Effects of soy and bovine milk beverages on enamel mineral content in a randomized, double-blind in situ clinical study

2019 ◽  
Vol 88 ◽  
pp. 103160 ◽  
Author(s):  
Peiyan Shen ◽  
Glenn D. Walker ◽  
Yi Yuan ◽  
Coralie Reynolds ◽  
David P. Stanton ◽  
...  
Keyword(s):  
Clinical Study ◽  
Mineral Content ◽  
Bovine Milk ◽  
Double Blind

An in situ Enamel Section Model for Assessment of Enamel Re/Demineralization Potential

1992 ◽  
Vol 71 (3_suppl) ◽  
pp. 856-859 ◽  
Author(s):  
K.W. Stephen ◽  
F.A. Damato ◽  
R. Strang
Keyword(s):  
Clinical Trial ◽  
Mineral Content ◽  
Clinical Trial Data ◽  
Oral Appliance ◽  
Lesion Size ◽  
Trial Data ◽  
Double Blind ◽  
Initial Validation ◽  
Section Model

An enamel-section-carrying intra-oral appliance to predict the results of double-blind anti-caries studies has been developed. Initial validation was against the F concentration effect attained in a clinical trial where three sodium monofluorophosphate (SMFP) dentifrices were used. Original appliance-based work showed significant differences in remineralization between non-F and F dentifrices, but not between different F dentifrices. However, it was shown later that acidified gel-prepared lesions were not as responsive as solution-prepared lesions to de- and remineralizing processes, and lesion remineralization rates were found to be dependent on initial lesion size. An in situ cross-over study was then repeated with use of acid-solution-created lesions, and seven volunteers completed the project. Each brushed twice daily × 2 min with either 0,1000, or 2500 ppm F, as SMFP dentifrice. After a two-week wash-out, subjects wore the appliances for four weeks. Enamel mineral content was assessed at 0, two, and four weeks via microradiography/microdensitometry, and a statistically significant dose-response was obtained between non-F and F as well as between 1000 and 2500 ppm F pastes, i.e., as per the three-year clinical trial data. Hence, the model's suitability for pre-clinical screening was confirmed. It has also been used in caries microbiological studies, in root caries investigations, and currently in chewing gum cariogenicity experiments.

Gum Containing Calcium Fluoride Reinforces Enamel Subsurface Lesions in situ

2012 ◽  
Vol 91 (4) ◽  
pp. 370-375 ◽  
Author(s):  
Y. Kitasako ◽  
A. Sadr ◽  
H. Hamba ◽  
M. Ikeda ◽  
J. Tagami
Keyword(s):  
Mineral Content ◽  
Secondary Ion Mass Spectrometry ◽  
Fluoride Ion ◽  
Superficial Zone ◽  
Double Blind ◽  
Cross Sectional ◽  
Tof Sims ◽  
Chewing Gums ◽  
Bovine Enamel

The aim of this study was to assess the effect of chewing gum containing phosphoryl oligosaccharides of calcium (POs-Ca) and a low concentration of fluoride (F) on the hardness of enamel subsurface lesions, utilizing a double-blind, randomized, and controlled in situ model. Fifteen individuals wore removable lingual appliances with 3 bovine-enamel insets containing subsurface demineralized lesions. Three times a day for 14 days, they chewed one of the 3 chewing gums (placebo, POs-Ca, POs-Ca+F). After the treatment period, cross-sectional mineral content, nanoindentation hardness, and fluoride ion mapping by time-of-flight secondary ion mass spectrometry (TOF-SIMS) were evaluated. Although there were no statistical differences in overall mineral content and hardness recovery rates between POs-Ca and POs-Ca+F subsurface lesions (p > 0.05), nanoindentation at 1-μm distance increments from the surface showed statistical differences in hardness recovery rate between POs-Ca and POs-Ca+F in the superficial 20-μm region (p < 0.05). Fluoride mapping revealed distribution of the ion up to 20 μm from the surface in the POs-Ca+F group. Nanoindentation and TOF-SIMS results highlighted the benefits of bioavailability of fluoride ion on reinforcement of the superficial zone of subsurface lesions in situ (NCT01377493).

Increased remineralization of tooth enamel by milk containing added casein phosphopeptide-amorphous calcium phosphate

2006 ◽  
Vol 73 (1) ◽  
pp. 74-78 ◽  
Author(s):  
Glenn Walker ◽  
Fan Cai ◽  
Peiyan Shen ◽  
Coralie Reynolds ◽  
Brent Ward ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Amorphous Calcium Phosphate ◽  
Tooth Enamel ◽  
Bovine Milk ◽  
Double Blind ◽  
Milk Samples ◽  
Randomized Clinical Study ◽  
Casein Phosphopeptide ◽  
Control Milk

Casein phosphopeptide amorphous calcium phosphate nanocomplexes (CPP-ACP) in chewing gum, lozenges and mouthrinses have been shown to remineralize enamel subsurface lesions in human in situ experiments. The aim of this double-blind, randomized clinical study was to investigate the capacity of CPP-ACP added to bovine milk to remineralize enamel subsurface lesions in situ. Ten subjects drank milk containing either 2·0 or 5·0 g CPP-ACP/l or a control milk whilst wearing removable appliances with enamel slabs containing subsurface demineralized lesions. Each 200 ml milk sample was consumed once a day for each weekday over three consecutive weeks. After each treatment and one weeks rest the subjects crossed over to the other treatments. At the completion of the treatments the enamel slabs were removed and remineralization determined using microradiography and microdensitometry. The results demonstrated that all three milk samples remineralized enamel subsurface lesions. However, the milk samples containing CPP-ACP produced significantly greater remineralization than the control milk. The remineralising effect of CPP-ACP in milk was dose-dependent with 2·0 and 5·0 g CPP-ACP/l producing an increase in mineral content of 70 and 148%, respectively, relative to the control milk. The differences in remineralization following exposure to the three milk samples were all statistically significant (P<0·001). In conclusion, this study shows that the addition of 2·0–5·0 g CPP-ACP/l to milk substantially increases its ability to remineralize enamel subsurface lesions.

scholarly journals Efficacy and Safety of Azelaic Acid Nanocrystal-Loaded In Situ Hydrogel in the Treatment of Acne Vulgaris

Pharmaceutics ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 567
Author(s):  
Ivona Tomić ◽  
Sandra Miočić ◽  
Ivan Pepić ◽  
Dubravka Šimić ◽  
Jelena Filipović-Grčić
Keyword(s):  
Azelaic Acid ◽  
Controlled Trial ◽  
Acne Vulgaris ◽  
Topical Therapy ◽  
Adverse Event Rate ◽  
Double Blind ◽  
Inflammatory Lesions ◽  
First Choice ◽  
In Situ Hydrogel

Acne vulgaris is a common, multifactorial, inflammatory skin disease affecting the pilosebaceous unit. Topical therapy is the first choice in the treatment of mild to moderate acne, and azelaic acid (AZA) is one of the most commonly used drugs. The aim of this study was to evaluate the safety and efficacy of a low-dose azelaic acid nanocrystal (AZA-NC) hydrogel in the treatment of mild to moderate facial acne. The study was designed as a double-blind, randomized controlled trial. Patients were randomized to treatment with AZA-NC hydrogel, 10%, or AZA cream, 20%, administered in quantities of approximately 1 g twice daily for 8 weeks. Efficacy of therapy was measured by the number of lesions and safety by the frequency and severity of adverse events. At week 8, the success rate of treatment with AZA-NC hydrogel, 10%, was 36.51% (p < 0.001) versus 30.37% (p < 0.001) with AZA cream. At week 8, treatment with AZA-NC hydrogel, 10%, resulted in a significant reduction in total inflammatory lesions from baseline of 39.15% (p < 0.001) versus 33.76% (p < 0.001) with AZA cream, and a reduction in non-inflammatory lesions from baseline of 34.58% (p < 0.001) versus 27.96% (p < 0.001) with AZA cream, respectively. The adverse event rate was low and mostly mild.

Sign in / Sign up

Export Citation Format

Share Document