Journal of Islamic Dental Association of IRAN
Volume:33 Issue: 1, Winter-Spring 2021

Tooth discoloration induced by endodontic sealers is an un-desired outcome of endodontic treatment that affects the esthetic appearance of the teeth, which is important especially in the anterior region. The aim of the present study was to compare the coronal discoloration caused by two frequently used resin-based sealers namely EasySeal and AdSeal.

For this experimental ex-vivo study, 75 intact human maxil-lary central incisors were employed. Access cavities were prepared and the coronal portion of the root canals was instrumented in all teeth. The samples were randomly divided into experimental and control groups (n=15); group A (EasySeal), group B (AdSeal), positive control group (amalgam), negative control group 1 (gutta-percha), and control group 2 (distilled water). The access cavity was sealed by self-cure glass ionomer. Color measurements were carried out using a spectrophotometer at the following time intervals: before the sealer placement (T0), and 1 week (T1), 1 month (T2) and 3 months (T3) after sealer placement. The acquired data were analyzed using the Kruskal-Wallis, Mann-Whitney U, and Wilcoxon signed-rank tests.

The teeth filled by EasySeal showed a significantly higher discoloration than those filled with AdSeal at T2 (P=0.01) and T3 (P=0.05). However, there was no statisti-cally significant difference between EasySeal and AdSeal at T1 (P=0.09).

The results of the present study suggest that both EasySeal and AdSeal cause considerable coronal discoloration. However, EasySeal causes greater coronal discoloration than AdSeal.

Researchers believe that emotional intelligence (EI) is a better predictor of a person’s success in life than intelligent quotient. The aim of the present study was to determine the relationship between the EI and academic performance of senior dental students.

This descriptive cross-sectional study evaluated all senior dental students (n=131) of Tehran University of Medical Sciences by census sampling. The Bar-On Emotional Quotient Inventory (EQI) was used to evaluate the EI. The score of the comprehensive basic science exam (CBSE), grade point average (GPA), point average of the tenth semester (PA-10), and point average of practical sub-jects of the tenth semester (PA-10P) were used to assess the students’ academic status. Demographic characteristics of the students and their participation in life skill courses were recorded. In order to determine the relationship between the variables and sub-scales of EI, a backward linear regression model was adopted. The significance level was set at 0.05.

The response rate was 80% (n=106, 69 females). A direct relationship was observed between the total EI score and PA-10P (P=0.019), while there was an inverse significant relationship between the total EI score and GPA (P=0.007). The to-tal EI score had a significant relationship with participation in life skill courses (P=0.039). No relationship was observed between the total EI score and any of the demographic characteristics, CBSE score, or PA-10.

It seems that students with higher EI perform better in practical dental courses.

The quality of dental treatment is one of the factors that affects life satisfaction in the elderly. Patients expect optimal function, esthetics, and speech from their prosthesis, while durability and technical considerations are also important for clinicians. In addition, social and psychological factors as well as costs can affect patient satisfaction. This study aimed to evaluate the relationship of life sat-isfaction with satisfaction with implant treatment.

In this cross-sectional study, a total of 67 partially edentulous patients (molars and premolars) who had undergone prosthetic treatment 2-6 months earlier were recruited by convenience sampling in Isfahan, Iran. Data were collected by a questionnaire and analyzed using SPSS version 24 via t-test, ANOVA, and Pearson’s correlation test.

The mean score of satisfaction with implant treatment was 33.70 ± 5.15 while the mean score of satisfaction with old age was 24.28 ± 4.75 out of 45. There was a significant correlation (r=0.748) between life satisfaction and satisfaction with implant treatment (P=0.001). Patients with higher level of education were more satis-fied with their treatment (r=0.407, P=0.023). There was a significant difference between satisfaction with single crowns and bridges, and the use of single crowns was associated with greater level of satisfaction with treatment (P=0.004).

Satisfaction with implant treatment is significantly correlated with life satisfaction among the elderly. Gender and surgical history were not correlated with treatment satisfaction, but higher educational level and having a single crown were as-sociated with greater patient satisfaction.

This study evaluated the effect of hydrothermal aging on opti-cal and mechanical properties of opaque and translucent zirconia.

For the biaxial flexural strength (BFS) test, 40 sintered opaque and translucent disc-shaped zirconia, and for the assessment of surface rough-ness and optical properties, 20 specimens were fabricated and artificially aged in an autoclave for 10 h. The CIE L*a*b* color parameters were measured. The translucency parameter (TP), contrast ratio (CR), opalescence (OP), and color difference against a white (ΔEW) and a black (ΔEB) background were all calculated. The surface roughness (Ra and Rz) was analyzed using a profilometer and the BFS test was performed at a crosshead speed of 1 mm/min. Data were analyzed using two-way ANOVA, t-test, and Mann-Whitney test (α=0.05).

The mean Ra (P=0.023) and Rz (P=0.011) significantly decreased after aging. Aging had no significant effect on TP (P=0.384), CR (P=0.261), or BFS (P=0.912). The mean TP values of translucent specimens were significantly higher than those of opaque specimens (P=0.046). For translucent specimens, the mean OP did not signifi-cantly change after aging (P=0.685) but aging significantly increased the OP of opaque specimens (P=0.007). The mean ΔEW and ΔEB of translucent specimens were higher than those of opaque specimens (P=0.044 and P=0.019, respectively).

Although aging affected the OP parameter, other optical properties and also BFS of both zirconia types were not affected by hydrothermal aging. However, the surface roughness of both zirconia types significantly decreased as a re-sult of aging.

Full extraction is often accompanied by adverse functional and esthetic effects. Postponing tooth loss is the ultimate goal of dental care. Thus, knowledge about the reasons of tooth loss and the mean age of patients can help in de-signing preventive programs. The aim of this study was to evaluate the causes of full mouth extraction of teeth and the mean age of patients.

This cross sectional descriptive analytical study evaluated 102 patients referred to the Department of Maxillofacial Surgery in 2018-2019 for full mouth extraction of teeth. Information including age, gender, income, history of smok-ing, history of drug use, and systemic diseases was recorded in a checklist by the ex-aminer. The data were analyzed using the Chi-square test and ANOVA.

The mean age of patients was 46.42 ± 10.58 years. The most important caus-es of full mouth extraction were caries (43.2%), caries and periodontal disease (37.3%), periodontal disease (16.7%), and prosthetic considerations (3.9%). Of all, 48% of patients had a history of substance abuse, and more than 97% had a medium income level.

The most important reasons for full mouth extraction were dental caries, periodontal disease, and prosthetic considerations. The mean age of patients presenting for full mouth extraction of their teeth was relatively low.

Central mucoepidermoid carcinoma (CMEC) is a rare primary intraosseous bony lesion. The mandible is more commonly affected than the maxilla. CMEC is frequently misdiagnosed radiographically and clinically as a benign odontogenic tumor or cyst.

We present a rare case with a secondary malignant neoplasm. A male patient was initially diagnosed with B-cell non-Hodgkin lymphoma. Three months after his initial diagnosis, he presented with a large painless mass in the anterior region of his mandible. Histopathological examination revealed low‐grade CMEC.

We reported a very rare case of CMEC in a patient treated for non-Hodgkin lymphoma without radiotherapy. Previous cases of secondary CMEC have demonstrated an increased risk in patients with leukemia/lymphoma after radio-therapy.