Di Paolo R J, Philip C, Maganzini A L, Hirce J D
Am J Orthod. 1984 Dec;86(6):470-82. doi: 10.1016/s0002-9416(84)90353-1.
The integration of the diagnostic and treatment skills of both the orthodontist and the maxillofacial surgeon has become a standard procedure in the treatment of severe dentofacial dysplasias. Orthognathic surgery, surgery without prior tooth movement, is being replaced by an interdisciplinary approach as the treatment of choice. When a proper tooth-to-denture-base relationship is obtained, an ideal maxillomandibular relationship can be achieved surgically. The quadrilateral analysis enables the practitioner to obtain an individualized skeletal, dental, and soft-tissue assessment of each patient requiring treatment. It determines the direction and extent of the skeletal dysplasia in millimeter measurements and allows the clinician to outline the appropriate surgical orthodontic procedures. The quadrilateral analysis indicates that in a balanced facial pattern a 1:1 ratio exists between the maxillary bony base length (Max.Lth.) and the mandibular bony base length (Mand.Lth.); also that the average of the anterior lower facial height (ALFH) and the posterior lower facial height (PLFH) equals these bony base lengths. Simply stated, the Max.Lth. = Mand.Lth. = (formula; see text) An accurate diagnosis locates the area and quantifies the magnitude of skeletal dysplasia. Then the correct placement of a dentition within the denture bases and the appropriate surgery in the area of dysplasia can produce an individualized, balanced facial pattern.
正畸医生和颌面外科医生的诊断与治疗技能相结合，已成为治疗严重牙颌面发育异常的标准程序。正颌手术，即不进行术前牙齿移动的手术，正被一种多学科方法所取代，成为首选治疗方式。当获得合适的牙齿与义齿基托关系时，通过手术可实现理想的上下颌关系。四边形分析法能使从业者对每位需要治疗的患者进行个体化的骨骼、牙齿和软组织评估。它以毫米为单位确定骨骼发育异常的方向和程度，并让临床医生勾勒出合适的外科正畸程序。四边形分析法表明，在面部形态平衡的情况下，上颌骨基底部长度（Max.Lth.）与下颌骨基底部长度（Mand.Lth.）之比为1:1；而且前面部下颌高度（ALFH）与后面部下颌高度（PLFH）的平均值等于这些骨基底部长度。简而言之，Max.Lth. = Mand.Lth. =（公式；见正文）准确的诊断可确定骨骼发育异常的区域并量化其严重程度。然后，在义齿基托内正确排列牙列，并在发育异常区域进行适当的手术，就能形成个体化、平衡的面部形态。
