Microflora associated with successful and failed orthodontic mini-implants

作者：Apel Stephanie; Apel Christian; Morea Camillo; Tortamano Andre; Dominguez Gladys Cristina; Conrads Georg^*

来源：Clinical Oral Implants Research, 2009, 20(11): 1186-1190.

DOI：10.1111/j.1600-0501.2009.01756.x

• microarray
• orthodontic mini-implants
• peri-implantitis
• RTQ-PCR

Objectives
Mini-implants are used for orthodontic bone anchorage. The reasons for a potential instability or loss of the mini-implants during treatment are multiple. Among other factors, colonization of implants with pathogenic bacteria is discussed. Therefore, the microflora associated with successful and failed mini-implants has been screened.
Material and methods
A total of 76 mini-implants collected from 25 patients were observed during regular orthodontic treatment. Bacterial samples of eight failed and - exemplarily - four successful (control) cases were subjected to a universal Bacteria-directed real-time quantitative polymerase chain reaction for quantification in combination with a microarray-based identification of 20 selected species.
Results
The failure rate in the present investigation was 10.5%. The bacterial analysis did not reveal any major difference in the total amount or species composition between control and failed mini-implants. However, Actinomyces viscosus was found in four (100%) and Campylobacter gracilis in three (75%) stable controls, whereas both species were rarely found (12.5%) in failed implants.
Conclusions
In the present study, the peri-implant sulcus surrounding failed orthodontic mini-implants did not show a specific aggressive bacterial flora.
To cite this article:Apel S, Apel C, Morea C, Tortamano A, Dominguez, GC, Conrads G. Microflora associated with successful and failed orthodontic mini-implants.Clin. Oral Impl. Res. 20, 2009; 1186-1190.doi: 10.1111/j.1600-0501.2009.01756.x.

• 出版日期2009-11