DʼErcole Simonetta, Tripodi Domenico, Ravera Lorenzo, Perrotti Vittoria, Piattelli Adriano, Iezzi Giovanna
*Research Fellow, Department of Experimental and Clinical Sciences, Dental School, University of Chieti-Pescara, Chieti, Italy. †Professor of Pediatric Dentistry, Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, Chieti, Italy. ‡Private Practice, Turin, Italy. §Research Fellow, Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, Chieti, Italy. ‖Professor of Oral Pathology, Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, Chieti, Italy. ¶Researcher, Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, Chieti, Italy.
Implant Dent. 2014 Apr;23(2):175-9. doi: 10.1097/ID.0000000000000044.
The aim of this study was to assess whether there was a decrease of bacterial leakage with increasing torque values in conical Morse Cone connection implants.
A total of 30 Morse Cone conical tapered implants (10 implants per group) were used in this study. The abutments were connected to the implants with 20 N (group 1), 30 N (group 2), and 40 N (group 3) insertion torque values. The inner parts of 5 implants, per group, were inoculated with Pseudomonas aeruginosa suspension and the remaining 5 implants, per group, with Aggregatibacter actinomycetemcomitans. The penetration of bacteria into the surrounding solution was determined by the observation of turbidity of the broth.
In groups 1 and 2, bacterial contamination was found in 2 of the 10 implants, only in the specimens seeded with P. aeruginosa. In group 3, no contaminated samples were found.
This study demonstrated that with increased insertion torque values in Morse Cone connection, the bacterial leakage is reduced.
本研究旨在评估在锥形莫氏锥度连接种植体中，随着扭矩值增加细菌渗漏是否会减少。
本研究共使用30个莫氏锥度锥形种植体（每组10个种植体）。基台以20 N（第1组）、30 N（第2组）和40 N（第3组）的插入扭矩值与种植体连接。每组5个种植体的内部接种铜绿假单胞菌悬液，每组其余5个种植体接种伴放线聚集杆菌。通过观察肉汤的浑浊度来确定细菌向周围溶液的渗透情况。
在第1组和第2组中，10个种植体中有2个发现细菌污染，且仅在接种铜绿假单胞菌的标本中。在第3组中，未发现受污染的样本。
本研究表明，在莫氏锥度连接中，随着插入扭矩值的增加，细菌渗漏减少。
