Penny R E, Kraal J H
J Prosthet Dent. 1979 Jul;42(1):34-8. doi: 10.1016/0022-3913(79)90327-5.
The definition of the crown-to-root ratio, its manifestation as a clinical problem, and associated problems were reviewed. Treatment possibilities were discussed in terms of plaque control, periodontal surgery, occlusal adjustment by selective grinding, splinting, restorative considerations, and extraction. The original guidelines for crown-to-root ratio in the selection of abutments were found to be exceptionally conservative and treatment limiting. New treatment modalities were considered in light of increased understanding of periodontal inflammation and its control. With inflammation controlled and with a carefully designed occlusion, some degree of mobility may be tolerated, thereby permitting the retention of teeth with minimal alveolar support.
回顾了冠根比的定义、其作为临床问题的表现以及相关问题。从菌斑控制、牙周手术、选择性调磨的咬合调整、夹板固定、修复考量和拔牙等方面讨论了治疗可能性。发现最初选择基牙时冠根比的指导原则异常保守且限制治疗。鉴于对牙周炎症及其控制有了更多了解，考虑了新的治疗方式。在炎症得到控制且咬合精心设计的情况下，一定程度的松动可能是可耐受的，从而允许保留牙槽骨支持最少的牙齿。
