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目的： 研究潜在性开牙合患者的颅颌结构特征。方法： 通过对１３ 例潜在性开牙合患者的治疗前 Ｘ线头颅侧位定位片的回顾性研究，与正常牙合者比较，找出其结构特征。结果：发现其中代表骨性结构特征的 Ｐ Ｐ Ｍ Ｐ角、 Ｓ Ｎ Ｍ Ｐ角增大显著， Ｕ Ｆ Ｈ／ Ｌ Ｆ Ｈ 值显著减小，而代表牙牙合 结构特点的 Ｏ Ｐ Ｍ Ｐ角减小，⊥⊥角增大，说明潜在性开牙合患者存在可在治疗前发现的骨性开牙合倾向，同时又存在着牙牙合代偿因素。结论：应尽量在潜在性开牙合患者的治疗前发现其骨性开牙合倾向，这将有助于制定正确的治疗计划，从而减少治疗过程中出现开牙合的可能性。
Objective: To study the craniofacial features of patients with potential open occlusion. Methods: A retrospective study of 13 cases of preoperative cataracts in 13 patients with potential occlusal anterior occlusion was performed to find out their structural features compared with those of normal occlusion. Results: It was found that P P M P, which represents the characteristics of bony structures, showed a significant increase in S N M P angle and significantly decreased U F H / L F H. O PM P angle decreases, ⊥ ⊥ angle increases, indicating the existence of latent occlusal occlusion in patients with preoperative occlusal tendon occlusal tendency, while there are compensatory factors of occlusal occlusion. CONCLUSIONS: Probability of osseous occlusal occlusion should be sought prior to treatment of potentially open patients, which will help to develop a proper treatment plan to reduce the likelihood of open occlusion during treatment.