牙列缺损在临床上常采用可摘局部义齿进行修复。在上颌牙列缺损的患者,修复后戴入局部义齿常伴有不同程度的语言功能障碍。但修复后引起患者下颌前伸的临床报导并不多见。我们在临床上曾遇到二例患者上颌局部义齿修复后引起下颌前伸。现报导如下: 例1,患者女,因缺失,在我科门诊行可摘局部义齿修复。患者戴入义齿后,出现明显的下颌前伸而复诊要求处理。检查:义齿固位良好,无早接触:患者讲话时可见明显的下颌前伸。去掉义齿后,上述症状消失。曾 Dentition defect is often clinically removable partial denture for repair. In patients with maxillary dentition defect, partial prosthesis wearing after repair often accompanied by varying degrees of language dysfunction. However, clinical reports of patient mandibular anterior extension are rare. We have encountered in clinical practice in two cases of maxillary partial dentures caused by mandibular protrusion. Are reported as follows: Example 1, the patient female, due to lack of removable partial denture repair in our clinic. Patients wearing dentures, there was significant mandibular advance and referral treatment. Check: denture retention is good, no early contact: the patient can pronounce obvious jaw extension. After removing the denture, the above symptoms disappear. Once