Maryam Kazemipoor, Afrooz Hajighasemi, Sanam Mirbeigi,
Volume 18, Issue 6 (9-2015)
Abstract
Background: Mandibular premolars, because of high anatomic variations, are among the most difficult teeth for root canal treatment.The aim of this study is to compare and evaluate root canal morphology of mandibular first premolars between males and famales in an Iranian population applying CBCT imaging.
Materials and Methods: In this analytical-cross sectional study, 230 CBCT imaging belonged to 115 males and 115 females were evaluated in this study. Images were assessed in the three spatial planes and the difference in the number of canals and roots were compared and reported statistically. Data were analyzed using SPSS 17 software and Chi-square test.The significance level was set as p<0.05.
Results: In total, of 460 mandibular first premolars, 85.7% had one root, 14.3% had two roots, 63.9% had one canal and 36/1% had two canals. In comparison between two genders, in the males the prevalence of one root was 78.7%, two roots 21.3%, one canal 60% and two canals 40%. In the females, the prevalence of one root was recorded as 92.6%, two roots 7.4%, one canal 67.8% and two canals 32.2%.
Conclusion: According to the results of this study the number of roots in the mandibular first premolars in males was statistically more than in females.
Hamzeh Ekran, Amin Ghanbarnejad, Masomeh Afsa,
Volume 23, Issue 6 (11-2020)
Abstract
Background and Aim: Recognizing the position of the Mental Foramen (MF) is essential in numerous cases, such as anesthesia injection and periapical surgeries in the anterior region of the mandible. Furthermore, the diversity in the location and position of MF can develop problems during surgery in this region.
Methods & Materials: The present study examined anatomical landmarks based on panoramic radiographic images obtained in Bandar Abbas City, Iran. In total, 450 panoramic radiographic images of men and women were assessed. All explored images were converted to JPEG format and entered in real size in Auto CAD software (2014). The collected data were analyzed in SPSS by one-way Analysis of Variance (ANOVA), Student’s t-test, and Chi-squared test.
Ethical Considerations: This study was approved by the Ethics Committee of Hormozgan University of Medical Sciences (Code: IR.HUMS.REC.1394.189).
Results: The obtained data revealed that the mean distance from the MF to the lower edge of the mandible on the right and left was 10.53 mm and 10.51 mm, respectively. The mean distance from the MF to the posterior side of the mandible equaled 49.36 mm on the right and 48.72 mm on the left. Moreover, the mean distance of MF to the midline of the lower jaw on the right and left was calculated as 27.16 and 26.27 mm, respectively. Furthermore, in most cases, the anterior-posterior position of MF was symmetrical concerning anatomical landmarks. The anterior-posterior distance of MF to mandibular midline was significantly different between the explored males and females (P<0.001). There was no significant gender-wise difference in the shape of the MF (P=0.89).
Conclusion: The present research results signified that the most frequent anterior-posterior position of the MF is between the apex of the first and second premolars. Furthermore, the most prevalent shape of MF is oval per panoramic images.
Anis Moradi, Pouya Ramin,
Volume 24, Issue 5 (11-2021)
Abstract
Background and Aim: The research results show tobacco use increases cardiovascular and lung disorders or the probability of periodontitis in humans, while no definitive relations were yet confirmed. This study evaluates the relationship between periodontitis and tobacco use by panoramic radiography in Bandar Abbas City.
Methods & Materials: A total of 198 panoramic radiographs were classified into periapical healthy (n=99) and patient (n=99) groups. Radiologists assessed radiographs for periodontitis via Total Teeth Numbers (TTN), the quality and length of Root Filling Treatment (RFT), the number (NoRFT), and inadequate root filling treatment (RFTin), age, gender, the cigarette and hookah use, and dental debris. Data were analyzed by Chi-Square, t-test, and logistic regression.
Ethical Considerations: Due to the lack of therapeutic intervention and the preservation of patients’ characteristics, ethical considerations are not included in this study (Code: IR.HUMS.REC.1399.384)
Results: Tobacco, hookah use, TTN, and RFTin were different (P<0.01) in groups, but cigarette smoking, debris, RFT, NoRFT, and age were not. Women in the periodontitis group showed high (P<0.01) in tobacco, hookah use, and RFTin, while no gender differences were observed in other parameters. The logistic regression results showed that based on the Odd Ratio NoRFT (39.7), RFTin (36.8), `hookah (8.1), tobacco (6.57), debris (3.62), smoking (3.59), RFT (1.4) and TTN (0.89) were the highest (P<0.01). At the same time, age and gender did not affect periapical tissues.
Conclusion: Hokka, tobacco, and cigarette use negatively affected the periapical tissues, respectively. The decrease in TTN and increase in debris and RFT were probably the effects of tobacco smoking on the periapical tissues. Age and gender were not related to the periapical lesions.
