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核心技术专利：CN118964589B侵权必究

核心技术专利：CN118964589B侵权必究

Chan K C, Hormati A A, Boyer D B

J Prosthet Dent. 1981 Feb;45(2):152-5. doi: 10.1016/0022-3913(81)90332-2.

Cement keys were an effective means of increasing the retention of complete cast gold crowns to preparations in extracted teeth. 2. Single grooves placed in either the dentin or in the crown alone were not effective in increasing retention in 30-degree crowns. In 7-degree crowns, a single groove in the crown gave better retention than a single groove in the dentin. 3. Crowns with a 7-degree taper had greater retentive strengths than 30-degree crowns treated identically. The retentive strength of 7-degree crowns with cement keys approached the tensile strength of zinc phosphate cement.

粘固键是增加完整铸造金冠与离体牙预备体固位力的有效方法。2. 仅在牙本质或仅在牙冠上制备单条沟，对增加30度牙冠的固位力无效。在7度牙冠中，牙冠上的单条沟比牙本质上的单条沟固位效果更好。3. 锥度为7度的牙冠比同样处理的30度牙冠具有更大的固位力。使用粘固键的7度牙冠的固位力接近磷酸锌粘固剂的拉伸强度。

Chan K C, Hormati A A, Boyer D B

J Prosthet Dent. 1981 Feb;45(2):152-5. doi: 10.1016/0022-3913(81)90332-2.

Cement keys were an effective means of increasing the retention of complete cast gold crowns to preparations in extracted teeth. 2. Single grooves placed in either the dentin or in the crown alone were not effective in increasing retention in 30-degree crowns. In 7-degree crowns, a single groove in the crown gave better retention than a single groove in the dentin. 3. Crowns with a 7-degree taper had greater retentive strengths than 30-degree crowns treated identically. The retentive strength of 7-degree crowns with cement keys approached the tensile strength of zinc phosphate cement.

粘固键是增加完整铸造金冠与离体牙预备体固位力的有效方法。2. 仅在牙本质或仅在牙冠上制备单条沟，对增加30度牙冠的固位力无效。在7度牙冠中，牙冠上的单条沟比牙本质上的单条沟固位效果更好。3. 锥度为7度的牙冠比同样处理的30度牙冠具有更大的固位力。使用粘固键的7度牙冠的固位力接近磷酸锌粘固剂的拉伸强度。