Bacchiocchi Danilo, Guida Andrea
Private Practice, Castelfidardo, 60022 Ancona, Italy.
Fundacao Universitaria Vida Crista (FUNVIC), 12400-010 Pindamonhangaba, SP, Brazil.
Int J Dent. 2017;2017:2679085. doi: 10.1155/2017/2679085. Epub 2017 Aug 1.
To present a new intraoral welding technique, which can be used to manufacture screw-retained, mandibular fixed full-arch prostheses.
Over a 4-year period, all patients with complete mandibular edentulism or irreparably compromised mandibular dentition, who will restore the masticatory function with a fixed mandibular prosthesis, were considered for inclusion in this study. The "Ball Welding Bar" (BWB) technique is characterised by smooth prosthetic cylinders, interconnected by means of titanium bars which are adjustable in terms of distance from ball terminals and are inserted in the rotating rings of the cylinders. All the components are welded and self-posing.
Forty-two patients (18 males; 24 females; mean age 64.2 ± 6.7 years) were enrolled and 210 fixtures were inserted to support 42 mandibular screw-retained, fixed full-arch prostheses. After two years of loading, 2 fixtures were lost, for an implant survival rate of 97.7%. Five implants suffered from peri-implant mucositis and 3 implants for peri-implantitis. Three of the prostheses (3/42) required repair for fracture (7.1%): the prosthetic success was 92.9%.
The BWB technique seems to represent a reliable technique for the fabrication of screw-retained mandibular fixed full-arch prostheses. This study was registered in the ISRCTN register with number ISRCTN71229338.
介绍一种新的口内焊接技术，该技术可用于制造螺丝固位的下颌固定全牙弓修复体。
在4年的时间里，所有下颌牙列缺失或下颌牙列严重受损且将通过下颌固定修复体恢复咀嚼功能的患者均被纳入本研究。“球焊接杆”（BWB）技术的特点是假体圆柱体表面光滑，通过钛杆相互连接，钛杆与球端的距离可调，并插入圆柱体的旋转环中。所有组件均焊接且能自行就位。
共纳入42例患者（男性18例；女性24例；平均年龄64.2±6.7岁），植入210颗种植体以支持42个下颌螺丝固位的固定全牙弓修复体。加载两年后，2颗种植体丢失，种植体存留率为97.7%。5颗种植体发生种植体周围黏膜炎，3颗种植体发生种植体周围炎。3个修复体（3/42）因骨折需要修复（7.1%）：修复成功率为92.9%。
BWB技术似乎是一种可靠的制造螺丝固位下颌固定全牙弓修复体的技术。本研究已在ISRCTN注册机构注册，注册号为ISRCTN71229338。
