Congenital midline cervical cleft is a rare and generally isolated malformation of the ventral neck region with no clear etiology established. Mandibular deformities, such as micrognathia, could be considered as a consequence of a cleft cervical contracture. Complete surgical excision of the subcutaneous fibrous cord at an early age is the primary treatment modality, minimizing growth development problems on surrounding affected tissue. The aim of this study is to describe the clinical, surgical, and histological findings in a female child with congenital midline cervical cleft along with a relevant literature review. Three years follow-up after surgery exhibited satisfactory functional and cosmetic results.

Objectives The objectives of this study were to characterize the craniofacial and airway morphology of oculo‐auriculo‐vertebral spectrum (OAVS) individuals using computed tomography (CT) examination. Setting and Sample Population This sample included individuals in the age range from 5 to 14 years, consisted of a group of 18 OAVS individuals (12 females and 6 males), Pruzansky‐Kaban1 IIB and III and by a paired control group matched by age and sex for comparison of morphometric and airway variables. Materials and Methods Through the CT examination, airway analysis was performed using Dolphin Imaging® Software, and seven morphometric measurements were performed to evaluate craniofacial morphology by Materialize Mimics® Software. To compare airway and morphometric variables, the control group was used. Student's t test and Mann‐Whitney U test were performed to compare differences between the groups. Results Statistically significant differences were showed between the control and OAVS groups for the variables: total airway (TA) area, volume and MAA, RP area, RP volume, RP MAA, RG volume, RG MAA, total posterior height diff, Md incl and y‐axis asymmetry. Pearson and Spearman's correlation showed mostly moderate correlations between Mand Occlusal canting AS with TA area and RP volume, Ax‐Gn with TA area and Hy‐C3 with TA volume. Conclusions The OAVS's airway was altered and worse than the control group. Our results suggest that the contralateral side of OAVS individuals is unaffected; however, longitudinal assessments are needed to confirm it. Hyoid bone and postural measures play an important role in interpreting airway features of individuals with and without OAVS.

Objective. Individuals with syndromic craniosynostosis present alterations in the dental arches due to anomalies caused by the early fusion of the craniomaxillary sutures. This study aimed to compare intradental and interdental dimensions between individuals with Apert and Crouzon syndromes and nonsyndromic controls. Materials and Methods. Digital models were obtained from the archive of a public tertiary care hospital. The sample consisted of 34 patients (Apert n = 18, Crouzon n = 16) and 34 nonsyndromic controls matched for gender and age. Measurements of perimeter, length, intercanine and intermolar distances (upper and lower), overjet, and molar ratio were performed. Statistical comparisons were performed using ANOVA and Tukey tests p < 0.05 . Results. Patients with Apert and Crouzon syndromes have severely reduced maxillary transverse dimensions, perimeter, and length of the upper arch compared to the control group p < 0.001 . The lower arch is less impacted. Patients with Apert syndrome had an anterior crossbite p < 0.001 , while patients with Crouzon syndrome had an edge-to-edge bite p <   0.011 . Patients with Apert and Crouzon syndromes do not have serious transverse proportion problems when comparing the upper and lower arches. Conclusions. In this sample, both the Apert and Crouzon groups have severely compromised upper arches compared to the control group. Mild dentoalveolar expansion in the maxilla should be sufficient for the transverse adaptation of the dental arches before frontofacial advancement.

Objective: The aim of this study was to compare the dentoskeletal pattern of Treacher Collins syndrome (TCS) and nonsyndromic Pierre Robin sequence (PRS). Design: Retrospective. Setting: Single center. Patients: Eighteen patients diagnosed with TCS (Group TCS) or PRS (Group PRS) in rehabilitation treatment at a single center. Group TCS was composed of 9 patients (4 male, 5 female) with a mean age of 12.9 years (standard deviation = 4.8). Group PRS was composed of 9 patients paired by age and sex with group TCS. Main Outcome Measure(s): Cone beam computed tomography–derived cephalometric images taken before the orthodontic or the orthodontic-surgical treatment were analyzed using Dolphin Imaging (Dolphin Imaging 11.0 & Management Solutions). Variables evaluating the cranial base, the maxillary and mandibular skeletal components, maxillomandibular relationship, the vertical components and the dentoalveolar region were measured. Intergroup comparisons were performed using t tests. The significance level considered was 5%. Results: Intergroup differences in the mandible size and growth pattern were observed. Group TCS showed a smaller mandibular length (Co-Go, Co-Gn) and a higher palatal plane (SN-Palatal Plane) and mandibular plane angles (SN-Go.Gn) compared to group PRS. No differences between TCS and PRS were observed for the sagittal position of the maxilla, maxillomandibular relationship, and dental components. Conclusions: Treacher Collins syndrome presented a decreased mandible and a more severe vertical growth pattern compared to PRS.

O r i g i n a l a r t i c l eBolton analysis: an alternative proposal for simplification of its use Introduction: Mesiodistal size discrepancies of upper and lower teeth and their effect on occlusion have been related. Bolton's method for tooth size discrepancies is, undeniably, one of the most commonly-used methods in orthodontics because of its simplicity. However, the application of this method requires mathematical calculations and use of tables, which often prevents its clinical use. Purpose: Evaluate an alternative method for Bolton's analysis proposed by Wolford that does not require table information. Material and Methods: The sample was composed of 90 initial dental casts of adult patients, with different malocclusions. The ratio between the sum of widths of maxillary and mandibular teeth was calculated for each patient, resulting in the attainment of two indices: The overall ratio and the anterior ratio. Indices were calculated by Bolton's method and by an alternative method, using two different formulas (one simplified and a variation of the same formula) that were separately analyzed. Results: In comparison with Bolton's method, the Simplified Formulas demonstrated a slight trend towards an overestimation of the inferior dental discrepancies (overall and anterior). Conclusion: Both formulas employed for the alternative method may be used to substitute the traditional method, since each demonstrated, on average, differences of less than 0.58 mm when compared with Bolton's method and no clinical significance. AbstractKeywords: Bolton's analysis. Tooth size discrepancy. Diagnosis.Orthodontic treatment planning.