In Vivo Plaque Count of Streptococcus Mutans around Orthodontic Brackets Bonded with Two Different Adhesives

2014 ◽  
Vol 26 (4) ◽  
pp. 175-179
Author(s):  
Munad J. Al-Duliamy
Keyword(s):  
Streptococcus Mutans ◽  
Orthodontic Brackets ◽  
Plaque Count

scholarly journals Accuracy of intraoral scan images in full arch with orthodontic brackets: a retrospective in vivo study

2021 ◽  
Author(s):  
Young-Kyun Kim ◽  
So-Hyun Kim ◽  
Tae-Hyun Choi ◽  
Edwin H. Yen ◽  
Bingshuang Zou ◽  
...  
Keyword(s):  
Orthodontic Brackets ◽  
Digital Impression ◽  
Orthodontic Bracket ◽  
Average Surface ◽  
Mandibular Arch ◽  
Surface Errors ◽  
Digital Impressions ◽  
Surface Deviations ◽  
Orthodontic Patients

Abstract Objectives The purpose of this retrospective study was to evaluate the accuracy of intraoral scan (IOS) images in the maxillary and mandibular arches with orthodontic brackets. Material and methods From digital impressions of 140 patients who underwent orthodontic treatment, consecutive IOS images were selected based on standardized inclusion criteria: Two pre-orthodontic IOS images (IOS1 and IOS2) of permanent dentition with fully erupted second molars and IOS images obtained immediately after orthodontic bracket bonding (IOSb). Superimpositions were performed to evaluate the reproducibility of repeated IOS images. Accuracy of IOSb images was analyzed by comparing the average surface errors between IOS1c and IOS2c images, which were IOS images cut based on the same region of the interest as between IOS1 and IOSb images. Results A total of 84 IOS images was analyzed. The average surface errors between IOS1 and IOS2 images were 57 ± 8 μm and 59 ± 14 μm in the maxillary and mandibular arch, respectively, and their reliability was almost perfect. The average errors between IOSb and IOS1c images exhibited an increase, which measured 97 ± 28 μm in the maxillary arch and 95 ± 29 μm in the mandibular arch. These surface deviations between IOSb and IOS1c images were significantly larger in each region as well as entire dentition (P < 0.001) compared to those between IOS1c and IOS2c images. Conclusions The average surface errors of the scans with brackets showed increased values compared with those without brackets. This suggests that orthodontic brackets could affect the trueness of intraoral scan images. Clinical relevance It is necessary for clinicians to consider the effect of brackets on digital impression when using IOS images in orthodontic patients.

scholarly journals Function-adaptive clustered nanoparticles reverse Streptococcus mutans dental biofilm and maintain microbiota balance

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Fatemeh Ostadhossein ◽  
Parikshit Moitra ◽  
Esra Altun ◽  
Debapriya Dutta ◽  
Dinabandhu Sar ◽  
...  
Keyword(s):  
Streptococcus Mutans ◽  
Ex Vivo ◽  
Bacterial Species ◽  
Reactive Oxygen Species Generation ◽  
Biofilm Inhibition ◽  
16S Rrna Analysis ◽  
Dental Biofilm ◽  
Dental Plaques

AbstractDental plaques are biofilms that cause dental caries by demineralization with acidogenic bacteria. These bacteria reside inside a protective sheath which makes any curative treatment challenging. We propose an antibiotic-free strategy to disrupt the biofilm by engineered clustered carbon dot nanoparticles that function in the acidic environment of the biofilms. In vitro and ex vivo studies on the mature biofilms of Streptococcus mutans revealed >90% biofilm inhibition associated with the contact-mediated interaction of nanoparticles with the bacterial membrane, excessive reactive oxygen species generation, and DNA fragmentation. An in vivo examination showed that these nanoparticles could effectively suppress the growth of S. mutans. Importantly, 16S rRNA analysis of the dental microbiota showed that the diversity and richness of bacterial species did not substantially change with nanoparticle treatment. Overall, this study presents a safe and effective approach to decrease the dental biofilm formation without disrupting the ecological balance of the oral cavity.

Calcium fluoride nanoparticles induced suppression of Streptococcus mutans biofilm: an in vitro and in vivo approach

2015 ◽  
Vol 100 (4) ◽  
pp. 1901-1914 ◽  
Author(s):  
Shatavari Kulshrestha ◽  
Shakir Khan ◽  
Sadaf Hasan ◽  
M. Ehtisham Khan ◽  
Lama Misba ◽  
...  
Keyword(s):  
Streptococcus Mutans ◽  
Calcium Fluoride ◽  
Fluoride Nanoparticles

scholarly journals Effect of Two Different Mouth Rinses on S. mutans Counts in Subjects Undergoing Orthodontic Treatment – A Pilot Study

2020 ◽  
pp. 148-155
Author(s):  
S. Abirami ◽  
Ravindra Kumar Jain ◽  
A. S. Smiline Girija
Keyword(s):  
Streptococcus Mutans ◽  
Reference Group ◽  
T Test ◽  
Orthodontic Brackets ◽  
Plaque Index ◽  
Cervical Region ◽  
Paired Sample ◽  
Group I ◽  
Significant Difference ◽  
Group Ii

The study is thus aimed to assess and compare the efficacy of Herbostra oil pulling mouthwash with Chlorhexidine mouthwash in reducing plaque accumulation around orthodontic brackets. A total of 20 patients were considered in this study randomly assigned into Group I (experimental group - Herbostra oil pulling mouthwash) and Group II (reference group-0.2% Chlorhexidine mouthwash). The plaque index scores were recorded in each individual at baseline (pre) and after 3 weeks (post). Dental plaque samples were collected around the orthodontic brackets at the cervical region of maxillary upper molars and lower incisors by cotton swabbing method and evaluated for the presence of microflora. Paired sample t-test for Streptococcus mutans count showed that statistically significant difference only within the group II (p=0.000) (Chlorhexidine group) and there was no significant difference within the group I (p=0.103) (Herbostra group). Paired sample t-test for plaque index score shows statistically significant difference within the groups (0.000).Independent t test showed statistically significant difference in the levels of  Streptococcus mutans count after 3 weeks between the two groups (p=0.000) with the mean values of (2.230±0.5056), (1.080±0.3458) in group I and group II respectively. From this study we concluded that, even though there was a reduction in plaque scores and S. mutans count with Herbostra oil pulling mouthwash but it was not as effective as Chlorhexidine mouth rinse.

Antibacterial Activity and Anti-Biofilm Effect of Chitosan against Strains of Streptococcus Mutans Isolated in Dental Plaque

2008 ◽  
Vol 21 (4) ◽  
pp. 993-997 ◽  
Author(s):  
G. Pasquantonio ◽  
C. Greco ◽  
M. Prenna ◽  
C. Ripa ◽  
L.A. Vitali ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Streptococcus Mutans ◽  
Dental Plaque ◽  
Chitosan Solution ◽  
Positive Control ◽  
Phases Of Development ◽  
Adhesion Phase ◽  
Adult Volunteers

Streptococcus mutans is the major cause of dental plaque and is often associated with biofilm formation. The aim of this study is to evaluate the activity of a hydrosoluble derivative of chitosan against S. mutans biofilms in vitro and in vivo. Strains of S. mutans were isolated from the dental plaque of 84 patients enrolled in the study. The antibacterial activity of chitosan was determined by broth microdilutions. The effect of chitosan at different concentrations and exposure times on S. mutans biofilms at different phases of development was assessed by a clinical study using the classical “4-day plaque regrowth” experiment in adult volunteers. The MIC values of chitosan were between 0.5 and 2 g/L. Compared to distilled water, the chitosan solution significantly decreased the vitality of plaque microflora (p≤0.05). Chlorhexidine, used as a positive control, reduced vitality even further. The results showed that S. mutans in the adhesion phase (4 h) was completely inhibited by chitosan at any concentration (0.1, 0.2, 0.5XMIC) or exposure time investigated (1, 15, 30, 60 min), while S. mutans at successive stages of accumulation (12–24 h) was inhibited only by higher concentrations and longer exposure times. These data confirm the effective action of chitosan against S. mutans biofilms.

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