Objective: To establish gender-specific normative data for Polish children at the age of 10 years. Materials and Methods: Thirty-nine boys and 34 girls (mean age 10.37, SD ϭ 0.52) of Polish ethnicity were selected based on the following criteria: Class I molar relationship, lack of crossbite or scissor-bite, positive overjet and overbite less than 5 mm, adequate amount of space in both dental arches, no visible asymmetry, and good facial proportions. Lateral cephalograms of each subject were scanned and analyzed with the use of NemoCeph NX2005 software. Descriptive statistics (mean and standard deviation) were calculated for all measured variables. Independent t-tests were performed to assess the intergender differences. The results were compared to the published norms of other white populations. Normative data were presented in the tables. Results: Intergender differences included anterior cranial base length (sella-nasion), total and lower anterior facial height (nasion-menton and ANS-menton, respectively), posterior facial height (sella-gonion), SNA angle, point A to nasion perpendicular distance, pogonion to nasion perpendicular distance, and facial axis. Conclusions: Polish 10-year-old boys had a larger anterior cranial base, and larger total anterior, lower anterior and posterior facial heights than girls. The maxillae and chin protrusion were more pronounced in girls.

Dental arch relationship following one-stage repair was comparable with the results of the centers with the best outcome.

Maxillary prominence, as measured with the sella-nasion-point A angle and the condylion-point A and articulare-point A distances, was decreased. Shortened length and posterior position of the maxillary body were responsible at a ratio of 60% to 40% for a decreased prominence of the maxillary complex. The palatal plane demonstrated a larger inclination to the sella-nasion plane by 4.5 degrees due to a decreased sella-posterior nasal spine distance.

The mandible, following a one-stage simultaneous repair of cleft, was found to be retrusive, and the length of mandibular body was <2 mm shorter than that of the controls.

Congenital midline cervical cleft is a rare anomaly of the neck. This paper presents the case of a boy diagnosed with this disorder in which a preliminary orthodontic treatment was implemented. The craniofacial anomalies associated with this malformation produced a defect that could only be successfully treated through the implementation of orthodontic and surgical treatments. In this case, congenital midline cervical cleft was accompanied by certain disorders within the facial structures of the skull, primarily mandibular retrusion, flattening of the contour of the mandibular base, and a steep angle between the cranial base and the mandibular plane.