Drago Carl J
Department of Prosthodontics, Gundersen Lutheran Medical Center, La Crosse, Wisconsin 54601, USA.
Int J Oral Maxillofac Implants. 2003 Mar-Apr;18(2):273-8.
The purpose of this study was to record the effectiveness of Gold-Tite square abutment screws, tightened to 35 Ncm with a torque indicator, in maintaining a clinically stable implant/abutment connection.
The study consisted of 73 patients who were treated with 110 Osseotite implants. All patients were restored with either pre-machined titanium or customized UCLA hexed abutments. All abutments were fabricated per the Gold Standard ZR abutment design of Implant Innovations. All of the abutment screws were Gold-Tite square abutment screws. They were torqued to 35 Ncm with a torque indicator at the time of abutment connection. All crown restorations were cemented to the abutments. Patients were followed for at least 1 year post-occlusal loading.
Four patients with 6 implants were lost between the 6- and 12-month recall appointments. Clinical assessments of implant/restoration mobility were made by the author. One abutment screw was found to be loose at the 12-month recall appointment, representing a 99% survival rate.
These results add to the growing evidence that abutment screws with enhanced surfaces may provide increased screw/implant contact, higher rotational values, and calculated preload values.
The use of the Gold-Tite square abutment screws, torqued to 35 Ncm, maintained a stable implant/abutment connection that was successful in clinical practice for this minimal evaluation period.
本研究的目的是记录使用扭矩指示器拧紧至35 Ncm的Gold-Tite方形基台螺钉在维持临床上稳定的种植体/基台连接方面的有效性。
本研究包括73例接受110颗Osseotite种植体治疗的患者。所有患者均使用预加工钛基台或定制的UCLA六面体基台进行修复。所有基台均按照种植体创新公司的金标准ZR基台设计制作。所有基台螺钉均为Gold-Tite方形基台螺钉。在基台连接时使用扭矩指示器将其扭矩拧紧至35 Ncm。所有冠修复体均粘结到基台上。患者在咬合加载后至少随访1年。
在6个月至12个月的复查预约期间，有4例患者的6颗种植体丢失。作者对种植体/修复体的活动度进行了临床评估。在12个月的复查预约时发现1颗基台螺钉松动，存活率为99%。
这些结果进一步证明，表面经过改良的基台螺钉可能会增加螺钉/种植体的接触、提高旋转值和计算出的预紧力值。
使用扭矩拧紧至35 Ncm的Gold-Tite方形基台螺钉，在这个最短评估期内，维持了临床实践中成功的稳定种植体/基台连接。
