Open AccessMicrobiological evaluation of LOCATOR® Legacy attachments: A cross‐sectional clinical study
Author(s) -
Nagy Ursina,
Guédat Christophe,
Giannopoulou Catherine,
Schimmel Martin,
Müller Frauke,
Srinivasan Murali
Publication year - 2019
Publication title -
clinical and experimental dental research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.464
H-Index - 9
ISSN - 2057-4347
DOI - 10.1002/cre2.209
Subject(s) - treponema denticola , mcnemar's test , tannerella forsythia , aggregatibacter actinomycetemcomitans , prevotella intermedia , medicine , dentistry , porphyromonas gingivalis , periodontitis , pathology , mathematics , alternative medicine , traditional chinese medicine , honeysuckle , statistics
Objective This retrospective cross‐sectional study aimed to evaluate quantitatively the oral microbiome in the tri‐lobe central cavity of Locator Legacy attachment and verify whether it harbors a different, potentially more pathogenic, bacterial spectrum than the adjacent edentulous ridge. Materials and Methods Edentulous patients rehabilitated with implant overdentures using Locator Legacy attachments were recruited for this study. The clinical examination comprised probing depths, mobility, peri‐implant, and periodontal health along with intraoral swabs for microbiological evaluation, polymerase chain reaction (PCR) testing, and candida culture. The swabs were collected from the trilobed cavity of the attachment and the adjacent edentulous ridge. PCR was performed to detect six specific bacteria, Porphyromonas gingivalis , Aggregatibacter actinomycetemcomitans , Tannerella forsythia , Treponema denticola , Prevotella intermedia , and Parvimonas micra . Statistical analyses were performed using McNemar's test and Wilcoxon's rank sum test with the significance set to p < .05. Results A total of 50 participants with a mean age of 71.5 ± 9.6 years participated in the study. No significant differences in the microbiome were found between samples from the ridge and the attachment. No significantly different numbers in the candida cultures were identified, and the presence of a removable prostheses did not demonstrate a significant association with the prevalence of candida. Conclusions Within the limits of this study and the investigated bacterial species, the trilobed cavity of the attachment does not seem to increase the bacterial load.