Jaija Abdullah M Zakria, El-Beialy Amr Ragab, Mostafa Yehya A
Private Practice, P.O. Box 376385, Riyadh 11335, Saudi Arabia.
Department of Orthodontics and Dentofacial Orthopedics, Faculty of Oral and Dental Medicine, Cairo University, 11 El-Saraya Street, Manial, Cairo 12511, Egypt; MOrth Programs at Cairo University and Future University, Cairo, Egypt.
Scientifica (Cairo). 2016;2016:5607594. doi: 10.1155/2016/5607594. Epub 2016 Apr 13.
Aim. The aim of this study is to analyze the etiological factors underlying the presence of maxillary midline diastema in a sample of orthodontic patients. Materials and Methods. One hundred patients who fulfill the inclusion criteria were selected from 1355 patients seeking orthodontic treatment. The pretreatment orthodontic records were analyzed. The width of the maxillary midline diastema was measured clinically with a digital caliper at two levels: the mesioincisal angles of the central incisors and five millimeters from the incisal edge. The two measurements were averaged, and patients with diastema of more than 0.5 millimeter in width were enrolled. Results. Diastema is a multifactorial clinical finding with more than one underlying etiological cause. The interrelationship between the familial pattern of midline diastema and the microdontia, macroglossia, labial frenum, and alveolar cleft conforms was clear. The effect of a mesiodens and the upper lateral incisor whether bilaterally missing, unerupted, or peg shaped was minimal. Conclusion. Etiological factors underlying maxillary midline diastema are interconnected. Using a checklist as a guide during handling maxillary midline diastema is important in the different stages of treatment.
目的。本研究旨在分析正畸患者样本中上颌中线间隙存在的潜在病因。材料与方法。从1355名寻求正畸治疗的患者中选取了100名符合纳入标准的患者。对正畸治疗前的记录进行分析。使用数字卡尺在两个水平临床上测量上颌中线间隙的宽度：中切牙的近中切角处以及距切缘5毫米处。将这两个测量值取平均值，纳入宽度超过0.5毫米间隙的患者。结果。间隙是一种具有多种潜在病因的多因素临床发现。中线间隙的家族模式与过小牙、巨舌症、唇系带和牙槽裂形态之间的相互关系很明显。多生牙以及上颌侧切牙双侧缺失、未萌出或呈钉状的影响极小。结论。上颌中线间隙的潜在病因相互关联。在治疗的不同阶段，使用检查表作为处理上颌中线间隙的指导很重要。
