Publications by authors named "N Srikant"

36 Publications

Tooth shade variation in Indian population: An objective guide to age estimation.

Heliyon 2021 Feb 5;7(2):e06164. Epub 2021 Feb 5.

Department of Periodontics, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.

Introduction: The color of the teeth is affected by chronological age due to the variations of the hard and soft tissue structure of the teeth. There are very few studies have assessed the shade of the Enamel and correlated it with the age changes. Hence the study aimed to assess the enamel shade with the aging in the individual.

Materials And Methods: The central incisors of 388 individuals (5-78 years) were assessed for tooth color using a VITA 3D master shade guide and the Hue, Value and Chroma were noted. Mean grey values of the teeth were obtained by image manipulation using Image J software and normalized using the values obtained from the 18% contrast grey card. Chi square tests and linear regression analysis is used to find associations with age and tooth shade variations.Results: The teeth had higher score of Hue, Value and Chroma in older individuals. The tooth shade tended to shift towards redder hue with older age group. Simple linear regression analysis showed a significant correlation of age with normalized grey value in association with the shade parameters. (r = 0.717, SEE = 12.322 years)Conclusion: Tooth color changes with age and the mean age in grey values and shade guides can be a useful tool for age estimation.
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February 2021

Evaluation of indirect pulp capping using pozzolan-based cement (ENDOCEM-Zr®) and mineral trioxide aggregate - A randomized controlled trial.

J Conserv Dent 2020 Mar-Apr;23(2):152-157. Epub 2020 Nov 5.

Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences, Affiliated to Manipal Academy of Higher Education, Mangalore, Karnataka, India.

Background: Pulp capping should always be considered as the primary treatment of choice for teeth without irreversible pulpitis in lesions approaching dental pulp. The predictability of vital pulp therapy has improved with the introduction of newer bioceramic materials.

Aim: The purpose of this randomized controlled trial was to compare the outcomes of mineral trioxide aggregate (MTA) (Angelus, Londrina, Brazil) and a pozzolan-based cement (ENDOCEM-Zr [Maruchi, Wonju, Korea]) as an indirect pulp capping (IPC) material.

Materials And Methods: IPC was performed in forty patients who were randomly divided into ENDOCEM-Zr and MTA groups. The outcome was assessed using clinical and radiographic tests at different time intervals. The prognostic factors on the outcome of IPC were also evaluated.

Results And Conclusions: The success rate of ENDOCEM-Zr and MTA groups was 94.7% and 89.4%, respectively. The results were not statistically significant. Binary logical regression showed that the age of the patient and the status of the pulp before treatment were deciding variables for the outcome of the study. Therefore, it was concluded from the study that the evaluated pozzolan-based cement could be used as an alternative to MTA because of its faster setting time and lower discoloration potential. In addition, pulp capping should be performed with caution in individuals above 40 years and in teeth with reversible pulpitis.
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November 2020

Assessment of knowledge of use of electronic cigarette and its harmful effects among young adults.

Open Med (Wars) 2020 25;15(1):796-804. Epub 2020 Aug 25.

Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education, Karnataka, India.

Background: The practice of young adults smoking e-cigarette may have been adopted as a way of smoking cessation or just to follow a trend. Most people still remain unaware of the detrimental effects of e-cigarette. This study was carried out to assess the prevalence of the habit of smoking e-cigarette and the awareness of its harmful effects among adults aged 18-23 years.

Methods: A questionnaire adopted from a study conducted in Italy was used in the study following due permission. After taking their consent, participants were requested to fill the survey irrespective of their smoking status.

Results: In total the study comprised 710 participants aged 20.7 ± 1.7 years (females = 412 and males = 298) from six countries. Most respondents were from India followed by the USA and then the UK. The most common mode of information for the participants on the existence of e-cigarette was from the family members, friends followed by Internet search engines and TV/newspaper advertisements. Among the participants, e-cigarette had a prevalence of 5.63%. Among these, 26 participants were using e-cigarette for less than 1 year and 2 participants for more than 5 years. E-cigarette smokers also experienced sore throat, cough, headache, dizziness and sleeplessness.

Conclusion: Majority of the young population was unaware about the use and harmful effects of e-cigarette.
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August 2020

Evaluation of the effectiveness of fluoridated and non-fluoridated desensitizing agents in dentinal tubule occlusion using scanning electron microscopy. An in-vitro study.

Dent Res J (Isfahan) 2020 May-Jun;17(3):193-199. Epub 2020 May 23.

Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences, Mangalore, Affiliated to Manipal Academy of Higher Education, Manipal, Karnataka, India.

Background: Dentin hypersensitivity is primarily caused due to patent or exposed dentinal tubules. Nonfluoridated-desensitizing agents deposit hydroxycarbonate apatite (HCA), within the dentinal tubules, thereby relieving hypersensitivity. Fluoride-containing bioactive glass-based agents form fluorapatite which is less soluble when compared to hydroxyapatite and HCA.

Materials And Methods: In this study forty dentin specimens obtained from extracted human premolars were divided randomly into four groups ( = 10): Group 1 - fluoridated bioactive glass (FBaG); Group 2 - bioactive glass (BaG); Group 3 - arginine calcium carbonate; Group 4 - saline. 37.5% phosphoric acid was used to ensure patent dentinal tubules. Test agents from each group were applied using a rubber cup. Half the treated samples were then subjected to 6% citric acid treatment. The degree of occlusion was evaluated using the scanning electron microscope, and the microscopic images were scored before and after the citric acid challenge by two blinded endodontists. Statistical analysis was performed using SPSS, one-way ANOVA, and post hoc Tukey test ( = 0.05).

Results: Group 1 demonstrated better tubule occlusion in comparison with Group 2 and a statistically significant difference when compared to Group 3 ( = 0.001). Following acid challenge, Group 2 showed significantly more occluded tubules when compared with Group 3 ( = 0.001) and comparable difference with Group 1.

Conclusion: All desensitizing agents showed satisfactory dentinal tubule occlusion. While fluoridated bioactive glass demonstrated better occlusion immediately after application, Bioactive glass showed better resistance to acid treatment.
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May 2020

Comparative evaluation of three different toothpastes on remineralization potential of initial enamel lesions: A scanning electron microscopic study.

Indian J Dent Res 2020 Mar-Apr;31(2):217-223

Department of Pediatric and Preventive Dentistry, Kannur Dental College, Kannur, Kerala, India.

Background: The early enamel lesions are reversible as it is a process involving mineral transactions between the teeth and saliva.

Aim: To evaluate the efficiency of three different tooth pastes on remineralization potential of initial enamel lesions using Vickers Micro hardness Test and Scanning electron microscopy.

Materials And Methods: Artificial carious lesions were prepared in human enamel with demineralizing solution. The treatment agents included were Colgate sensitive plus toothpaste, Regenerate enamel science™ toothpaste, BioRepair toothpaste and control as Deionized water. All the samples were subjected to treatment solutions as per the pH cycling model for 12 days to simulate the daily oral environment's acid challenge. The remineralization parameters-surface hardness and surface roughness of enamel blocks were evaluated with Vickers indenter and Scanning electron microscope respectively. Statistical Analysis: ANOVA test was used to check mean differences between the groups. Post hoc analysis was done using Tukey's post hoc test. SEM images were graded according to Bonetti et al grading criteria.

Results: As per statistical analysis, maximum remineralization of enamel blocks occurred after applying Colgate Sensitive Plus tooth paste followed by BioRepair tooth paste and Regenerate enamel Science™ toothpaste. Least remineralization potential was shown by control group.

Conclusion: Colgate sensitive plus tooth paste with Pro Argin™ formula can be regarded as a potential remineralising agent. It can be concluded as a noninvasive means of managing early enamel carious lesions.
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May 2020