Investigation of periodontal status and bacterial composition aroundmini-implants.
Am J Orthod Dentofacial Orthop
; 164(1): 116-122, 2023 Jul.
Article
in En
| MEDLINE
| ID: mdl-36858877
INTRODUCTION: Mini-implants are now widely used in orthodontic treatment. Soft-tissue inflammation around the mini-implant is an important factor affecting its stability. This study aimed to investigate the periodontal status and the bacterial composition around mini-implants. METHODS: A total of 79 mini-implants in 40 patients (aged 18-45 years) were evaluated in this study. The mini-implant probing depth (mPD), mini-implant gingival sulcus bleeding index (mBI), mini-implant plaque index (mPLI), and the composition of the supragingival and subgingival plaque around the mini-implants were recorded. After Congo red staining, the bacteria were classified and counted under a light microscope. RESULTS: The mPLI and mBI around mini-implants in the infrazygomatic crest were higher than those in the buccal shelf and interradicular area. The mPD was higher on the coronal site of the mini-implant than on the mesial, distal, and apical sites in the infrazygomatic crest. The mPLI around the mini-implant was positively correlated with the mBI, and the mBI was positively correlated with the mPD. The supragingival and subgingival bacterial composition around the mini-implants was similar to that of natural teeth. Compared with supragingival bacterial composition, the subgingival bacteria of mini-implants had a significantly lower proportion of cocci and a higher proportion of bacilli and spirochetes. CONCLUSIONS: The bacteria composition of the plaque and the location are important factors in the inflammation around mini-implants. Similar to natural teeth, mini-implants require health maintenance to prevent inflammation of the surrounding soft tissue and maintain stability.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tooth
/
Dental Implants
/
Dental Plaque
Limits:
Humans
Language:
En
Journal:
Am J Orthod Dentofacial Orthop
Journal subject:
ODONTOLOGIA
/
ORTODONTIA
Year:
2023
Document type:
Article
Affiliation country:
China
Country of publication:
United States