KAUSHIK DUTTA
@gnidsr.ac.in
PROFESSOR AND HEAD OF THE DEPARTMENT, DEPARTMENT OF ORAL MEDICINE AND RADIOLOGY, 157/F NILGUNJ ROAD, PANIHATI, KOLKATA. PIN- 700114
GURU NANAK INSTITUTE OF DENTAL SCIENCES AND RESEARCH
RESEARCH, TEACHING, or OTHER INTERESTS
Radiology, Nuclear Medicine and imaging, Medicine, Otorhinolaryngology, Dentistry
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Anoushka Gupta, Abir Dutta, Kaushik Dutta, and Kaushik Mukherjee
Springer Science and Business Media LLC
Abir Dutta, Kaushik Mukherjee, Venkata Sundeep Seesala, Kaushik Dutta, Ranjan Rashmi Paul, Santanu Dhara, and Sanjay Gupta
Elsevier BV
Abir Dutta, Kaushik Mukherjee, Venkata Sundeep Seesala, Kaushik Dutta, Ranjan Rashmi Paul, Santanu Dhara, and Sanjay Gupta
SAGE Publications
The extent to which load transfer in a diseased mandible with odontogenic tumour might influence the potential risk of pathological fracture has scarcely been investigated. The study sought to investigate the quantitative deviations in load transfer across healthy and cancer-affected (diseased) mandibles having odontogenic tumours. The effect of size of the tumours (small: 9 mm diameter, large: 19 mm diameter), and variation in bone mechanical (elastic) properties of the mandible on load transfer in cancer-affected mandibles during a mastication cycle have been investigated. Based on patient-specific computed tomography–scan datasets, detailed three-dimensional finite element models of healthy and diseased mandibles were developed. High stresses of 25–30 MPa and strains ∼700 µε were observed in the healthy mandible during the right molar bite. However, marginal deviations were observed in principal stress distributions in the diseased mandibles with small- and large-sized tumours, as compared to the healthy mandible. Maximum principal strains of ∼1474 µε were found in the body region adjacent to the symphysis region for small-sized tumour. Whereas for large-sized tumour, maximum strains of ∼2700 µε were observed in the right buccal regions. Reduction in Young’s modulus due to different stages of odontogenic tumours had a localised effect on the principal stress distributions, but triggered an abrupt increase in the principal tensile strains. It appears that there is a potential risk of pathological fracture for large-sized odontogenic tumour, owing to high tensile stresses and strains.
Piyali Datta, Shabnam Zahir, GautamKumar Kundu, and Kaushik Dutta
Medknow
Sweta Singh, Samiran Das, Jayanta Bhattacharyya, Soumitra Ghosh, Preeti Goel, and Kaushik Dutta
Medknow
Context: Many authors have conducted studies that determine horizontal condylar guidance (HCG) using various methods, articulator systems, and recording materials. However, there is a dearth of literature on variability existing in HCG in individuals with different skeletal relationships. This study is an attempt to verify whether such a difference exists or not. Aims: The aim of this study is to determine and correlate the HCG in individuals with Angle's Class I, Class II, and Class III malocclusion using radiographic and clinical methods. Settings and Design: HCG was recorded for thirty individuals, ten of each class. For each individual, HCG was recorded clinically as well as radiographically. Subjects and Methods: Clinically, HCG was recorded using protrusive check bites and a semi-adjustable articulator. Radiographically, two methods were employed. First, a “tangent method” wherein the angle made by a tangent to the posterior slope of articular eminence with the Frankfurt horizontal (FH) plane was considered as the HCG, and second, a “protrusive method” where the position of the condyle at maximum intercuspation and 6 mm protrusion were traced, and the angle this path made with the FH plane was recorded as the HCG. Statistical Analysis: Descriptive statistical analysis along with Tukey's test and analysis of variance was used to calculate and compare the mean values. Pearson correlation coefficient was used to establish correlation between various means. Results: A significant difference in the HCG of three skeletal relationships was seen, with Class II having a steeper angle than the other two. Among the various methods used, a correlation was found between the clinical and the protrusive method; however, the tangent method yielded greater values of HCG. Conclusions: The average value of HCG should not be used as it differs according to the skeletal relationship. Radiographic method can be used to yield consistent HCG; however, the protrusive method should be employed.
PritiD Desai, Kaushik Dutta, UtapalKumar Das, and Soumayabrata Sarkar
Medknow
Aim: Compare the measurement of working length with three different methods manual tactile sensation, digital radiography and Mutidetector computed tomography(MDCT). Materials and Method: 40 human premolar extracted for orthodontic purpose were selected. Teeth were store in sodium chloride (0.9%) during the study. Access cavity was prepared and canal patency was seen with no 10 file in each tooth. Manually no 15 K file was inserted from access cavity until the tip was visible at the foramen, a silicon stopper was adjusted to the corresponding buccal cusp tip and the root canal length was measured. After that in each tooth with no-15 K file inserted from access cavity with stop at tip of buccal cusp until tip appear at foramen and x-ray was taken with digital radiograph (RVG,Satelac) and canal length was measured. After that all teeth are mounted in wax block,MDCT scan was done and in the scan images of teeth, root canal length is measured from buccal cusp tip to root end. After taking measurement of working length with all three methods and the data was stastically analyzed with One Way Analysis of variance (ANOVA) followed by Turkey's Test. Results: ANOVA and turkeys test showed that there was no significant difference in the measurements by the three procedures (p>0.05). Conclusion: Working length measurement with MDCT scan and other two conventional methods does not show significant difference in measurement. Use of newer 3D imaging technique is useful in root canal treatment for measuring working length.
Niranjan Kumar Chugh, Jayanta Bhattacharyya, Samiran Das, Soumitra Ghosh, Kaushik Dutta, and Preeti Goel
Elsevier BV
PritiD Desai, Kaushik Dutta, and Soumyabrata Sarakar
Medknow
AIM
The aims of this in vitro study were to see potential applications of multidetector computed tomography (MDCT) in the analysis of root canal morphology.
MATERIALS AND METHODS
In this in vitro study measurement of root and canal diameters, root and canal diameter ratios, and radicular wall thickness at different levels in maxillary canines with long oval root canals. A total of 40 human maxillary canines, with single long oval canals were selected for this study. The specimens were analyzed with MDCT (16 slice) through dentascan software. The cross-sections corresponding to 625 mm slice thickness from the radiologic apex were analyzed to measure the mesiodistal (MD) and buccolingual (BL) diameters of the canals and the thickness of the root and the walls. The BL/MD ratios of the canal (∆C) and the root (∆R) diameters were calculated, as was as the mean taper in both a BL and an MD dimension.
RESULTS
A high correlation was established between the shape of the root canal and the corresponding root.
CONCLUSION
Clinical Implications of these techniques is useful to clinician and it can also be applied to improve preclinical training and analysis of fundamental procedures in endodontic and restorative treatment.