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Effect of pulp tester probe placement site on the response of maxillary anterior teeth
Jalil Modaresi, Amir Reza Heshmat Mohajer, Hossein Aghili, Morteza Khorshidi, Faramarz Rostami Chavoshlo, Amirmohamad Mahabadi,
Volume 25, Issue 3 (1 2012)
Abstract

Background and Aims: Electric pulp testing is used for diagnosis of the pulp status. This test is technique sensitive and hence may elicit positive or negative false response in case of inaccurate use. The optimal site for placement of the probe tip has not been determined. The aim of this study was to evaluate the effect of pulp tester probe placement site on the response of maxillary teeth.
Materials and Methods: A total of 378 teeth (126 central incisors, 126 lateral incisors and 126 canines) in 67 voluntary 20-35 year-old patients were selected. Three sites on each tooth (incisal edge, labial and lingual surfaces) were tested with an electrical pulp tester and responses were recorded. Data were analyzed by Repeated Measure ANOVA test.
Results: The central teeth showed significantly lower sensation threshold than lateral and canine teeth (P<0.001). The incisal edge of tooth were significantly more sensitive compared to labial and lingual surfaces (P=0.008).
Conclusion: This study showed that the optimum site for placement of pulp tester probe was incisal edge.


Comparative Assessment of Dentists’ Psychological Health Status in Shiraz with Their Physicians Counterparts Using General Health Questionnaire (GHQ-28)
Alireza Choobineh, Masoud Neghab, Jafar Hasanzade, Reza Rostami,
Volume 25, Issue 4 (9 2013)
Abstract

Background and Aims: This study was conducted to assess the psychological health status of dentists in Shiraz city.

Materials and Methods: In this cross-sectional study, subjects consisted of 106 dentists and 94 general practitioners (comparison group) from private and public clinics in Shiraz city. Subjects were requested to complete the standard general health questionnaire and a questionnaire on demographic variables. The data were analyzed by appropriate statistical tests. Chi-Square test and independent sample t-test were used to compare demographic and occupational variables of both groups. The questionnaires were scored and the overall score of each individual determined his/her psychological health status. Means of GHQ scores of both groups were compared using statistical tests.

Results: Both groups were similar in all demographic variables, except for age. The mean total score of GHQ-28 for both dentists (17.9) and physicians (16.34) groups were significantly lower than the cut-off point value of 23 (P <0.01). The means of scores for somatic problems, depression, anxiety and insomnia as well as unusual social performance scales were significantly different between both groups (P<0.05). A significant positive association was found between GHQ total score and job tenure.

Conclusion: Our findings revealed that psychological health status of dentists was poorer than that of physicians. Additionally, dentists' scores were significantly different from those of their counterparts in all GHQ sub-scales.


The relationship between fatigue, stress and job performance with some demographic variables in dental prosthesis technicians
Bahram Kouhnavard, Hosseinali Mahgoli, Somayeh Bolghanabadi, Mohsen Yazdan Aval, Maryam Rostami Aghdam Shendi, Malihe Kolahdouzi,
Volume 31, Issue 2 (9-2018)
Abstract
Background and Aims: Making dental prostheses is sensitive and accurate work and requires powerful and skilled hands. Because of this, the dental prosthesis technicians may suffer harmful effects such as stress and fatigue during the course. The aim of this study was to investigate fatigue, stress and job performance and their relationship with some demographic variables in this community.
Materials and Methods: The present study was cross-sectional and done in 2016. The study population was a group of dental prosthesis technicians that had participated in a national congress in Tehran. Sampling was done by census Two standardized questionnaires on the subjects of fatigue and stress which were distributed among 100 female and male participants and sampling was done by census. Then, the obtained data was analyzed using SPSS16 software and applying descriptive statistics, Pearson correlation test, and ANOVA, T-test.
Results: From the 100 samples, there were 16 females and 84 males with mean age 34.71±7.90 and average work experience of 10.82± 9.01 years. 82 percent of the subjects were married and 42 percent of them were smokers. The results showed that 100 percent of dental prostheses technicians were facing with moderate to severe stresses. The stress and fatigue scores in married ones were higher than the single ones. The results showed a significant relationship between smoking, stress, and fatigue scores (P<0.05).
Conclusion: According to the high level of job stress in the dental prostheses technicians, this problem must be considered, minimized, and more attention should be paid to their psychological and emotional problems.

Investigating the level of oral health literacy among students of Shiraz University of Medical Sciences in 2023
Mohammad Hossein Rostami, Sedighe Sadat Tabatabaei Far, Mohammad Amin Bahrami,
Volume 37, Issue 0 (3-2024)
Abstract
Background and Aims: Oral health literacy plays an important role in reducing oral health disparities. Evaluation of oral health literacy can be done at individual and population levels. This study was conducted with the aim of investigating oral health literacy among students of Shiraz University of Medical Sciences in 2023.
Materials and Methods: This study was descriptive, applied and cross-sectional. The research population included the students of different academic levels of Shiraz University of Medical Sciences, except the final semester students. The sample size was calculated based on the total number of students studying at different levels at Shiraz University of Medical Sciences in the second half of the academic year in 2023 using an appropriate statistical formula. Sampling was done in a stratified-random manner according to faculty, field, and level of education. The oral health literacy of the participants based on education level, age, and gender was measured by the oral health literacy adult questionnaire (OHL Adults Questionnaire: OHL-AQ). Data analysis was done using SPSS 27 software and descriptive statistics (mean, standard deviation, percentage), independent t-test, Kruskal-Wallis, and Tukey test.
Results: The findings indicated that the average oral health literacy score of students was 14.75±1.37. Also, there was a statistically significant relationship between the average oral health literacy score of students and the parameters of education level, gender, and age of students (P-value < 0.05). This indictaed that the oral health literacy of students increased in the doctoral level and also with increasing age. In addition, the female students had higher oral health literacy.
Conclusion: Based on the results, the oral health literacy among Shiraz medical students was high. People with higher education level and age had higher level of oral and dental health literacy than people with lower education level and age. Oral and dental health literacy level was higher in girls than boys. It can be suggested that a 1) suitable platform be provided in order to improve the level of education of the society, leading to the improvement of the oral health literacy of the people; 2) regular dental examinations in order to increase the oral health literacy of the society is encouraged and promoted, especially in lower year students; and 3) research in effective training in the field of oral health literacy to increase the oral health literacy of people in the society.

Assessing the knowledge of dentists on dental adhesive system selection in Rafsanjan in 2023
Mostafa Sadeghi, Niloufar Jafari, Mohammadhossein Kafi, Ali Rostami,
Volume 38, Issue 0 (4-2025)
Abstract
Background and Aims: The development and regular use of adhesive systems has started to revolutionize many aspects of restorative and preventive dentistry. The success of adhesive restorations highly depends on correct application of them. Therefore, the present study was conducted with the aim of determining the knowledge of dentists in Rafsanjan city (Iran) in choosing correct dental adhesive systems in 2023.
Materials and Methods: In this cross-sectional descriptive study, all dentists working in Rafsanjan city were included. The data was collected by a valid and reliable electronic questionnaire, which included two parts of demographic information (gender, age, place of work and year of graduation) and the 12 multiple-choice questions aimed to assess respondents' knowledge regarding the selection of dental adhesive materials in combination with self-cure or dual-cure composites, anterior and posterior composite restorations, fiber posts, fissure sealants, primary teeth, anterior composite veneers, ceramic laminates, and non-carious cervical lesions. The scoring of this questionnaire was as follows: 0 to 3 correct answers = Low level of knowledge; 4 to 6 correct answers = Moderate level of knowledge; 7 to 9 correct answers = Good level of knowledge; 10 to 12 correct answers = Very good level of knowledge.  The four answer choices included "etch-and-rinse (three-step)", "etch-and-rinse (two-step)", "self-etch (two-step)", and "self-etch (all-in-one bottle)". Then data were analyzed by parametric tests (ANOVA, t-test, and Pearson). The significant level was considered as P<0.05.
Results: Out of 91 dentists in Rafsanjan, 79 (86.8%) participated in the study, of which 35 (46.3%) were men. The average work experience was 3.49±3.96 years for men and 2.98±3.73 years for women. The average knowledge score was 4.38±2.16 out of 12 (4.29±2.23 in men and 4.45±2.12 in women). The results showed that there was no significant relationship between the knowledge score and the gender, age, work experience, and workplace (P>0.05).
Conclusion: According to the results which indicated the insufficient knowledge of dentists in  choosing correct dental adhesive systems, it is suggested to pay more attention on teaching in this field at the dental schools. For graduate dentists, new and practical information about the choice of adhesive systems should be provided by continuous education programs.

The effect of first premolar extractions on overall and anterior Bolton ratios in patients with bimaxillary dentoalveolar protrusion
Amirhosein Rostami, Seyedali Seyedmajidi, Valiollah Arash, Abbas Ramyar, Nima Hedayati Goodarzi, Amirhosein Ghasemi, Reza Faraji,
Volume 39, Issue 0 (3-2026)
Abstract
Background and Aims: Bimaxillary dentoalveolar protrusion (BDP) is a common orthodontic anomaly characterized by protrusive dental arches and lip prominence. Extraction of the first premolars is a frequently employed treatment approach in these patients. However, the effect of this intervention on Bolton ratios-particularly the overall and anterior ratios-remains unclear. This study aimed to evaluate the impact of first premolar extractions on Bolton ratios in patients with BDP.
Materials and Methods: This experimental study was conducted on archived physical models of 34 Class I patients with BDP and functional lip incompetency (>4 mm) accompanied by lip protrusion, available at the Orthodontics Department of School of Dentistry, Babol, in 2024. All patients had a full complement of teeth from the first incisor to the first molar in each quadrant. After digitizing the models, mesiodistal tooth widths and the overall and anterior Bolton ratios were calculated. Digital simulation of first premolar extraction was performed, followed by reassessment of Bolton ratios. Pre- and post-treatment values were statistically compared using paired t-tests in SPSS (significance level set at 0.05).
Results: Among 34 studied casts, 67.6 % belonged to females. The mean overall Bolton ratio decreased significantly from 90.33 ± 2.23% to 87.72 ± 2.39%, and the anterior ratio declined from 78.19 ± 2.96% to 77.85 ± 3.03% (P<0.001). Additionally, 15 patients exhibited residual space post-treatment, primarily in the mandibular arch.
Conclusion: Based on the results of the present study, first premolar extraction significantly reduced both the overall and anterior Bolton ratios in patients with bimaxillary dentoalveolar protrusion. However, the likelihood of residual space—particularly in the lower arch-should be carefully considered during orthodontic treatment planning to ensure long-term stability and success.

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