抄録
Purpose: The prosthetic methods for implantation, 1. connection method of implant and natural teeth abutments and 2. independent method-using implant abutment only, are thought to be determined by various conditions of the defective part in general-use implant types. We researched statisticaly SUMICIKON's and Bonefit's PERIO TEST data on effectiveness of connection to natural teeth.
Method: We measured (average and standard deviation) from just after operation to 600 days after implantation. And we measured natural molar teeth which were used as controls.
Result: 1. natural teeth: 6.93 (n=132 persons × 4 type teeth × 4 blocks=2112, S.D.=0.87) 1) first premolar: 5.83, 2) second premolar: 7.06, 3)first molar: 5.92, 4)second molar: 8.93
2. Implant (n=247): 1)SUMICIKON:6.00 (n=42, S.D.=0.94), 2)Bonefit: 0.36 (n=205, S.D.=0.66)
Consideration:1. Natural teeth connecting bone growth and implant bone growth conditions and 2. adjacent and antagonistic teeth conditions are thought to be most important for Perio Test values related to connection and independent methods for natural teeth. This time we took 1. into consideration.
In case 2 molars are defected in blade-type implant, Bonefit prosthetic method for wide clinical application is generally the method for premolar 2-abutment. The desirable connection is thought to be an implant abutment of Perio Test value of 5.83＜X＜8.93, if the ideal Perio Test value of the implant abutment is X, from the result of natural teeth.
Conclusion: If Perio Test values are limited, 1. SUMICIKON is the optimum implant for the natural teeth-connecting prosthetic method while the stress concentration of the implant neck section is dangerous in natural teeth connection of 2. Bonefit.
