الملخص
The aim of the research is to assessment of dental arch width in skeletal anterior open bite patients and its compared with normal skeletal relationship patients in the vertical plane using digital study models.
The study sample consisted of 40 patients (18- 28) years, divided into two groups (skeletal anterior open bite patients) and (normal vertical skeletal relationship patients), each group consisted of 20 patients, after upper and lower impressions were taken for all study patients by alginate materials, they casted and the study models have been prepared, then all plaster models have been scanned by the scanner (Identica Hybrid scanner), and obtained the digital dental models for all patients. Upper and lower dental arch width were measured (Intercanine width, interpremolar width, intermolar width) for two groups using 3shape software.
this study shows statistically significant differences between the two groups in upper intercanine width and upper interpremolar width (P<0.05), while this study didn't find any statistically significant differences between the two groups in upper intermolar width, lower intercanine width, lower interpremolar width, lower intermolar width.
Based on this study, we found that the measurements of upper dental arch width were smaller in skeletal anterior open bite patients, while the measurements of lower dental arch width were larger compared with normal vertical skeletal relationship patients.