TY  - JOUR
A1  - Brandt, Silvia
A1  - Lauer, Hans-Christoph
A1  - Fehrenz, Michael
A1  - Güth, Jan-Frederik
A1  - Romanos, Georgios
A1  - Winter, Anna
T1  - Ball versus Locator\(^®\) attachments: a retrospective study on prosthetic maintenance and effect on oral-health-related quality of life
JF  - Materials
N2  - 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 t- and log-rank tests. The records of 122 patients were evaluated. Kaplan–Meier survival analysis revealed a significant difference between ball attachments (Group B; n patients = 47) and Locator\(^®\) attachments (Group L; n patients = 75) regarding the occurrence of denture fractures (p < 0.001) and events affecting the matrix (p = 0.028) and patrix (p = 0.030). Group L had a significantly lower total OHIP-G14 score than Group B (p = 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.
KW  - attachment
KW  - ball
KW  - locator
KW  - overdenture
KW  - OHRQoL
KW  - OHIP-G14
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-228909
SN  - 1996-1944
VL  - 14
IS  - 4
ER  -