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BackgroundDental impressions have been required to obtain proper study models. This procedure is time-and laborconsuming for the orthodontist and could be exhausting to the patient, especially when braces are fitted in the context of a research project. This study aimed to assess the accuracy, reliability, and reproducibility of using intraoral photographs and plaster models' photographs in measuring Little's Irregularity Index (LII), tooth size-arch length discrepancy (TSALD), and Bolton's ratios. MethodsA total of 52 dental arches of 26 patients were included in this study. Plaster models, occlusal intraoral photographs, and photographs of the collected plaster models were obtained for each patient. Then, LII, TSALD, and Bolton's ratios were measured using a manual caliper for plaster models' measurements and a software-based on-screen method for the photographs. ResultsThe intraclass correlation coefficients (ICCs) of measurements made on intraoral photographs and photographs of plaster models were high (ranging from 0.90 to 0.99 and from 0.88 to 0.99, respectively), indicating a high level of agreement with the gold standard measurements. In addition, the differences were insignificant. The intra-/inter-examiner ICCs ranged from 0.90 to 0.99/0.92 to 0.99 and from 0.85 to 0.99/0.88 to 0.98 for plaster models and intraoral photographs of the dental arches, respectively. The analysis of reproducibility of capturing intraoral photographs of the dental arches on two different occasions showed high ICCs ranging from 0.96 to 0.99 with almost no significant differences between repeated measurements (P > 0.05). ConclusionLII, TSALD, and Bolton's overall and partial ratios can be measured from intraoral photographs of the dental arches with high accuracy, reliability, and reproducibility. Therefore, this methodology can be suggested for use in research projects when multiple records of the dental arches are required instead of depending on time-and labor-consuming procedures of ordinary dental impressions.

The current study aimed to evaluate the effectiveness of plasma skin regeneration (PSR) in the treatment of cleft lip scars in cleft lip patients. Materials and methodsTwenty patients, 10 females and 10 males, with a mean age of 19 years and who had a cleft lip scar, were included in the current study. All patients were treated with a plasma skin regeneration pen device in one treatment session. The thickness, relief, and pliability of the scars were assessed by external observers using a 10-point numeric rating scale (NRS). ResultsThe thickness, relief, and pliability of the scar were significantly improved according to the observers' opinions (51.67%, 50.25%, and 46.33%, respectively). ConclusionsWithin the limits of this study, the PSR appeared to be safe and effective for treating cleft lip scars with minimal complications.

Objectives: This study aimed to develop metrical and angular indices to predict the sex of unknown skeletonized human remains in Syria using the mandibular bone. Materials and Methods:The sample consisted of 99 CBCT scans of the Syrian population (43 males, 56 females) aged between 18-25 years. The collected CBCT images were analyzed on two occasions and by two examiners to test the reliability of measurements. Four measurements were analyzed to be used for sexual prediction analysis as following: Coronoid-Gonion length (the distance between Gonion and the highest lateral point on the Coronoid process), minimum ramus breadth, Gonial angle, and Bigonial width.Results: All the aforementioned measurements showed significant statistical sex-related differences. The Bigonial width showed the highest difference with (P < 0.01 _ mean: 95.17 ± 6.45 mm for males, 86.84 ± 4.81 mm for females), followed by the gonial angle (P<0.01_ mean: 127.11º ± 7.87º for males, 131.52º ± 6.08º for females). Coronoid-gonion length (P < 0.01 _ mean: 58.61 ± 6.78 mm for males, 53.97 ± 5.26 mm for females) and minimum ramus breadth (P < 0.01 _ mean: 29.63 ± 2.90 mm for males, 27.89 ± 2.73 mm for females). specificity and sensitivity for the four indices derived function were 79 % and 80 % respectively and the diagnostic accuracy was 79.6 %. Conclusions:The present study suggested that the sex of mandible in Syrian population could be assessed using metrical and angular measurements which considered as an additional tool for sex identification.