Graduate Institute of Medical Sciences, Pt. B. D Sharma University of Health Sciences, Rohtak, India.
Sumit Kumar
Yadav
Dept. of Orthodontics & Dentofacial Orthopedics, Mithila Minority Dental College & Hospital, Darbhanga, Bihar, India.
0000-0002-0551-3812
Journal Article
2014
12
23
Basal cell adenoma is an uncommon benign epithelial neoplasm of salivary gland which derives its name from the basaloid appearance of tumor cells and accounting for 1-2 % of all salivary gland epithelial tumors. This tumor usually arises in the major salivary glands, with the parotid being the most frequent site of occurrence, followed by the upper lip; while it is very rare in the minor salivary glands. Microscopically, it is composed of isomorphic cells similar to basal cells with nuclear palisading. We report a case of BCA presenting as an asymptomatic swelling over the right side of palate of 55-year-old female patient. A follow-up of 1 year revealed no recurrence. This report emphasizes the rare site of occurrence of this tumor and briefly reviews the literature.
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
Identification of Mesenchymal Stem Cell Marker STRO-1 in Oral Reactive Lesions by Immunofluorescence Method
246
250
43545
EN
Ali
Dehghani Nazhvani
Oral & Maxillofacial Pathology Department, Biomaterial research center, Dental School, Shiraz University of Medical Sciences, Shiraz, Iran.
0000-0002-9472-8793
Seyed-Mojtaba
Hosseini
Cell and Molecular Research Club, Shiraz University of Medical Sciences, Shiraz, Iran.
Bita
Tahoori
Students' Research Committee, School of Dentistry, International Branch, Shiraz University of Medical Sciences, Shiraz, Iran.
Maryam-Sadat
Tavangar
Biomaterial Research Center, Dept. of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Armin
Attar
Cell and Molecular Research Club, Shiraz University of Medical Sciences, Shiraz, Iran.
Journal Article
2014
07
06
Statement of the Problem: Stem cells are considered as new implement for tissue regeneration. Several niches in adult human body are colonized by multipotent stem cells but access to these potential reservoirs is often limited. Although human dental pulp stem cells isolated from healthy teeth have been extensively characterized, it is still unknown whether stem cells also exist in reactive lesions of oral cavity such as pyogenic granuloma and peripheral ossifying fibroma which are deliberated as inflammatory proliferation of different cell families.Purpose: The aim of this study was to explore for clues to see whether pyogenic granuloma or peripheral ossifying fibroma contain dental mesenchymal stem cell (DMSC).Materials and Method: Four pyogenic granuloma and four peripheral ossifying fibroma specimens were collected by excisional biopsy and preserved in PBS-EDTA at -86 °C. Then we cut them in 5µm diameter using Cryostat. Having been rinsed with PBS, the samples were stained with a primary mouse anti-human STRO-1 monoclonal IgM antibody. Afterward, a secondary goat anti-mouse IgM-FITC antibody was applied to detect STRO-1+ cells as probable stem cells by immunofluorescence technique.Results: Immunofluorescence microscopy revealed presence of STRO-1+ cells in these lesions, particularly localized on perivascular zone. The negative control group was not glowing.Conclusion: Based on these results, it was found that reactive lesions of pyogenic granuloma and peripheral ossifying fibroma have STRO-1 positive cells, which raises the possibility that these cells may be DMSCs.
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
The Effect of Four Surface Treatment Methods on the Shear Bond Strength of Metallic Brackets to the Fluorosed Enamel
251
259
43546
EN
Hooman
Zarif Najafi
Orthodontic Research Center, Dept. of Orthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
0000-0002-1516-8880
Vahid
Moshkelgosha
Orthodontic Research Center, Dept. of Orthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Atefeh
Khanchemehr
Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Akram
Alizadeh
Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Ali
Mokhtar
School of Dentistry, Tehran Islamic Azad University of Medical Sciences, Tehran, Iran.
Journal Article
2014
07
08
Statement of the Problem: Some studies have reported the bond strength to be significantly lower in fluorotic enamels than the non-fluorosed.Purpose: The purpose of this study was to evaluate the shear bond strength of metallic brackets to non-fluorosed and fluorosed teeth after different enamel conditioning.Materials and Method: A total of 176 freshly extracted human premolars (88 non-fluorosed and 88 fluorosed teeth) were used in this study for bonding the metallic brackets. Teeth with moderate fluorosis were used according to Thylstrup and Fejereskov index (TFI). Eighty non-fluorosed and 80 fluorosed teeth (TFI=4-6) were randomly divided into 8 equal groups of 20 teeth each. The remaining 16 teeth were used for scanning electron microscopy observation. The enamel surface was conditioned by 4 methods: acid etching for 30 sec, acid etching for 120 sec, air abrasion followed by acid etching, and Er: YAG laser etching followed by acid etching. The morphology of etching patterns in different groups was studied under scanning electron microscope.Results: The shear bond strength of fluorosed teeth to the brackets was significantly lower than non-fluorosed ones (p= 0.003). The shear bond strength of laser-acid groups in both non-fluorosed and fluorosed teeth was significantly lower than other groups (p< 0.001). Weibull analysis indicated that the chance of failure under the applied force was different between fluorosed and non-fluorosed group. The scanning electron microscope observations revealed that the fluorosed teeth treated with phosphoric acid had fewer irregularities compared to non-fluorosed teeth. The most irregularities were detected in the teeth conditioned with phosphoric acid for 120 seconds.Conclusion: Fluorotic enamel adversely affects the bond strength of orthodontic brackets. None of the conditioning methods tested in this study could significantly improve shear bond strength of metallic brackets. Er: YAG laser conditioning followed by acid further reduced the bond strength in non-fluorosed and fluorosed teeth.
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
Comparison of the Effects of Two Different Drinks on Microhardness of a Silorane-based Composite Resin
260
266
43547
EN
Sedighe Sadat
Hashemikamangar
Dept. of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences, International Campus, Tehran, Iran.
0000-0002-7015-7527
Maryam
Ghavam
Dental Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Zhina
Mirkhezri
Dentist, Tehran University of Medical Sciences, International Campus, School of Dentistry, Tehran, Iran.
Mohammad Javad
Karazifard
Dept. of Epidemiology and Biostatistics, Dept. of Public Health, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Journal Article
2014
06
15
Statement of the Problem: Acidic foods and drinks can erode composite resins. Silorane-based composite is a new low shrinkage composite with higher hydrophobicity which might resist the erosive effect of beverages.Purpose: The aim of this study was to determine the effects of 100% orange juice and non-alcoholic carbonated beer on microhardness of a silorane-based composite in comparison with two methacrylate-based composite resins.Materials and Method: Ninety disc-shaped composite specimens were fabricated of Filtek P90, Filtek Z350 XT Enamel and Filtek Z250 (3M-ESPE) (n=30) and randomly divided into 3 subgroups of 10.Group 1 was immersed in distilled water, group 2 in 100% orange juice, and group 3 in non-alcoholic beer for 3 h/day. Primary, secondary and final Vickers microhardness tests were performed at the beginning of the study and 7 and 28 days later. Surface of 2 specimens in each group was evaluated under scanning electron microscope on day 28. Data were analyzed using repeated measures of ANOVA model (α=0.05).Results: The primary and secondary microhardness of P90 was significantly lower than that of Z350, and Z250 (p< 0.001). Microhardness of Z350 was also lower than that of Z250 (p= 0.002). On day 28, microhardness of P90 was lower than Z250 and Z350 (p< 0.001); however, microhardness values of Z250 and Z350 were not significantly different (p= 0.054). Microhardness of specimens subjected to non-alcoholic beer was significantly lower than that of controls (p= 0.003). Meanwhile, the microhardness value of resins in orange juice was somewhere between the two mentioned values with no significant difference with any of them (p> 0.05).Conclusion: Although 28 days of immersion in 100% orange juice and non-alcoholic beer decreased the microhardness of all specimens, P90 experienced the greatest reduction of microhardness and non-alcoholic beer had the highest effect on reducing microhardness.
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
A Profilometric Study to Assess the Role of Toothbrush and Toothpaste in Abrasion Process
267
273
43548
EN
Sandeep
Kumar
Dept. of Public Health Dentistry, Sri Aurobindo College of Dentistry, Indore, Madhya Pradesh, India.
Siddharth Kumar
Singh
Dept. of Oral Medicine and Radiology, Sri Aurobindo College of Dentistry, Indore, India.
Anjali
Gupta
Dept. of Oral Medicine and Radiology, Sri Aurobindo College of Dentistry, Indore, India.
Sayak
Roy
Dept. of Oral Medicine and Radiology, Consultant, Dafodyl dental Clinic, Kolkata, India.
Mohit
Sareen
Dept. of Oral Medicine and Radiology, Rajasthan Dental College, Jaipur, India.
Sarang
Khajuria
Dept. of Oral Medicine and Radiology, Pacific Dental College, Jaipur, India.
Journal Article
2014
07
23
Statement of the Problem: Despite of many studies conducted on toothbrushes and toothpaste to find out the culprit for abrasion, there is no clear cut evidence to pin point the real cause for abrasion.Purpose: An in vitro assessment of the role of different types of toothbrushes (soft/ medium/hard) in abrasion process when used in conjunction with and without a dentifrice.Materials and Method: Forty five freshly extracted, sound, human incisor teeth were collected for this study. Enamel specimens of approximately 9 mm2 were prepared by gross trimming of extracted teeth using a lathe machine (Baldor 340 Dental lathe; Ohio, USA). They were mounted on separate acrylic bases. The specimens were divided into three groups, each group containing 15 mounted specimens. Group 1 specimens were brushed with soft toothbrush; Group 2 brushed with medium toothbrush and Group 3 with hard toothbrush. Initially, all the mounted specimens in each group were brushed using dentifrice and then the same procedure was repeated with water as control. Profilometric readings were recorded pre and post to tooth brushing and the differences in readings served as proxy measure to assess surface abrasion. These values were then compared to each other. Kruskal Wallis and Mann-Whitney U test were performed.Results: The results showed that brushing, with water alone, caused less abrasion than when toothpaste was added (p< 0.008). When brushed with water, the harder toothbrush caused more abrasion (higher Ra-value), but when toothpaste was added, the softer toothbrush caused more abrasion (p< 0.001).Conclusion: Besides supporting the fact that toothpaste is needed to create a significant abrasion, this study also showed that a softer toothbrush can cause more abrasion than harder ones. The flexibility of bristles is only secondary to abrasion process and abrasivity of dentifrice has an important role in abrasion process.
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
A Retrospective Analysis of Oral Langerhans Cell Histiocytosis in an Iranian Population: a 20-year Evaluation
274
277
43549
EN
Saede
Atarbashi Moghadam
Dept. of Oral and Maxillofacial Pathology, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
0000-0002-1731-2786
Ali
Lotfi
Dept. of Oral and Maxillofacial Pathology, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
0000-0003-4273-0274
Batool
Piroozhashemi
Dentist, Private Practice, Tehran, Iran.
Sepideh
Mokhtari
Dept. of Oral and Maxillofacial Pathology, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
0000-0001-5755-1469
Journal Article
2015
03
14
Statement of the Problem: Langerhans cell histiocytosis is a rare disease with unknown pathogenesis and is characterized by local or disseminated proliferation of Langerhans cells. There is no previous investigation on prevalence of oral Langerhans cell histiocytosis in Iranian population.Purpose: The purpose of this study was to assess the relative frequency of oral Langerhans cell histiocytosis in an Iranian population and to compare the data with previous reports.Materials and Method: Pathology files of Oral and Maxillofacial Pathology Department of Dental School of Shahid Beheshti University of Medical Sciences from 1992 to 2012 were searched for cases recorded as oral Langerhans cell histiocytosis. A total number of 20 cases were found and the clinical information of patients was recorded.Results: The relative frequency of oral Langerhans cell histiocytosis was 0.34% and the most common location was the posterior mandible. In addition, the mean age of patients was 27 years and there was a definite male predominance. Most lesions were localized and tooth mobility was the most common oral presentation.Conclusion: In Iranian population as in many other countries, the relative frequency of oral Langerhans cell histiocytosis is low. Moreover, tooth mobility and periodontal lesions are the frequent early signs of disease. Therefore, in patients with periodontal problems, good oral health, and no response to the treatment; Langerhans cell histiocytosis must be considered. Additionally, although most cases of oral Langerhans cell histiocytosis are localized, systemic involvement must also be considered and dental professionals have an important role in early detection of the disease.
Shiraz University of Medical Sciences
Journal of Dentistry
2345-6485
16
Supplement 3- September 2015
2015
09
01
The Effectiveness of Home Water Purification Systems on the Amount of Fluoride in Drinking Water
278
281
43550
EN
Behrooz
Eftekhar
Dept. of Endodontic, School of Dentistry, Ahwaz Jondishapoor University of Medical Sciences, Ahwaz, Iran.
Masoume
Skini
Postgraduate Student, Dept. of Endodontic, School of Dentistry, Ahwaz Jondishapoor University of Medical Sciences, Ahwaz, Iran.
Milad
Shamohammadi
Postgraduate Student, Dept. of Endodontic, School of Dentistry, Ahwaz Jondishapoor University of Medical Sciences, Ahwaz, Iran.
Jaber
Ghaffaripour
DDS, School of Dentistry, Ahwaz Jondishapoor University of Medical Sciences, Ahwaz, Iran.
Firoozeh
Nilchian
Dental Students Research Center, Dept. of Dental Public Health, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
0000-0002-8237-8394
Journal Article
2015
10
25
Statement of the Problem: Water purification systems for domestic use have drawn significant attention over the past few years. This can be related to the improvement of public health and concern for water contamination. Purpose: The aim of this study was to evaluate whether home water purification systems eliminate the essential materials such as fluoride besides filtrating the heavy ions and other unwanted particles out of water.Materials and Method: In this experimental study, six most frequently used commercial brands of water purifiers were evaluated and compared. Specimens were collected right before and after setting up the device, and 6 months later. Then, spectrophotometry (the Harrison device) was performed to compare fluoride clearance by each home water cleaner device.Results: Based on the data collected from all water purification devices in different locations, the amount of fluoride was significantly different before and right after using home water purifier and six months later (p= 0.001 and p= 0.00, respectively).Conclusion: The filtration of water significantly decreased its fluoride concentration. The fluoride content of purified water was approximately as much as zero in some cases.