Drawing is a useful measure of children's emotional status in dental settings in a way that is easier, familiar and more enjoyable for the child patient.

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Background/Aims: Fractures of anterior teeth are a highly prevalent form of dental trauma. Among the various treatment options, reattachment of the fractured part to the remaining tooth has a lot of advantages. The aim of this study was to compare different bevel preparation techniques when reattaching fractured fragments to maxillary central incisors. Methods: This study was performed on 52 maxillary central incisors that were randomly divided into 3 experimental groups and 1 control group. In the control group, the repair was done by attaching the fractured fragment using bonding and composite resin without any bevel preparation. In the second and third groups, the bevel preparation was done to a depth of 0.5 mm before attachment of the fragment on the palatal side of the fracture and on the labial and palatal sides, respectively. In the fourth group, after tooth preparation, a 0.5 mm composite veneer was placed on the labial surface. The amount of force needed to refracture the tooth was measured with a universal testing machine, and shear bond strength was calculated in MPa. Results: The mean and standard deviation (mean ± SD) of shear bond strengths in the control group were 81.48 ± 8.18 MPa. In the palatal bevel group, they were 97.74 ± 11.41 MPa; in the labial and palatal bevel group, 131.56 ± 9.25 MPa; and in the composite veneer group, 104.36 ± 5.50 MPa. Significant differences were observed between the groups, but there was no significant difference between the palatal bevel and composite veneer groups. Conclusions: Reattachment of the fractured fragments by all three methods increased the shear bond strength. The highest shear bond strength was obtained when both labial and palatal bevels were used.

Objective: To determine compatibility between clinical diagnosis and the pathological reports of biopsies from oral lesions. Material and Methods: In this descriptive study, 1146 clinical files of patients referring to Tabriz Faculty of Dentistry from 2004 to 2016 were retrieved and evaluated. The kappa coefficient was calculated for each file for compatibility of clinical and pathological diagnosis. Results: In relation to clinical (40.2%) and pathological (39.2%) diagnosis, irritational lesions of soft tissues exhibited the highest frequency. In 72.3% of cases, the clinical and pathological diagnosis were compatible and in 27.7% of cases these diagnosis were not compatible. The highest compatibility rates were detected for irritational lesions of soft tissues (81.5%) and mucocutaneous lesions (76.9%). There was no compatibility for osseous malignant tumors, inflammatory tissues, granulation tissues, metastatic lesions and hematologic disorders. Conclusion: Approximately one-third of clinical and histopathological diagnosis were not compatible. Therefore, to reach a correct diagnosis, the clinical, radiographic and histopathological views should be evaluated simultaneously.

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