Brandt Silvia, Lauer Hans-Christoph, Fehrenz Michael, Güth Jan-Frederik, Romanos Georgios, Winter Anna
Department of Prosthodontics, Goethe University Frankfurt, Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany.
Private Practice B2V Dr. Brandt and Colleagues, 61118 Bad Vilbel, Germany.
Materials (Basel). 2021 Feb 23;14(4):1051. doi: 10.3390/ma14041051.
Locator and ball attachments are well-established systems to attach overdentures to two inter-foraminal implants. This study aimed to evaluate differences between the two systems regarding prosthetic maintenance and patients' oral-health-related quality of life (OHRQoL). Dental records of patients with a mandibular implant-retained overdenture were retrospectively analyzed. Prosthetic maintenance measures involving the denture suprastructure and attachment matrix and patrix were analyzed. Furthermore, the Oral Health Impact Profile-G14 (OHIP-G14) was used to evaluate OHRQoL. Results were analyzed by means of Kaplan-Meier analysis and Student's - and log-rank tests. The records of 122 patients were evaluated. Kaplan-Meier survival analysis revealed a significant difference between ball attachments (Group B; patients = 47) and Locator attachments (Group L; patients = 75) regarding the occurrence of denture fractures ( < 0.001) and events affecting the matrix ( = 0.028) and patrix ( = 0.030). Group L had a significantly lower total OHIP-G14 score than Group B ( = 0.002). The most common maintenance events were matrix-related and denture relining for both attachment systems. Group B required more maintenance measures than Group L. Moreover, patients in Group L had better OHRQoL than patients in Group B.
定位器和球帽附着体是将覆盖义齿附着于两个孔间种植体的成熟系统。本研究旨在评估这两种系统在修复体维护和患者口腔健康相关生活质量（OHRQoL）方面的差异。对下颌种植体支持的覆盖义齿患者的牙科记录进行回顾性分析。分析了涉及义齿上部结构以及附着体阴型和阳型的修复体维护措施。此外，使用口腔健康影响程度量表 - G14（OHIP - G14）来评估OHRQoL。通过Kaplan - Meier分析以及Student's检验和对数秩检验对结果进行分析。对122例患者的记录进行了评估。Kaplan - Meier生存分析显示，在义齿骨折发生率（P < 0.001）以及影响阴型（P = 0.028）和阳型（P = 0.030）的事件方面，球帽附着体组（B组；患者 = 47例）和定位器附着体组（L组；患者 = 75例）之间存在显著差异。L组的OHIP - G14总分显著低于B组（P = 0.002）。对于两种附着系统，最常见的维护事件均与阴型相关以及义齿重衬。B组比L组需要更多的维护措施。此外，L组患者的OHRQoL优于B组患者。
