Evaluation of the Occluding Characteristics of Nanosized Eggshell/Titanium Dioxide with or without Saliva

Abstract Objectives The study reports on the effectiveness of a ball-milled nanosized titanium dioxide composite (EB@TiO2) for DH management in comparison with commercial desensitizing paste with and without saliva. Materials and Methods Forty-nine dentine specimens were prepared from extracted bovine anterior teeth. Twenty-one of the specimens were brushed with three desensitizing toothpaste for 7 days, namely: Group 1; EB@TiO2, Group 2; Colgate Pro-relief; and Group 3; Sensodyne repair (n = 7). Twenty-four specimens were brushed with the toothpaste for 7 days and stored in artificial saliva (control) after brushing. Each specimen was subsequently posttreated in citric acid solution to test its stability in acidic condition. Field scanning electron microscope was used to evaluate the effectiveness of the dentine tubules occlusion. The biocompatibility of the composite was tested using BHK21 cell line. Statistical Analysis One-way analysis of variance was used to analyze the percentage occluded area ratio values for all specimens (α = 0.05). Independent t-test was further used to evaluate the occlusion differences with saliva and without saliva. Results and Conclusions The number of dentine tubules decreased significantly after 7 days of brushing. Overall, the occlusion observe for EB@TiO2 were significantly better than for Colgate Pro-relief and Sensodyne repair (p < 0.05). BHK21 assay suggested that composite had no significant effect on the BHK21 cell line. This study demonstrated that the composite effectively occluded open dentine tubules within 7 days of brushing.

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Coronal Microleakage Assessed by Polymicrobial Markers

The Journal of Contemporary Dental Practice ◽

10.5005/jcdp-4-3-1 ◽

2003 ◽

Vol 4 (3) ◽

pp. 1-10 ◽

Cited By ~ 8

Author(s):

Leandro Rodrigues Britto ◽

Nicholas J. Grimaudo ◽

Frank J. Vertucci

Keyword(s):

Artificial Saliva ◽

Statistical Significance ◽

Onset Time ◽

Endodontically Treated Teeth ◽

Root Canals ◽

Gutta Percha ◽

Anterior Teeth ◽

Bacterial Migration ◽

Group 2 ◽

Negative Controls

Abstract Studies have shown significant bacterial leakage following exposure of sealed root canals to artificial and natural saliva. The objective of this study was to determine contamination via bacterial migration in artificial saliva in endodontically treated teeth using different obturation techniques and sealers. A total of 144 extracted, human mandibular anterior teeth were cleaned and shaped to a #40 master apical file using hand and rotary instrumentation. One hundred and twenty teeth were divided into two experimental groups. The teeth in Group 1 were obturated with gutta-percha using lateral compaction and five different sealers, and the teeth in Group 2 were obturated with gutta-percha using thermomechanical compaction and five different sealers. The remaining 24 teeth were prepared as positive and negative controls. All specimens, except the negative controls, were inoculated every five days with Anaerobic streptococci (NCTC 9891) related to Peptostreptococcus micros and Prevotella intermedia (ATCC 25611). The contamination onset time was continuously recorded and turbid broths cultured for bacteria identification. The controls behaved as expected. Regardless of the combination between obturation techniques and different sealers, all broths became turbid during this experiment. The correlation between the obturation techniques and the sealers revealed statistical significance using ANOVA (p<0.0001), followed by the Duncan Multiple Range Test, which determined the ranking between these interactions. The combination of MicroSeal obturation technique with Ketac-Endo sealer allowed a slower rate of coronal-apical bacterial migration. Citation Leandro Rodrigues Britto LR, Grimaudo NJ, Vertucci FJ. Coronal Microleakage Assessed by Polymicrobial Markers. J Contemp Dent Pract 2003 August;(4)3:001-010.

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AN INVITRO COMPARATIVE EVALUATION OF FRACTURE RESISTANCE OF ENDODONTICALLY TREATED TEETH OBTURATED WITH RESILON AND GUTTA-PERCHA

Journal of Health and Allied Sciences NU ◽

10.1055/s-0040-1703806 ◽

2014 ◽

Vol 04 (03) ◽

pp. 075-079

Author(s):

Kiran Halkai ◽

Rahul Halkai ◽

Mithra N. Hegde ◽

Vijay Kumar ◽

Keyword(s):

Fracture Resistance ◽

Testing Machine ◽

Control Group ◽

Endodontically Treated Teeth ◽

Group 4 ◽

Anterior Teeth ◽

Ah Plus ◽

Group 3 ◽

Group 2

Abstract Aim: To compare and evaluate in-vitro the fracture resistance of endodontically treated teeth obturated with resilon & epiphany sealer and guttapercha using different sealers. Epoxy resin based sealer AH-plus and zinc oxide eugenol based sealer-TubliSeal (EWT). Methodology: sixty four human single rooted maxillary anterior teeth, cleaned stored in 0.9% saline. All the teeth were decoronated to root length 14mm and bucco-lingual diameter of 5-7mm, After access openings teeth were instrumented using K3.06 up to final apical size 30/.06 and randomly allocated into 4 experimental groups (n=16 per group). Group 1(Control group): teeth were instrumented but not obturated, Group 2: Resilon cones and epiphany SE-sealer. Group 3: guttapercha cones and epoxy based sealer AH plus. Group 4: guttapercha and Tubli seal EWT. Coronal seal was done using IRM cement. Each of the specimens were tested for fracture resistance by instron universal testing machine. Results: Higher fracture resistance values were observed for group 2 (Resilon & Epiphany SE sealer) followed by group 3(Guttapercha & AH Plus sealer) and group 4(Guttapercha & TubliSeal EWT) when compared to group1 (control-instrumented but not obturated). Conclusion: filling the root canals with contemporary polymer based root canal obturating system- Resilon increased the in vitro fracture resistance of endodontically treated teeth.

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Latent Learning in White Rats with and without Reinforcement by Presentation of Videotaped Stimuli

Perceptual and Motor Skills ◽

10.2466/pms.1978.46.3c.1331 ◽

1978 ◽

Vol 46 (3_suppl) ◽

pp. 1331-1337 ◽

Cited By ~ 1

Author(s):

Jonathan Kahane ◽

Robert J. Robinson

Keyword(s):

Albino Rats ◽

Correlated Response ◽

Latent Learning ◽

White Rats ◽

Theoretical Support ◽

Wistar Strain ◽

Group 3 ◽

Group 2 ◽

Better Than ◽

Group 1

The effect of videotaped presentation of a maze, with and without reinforcement during correct “trials,” was investigated to determine whether learning could occur without the correlated response being manifested. Three groups of 10, female albino rats of the Wistar strain, 120 days old, were employed. The stimuli were presented on a monitor during acquisition. Group 1 received the film and reinforcement during correct “trials” and performed significantly better than Group 2, which received the film but no reinforcement and Group 3 which received neither film nor reinforcement on test trials in the actual maze. Empirical and theoretical support were obtained for the notion that learning would occur without responding.

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EVALUATION OF PATIENT'S PERCEPTION AND HEALING, FOLLOWING CONVENTIONAL AND PARALLELING TECHNIQUE OF FRENECTOMY USING SCALPEL AND OTHER MODALITY

UNIVERSITY JOURNAL OF DENTAL SCIENCES ◽

10.21276/ujds.2020.6.1.7 ◽

2020 ◽

Vol 6 (1) ◽

pp. 21-27

Author(s):

Dr. Ira Gupta ◽

Saranik Sarkar ◽

Rohit Gupta ◽

Nidhi Gupta ◽

Janardhana Amaranath B. J. ◽

...

Keyword(s):

Wound Healing ◽

Gingival Recession ◽

Conventional Technique ◽

Treatment Modalities ◽

Group 3 ◽

Group 2 ◽

Patient’S Perception ◽

Better Than ◽

Group 1 ◽

Operative Wound

Background: Frenum that encroaches on the margin of the gingiva may interfere with plaque removal and can lead to gingival recession and midline diastema. Thus, to maintain proper oral hygiene and prevent gingival recession, frenectomy is done. Frenectomy can be accomplished by conventional frenectomy technique, which has certain disadvantages. To overcome those drawbacks, paralleling technique of frenectomy has been introduced. Both the techniques can be performed by using various treatment modalities. Aim: The purpose of this clinical study was to compare the bleeding during surgery, post-operative wound healing and patient's perception towards the conventional frenectomy technique with scalpel, paralleling frenectomy technique with scalpel and paralleling technique with electrocautery. Materials and method: A total of 30 subjects with gingival or papillary frenal attachment were selected and equally divided into three groups. Group 1 was treated by conventional technique with scalpel, Group 2 by paralleling technique with scalpel and Group 3 by paralleling technique with electrocautery. Various parameters such as bleeding during surgery, patient's perception towards the various techniques and post-operative wound healing were evaluated. Results: The results showed that bleeding during surgery was minimum in group 3 as compared to other two groups. Patient's perception towards paralleling technique with scalpel, was found better than the other groups. At 7th day, though there was a difference in the healing but at 21st day wound healing was almost similar in all the three groups. Conclusion: Based on our findings and clinical outcome, paralleling technique with scalpel provided better patient's perception and an efficient and satisfactory option for frenectomy.

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Evaluation of Apical Filling after Warm Vertical Compaction using Two Different Endodontic Materials: Resilon® and Gutta-Percha

World Journal of Dentistry ◽

10.5005/jp-journals-10015-1150 ◽

2012 ◽

Vol 3 (2) ◽

pp. 166-170

Author(s):

Carla Zogheib ◽

Etienne Medioni

Keyword(s):

Group 4 ◽

Gutta Percha ◽

Anterior Teeth ◽

Significant Difference ◽

Ah Plus ◽

Group 3 ◽

Group 5 ◽

Group 2 ◽

Warm Vertical Compaction ◽

Group 1

ABSTRACT Forty-eight extracted maxillary anterior teeth instrumented with ProTaper system to apical preparations 0.25, 0.40 and 0.60 mm (n = 16 each) were divided into six groups for filling as following: Group 1: Apical preparation 25/100 + gutta-percha/AH Plus sealer, group 2: Apical preparation 25/100 + Resilon/Real Seal, group 3: Apical preparation 40/100 + gutta-percha/AH plus sealer, group 4: Apical preparation 40/100 + Resilon/Real Seal, group 5: Apical preparation 60/100 + gutta-percha/AH plus, group 6: Apical preparation 60/100 + Resilon/Real Seal. All teeth were filled using the warm vertical technique. Horizontal sections at 1, 2 and 3 mm from the apex were observed by SEM under 200 × magnification. Sections were digitally photographed under a stereomicroscope and the images were transferred to a compatible PC for image analysis. The surface area of voids were calculated and compared at all levels; using the Kruskal-Wallis test with Sidak correction and Mann-Whitney U test (p > 0.05). Comparisons within each group (gutta-percha/AH plus and Resilon/Real Seal) showed the presence of voids but there was no significant difference between any level of sectioning for apical preparations of 25 and 40 (p > 0.05). The only difference was in the groups prepared to size 60 and filled with Resilon/ Real Seal which showed significantly more voids than the group filled with gutta-percha/AH plus and especially at the 3 mm level. Conclusion The system Resilon/Real Seal did not achieve better results in terms of sealing ability in the apical third when compared to the conventional gutta-percha/AH plus sealing system. How to cite this article Zogheib C, Naaman A, Medioni E. Evaluation of Apical Filling after Warm Vertical Compaction using Two Different Endodontic Materials: Resilon® and Gutta-Percha. World J Dent 2012;3(2):166-170.

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Fracture Resistance of a Bulk-Fill and a Conventional Composite and a Combination of Both for Coronal Restoration of Severely Damaged Primary Anterior Teeth

Frontiers in Dentistry ◽

10.18502/fid.v16i1.1112 ◽

2019 ◽

Author(s):

Shahram Mosharrafian ◽

Maryam Shafizadeh ◽

Zeinab Sharifi

Keyword(s):

Fracture Resistance ◽

Treatment Time ◽

Testing Machine ◽

Anterior Teeth ◽

Significant Difference ◽

Group 3 ◽

The Mean ◽

Group 2 ◽

One Way Anova

Objectives: This study aimed to compare the fracture resistance of a bulk-fill and a conventional composite and a combination of both for coronal restoration of severely damaged primary anterior teeth. Materials and Methods: In this in vitro experimental study, 45 primary anterior teeth were randomly divided into three groups. After root canal preparation, the canals were filled with Metapex paste such that after the application of 1 mm of light-cure liner, 3 mm of the coronal third of the canal remained empty for composite post fabrication. Filtek Z250 conventional composite was used in group 1, Sonic-Fill bulk-fill composite was used in group 2 and Sonic-Fill with one layer of Filtek Z250 as the veneering were used in group 3. Adper Single Bond 2 was used in all groups. The teeth were thermocycled, and fracture resistance was measured by a universal testing machine. The mode of fracture was categorized as repairable or irreparable. Data were analyzed using one-way ANOVA. Results: The mean fracture resistance was 307.00±74.72, 323.31±84.28 and 333.30±63.96 N in groups 1 to 3, respectively (P=0.55). The mean fracture strength was 14.53±2.98, 15.08±2.82 and 15.26±3.02 MPa in groups 1 to 3, respectively (P=0.77). The frequency of repairable mode of failure was 80% for the conventional, 73.6% for the bulk-fill and 80% for the bulk-fill plus conventional group, with no significant difference (P>0.05). Conclusions: Bulk-fill composites can be used for coronal reconstruction of severely damaged primary anterior teeth similar to conventional composites to decrease the treatment time in pediatric patients.

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Remineralization potential of GC Tooth Mousse and GC Tooth Mousse plus on initial caries like lesion of primary Teeth – An in-vitro comparative evaluation

UNIVERSITY JOURNAL OF DENTAL SCIENCES ◽

10.21276/ujds.2020.6.2.3 ◽

2020 ◽

Vol 6 (2) ◽

pp. 3-10

Author(s):

Anshul ◽

Kaushal Kishor Jha

Keyword(s):

Group Iii ◽

Initial Caries ◽

Anterior Teeth ◽

Group I ◽

Group 3 ◽

Group Ii ◽

Group 2 ◽

Tooth Mousse ◽

Group 1

Aim: Teeth are constantly going through cycles of demineralization and remineralization. The ultimate goal of clinical intervention is the preservation of tooth structure and the prevention of lesion progression to the point where restoration is required. Thus promoting remineralization is the ultimate goal of clinical prevention of caries lesion. The present in vitro study aimed to investigate the efficacy of GC Tooth Mousse (CPP-ACP) and GC Tooth Mousse Plus (CPP-ACP)F on artificial enamel caries in primary human teeth. Methods and Material: Sixty freshly extracted human primary anterior teeth were used in this study. The root portion of 60 primary anterior teeth was separated from the crown portion at the cemento-enamel junction (CEJ) Teeth samples were divided into 3 Groups (n=20 each). Group 1 as a control group, Group 2 GC Tooth Mousse, and Group 3 Tooth Mousse Plus containing dentifrices were used. Samples were subjected to 10 days of pH cycling protocol. The changes were analyzed using Vickers Hardness Testing Machine and SEM. Pre and post groups were compared by paired t-test. Independent groups were compared by one-way analysis of variance. Result: Micro-morphological observations of the enamel surfaces with SEM : Group 1 the enamel scanning showed shallow depressions and fine porosities within these depressions, Group 2 showed numerous granular particles and amorphous crystals which were arranged on the enamel surface. Smooth, homogeneous surface, and no irregularities were seen in Group 3. Surface Microhardness Evaluation After treatment, the mean hardness Group III was the highest followed by Group II and Group I (i.e. Group I < Group II < Group III). Conclusion: GC Tooth Mousse Plus showed a statistically significant amount of remineralization.

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Enamel Remineralization Competence of a Novel Fluoride-Incorporated Bioactive Glass Toothpaste—A Surface Micro-Hardness, Profilometric, and Micro-Computed Tomographic Analysis

Tomography ◽

10.3390/tomography7040063 ◽

2021 ◽

Vol 7 (4) ◽

pp. 752-766

Author(s):

Imran Farooq ◽

Saqib Ali ◽

Faraz Ahmed Farooqi ◽

Jehan AlHumaid ◽

Mashael Binhasan ◽

...

Keyword(s):

Bioactive Glass ◽

Artificial Saliva ◽

Micro Ct ◽

Micro Hardness ◽

Micro Computed Tomography ◽

Fluoride Toothpaste ◽

Computed Tomographic ◽

Group 3 ◽

Group 2 ◽

Four Blocks

This study aimed to analyze the enamel remineralization efficacy of a novel fluoridated bioactive glass (F-BG) toothpaste compared to a standard fluoride toothpaste. Seventy-two enamel blocks (N = 72) were divided into groups of twenty-four blocks according to the toothpaste exposure—group 1: brushed with distilled water, group 2: brushed with fluoride toothpaste (ColgateTM), and group 3: brushed with F-BG toothpaste (BioMinFTM). Pre-brushing, enamel blocks were demineralized using 6 wt.% citric acid (pH = 2.4). Tooth brushing was performed using a mixture of respective toothpaste and artificial saliva (AS), and each enamel block received 5000 linear strokes. The samples were assessed for surface micro-hardness (to estimate Vickers hardness number, VHN), surface roughness (Ra), and volume loss/gain using micro-computed tomography (micro-CT). The highest increase in the VHN was noticed for group 3 (117.81) followed by group 2 (61.13), and all the intragroup comparisons were statistically significant (p < 0.05). Demineralization increased the Ra values, and a decrease was observed post-remineralization for all the groups. The maximum Ra decrease was observed for group 3 (−223.2 nm) followed by group 2 (−55.6 nm), and all the intragroup comparisons were again statistically significant (p < 0.05). Micro-CT investigation revealed that the enamel volume decreased after demineralization and increased after remineralization among all groups. The F-BG toothpaste showed greater enamel surface micro-hardness (increased VHN), smoother surface (low roughness), and better volume restoration (remineralization) in comparison to the fluoride toothpaste.

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Association between agenesis and root morphology of anterior teeth

Revista de Odontologia da UNESP ◽

10.1590/1807-2577.09119 ◽

2019 ◽

Vol 48 ◽

Author(s):

Rodrigo BORALI ◽

Carolina Carmo de MENEZES ◽

Giovana Cherubini VENEZIAN ◽

Silvia Amélia Scudeler VEDOVELLO ◽

Viviane Veroni DEGAN

Keyword(s):

Root Morphology ◽

Third Molar ◽

Tooth Agenesis ◽

Chi Square ◽

Significance Level ◽

Exact Test ◽

Anterior Teeth ◽

Significant Difference ◽

Group 3 ◽

Group 2

Abstract Introduction Tooth agenesis is likely to affect the root teeth and should be considerated in orthodontic tratament. Objective The aim of this study was to assess the association between agenesis and root morphology of anterior teeth. Material and method The anterior teeth of 51 individuals were evaluated on 102 periapical radiographs and then divided into three groups: Group 1 (n=16) – no tooth agenesis; Group 2 (n=17) – only third molar agenesis; and Group 3 (n=18) – tooth agenesis of premolars or lateral incisors. Root morphology of anterior teeth was evaluated and the roots were classified as short, blunt, apically bent, and pipette-shaped. Fisher’s exact test was used to compare root shapes, the chi-square test was used to obtain the distribution of sexes between the groups, and ANOVA was performed to compare the ages between the groups. The significance level was set at 5% for all analyses. Result There was significant difference in root shapes (P<0.05) between the groups. Blunt roots were the most prevalent in all groups, but their rate was higher in Group 3 (83%). Conclusion There was association between agenesis and root morphology of anterior teeth.

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Comparison of Casein Phosphopeptide with Potassium Nitrate and Sodium Monofluorophosphate Desensitizing Efficacy after In-Office Vital Bleaching—A Randomized Trial

Applied Sciences ◽

10.3390/app11199291 ◽

2021 ◽

Vol 11 (19) ◽

pp. 9291

Author(s):

Hafiz Muhammad Adil ◽

Rizwan Jouhar ◽

Muhammad Adeel Ahmed ◽

Sakeenabi Basha ◽

Naseer Ahmed ◽

...

Keyword(s):

Calcium Phosphate ◽

Amorphous Calcium Phosphate ◽

Potassium Nitrate ◽

Anterior Teeth ◽

Significant Difference ◽

Desensitizing Agents ◽

Group 3 ◽

Group 2 ◽

Casein Phosphopeptide ◽

Group 1

Casein phosphopeptide-amorphous calcium phosphate (CPP-ACP), potassium nitrate, and sodium monofluorophosphate are desensitizing agents that help in reducing teeth sensitivity. However, indecisive evidence exists regarding their efficacy. Therefore, this study was conducted to compare the desensitizing efficacy of casein phosphopeptide-amorphous calcium phosphate and potassium nitrate with sodium monofluorophosphate agents after in-office vital bleaching. A randomized controlled trial was conducted on 2011 patients. The patients were randomly and equally divided into the CPP-ACP group (group 1), potassium nitrate with sodium monofluorophosphate group (group 2), and placebo gel (group 3). The upper and lower anterior teeth including the first premolar were isolated with a rubber dam, then the bleaching agents were applied on the labial surface of all the teeth, followed by light activation for 15 min. The procedure was repeated 3 times with an interval of 5 min in-between. After carrying out the bleaching procedure, patients were given a desensitizing gel or placebo gel in unmarked syringes with an instruction to apply it every 12 h for up to 3 days. The intensity of pain was recorded using a discomfort interval scale (DIS). A decrease in pain was observed 24 h after the application of the desensitizing gel in groups 1 and 2. However, in group 3, the pain persisted, with 46 (69.69%) patients having moderate pain and 14 (21.21%) developing severe pain over time. A significant difference in discomfort level with time was noted in group 1 (p = 0.015) and group 2 (p = 0.036). However, no significant difference was found in group 3 (p = 0.085). It was concluded that both desensitizing agents performed exceptionally well in reducing teeth sensitivity.

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