فهرست مطالب

Journal of Dental Research, Dental Clinics, Dental Prospects
Volume:2 Issue: 2, Spring 2008

  • تاریخ انتشار: 1389/04/01
  • تعداد عناوین: 7
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  • Hamid Reza Abdolsamadi, Mohammad Vahedi, Farzad Esmaeili, Shahrzad Nazari, Shermin Abdollahzadeh Pages 43-47
    Background and aims. Chronic periapical disease with pulpal origin is an inflammatory condition caused by bacterial infection. Chronic infection could affect general health by increasing the production of cytokines such as interleukin-6 (IL-6) that probably play a role in pathogenesis of pulpal and periapical diseases. The aim of the present study was a comparative evaluation of the level of serum IL 6 in patients with periapical lesions and healthy controls.Materials and methods. This analytical case-control study included 40 patients with chronic periapical lesions and 40 individuals without any oral diseases. All of the participants were in good general health. After obtaining an informed consent, clinical and radiographic examinations were carried out and blood samples were collected. Serum IL-6 was measured using ELISA. Data were analyzed using t-test by SPSS 14.0 computer software. Results. Serum IL-6 concentration was significantly higher in test group compared to the controls (P < 0.05).Conclusion. The results of the present study indicate that IL-6 produced in periapical lesions may serve as a marker of pathologic inflammatory activities in chronic periapical lesions.
  • Fatemeh Ezzoddini Ardakani, Jamshid Ayatollahi, Zahed Mohammadi, Fatemeh Ayatollahi, Behnaz Behniafar Pages 48-52
    Background and aims. The exposure and processing of dental radiographs are not routinely associated with the spatter of blood or saliva; however, infection control is still an issue resulting from contaminated equipment, supplies, film packets or cassettes. This study aimed at comparing the efficacy of four commercially available disinfectants on microorganisms present on the equipment of radiology department.Materials and methods. Samples from twelve sites of the radiology department were collected using a sterile swab smeared with normal saline, which was then dipped in a test tube. Experimental surfaces were then disinfected by the spray-wipe-spray method using one of Micro 10, Deconex, Alprocid or Microzid AF disinfectants, followed by resampling. The samples were subsequently cultured on blood agar and EMB plates and the colonies were counted. Isolates were identified by biochemical tests. For statistical analysis, Wilcoxon signed ranks test, Kruskal-Wallis, Chi-square and Fisher exact tests were used.Results. Staphylococcus aureus and coagulase-negative staphylococci had the highest and Lactobacillus spp. had the lowest prevalence before disinfection. There were significant differences between the cfu/mL of bacteria before and after disinfection with any of the four disinfectant solutions. There was a significant difference between efficacy of Deconex and Alprocid (P = 0.014), Deconex and Microzid AF (P = 0.001), and Deconex and Micro 10 (P = 0.001). Conclusion. According to the results, Deconex has the highest disinfectant efficacy compared to other solutions.
  • Mohammad Hossein Ahangar Atashi, Mozhghan Kachooei Pages 53-57
    Background and aims. This study aimed to establish soft tissue cephalometric standards in Iranian adults based on NHP, which can be used in diagnosis of orthodontic and orthognathic patients.Materials and methods. A group of 46 individuals (24 males and 22 females) with normal occlusion and proportional facial profile were chosen from a large group of dental students. For the all of the chosen sample, lateral cephalograms were obtained with head oriented in natural position. On the basis of the true horizontal and true vertical lines, the standard values of 19 soft tissue measurements were determined using McNamara, Burstone and Viazis methods.Results. In this study, the mean value of SN deviation to true horizontal line was 6.6°. Comparison between two genders showed that females have more obtuse nasolabial angle and thinner soft tissue chin than males (P < 0.05). Linear measurements showed that the overall size of males was more than females (P < 0.05).Conclusion. Cephalometric norms based on NHP were found to be more reliable in orthognathic patients.
  • Leila Bassir, Mashallah Khanehmasjedi Pages 58-62
    Background and aims. Many children still face active and uncontrolled dental caries and data is needed for evaluating the situation in many parts of the country. The aim of the present survey was to evaluate the oral health of the young population of Ahwaz, Iran in 2005. Materials and methods. In this descriptive cross-sectional study, 600 15-year-old students were selected randomly. Data was gathered with clinical examination and a questionnaire, collecting data of DMFT of first permanent molars, OHI-S, oral hygiene and nutrition habits, and parents’ education. Statistical analysis was performed by descriptive statistics and t-test. Results. Mean DMFT of first permanent molars was 1.84 ± 1.54, with a higher value seen among girls. Mean decayed teeth component was 1.56, followed by filled (0.17) and missing (0.1) components. Higher DMFT values were significantly associated with poor OHI-S score (P = 0.001). Conclusion. The observed oral hygiene status among the 15-year-olds necessitates implementing preventive as well as restorative measures to improve the oral health status of the young population.
  • Laya Safi, Alireza Adl, Mohammad Reza Azar, Raheleh Akbary Pages 63-67
    Background and aims. Accurate differential diagnosis between radicular cysts and periapical granulomas cannot be made from radiographs alone. Histological prevalence studies, therefore, assume special importance and may aid the clinician in making judgments regarding therapy. The incidence of radicular cysts has ranged with wide discrepancies in data. The purpose of this study was to evaluate recorded pathologic reports of two common types of chronic periapical lesion in Shiraz Dental School. Materiasl and methods. In this study, biopsy reports of 227 specimens of chronic periapical lesions were reviewed. The following information was extracted from each report: patient’s gender, age, tooth associated with the lesion and the pathological diagnosis. Probable significant differences in the occurrence of lesions between different ages and genders were analyzed using chi-square test. Results. 15.9% of the lesions were granulomas, and 84.1% were cysts. A slight difference in the occurrence of the lesions was found between males and females with no statistical significance (P > 0.005). The highest incidence of both lesions was in the third decade of life. No significant differences were found in age distribution of the lesions. The most common location for two lesions was the maxillary anterior teeth. Conclusion. Histological differentiation between cysts and granulomas is not always accurate and serial sectioning of excisional biopsies is more valuable than randomized sectioning of curetted biopsies.
  • Amir Mansour Shirani Pages 68-70
    Lipoid proteinosis is a rare hereditary metabolic disorder transmitted as an autosomal recessive trait. It is characterized by the deposition of an amorphous hyaline-like material (glycoprotein) in the mucous membranes, skin and various internal organs. Cryosurgery (N2O) was applied to remove and reshape the lip lesions in a case of this rare syndrome. The patient was a 24-year-old female. Cryosurgery (−63ºC N2O for one minute) was performed to re-shape some areas of the upper lip. The lips were softer and had better esthetics after treatment. The use of cryosurgery offers advantages over surgery in reshaping of the lip lesions in this syndrome, since suturing is not feasible in rigid mucosa of these patients.
  • Hooman Ebrahimi, Javad Yazdani, Sara Pourshahidi, Farzad Esmaeli, Ali Taghavi Zenouz, Masoumeh Mehdipour Pages 71-75
    Central giant cell granuloma (CGCG), formerly called giant cell reparative granuloma, is a non-neoplastic proliferative lesion of unknown etiology. It occurs most commonly in the mandible. The case reported here resembled a wide variety of conditions that led to a misdiagnosis both on clinical and radiographic examinations but was histopathologically diagnosed as CGCG. We describe a case of CGCG arising from the posterior maxilla to highlight the importance of histopathology in the diagnosis of this enigmatic lesion.